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Harlingen

$99+ Cheap flights from Missouri to Harlingen, TX (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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HRL
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheap flight deals from Missouri to Harlingen

Keep the following information in mind while searching for Missouri to Harlingen flight deals. Data was last updated August 14, 2025.

Round-trip from

$197
(American Airlines)

One-way from

$99
(American Airlines)

Popular in

October

Cheapest in

September

Average price

$268
From Missouri to Harlingen Valley Intl
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One-way flight from Missouri to Harlingen Valley Intl
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High demand for flights, 7% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Missouri to Harlingen

Cheapest flights from Missouri to Harlingen
Explore the most affordable flight options available from Missouri to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This American Airlines deal was found by Cheapflights users on 8/13. 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.
Fri 9/55:32 amMCI - HRL
1 stop4h 09mAmerican Airlines
Fri 9/196:35 pmHRL - MCI
1 stop4h 32mAmerican Airlines
Deal found 8/13$197
This Southwest deal was found by Cheapflights users on 8/13. 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.
Fri 9/54:25 pmMCI - HRL
2 stops5h 50mSouthwest
Fri 9/196:50 pmHRL - MCI
1 stop4h 05mSouthwest
Deal found 8/13$233
This Southwest deal was found by Cheapflights users on 8/12. 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.
Sun 9/145:35 amSTL - HRL
1 stop4h 05mSouthwest
Sun 9/144:00 pmHRL - STL
1 stop6h 40mSouthwest
Deal found 8/12$243
This Southwest deal was found by Cheapflights users on 8/12. 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.
Wed 8/139:00 amMCI - HRL
1 stop4h 35mSouthwest
Wed 8/203:55 pmHRL - MCI
1 stop6h 50mSouthwest
Deal found 8/12$331
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Wed 8/274:32 pmSTL - HRL
1 stop5h 20mUnited Airlines
Sun 8/315:20 pmHRL - STL
1 stop4h 48mUnited Airlines
Deal found 8/12$339
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 8/285:15 amSTL - HRL
1 stop4h 17mAmerican Airlines
Mon 9/15:30 amHRL - STL
1 stop6h 20mAmerican Airlines
Deal found 8/13$369
This United Airlines deal was found by Cheapflights users on 8/12. 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.
Wed 8/139:15 amMCI - HRL
2 stops12h 35mUnited Airlines
Wed 8/205:00 amHRL - MCI
2 stops9h 20mUnited Airlines
Deal found 8/12$436
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Tue 12/234:17 pmSTL - HRL
1 stop27h 19mUnited Airlines
Sun 12/285:00 amHRL - STL
1 stop4h 49mUnited Airlines
Deal found 8/14$440
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 8/2811:30 amSTL - HRL
2 stops10h 22mUnited Airlines
Mon 9/15:00 amHRL - STL
1 stop5h 01mUnited Airlines
Deal found 8/13$481
This American Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 8/285:45 amMCI - HRL
1 stop3h 47mAmerican Airlines
Mon 9/15:30 amHRL - MCI
1 stop4h 19mAmerican Airlines
Deal found 8/13$483
This United Airlines deal was found by Cheapflights users on 8/13. 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.
Thu 8/286:05 amMCI - HRL
1 stop4h 45mUnited Airlines
Mon 9/17:00 amHRL - MCI
1 stop5h 00mUnited Airlines
Deal found 8/13$572
This United Airlines deal was found by Cheapflights users on 8/14. 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.
Fri 8/298:30 amMCI - HRL
1 stop11h 03mUnited Airlines
Tue 9/25:00 amHRL - MCI
1 stop7h 00mUnited Airlines
Deal found 8/14$588

Cheapflights Fare Finder

 
Customize your flight search to find flights from Missouri 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 August 14, 2025.
Use the filters below to find and compare flights from Missouri to Harlingen that are best for you.

Fly from

Missouri

Fly to

Harlingen

Route

Depart

Return

Price

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Fri 9/5

5:32 am-9:41 am

1 stop4h 09m

Harlingen Valley Intl

Fri 9/19

6:35 pm-11:07 pm

1 stop4h 32m

$197

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Fri 9/5

4:25 pm-10:15 pm

2 stops5h 50m

Harlingen Valley Intl

Fri 9/19

6:50 pm-10:55 pm

1 stop4h 05m

$233

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sun 9/14

5:35 am-9:40 am

1 stop4h 05m

Harlingen Valley Intl

Sun 9/14

4:00 pm-10:40 pm

1 stop6h 40m

$243

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Wed 8/27

4:32 pm-9:52 pm

1 stop5h 20m

Harlingen Valley Intl

Sun 8/31

5:20 pm-10:08 pm

1 stop4h 48m

$339

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 8/28

5:15 am-9:32 am

1 stop4h 17m

Harlingen Valley Intl

Mon 9/1

5:30 am-11:50 am

1 stop6h 20m

$369

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 12/23

4:17 pm-7:36 pm

1 stop27h 19m

Harlingen Valley Intl

Sun 12/28

5:00 am-9:49 am

1 stop4h 49m

$440

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Thu 8/28

5:45 am-9:32 am

1 stop3h 47m

Harlingen Valley Intl

Mon 9/1

5:30 am-9:49 am

1 stop4h 19m

$483

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Thu 8/28

6:05 am-10:50 am

1 stop4h 45m

Harlingen Valley Intl

Mon 9/1

7:00 am-12:00 pm

1 stop5h 00m

$572

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Fri 12/26

3:00 pm-7:36 pm

1 stop4h 36m

Harlingen Valley Intl

Sat 1/3

5:00 am-10:36 am

1 stop5h 36m

$674

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Sat 10/4

5:32 am-9:41 am

1 stop4h 09m

$99

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/13

Showing 1-10 of 14 results
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Best time to book a flight from Missouri to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Missouri 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.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Harlingen

What is the cheapest month to book a flight from Missouri to Harlingen, Texas?

Currently, April is the cheapest month in which you can book a flight from Missouri to Harlingen, Texas (average of $267). Flying from Missouri to Harlingen, Texas in June is currently the most expensive (average of $381). 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 MO to HRL?

Find hourly flight availability from Missouri 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 August 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Missouri to Harlingen, Texas as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Harlingen. 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 Harlingen from Missouri?

    If you book a flight to Harlingen from Missouri, you will be flying to Valley Intl, which is the city’s only airport. Harlingen Valley Intl (HRL) is located 3.7 mi from the center of Harlingen.

  • Can I find deals for flights from Missouri to Harlingen that include hotel bookings?

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

  • How can I find direct flights from Missouri to Harlingen?

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

  • Can I find deals for business class flights from Missouri to Harlingen?

    Yes. Cheapflights offers flight deals from Missouri 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 Missouri to Harlingen, Texas?

    Currently, April is the cheapest month in which you can book a flight from Missouri to Harlingen, Texas (average of $267). Flying from Missouri to Harlingen, Texas in June is currently the most expensive (average of $381). 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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Alternative routes for Missouri to Harlingen

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Top 4 airlines flying from Missouri to Harlingen

Discover the top 4 airlines that operate flights from Missouri 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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$330FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$208Average$315FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$208Average$370FlexibilityNo cancel feeOn-time71%
DeltaCheapest$353Average$421FlexibilityNo cancel feeOn-timeN/A

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