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Harlingen

$100+ Cheap flights from St. Louis to Harlingen, TX (STL - HRL)

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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HRL
Jan 20 — Jan 271
Mon 1/20
Mon 1/27
1 adult, Economy
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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 January 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$258
(American Airlines)

One-way from

$100
(American Airlines)

Popular in

July

Cheapest in

April

Average price

$286
Provider with most accurate pricing for Lambert-St Louis-Harlingen Valley Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Harlingen Valley Intl flights.
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From Lambert-St Louis to Harlingen Valley Intl
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One-way flight from Lambert-St Louis to Harlingen Valley Intl
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High demand for flights, 9% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from St. Louis to Harlingen

Cheapest flights from St. Louis to Harlingen
Explore the most affordable flight options available from St. Louis to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 15, 2025.

This American Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/125:03 amSTL - HRL
1 stop4h 49mAmerican Airlines
Wed 2/1910:16 amHRL - STL
1 stop6h 17mAmerican Airlines
Deal found 1/15$259
This Delta deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/26:00 amSTL - HRL
1 stop7h 51mDelta
Thu 2/62:46 pmHRL - STL
1 stop8h 23mDelta
Deal found 1/15$263
This United Airlines deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/14:36 pmSTL - HRL
1 stop7h 00mUnited Airlines
Thu 2/65:22 pmHRL - STL
1 stop4h 58mUnited Airlines
Deal found 1/15$298
This Southwest deal was found by Cheapflights users on 1/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/102:25 pmSTL - HRL
2 stops7h 55mSouthwest
Mon 2/174:00 pmHRL - STL
1 stop5h 10mSouthwest
Deal found 1/15$438

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 2,558,603 searches. Data last updated January 15, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 2/7

5:03 am-9:52 am

1 stop4h 49m

Harlingen Valley Intl

Thu 2/13

10:16 am-4:33 pm

1 stop6h 17m

$258

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sun 2/2

6:00 am-1:51 pm

1 stop7h 51m

Harlingen Valley Intl

Thu 2/6

2:46 pm-11:09 pm

1 stop8h 23m

$263

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 2/7

6:15 am-11:19 am

1 stop5h 04m

Harlingen Valley Intl

Thu 2/13

5:15 am-2:36 pm

2 stops9h 21m

$279

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 2/25

11:15 am-5:50 pm

2 stops6h 35m

Harlingen Valley Intl

Mon 3/3

10:40 am-6:15 pm

2 stops7h 35m

$379

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Mon 3/10

5:37 pm-12:03 am

1 stop6h 26m

$130

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Mon 3/10

1:05 pm-11:14 pm

2 stops10h 09m

$186

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Mon 3/10

4:10 pm-12:05 am

2 stops7h 55m

$233

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/14

Compare providers for flights from St. Louis to Harlingen

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Harlingen in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Harlingen, Texas flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Harlingen, Texas flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-Harlingen, Texas flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Harlingen, Texas flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Harlingen, Texas flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Travel insights for flights from St. Louis to Harlingen

Get recent, data-driven insights about flights from St. Louis to Harlingen including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from St. Louis to Harlingen, Texas?

Currently, April is the cheapest month in which you can book a flight from St. Louis to Harlingen, Texas (average of $267). Flying from St. Louis to Harlingen, Texas in July is currently the most expensive (average of $420). 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.

What is the cheapest time of day to fly from STL to HRL?

Find hourly flight availability from St. Louis to Harlingen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 15, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 6% on flights from St. Louis to Harlingen, Texas by exploring options for tickets at noon.

Rainfall in Harlingen by month

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

In terms of precipitation, rainfall in Harlingen, Texas ranges from 1.1 - 5.2 inches per month. September is typically the wettest month, when rainfall can reach 5.2 in. January is typically the driest time to visit Harlingen, Texas when rainfall is around 1.1 in.

Temperature in Harlingen by month

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

If weather is an important factor for your trip to Harlingen, Texas, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 60.8 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 January 15, 2025.
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
8,964 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Crew

8.7

Boarding

8.2

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

8.1

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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.

  • What are the cheapest airlines flying from St. Louis to Harlingen, Texas round-trip?

    American Airlines, at $258, was found to be the cheapest airline from St. Louis to Harlingen, Texas.Alternate airlines to your destination round-trip include Delta and United Airlines. American Airlines is 28% cheaper than the average price of flights available within the next 90 days to this destination.

  • 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.

  • What is the cheapest month to book a flight from St. Louis to Harlingen, Texas?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to Harlingen, Texas (average of $267). Flying from St. Louis to Harlingen, Texas in July is currently the most expensive (average of $420). 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.

See more FAQs

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Top 4 airlines flying from St. Louis to Harlingen

Discover the top 4 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 2,558,603 searches. Data last updated January 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$208Average$326FlexibilityNo cancel feeOn-time71%
DeltaCheapest$257Average$421FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$283Average$453FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$289Average$397FlexibilityNo cancel feeOn-time63%
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