HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news

Cheap flights from St. Louis to Harlingen (STL - HRL) from $308

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. 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 — HRL
May 7 — May 141
From?
To?
Tue 5/7
Tue 5/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Cheap flight deals from St. Louis to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Harlingen (HRL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated May 2, 2024.

Popular in

October

Cheapest in

November

Round-trip from

$266
High demand for flights, 22% potential price rise
Search Deals
Best time to find cheap flights, 31% potential price drop
Search Deals
From Lambert-St Louis to Harlingen Valley Intl
Search Deals

What is the cheapest day to fly round-trip from St. Louis to Harlingen, Texas?

Departing on a Monday is a good option for securing a great price. You can expect to save up to 46% when planning your travel around this day of the week.

What is the cheapest month to fly from St. Louis to Harlingen, Texas?

Flights from St. Louis to Harlingen, Texas lean towards being more expensive in October. Prices are generally better when you fly from St. Louis to Harlingen, Texas in November, with the cheapest ticket starting at $297.

When is the cheapest time to fly from St. Louis to Harlingen, Texas (STL - HRL)?

Unlike in the morning, when flights are generally more expensive, you can save up to 19% on flights from St. Louis to Harlingen, Texas by exploring options for tickets at noon.

Cheap United Airlines flights from St. Louis to Harlingen

Explore cheap flight options specifically provided by United Airlines for the route between St. Louis and Harlingen. 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 2,899,487 searches. Data last updated May 2, 2024.
Mon 5/134:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Tue 5/2112:10 pmHRL - STL
1 stop4h 13mUnited Airlines
Deal found 5/1$308
Tue 5/711:10 amSTL - HRL
1 stop4h 50mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 4/30$388
Tue 5/74:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 5/1$438
Mon 5/134:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Tue 5/215:20 pmHRL - STL
2 stops16h 54mUnited Airlines
Deal found 5/1$463
Tue 5/78:47 amSTL - HRL
2 stops12h 27mUnited Airlines
Sat 5/119:48 amHRL - STL
1 stop6h 35mUnited Airlines
Deal found 4/30$502
Tue 5/76:19 amSTL - HRL
1 stop4h 47mUnited Airlines
Sat 5/117:15 amHRL - STL
2 stops13h 54mUnited Airlines
Deal found 5/1$552
Mon 5/134:51 pmSTL - HRL
2 stops18h 15mUnited Airlines
Tue 5/215:20 pmHRL - STL
2 stops16h 54mUnited Airlines
Deal found 5/1$597

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

Find cheap flight options from St. Louis to Harlingen specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Prices were last updated on May 2, 2024.
Mon 5/134:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Tue 5/2112:10 pmHRL - STL
1 stop4h 13mUnited Airlines
Deal found 5/1$308
Tue 5/711:10 amSTL - HRL
1 stop4h 50mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 4/30$388
Tue 5/74:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 5/1$438
Mon 5/134:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Tue 5/215:20 pmHRL - STL
2 stops16h 54mUnited Airlines
Deal found 5/1$463
Tue 5/78:47 amSTL - HRL
2 stops12h 27mUnited Airlines
Sat 5/119:48 amHRL - STL
1 stop6h 35mUnited Airlines
Deal found 4/30$502
Tue 5/76:19 amSTL - HRL
1 stop4h 47mUnited Airlines
Sat 5/117:15 amHRL - STL
2 stops13h 54mUnited Airlines
Deal found 5/1$552
Tue 5/73:00 pmSTL - HRL
2 stops8h 59mAmerican Airlines
Sat 5/1112:22 pmHRL - STL
2 stops9h 25mAmerican Airlines
Deal found 4/30$578
Mon 5/134:51 pmSTL - HRL
2 stops18h 15mUnited Airlines
Tue 5/215:20 pmHRL - STL
2 stops16h 54mUnited Airlines
Deal found 5/1$597

St. Louis to Harlingen 2024 flight deals

Discover exclusive flight deals for travel between St. Louis and Harlingen in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,899,487 searches. Data last updated May 2, 2024.
Mon 5/134:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Tue 5/2112:10 pmHRL - STL
1 stop4h 13mUnited Airlines
Deal found 5/1$308
Tue 5/711:10 amSTL - HRL
1 stop4h 50mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 4/30$388
Tue 5/74:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 5/1$438
Mon 5/134:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Tue 5/215:20 pmHRL - STL
2 stops16h 54mUnited Airlines
Deal found 5/1$463
Tue 5/78:47 amSTL - HRL
2 stops12h 27mUnited Airlines
Sat 5/119:48 amHRL - STL
1 stop6h 35mUnited Airlines
Deal found 4/30$502
Tue 5/76:19 amSTL - HRL
1 stop4h 47mUnited Airlines
Sat 5/117:15 amHRL - STL
2 stops13h 54mUnited Airlines
Deal found 5/1$552
Tue 5/73:00 pmSTL - HRL
2 stops8h 59mAmerican Airlines
Sat 5/1112:22 pmHRL - STL
2 stops9h 25mAmerican Airlines
Deal found 4/30$578
Mon 5/134:51 pmSTL - HRL
2 stops18h 15mUnited Airlines
Tue 5/215:20 pmHRL - STL
2 stops16h 54mUnited Airlines
Deal found 5/1$597

St. Louis to Harlingen flights leaving soon

Find last-minute flight options from St. Louis to Harlingen 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 2,899,487 searches. Data last updated May 2, 2024.
Tue 5/711:10 amSTL - HRL
1 stop4h 50mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 4/30$388
Tue 5/74:57 pmSTL - HRL
1 stop4h 17mUnited Airlines
Sat 5/115:20 pmHRL - STL
1 stop5h 25mUnited Airlines
Deal found 5/1$438
Tue 5/78:47 amSTL - HRL
2 stops12h 27mUnited Airlines
Sat 5/119:48 amHRL - STL
1 stop6h 35mUnited Airlines
Deal found 4/30$502
Tue 5/76:19 amSTL - HRL
1 stop4h 47mUnited Airlines
Sat 5/117:15 amHRL - STL
2 stops13h 54mUnited Airlines
Deal found 5/1$552
Tue 5/73:00 pmSTL - HRL
2 stops8h 59mAmerican Airlines
Sat 5/1112:22 pmHRL - STL
2 stops9h 25mAmerican Airlines
Deal found 4/30$578

Find flights from St. Louis to Harlingen within your budget

Customize your flight search to find flights from St. Louis to Harlingen 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 2,899,487 searches. Data last updated May 2, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$308 - $597

Route

Depart

Return

Price

Lambert-St LouisHarlingen Valley Intl

STL - HRL

STLHRL

Lambert-St Louis

Mon 5/13

1 stop4h 17m

Harlingen Valley Intl

Tue 5/21

1 stop4h 13m

$308

Lambert-St LouisHarlingen Valley Intl

STL - HRL

STLHRL

Lambert-St Louis

Mon 5/13

1 stop4h 17m

Harlingen Valley Intl

Tue 5/21

2 stops16h 54m

$463

Lambert-St LouisHarlingen Valley Intl

STL - HRL

STLHRL

Lambert-St Louis

Mon 5/13

2 stops18h 15m

Harlingen Valley Intl

Tue 5/21

2 stops16h 54m

$597

Flights are sorted by cheapest first

Deals found on 5/1

When is the cheapest time to fly from St. Louis to Harlingen, Texas?

Use this chart to determine the cheapest time to fly round-trip from St. Louis to Harlingen. Price data was last updated on April 28, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their St. Louis to Harlingen, Texas flight should consider departing on Thursday afternoons when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Harlingen by month

Plan your trip from St. Louis to Harlingen by taking into account the cheapest months to travel. The average price of a one-way flight from St. Louis to Harlingen is currently $0 while a round-trip flight costs $456. Price data was last updated on April 28, 2024.

Currently, April is the cheapest month in which you can book a flight from St. Louis to Harlingen, Texas (average of $266). Flying from St. Louis to Harlingen, Texas in July is currently the most expensive (average of $474). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$276

February

$304

March

$366

April

$266

May

$386

June

$473

July

$474

August

$360

September

$361

October

$366

November

$383

December

$341

Temperature and rainfall in Harlingen by month

Plan your trip to Harlingen by taking into account the average temperature and rainfall totals by month.

HRL

Temperature

60.8 - 84.2 °F

Reviews of airlines servicing Harlingen

Get insights into the airlines that provide service to Harlingen. 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 Harlingen. Reviews last updated May 2, 2024.
United Airlines
7.4
Good
11,159 reviews
Check prices

Crew

8.1

Comfort

7.2

Food

6.7

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

United Airlines
7.4
Good
11,159 reviews
United Airlines
7.4
Good
11,159 reviews
Check prices

Crew

8.1

Comfort

7.2

Food

6.7

Overall

7.4

Entertainment

7.1

Boarding

7.7

Reviews

1 / 10

The staff were pleasant. There was no food or entertainment.

Related info for your journey

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

  • Can I find flights from St. Louis to Harlingen, Texas for under $400 on Cheapflights?

    Yes, there are multiple flights from St. Louis to Harlingen, Texas for under $400. The cheapest flight booked recently is on United Airlines for just $308, but on average you can expect to pay $456.

  • Are there last-minute flights available from St. Louis to Harlingen, Texas for under $400?

    There are currently 5+ open flights from St. Louis to Harlingen, Texas within the next 7 days for less than $400.

  • What is the cheapest airline to fly from St. Louis to Harlingen, Texas round-trip?

    United Airlines, at $308, was found to be the cheapest airline from St. Louis to Harlingen, Texas.. United Airlines is 30% cheaper than the average price of flights available within the next 90 days to this destination.

  • What does STL to HRL mean?

    This is defined as Lambert-St Louis Airport (STL) and Harlingen Valley Intl Airport (HRL). Codes like Harlingen Valley Intl Airport are often used to just call airports uniquely.

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

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

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

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

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

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

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

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

    Many airlines flying from St. Louis to Harlingen 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 Harlingen?

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

    The St. Louis to Harlingen, Texas flight deals you see on this page were last updated on 5/1.

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 Harlingen
See prices for flight routes from nearby airports that may be better suited for you.

St. Louis to Hobby flights
St. Louis to Dallas/Fort Worth flights
Kansas City to Dallas/Fort Worth flights
St. Louis to George Bush Intcntl flights
Kansas City to Hobby flights
Kansas City to George Bush Intcntl flights
St. Louis to Love Field flights
Springfield to Hobby flights
St. Louis to San Antonio flights
Kansas City to Love Field flights
Springfield to George Bush Intcntl flights
Springfield to Dallas/Fort Worth flights
St. Louis to Austin flights
Kansas City to Austin flights
Kansas City to San Antonio flights
Kansas City to El Paso flights
Columbia to Dallas/Fort Worth flights
St. Louis to El Paso flights
Columbia to Hobby flights
Kansas City to Corpus Christi flights
Springfield to San Antonio flights
St. Louis to McAllen flights
Columbia to George Bush Intcntl flights
Kansas City to McAllen flights
Springfield to Austin flights
St. Louis to Amarillo flights
Kansas City to Harlingen flights
Springfield to El Paso flights
St. Louis to Brownsville flights
Kansas City to Brownsville flights
St. Louis to Killeen flights
St. Louis to Waco flights
St. Louis to Corpus Christi flights
Springfield to McAllen flights
Joplin to Dallas/Fort Worth flights
Springfield to Love Field flights
Joplin to George Bush Intcntl flights
Columbia to Austin flights
Kansas City to Lubbock flights
St. Louis to Lubbock flights
Kansas City to San Angelo flights
Kansas City to Amarillo flights
St. Louis to Longview flights
Kansas City to Beaumont flights
St. Louis to Midland flights
Kansas City to Killeen flights
St. Louis to Tyler flights
Columbia to Killeen flights

Top 2 airlines flying from St. Louis to Harlingen

Discover the top 2 airlines that operate flights from St. Louis to Harlingen. 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 2,899,487 searches. Data last updated May 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$222Average$377FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$309Average$457FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
New York to California flights
Austin to Dallas flights
Dallas to Los Angeles flights
Los Angeles to New York John F Kennedy Intl Airport flights
Los Angeles to Chicago flights
Austin to Hawaii flights
Boston to London flights
Chicago to Indianapolis flights
San Francisco to Rome flights
Los Angeles to Auckland flights
California to Texas flights
St. Louis to Huntsville flights

Search flights from St. Louis to Harlingen by cabin class

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

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 Saint Peter Jersey
Flights to Kirkwall Arpt
Flights to Skiathos
Flights to Naxos
Flights to Ningbo Lishe Intl
Flights to Edremit/Korfez
Flights to Bourgas
Flights to Bodø
Flights to Pellston Emmet County
Flights to Cornwall Newquay
Flights to Ordu/Giresun
Flights to Batumi
Flights to Mason City
Flights to Biarritz Parme
Flights to Zakynthos Dionsios Salomos
Flights to Cortez Montezuma County
Flights to Clermont-Ferrand Aulnat
Flights to Nevsehir
Flights to Hyannis Barnstable
Flights to Girona Costa Brava
Flights to Kagoshima
Flights to Perugia Sant Egidio
Flights to Oran Es Senia
Flights to Chios

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 Harlingen?

Cheapflights helps you search for flights from St. Louis to Harlingen via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from St. Louis to Harlingen.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from St. Louis to Harlingen, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Harlingen 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