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Cheap flights from Pennsylvania to St. Louis (STL) from $37

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 8/3. 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.
PHL — STL
May 21 — May 281
From?
To?
Tue 5/21
Tue 5/28
1 adult, Economy
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How far in advance should I book a flight from Pennsylvania to St. Louis?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 232% on flights from Pennsylvania to St. Louis compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $476. For sooner than that we have options available in the next 3 days from $549.

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

January is one of the best times of the year to fly to St. Louis from Pennsylvania. Prices for January average $353 per person but you can even find prices for as low as $173. The most expensive prices can be found in the month of November. Opting for a January flight can save you 20% on your journey compared to booking in November

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Pennsylvania to St. Louis as you normally would.

Cheap Frontier flights from Pennsylvania to St. Louis

Explore cheap flight options specifically provided by Frontier for the route between Pennsylvania and St. Louis. 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.
Take a look at some of the lowest-priced Frontier flights heading from Pennsylvania to St. Louis. Be sure to come back soon if the deals available don't appeal to you at this time.
Sat 6/16:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 7/133:09 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/16$55
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Sat 6/18:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/16$58
Fri 6/218:19 pmPHL - STL
Nonstop2h 27mFrontier
Sat 6/223:08 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$68
Sat 6/2912:51 pmPHL - STL
Nonstop2h 27mFrontier
Mon 7/110:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$69
Wed 7/107:18 pmPHL - STL
Nonstop2h 24mFrontier
Mon 7/159:32 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/16$70
Sat 6/2212:51 pmPHL - STL
Nonstop2h 27mFrontier
Fri 6/2810:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$77
Fri 5/3110:53 amPHL - STL
Nonstop2h 27mFrontier
Fri 6/710:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$78
Fri 6/218:19 pmPHL - STL
Nonstop2h 27mFrontier
Mon 6/2410:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/16$80
Fri 7/127:18 pmPHL - STL
Nonstop2h 24mFrontier
Mon 7/159:32 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/15$81

Cheap Spirit Airlines flights from Pennsylvania to St. Louis

Explore cheap flight options specifically provided by Spirit Airlines for the route between Pennsylvania and St. Louis. 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.
Browse through some of the cheapest Spirit Airlines flights traveling from Pennsylvania to St. Louis. Deals frequently update to provide users with more options.
Sat 6/89:04 amEWR - STL
1 stop9h 24mSpirit Airlines
Tue 6/1111:57 amSTL - EWR
1 stop13h 01mSpirit Airlines
Deal found 5/16$101
Thu 6/66:30 amLGA - STL
1 stop11h 58mSpirit Airlines
Tue 6/1111:57 amSTL - LGA
1 stop10h 15mSpirit Airlines
Deal found 5/15$106
Sat 6/86:30 amLGA - STL
1 stop11h 58mSpirit Airlines
Tue 6/1111:57 amSTL - LGA
1 stop10h 15mSpirit Airlines
Deal found 5/15$116
Sat 6/1511:22 amEWR - STL
1 stop7h 06mSpirit Airlines
Tue 6/183:23 pmSTL - EWR
1 stop8h 11mSpirit Airlines
Deal found 5/15$126
Thu 6/66:30 amLGA - STL
1 stop11h 58mSpirit Airlines
Tue 6/1111:57 amSTL - LGA
2 stops20h 03mSpirit Airlines
Deal found 5/15$133
Sat 6/811:22 amEWR - STL
1 stop7h 06mSpirit Airlines
Tue 6/113:23 pmSTL - EWR
2 stops17h 52mSpirit Airlines
Deal found 5/16$135
Wed 6/121:27 pmEWR - STL
1 stop29h 01mSpirit Airlines
Tue 6/183:23 pmSTL - EWR
1 stop8h 11mSpirit Airlines
Deal found 5/14$143
Sat 6/86:30 amLGA - STL
1 stop11h 58mSpirit Airlines
Tue 6/1111:57 amSTL - LGA
2 stops20h 03mSpirit Airlines
Deal found 5/15$146
Sun 5/2611:59 amLGA - STL
1 stop6h 30mSpirit Airlines
Wed 5/2911:36 amSTL - LGA
2 stops20h 24mSpirit Airlines
Deal found 5/14$236

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

Find cheap flight options from Pennsylvania to St. Louis 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.
Check out some of the best flight deals from Pennsylvania to St. Louis in 2024. Check back regularly for other flight deals.
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/58:02 pmSTL - PHL
1 stop8h 31mFrontier
Deal found 5/15$118
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/58:13 amSTL - PHL
2 stops25h 24mFrontier
Deal found 5/15$123
Wed 6/58:19 pmPHL - STL
Nonstop2h 27mFrontier
Thu 6/63:32 pmSTL - PHL
1 stop13h 04mFrontier
Deal found 5/15$127
Tue 5/286:31 amPHL - STL
1 stop8h 06mMultiple Airlines
Fri 6/710:36 pmSTL - PHL
Nonstop2h 12mMultiple Airlines
Deal found 5/15$128
Sat 6/227:14 pmPHL - STL
Nonstop2h 42mAmerican Airlines
Tue 6/259:06 amSTL - PHL
Nonstop2h 18mAmerican Airlines
Deal found 5/15$131
Sat 6/2212:51 pmPHL - STL
Nonstop2h 27mFrontier
Tue 6/253:47 pmSTL - PHL
1 stop12h 49mFrontier
Deal found 5/16$136
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Tue 5/287:44 pmSTL - PHL
1 stop12h 58mFrontier
Deal found 5/15$138
Sun 5/198:58 pmPIT - STL
1 stop13h 38mFrontier
Wed 5/228:47 amSTL - PIT
1 stop8h 39mFrontier
Deal found 5/15$141
Tue 6/46:31 amPHL - STL
1 stop8h 06mMultiple Airlines
Wed 6/58:02 pmSTL - PHL
1 stop8h 31mMultiple Airlines
Deal found 5/16$141

Pennsylvania to St. Louis 2024 flight deals

Discover exclusive flight deals for travel between Pennsylvania and St. Louis 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.
Check out some of the best flight deals from Pennsylvania to St. Louis in 2024. Check back regularly for other flight deals.
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/58:02 pmSTL - PHL
1 stop8h 31mFrontier
Deal found 5/15$118
Wed 5/296:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 6/58:13 amSTL - PHL
2 stops25h 24mFrontier
Deal found 5/15$123
Fri 8/168:46 amPHL - STL
Nonstop2h 30mFrontier
Mon 8/2611:21 amSTL - PHL
Nonstop2h 13mFrontier
Deal found 5/15$124
Wed 6/58:19 pmPHL - STL
Nonstop2h 27mFrontier
Thu 6/63:32 pmSTL - PHL
1 stop13h 04mFrontier
Deal found 5/15$127
Tue 5/286:31 amPHL - STL
1 stop8h 06mMultiple Airlines
Fri 6/710:36 pmSTL - PHL
Nonstop2h 12mMultiple Airlines
Deal found 5/15$128
Wed 8/218:29 pmPHL - STL
1 stop22h 01mMultiple Airlines
Wed 8/283:32 pmSTL - PHL
Nonstop2h 13mMultiple Airlines
Deal found 5/15$130
Sat 6/227:14 pmPHL - STL
Nonstop2h 42mAmerican Airlines
Tue 6/259:06 amSTL - PHL
Nonstop2h 18mAmerican Airlines
Deal found 5/15$131
Fri 7/58:46 amPHL - STL
Nonstop2h 30mMultiple Airlines
Tue 7/93:23 pmSTL - PHL
1 stop8h 23mMultiple Airlines
Deal found 5/15$134
Sat 6/2212:51 pmPHL - STL
Nonstop2h 27mFrontier
Tue 6/253:47 pmSTL - PHL
1 stop12h 49mFrontier
Deal found 5/16$136

Non-stop flights to St. Louis from Pennsylvania

Discover non-stop flight options from Pennsylvania to St. Louis. 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 Pennsylvania to St. Louis. Search for alternative flights from Pennsylvania to St. Louis by utilizing the search form above.
Sat 6/227:14 pmPHL - STL
Nonstop2h 42mAmerican Airlines
Tue 6/259:06 amSTL - PHL
Nonstop2h 18mAmerican Airlines
Deal found 5/15$131
Fri 6/78:19 pmPHL - STL
Nonstop2h 27mFrontier
Mon 6/1010:36 pmSTL - PHL
Nonstop2h 12mFrontier
Deal found 5/14$147
Wed 7/37:14 pmPHL - STL
Nonstop2h 42mAmerican Airlines
Sun 7/76:08 amSTL - PHL
Nonstop2h 15mAmerican Airlines
Deal found 5/15$156
Sun 5/267:11 pmPHL - STL
Nonstop2h 44mAmerican Airlines
Wed 5/296:40 amSTL - PHL
Nonstop2h 10mAmerican Airlines
Deal found 5/14$176
Wed 6/268:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Tue 7/25:42 pmSTL - DCA
Nonstop2h 01mAmerican Airlines
Deal found 5/16$179
Tue 6/258:00 pmDCA - STL
Nonstop2h 28mAmerican Airlines
Tue 7/26:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Deal found 5/16$181
Tue 8/68:00 pmDCA - STL
Nonstop2h 16mAmerican Airlines
Wed 8/76:12 amSTL - DCA
Nonstop1h 59mAmerican Airlines
Deal found 5/15$189
Thu 5/302:19 pmDCA - STL
Nonstop2h 16mAmerican Airlines
Thu 6/136:09 amSTL - DCA
Nonstop2h 02mAmerican Airlines
Deal found 5/15$190
Fri 5/247:11 pmPHL - STL
Nonstop2h 44mAmerican Airlines
Tue 5/286:40 amSTL - PHL
Nonstop2h 10mAmerican Airlines
Deal found 5/15$196

Pennsylvania to St. Louis flights leaving soon

Find last-minute flight options from Pennsylvania to St. Louis 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.
Consider one of these great deals we found on last-minute flights from Pennsylvania to St. Louis. Users should double check the flight they book to ensure it matches the day, time, and destination they're looking for.
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Mon 5/275:57 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/14$95
Wed 5/226:30 amPHL - STL
Nonstop2h 27mFrontier
Wed 5/299:10 pmSTL - PHL
1 stop12h 05mFrontier
Deal found 5/15$118
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Tue 5/287:44 pmSTL - PHL
1 stop12h 58mFrontier
Deal found 5/15$138
Fri 5/2410:53 amPHL - STL
Nonstop2h 27mFrontier
Tue 5/2810:44 pmSTL - PHL
1 stop12h 26mFrontier
Deal found 5/16$158
Tue 5/211:15 pmPHL - STL
1 stop21h 21mFrontier
Sat 5/258:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/15$159
Wed 5/225:35 amPHL - STL
1 stop15h 35mFrontier
Fri 5/241:10 pmSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/15$165
Sun 5/267:11 pmPHL - STL
Nonstop2h 44mAmerican Airlines
Wed 5/296:40 amSTL - PHL
Nonstop2h 10mAmerican Airlines
Deal found 5/14$176
Sun 5/265:10 amPHL - STL
1 stop13h 19mMultiple Airlines
Wed 5/298:47 amSTL - PHL
Nonstop2h 14mMultiple Airlines
Deal found 5/14$178
Wed 5/225:35 amPHL - STL
1 stop15h 35mFrontier
Sat 5/258:57 amSTL - PHL
Nonstop2h 14mFrontier
Deal found 5/15$180

One-way flights to St. Louis from Pennsylvania

Search for one-way flight options from Pennsylvania to St. Louis. 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.
Users traveling one-way from Pennsylvania to St. Louis can select one of these great deals. For those needing a return trip from Pennsylvania, there is a search form available above.
Sat 8/312:54 pmPHL - STL
Nonstop2h 25mFrontier
Deal found 5/16$37
Fri 8/27:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/16$39
Fri 6/148:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$40
Mon 6/178:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/16$42
Mon 7/227:18 pmPHL - STL
Nonstop2h 24mFrontier
Deal found 5/16$52
Wed 6/268:19 pmPHL - STL
Nonstop2h 27mFrontier
Deal found 5/15$54
Tue 6/116:30 amLGA - STL
1 stop8h 53mSpirit Airlines
Deal found 5/15$58
Tue 6/45:45 amEWR - STL
1 stop8h 52mSpirit Airlines
Deal found 5/15$61
Mon 6/310:59 pmEWR - STL
1 stop15h 38mSpirit Airlines
Deal found 5/15$62

Find flights from Pennsylvania to St. Louis within your budget

Customize your flight search to find flights from Pennsylvania to St. Louis 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

$55 - $194

Route

Depart

Return

Price

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Sat 6/1

Nonstop2h 27m

Lambert-St Louis

Sat 7/13

Nonstop2h 12m

$55

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Wed 5/29

Nonstop2h 27m

Lambert-St Louis

Sat 6/1

Nonstop2h 14m

$58

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Fri 6/21

Nonstop2h 27m

Lambert-St Louis

Sat 6/22

Nonstop2h 12m

$68

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Sat 6/29

Nonstop2h 27m

Lambert-St Louis

Mon 7/1

Nonstop2h 12m

$69

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Wed 7/10

Nonstop2h 24m

Lambert-St Louis

Mon 7/15

Nonstop2h 12m

$70

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Tue 6/4

1 stop8h 06m

Lambert-St Louis

Wed 6/5

Nonstop2h 12m

$71

NewarkLambert-St Louis

EWR - STL

EWRSTL

Newark

Sat 6/8

1 stop9h 24m

Lambert-St Louis

Tue 6/11

1 stop13h 01m

$101

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Sat 6/22

Nonstop2h 42m

Lambert-St Louis

Tue 6/25

Nonstop2h 18m

$131

PhiladelphiaLambert-St Louis

PHL - STL

PHLSTL

Philadelphia

Tue 5/28

1 stop7h 14m

Lambert-St Louis

Fri 5/31

1 stop4h 53m

$194

Flights are sorted by cheapest first

Deals found on 5/16

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

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated May 16, 2024.
To help decide which airline to fly from Pennsylvania to St. Louis, see what other customers have to say about Frontier, Spirit Airlines and American 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

Boarding

8.3

Entertainment

7.8

Overall

8.2

Comfort

8.1

Food

7.3

Crew

8.7

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

Boarding

8.3

Entertainment

7.8

Overall

8.2

Comfort

8.1

Food

7.3

Crew

8.7

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

Boarding

8.3

Entertainment

7.8

Overall

8.2

Comfort

8.1

Food

7.3

Crew

8.7

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

Boarding

8.3

Entertainment

7.8

Overall

8.2

Comfort

8.1

Food

7.3

Crew

8.7

Reviews

1 / 10

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

WestJet
7.5
Good
2,919 reviews
Southwest
8.2
Very good
6,040 reviews
Check prices

Boarding

8.3

Entertainment

7.8

Overall

8.2

Comfort

8.1

Food

7.3

Crew

8.7

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

Boarding

8.3

Entertainment

7.8

Overall

8.2

Comfort

8.1

Food

7.3

Crew

8.7

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 Pennsylvania to St. Louis. 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 into for flights to St. Louis from Pennsylvania?

    Located just 12.7 mi from the city center, Lambert-St Louis (STL) is the airport most travelers will use when flying to St. Louis from Pennsylvania.

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

    Yes, there are multiple flights from Pennsylvania to St. Louis for under $100. The cheapest flight booked recently is on Frontier for just $55, but on average you can expect to pay $85.

  • Are there nonstop flights from Pennsylvania to St. Louis for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from Pennsylvania to St. Louis under $200. A good price for a nonstop flight from Pennsylvania to St. Louis is less than $198.

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

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

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

    Flights from Pennsylvania to Lambert-St Louis have been viewed 4 times in the past calendar month.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $37. Users have also found prices from $58 and $66 on Spirit Airlines and American Airlines, respectively.

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

    While some choose either Newark - Lambert-St Louis or New York John F Kennedy Intl - Lambert-St Louis, New York LaGuardia - Lambert-St Louis is the most popular route from Pennsylvania to St. Louis.

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

    Consider American Airlines, Delta or Frontier when booking your flight. These represent the most popular airlines when flying from Pennsylvania to St. Louis.

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

    Consider Southwest (78%), British Airways (74%) or Qatar Airways (63%) when booking your flight. These represent the most reliable airlines when flying from Pennsylvania to St. Louis.

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

    The cheapest flight price from Pennsylvania to St. Louis is $33. On average you can expect to pay $202. The most popular route, (New York LaGuardia - Lambert-St Louis), can usually be booked for $106.

  • What does PHL to STL mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Philadelphia Airport to Lambert-St Louis Airport flight would often be abbreviated as a PHL to STL flight. While you’re still figuring out your travel plans, it’s not a bad idea to learn the names and codes of other airports around these areas: Pittsburgh Airport (PIT), Harrisburg Airport (MDT), Allentown-Bethlehem Airport (ABE), Wilkes-Barre Scranton Airport (AVP), State College University Park Airport (SCE).

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

    The amount of baggage you can bring on your Pennsylvania to St. Louis 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 Pennsylvania to St. Louis with specific airlines?

    Yes, Cheapflights allows you to browse and filter Pennsylvania to St. Louis 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 Pennsylvania to St. Louis that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from Pennsylvania to St. Louis 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 Pennsylvania to St. Louis that allow pets onboard?

    Many airlines flying from Pennsylvania to St. Louis 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 Pennsylvania to St. Louis?

    Yes, you can often find last-minute deals on Pennsylvania to St. Louis 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 Pennsylvania to St. Louis flight deals updated?

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

See more FAQs

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

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Top 5 airlines flying from Pennsylvania to St. Louis

Discover the top 5 airlines that operate flights from Pennsylvania to St. Louis. 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$59Average$188FlexibilityNo cancel feeOn-time62%
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Spirit AirlinesCheapest$125Average$229FlexibilityNo cancel feeOn-time65%
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American AirlinesCheapest$203Average$379FlexibilityNo cancel feeOn-time71%
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DeltaCheapest$242Average$408FlexibilityNo cancel feeOn-timeN/A
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United AirlinesCheapest$247Average$529FlexibilityNo cancel feeOn-time69%
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Search flights from Pennsylvania to St. Louis by cabin class

Find flights from Pennsylvania to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Pennsylvania to St. Louis

Find hourly flight availability from Pennsylvania to St. Louis. 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.
1%of flight departuresEarly morningMidnight to 6 am
31%of flight departuresMorning6 am to noon
1%of flight departuresAfternoonNoon to 6 pm
67%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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

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

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

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Certainly. Search results for flights to St. Louis from Pennsylvania shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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