HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis (STL) to Pennsylvania from $42

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/28. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
STL — PHL
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

How far in advance should I book a flight from St. Louis to Pennsylvania?

Users have found that booking a flight from St. Louis to Pennsylvania at least 59 days early can save you up to 49% on average compared to booking a flight this week. If booking 59 days before your flight isn’t an option for you, users have found flights from St. Louis to Pennsylvania for as little as $264 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $482 for flights departing within the next 3 days.

What is the cheapest month to fly from St. Louis to Pennsylvania?

The best pricing can be found in the month of December. Prices to Pennsylvania from St. Louis average $358. You can even find prices in December for less than $358, as users have found deals to Pennsylvania from as low as $167. The month of November appears to be one of the more expensive times to travel to Pennsylvania from St. Louis. Flying in the targeted month can save you up to 10%.

When is the cheapest time to fly from St. Louis to Pennsylvania (STL - PA)?

When flying from St. Louis to Pennsylvania, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Cheap American Airlines flights from St. Louis to Pennsylvania

Explore cheap flight options specifically provided by American Airlines for the route between St. Louis and Pennsylvania. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Find some of the cheapest American Airlines flights traveling from St. Louis to Pennsylvania. Come back soon if you're not finding the exact deal you're looking for.
Wed 7/176:08 amSTL - PHL
Nonstop2h 15mAmerican Airlines
Wed 7/177:08 pmPHL - STL
Nonstop2h 41mAmerican Airlines
Deal found 5/15$131
Sat 6/86:08 amSTL - PHL
Nonstop2h 17mAmerican Airlines
Tue 6/1110:40 amPHL - STL
Nonstop2h 36mAmerican Airlines
Deal found 5/15$134
Fri 7/194:52 pmSTL - PHL
Nonstop2h 14mAmerican Airlines
Tue 7/237:08 pmPHL - STL
Nonstop2h 41mAmerican Airlines
Deal found 5/15$156
Thu 6/136:08 amSTL - PHL
Nonstop2h 17mAmerican Airlines
Thu 6/202:39 pmPHL - STL
Nonstop2h 27mAmerican Airlines
Deal found 5/14$176
Tue 6/256:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Tue 7/27:42 amDCA - STL
Nonstop2h 23mAmerican Airlines
Deal found 5/15$179
Wed 6/196:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Thu 6/207:42 amDCA - STL
Nonstop2h 23mAmerican Airlines
Deal found 5/15$199
Wed 10/308:55 amSTL - DCA
Nonstop2h 04mAmerican Airlines
Sat 11/27:45 pmDCA - STL
Nonstop2h 34mAmerican Airlines
Deal found 5/15$204
Fri 6/76:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Mon 6/108:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Deal found 5/15$209
Wed 6/196:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Fri 6/288:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Deal found 5/15$223

Cheap Delta flights from St. Louis to Pennsylvania

Explore cheap flight options specifically provided by Delta for the route between St. Louis and Pennsylvania. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Have a look at some of the cheapest available Delta flights departing from St. Louis and landing in Pennsylvania. Make sure to examine the flight information before completing your reservation.
Mon 7/14:02 pmSTL - DCA
1 stop4h 38mDelta
Fri 7/52:45 pmDCA - STL
1 stop6h 44mDelta
Deal found 5/16$188
Wed 7/173:49 pmSTL - PHL
1 stop6h 27mDelta
Tue 7/238:05 amPHL - STL
1 stop7h 39mDelta
Deal found 5/16$196
Tue 5/286:30 pmSTL - PHL
1 stop5h 23mDelta
Fri 5/315:20 amPHL - STL
1 stop4h 34mDelta
Deal found 5/14$197
Wed 7/173:49 pmSTL - PHL
1 stop6h 27mDelta
Sun 7/216:00 amPHL - STL
1 stop4h 14mDelta
Deal found 5/15$198
Sat 5/255:07 pmSTL - PHL
1 stop6h 46mDelta
Sat 6/19:00 amPHL - STL
1 stop7h 57mDelta
Deal found 5/16$243
Wed 5/226:00 amSTL - LGA
Nonstop2h 33mDelta
Tue 6/412:29 pmLGA - STL
Nonstop2h 50mDelta
Deal found 5/15$270
Wed 5/226:00 amSTL - LGA
1 stop4h 46mDelta
Tue 6/410:20 amLGA - STL
Nonstop2h 56mDelta
Deal found 5/15$279
Wed 5/226:30 amSTL - JFK
1 stop4h 30mDelta
Tue 6/46:00 amJFK - STL
1 stop6h 48mDelta
Deal found 5/15$289
Tue 5/2110:45 amSTL - LGA
Nonstop2h 32mDelta
Thu 5/303:30 pmLGA - STL
Nonstop2h 46mDelta
Deal found 5/14$302

Cheap St. Louis to Pennsylvania flights in May & June 2024

Find cheap flight options from St. Louis to Pennsylvania specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Prices were last updated on May 16, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Pennsylvania in 2024. Check back in a little while for more flight options.
Wed 6/1210:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/148:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/15$58
Mon 6/1010:36 pmSTL - PHL
Nonstop2h 12mFrontier
Wed 6/128:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$68
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$76
Sat 6/83:08 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$77
Fri 5/241:10 pmSTL - PHL
Nonstop2h 14mFrontier
Fri 5/3110:53 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$78
Sat 5/258:57 amSTL - PHL
Nonstop2h 14mFrontier
Mon 5/273:30 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$85
Fri 5/311:10 pmSTL - PHL
Nonstop2h 14mFrontier
Sat 6/16:30 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$86
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mFrontier
Sat 5/256:30 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$87
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mFrontier
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/15$88

St. Louis to Pennsylvania 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Pennsylvania in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Listed are some of the best fares we've found on flights departing from St. Louis to Pennsylvania in 2024. Check back in a little while for more flight options.
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Wed 7/317:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$58
Fri 7/199:32 pmSTL - PHL
Nonstop2h 12mFrontier
Wed 7/247:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$68
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 7/227:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$70
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$76
Sat 6/83:08 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$77
Fri 5/241:10 pmSTL - PHL
Nonstop2h 14mFrontier
Fri 5/3110:53 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$78
Mon 7/159:32 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/197:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$80
Sat 5/258:57 amSTL - PHL
Nonstop2h 14mFrontier
Mon 5/273:30 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$85
Fri 5/311:10 pmSTL - PHL
Nonstop2h 14mFrontier
Sat 6/16:30 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$86

Non-stop flights to Pennsylvania from St. Louis

Discover non-stop flight options from St. Louis to Pennsylvania. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
For a quicker trip, book one of these direct flights from St. Louis to Pennsylvania. Search for alternative flights from St. Louis to Pennsylvania by utilizing the search form above.
Fri 7/199:32 pmSTL - PHL
Nonstop2h 12mFrontier
Wed 7/247:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$68
Wed 7/179:32 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 7/227:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$70
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Sat 6/812:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$76
Sat 6/83:08 pmSTL - PHL
Nonstop2h 12mFrontier
Mon 6/108:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$77
Fri 6/1410:36 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 6/218:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/15$78
Mon 7/159:32 pmSTL - PHL
Nonstop2h 12mFrontier
Fri 7/197:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/15$80
Fri 5/311:10 pmSTL - PHL
Nonstop2h 14mFrontier
Sat 6/16:30 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$86
Sat 6/153:08 pmSTL - PHL
Nonstop2h 12mFrontier
Sat 6/2212:51 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/14$87
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Mon 6/35:01 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$110

St. Louis to Pennsylvania flights leaving soon

Find last-minute flight options from St. Louis to Pennsylvania for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Check out these flights departing soon from St. Louis to Pennsylvania. To prevent any unwanted surprises, users should verify their flight info before booking.
Fri 5/241:10 pmSTL - PHL
Nonstop2h 14mFrontier
Fri 5/3110:53 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$78
Sat 5/258:57 amSTL - PHL
Nonstop2h 14mFrontier
Mon 5/273:30 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$85
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mFrontier
Sat 5/256:30 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$87
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mFrontier
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/15$88
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mFrontier
Wed 5/2910:54 pmPHL - STL
1 stop9h 14mFrontier
Deal found 5/15$118
Wed 5/228:47 amSTL - PHL
Nonstop2h 14mMultiple Airlines
Sat 5/2512:05 pmPHL - STL
1 stop9h 25mMultiple Airlines
Deal found 5/15$126
Fri 5/241:10 pmSTL - PHL
Nonstop2h 14mMultiple Airlines
Tue 5/286:31 amPHL - STL
1 stop8h 06mMultiple Airlines
Deal found 5/15$128
Fri 5/246:05 pmSTL - PHL
1 stop16h 01mMultiple Airlines
Fri 5/3110:53 amPHL - STL
Nonstop2h 27mMultiple Airlines
Deal found 5/16$162
Tue 5/212:12 pmSTL - PHL
1 stop15h 27mFrontier
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Deal found 5/15$168

One-way flights to Pennsylvania from St. Louis

Search for one-way flight options from St. Louis to Pennsylvania. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
Take a look at some of the one-way flights we've detected from St. Louis to Pennsylvania. Those needing a return flight from St. Louis to Pennsylvania can use the search form above.
Fri 6/2810:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/16$42
Fri 6/2810:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$43
Wed 6/1910:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$44
Thu 5/307:30 pmSTL - LGA
1 stop11h 08mSpirit Airlines
Deal found 5/15$49
Thu 5/307:30 pmSTL - LGA
1 stop11h 08mSpirit Airlines
Deal found 5/15$54
Mon 5/275:57 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/15$56
Wed 6/510:36 pmSTL - PIT
1 stop7h 28mFrontier
Deal found 5/15$56
Mon 5/275:57 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/14$57
Tue 6/1111:57 amSTL - LGA
2 stops20h 03mSpirit Airlines
Deal found 5/15$57

Find flights from St. Louis to Pennsylvania within your budget

Customize your flight search to find flights from St. Louis to Pennsylvania that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$58 - $188

Route

Depart

Return

Price

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 7/17

Nonstop2h 12m

Philadelphia

Wed 7/31

Nonstop2h 24m

$58

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Fri 7/19

Nonstop2h 12m

Philadelphia

Wed 7/24

Nonstop2h 24m

$68

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 7/17

Nonstop2h 12m

Philadelphia

Mon 7/22

Nonstop2h 24m

$70

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Sat 6/1

Nonstop2h 14m

Philadelphia

Sat 6/8

Nonstop2h 27m

$76

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Sat 6/8

Nonstop2h 12m

Philadelphia

Mon 6/10

Nonstop2h 27m

$77

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 5/29

Nonstop2h 14m

Philadelphia

Tue 6/11

1 stop10h 18m

$104

Lambert-St LouisNew York LaGuardia

STL - LGA

STLLGA

Lambert-St Louis

Tue 6/11

1 stop10h 15m

New York LaGuardia

Tue 6/18

1 stop8h 53m

$104

Lambert-St LouisPhiladelphia

STL - PHL

STLPHL

Lambert-St Louis

Wed 7/17

Nonstop2h 15m

Philadelphia

Wed 7/17

Nonstop2h 41m

$131

Lambert-St LouisWashington, D.C. Reagan-National

STL - DCA

STLDCA

Lambert-St Louis

Mon 7/1

1 stop4h 38m

Washington, D.C. Reagan-National

Fri 7/5

1 stop6h 44m

$188

Flights are sorted by cheapest first

Deals found on 5/15

No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Pennsylvania

Get insights into the airlines that provide service to Pennsylvania. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pennsylvania. Reviews last updated May 16, 2024.
Read through reviews of airlines operating flights from St. Louis to Pennsylvania, such as American Airlines, Delta and Spirit Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,040 reviews
Check prices

Crew

8.7

Overall

8.2

Comfort

8.1

Food

7.3

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Southwest
8.2
Very good
6,040 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Crew

8.7

Overall

8.2

Comfort

8.1

Food

7.3

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Alaska Airlines
8.1
Very good
9,157 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Crew

8.7

Overall

8.2

Comfort

8.1

Food

7.3

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Delta
8.0
Very good
10,673 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Crew

8.7

Overall

8.2

Comfort

8.1

Food

7.3

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

United Airlines
7.4
Good
10,924 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Crew

8.7

Overall

8.2

Comfort

8.1

Food

7.3

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

American Airlines
7.3
Good
14,514 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Crew

8.7

Overall

8.2

Comfort

8.1

Food

7.3

Entertainment

7.8

Boarding

8.3

Reviews

1 / 10

Wish the there were an electrical outlet to plug the phone. it died within 10 minutes of being in the air.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Pennsylvania. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from St. Louis to Pennsylvania?

    If you book a flight to Pennsylvania from St. Louis, you will be flying from Lambert-St Louis, which is the city’s only airport. Lambert-St Louis (STL) is located 12.7 mi from the center of St. Louis.

  • Can I find flights from St. Louis to Pennsylvania for under $100 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Pennsylvania for under $100. The cheapest flight booked recently is on Frontier for just $58, but on average you can expect to pay $97.

  • Are there nonstop flights from St. Louis to Pennsylvania for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from St. Louis to Pennsylvania under $100. A good price for a nonstop flight from St. Louis to Pennsylvania is less than $115.

  • Are there last-minute flights available from St. Louis to Pennsylvania for under $100?

    There are currently 20+ open flights from St. Louis to Pennsylvania within the next 7 days for less than $100.

  • What days are nonstop flights available from St. Louis to Pennsylvania?

    Nonstop flights can be found on the following days: Friday.

  • How popular is this St. Louis to Pennsylvania flight route?

    Within the past month, 6 users have taken a look at flights from Lambert-St Louis to Pennsylvania.

  • How many flights depart from St. Louis to Pennsylvania on average per day?

    Travelers can expect 2 flights from St. Louis to Pennsylvania on average per day.
    Early Morning (Midnight to 6am) - 100% of flight departures

  • How long is the flight from St. Louis to Pennsylvania?

    Frontier, Spirit Airlines, and American Airlines can get you from St. Louis to Pennsylvania in just under 2h 12m. Your travel time can differ by up to 8h 03m. St. Louis and Pennsylvania are separated by a distance of 816 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines to fly from St. Louis to Pennsylvania one-way?

    $42 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and American Airlines, with prices starting from $49 and $66, respectively.

  • What are the most popular routes from St. Louis to Pennsylvania?

    The most popular flight routes from St. Louis to Pennsylvania are Lambert-St Louis - New York LaGuardia, Lambert-St Louis - New York John F Kennedy Intl and Lambert-St Louis - Newark.

  • What are the most popular airlines that fly from St. Louis to Pennsylvania?

    The most popular airlines flying from St. Louis to Pennsylvania are American Airlines, Delta and Frontier. Something to consider prior to booking your flight.

  • What are the most reliable airlines from St. Louis to Pennsylvania?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from St. Louis to Pennsylvania on time: Qatar Airways (85%), American Airlines (85%), Aer Lingus (84%).

  • What are the cheapest flights from St. Louis to Pennsylvania?

    While on average a flight from St. Louis to Pennsylvania is generally $1,639, our data shows the cheapest flight currently is $88. When looking at the most popular route, (Lambert-St Louis - New York LaGuardia), you can expect to pay $104 for that flight.

  • What does STL to PHL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Lambert-St Louis Airport to Philadelphia Airport flight would often be abbreviated as a STL to PHL flight. Pittsburgh Airport (PIT), Harrisburg Airport (MDT), Allentown-Bethlehem Airport (ABE), Wilkes-Barre Scranton Airport (AVP), State College University Park Airport (SCE) are other airports near this flight route and their unique identifiers/IATA codes.

  • Can I find deals for flights from St. Louis to Pennsylvania that include extra baggage allowance?

    The amount of baggage you can bring on your St. Louis to Pennsylvania flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from St. Louis to Pennsylvania with specific airlines?

    Yes, Cheapflights allows you to browse and filter St. Louis to Pennsylvania flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

  • Can I find deals for flights from St. Louis to Pennsylvania that include hotel bookings?

    Yes. In addition to deals on St. Louis to Pennsylvania flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Pennsylvania?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pennsylvania.

  • Can I find deals for business class flights from St. Louis to Pennsylvania?

    Yes. Cheapflights offers flight deals from St. Louis to Pennsylvania by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from St. Louis to Pennsylvania that allow pets onboard?

    Many airlines flying from St. Louis to Pennsylvania offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from St. Louis to Pennsylvania?

    Yes, you can often find last-minute deals on St. Louis to Pennsylvania flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the St. Louis to Pennsylvania flight deals updated?

    The St. Louis to Pennsylvania flight deals you see on this page were last updated on 5/16.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for St. Louis to Pennsylvania
See prices for flight routes from nearby airports that may be better suited for you.

Kansas City to Seattle flights
St. Louis to Seattle flights
Kansas City to O'Hare Intl flights
Kansas City to Los Angeles flights
Kansas City to Las Vegas flights
St. Louis to Las Vegas flights
St. Louis to LaGuardia flights
Kansas City to LaGuardia flights
Kansas City to Miami flights
St. Louis to Miami flights
Kansas City to Boston flights
St. Louis to Hobby flights
Kansas City to John F Kennedy Intl flights
St. Louis to Denver flights
Kansas City to Newark flights
Kansas City to Denver flights
St. Louis to Dallas/Fort Worth flights
Kansas City to Atlanta flights
Kansas City to Orlando flights
St. Louis to Los Angeles flights
St. Louis to John F Kennedy Intl flights
St. Louis to Fort Lauderdale flights
Kansas City to Fort Lauderdale flights
Kansas City to Dallas/Fort Worth flights
St. Louis to George Bush Intcntl flights
St. Louis to Newark flights
St. Louis to Orlando flights
Kansas City to Hobby flights
Kansas City to Salt Lake City flights
St. Louis to Sky Harbor Intl flights
St. Louis to Boston flights
St. Louis to O'Hare Intl flights
Kansas City to Honolulu flights
St. Louis to Atlanta flights
Kansas City to Reagan-National flights
St. Louis to Salt Lake City flights
Kansas City to George Bush Intcntl flights
St. Louis to Reagan-National flights
Kansas City to Portland flights
Kansas City to Sky Harbor Intl flights
Kansas City to Dulles Intl flights
Kansas City to Midway flights
Kansas City to San Francisco flights
Kansas City to Philadelphia flights
St. Louis to Philadelphia flights
Kansas City to Detroit flights
St. Louis to Dulles Intl flights
St. Louis to San Francisco flights
Kansas City to San Diego flights
Kansas City to Tampa flights

Top 5 airlines flying from St. Louis to Pennsylvania

Discover the top 5 airlines that operate flights from St. Louis to Pennsylvania. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,637,452 searches. Data last updated May 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$71Average$177FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$112Average$193FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$219Average$419FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
DeltaCheapest$221Average$406FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
United AirlinesCheapest$274Average$515FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
USA to Bangkok flights
Dallas to El Paso flights
New York to Seattle flights
New York John F Kennedy Intl Airport to London flights
San Francisco to Dallas flights
Baltimore to Orlando flights
Tampa to Fort Lauderdale flights
Atlanta to San Diego flights
San Diego to Las Vegas flights
Los Angeles to Philadelphia flights
Salt Lake City to New York flights
St. Louis to Rhode Island flights

Search flights from St. Louis to Pennsylvania by cabin class

Find flights from St. Louis to Pennsylvania, based on your preferred cabin class, be it economy, premium economy, business, or first class.
First Class
Business Class
Prem Econ Class
Economy Class

Hourly flight availability from St. Louis to Pennsylvania

Find hourly flight availability from St. Louis to Pennsylvania. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 16, 2024.
24%of flight departuresEarly morningMidnight to 6 am
59%of flight departuresMorning6 am to noon
8%of flight departuresAfternoonNoon to 6 pm
9%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

Book a flight to one of these trending destinations

User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Flights to Montes Claros
Flights to Girona Costa Brava
Flights to Naxos
Flights to Bourgas
Flights to Hyannis Barnstable
Flights to Samos
Flights to Reggio Calabria Tito Menniti
Flights to Devils Lake
Flights to Ningbo Lishe Intl
Flights to Pellston Emmet County
Flights to Provincetown
Flights to Cortez Montezuma County
Flights to Ohrid
Flights to Oran Es Senia
Flights to Menorca/Mahon
Flights to Hakodate
Flights to Ordu/Giresun
Flights to Laayoune Hassan I
Flights to Cornwall Newquay
Flights to Melilla
Flights to Rennes St Jacques
Flights to Parikia Paros
Flights to Constanţa Mihail Kogalniceanu
Flights to Miyakojima Hirara

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from St. Louis to Pennsylvania?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from St. Louis to Pennsylvania. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from St. Louis to Pennsylvania?

Cheapflights helps you find that perfect flight to Pennsylvania from St. Louis by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from St. Louis to Pennsylvania with no change fees?

Need flexible booking options for your flight to Pennsylvania from St. Louis? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from St. Louis to Pennsylvania become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Pennsylvania from St. Louis today and book when prices fit your budget.

100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines