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Harlingen

$166+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HRL
nov. 1 — nov. 81
sáb. 11/1
sáb. 11/8
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 octubre 2, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$246
(Southwest)

One-way from

$166
(United Airlines)

Popular in

March

Cheapest in

May

Average price

$393
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 Missouri to Harlingen Valley Intl
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One-way flight from Missouri to Harlingen Valley Intl
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Highest demand for flights based on searches. 14% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in October 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 octubre 2, 2025.

This Southwest deal was found by Cheapflights users on 10/2. 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.
vie. 10/318:30 amSTL - HRL
1 stop11h 20mSouthwest
lun. 11/37:30 amHRL - STL
1 stop6h 55mSouthwest
Deal found 10/2$246
This American Airlines deal was found by Cheapflights users on 9/30. 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.
mar. 11/255:15 amMCI - HRL
1 stop4h 28mAmerican Airlines
mié. 12/312:13 pmHRL - MCI
1 stop4h 26mAmerican Airlines
Deal found 9/30$283
This American Airlines deal was found by Cheapflights users on 10/2. 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.
sáb. 10/185:34 amMCI - HRL
1 stop4h 04mAmerican Airlines
mar. 10/216:37 pmHRL - MCI
1 stop4h 13mAmerican Airlines
Deal found 10/2$289
This Southwest deal was found by Cheapflights users on 9/30. 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.
vie. 10/175:30 amSTL - HRL
1 stop8h 15mSouthwest
dom. 10/198:15 pmHRL - STL
1 stop3h 50mSouthwest
Deal found 9/30$304
This Southwest deal was found by Cheapflights users on 10/2. 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.
sáb. 10/185:20 amMCI - HRL
1 stop7h 35mSouthwest
mar. 10/217:30 amHRL - MCI
2 stops8h 20mSouthwest
Deal found 10/2$327
This American Airlines deal was found by Cheapflights users on 9/29. 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.
mar. 10/75:34 amMCI - HRL
1 stop4h 04mAmerican Airlines
mar. 10/146:37 pmHRL - MCI
1 stop4h 13mAmerican Airlines
Deal found 9/29$329
This United Airlines deal was found by Cheapflights users on 9/30. 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.
mié. 10/86:05 amMCI - HRL
1 stop7h 14mUnited Airlines
sáb. 10/115:17 pmHRL - MCI
1 stop5h 10mUnited Airlines
Deal found 9/30$337
This Southwest deal was found by Cheapflights users on 9/30. 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.
mar. 10/75:40 pmSTL - HRL
1 stop4h 00mSouthwest
jue. 10/99:45 amHRL - STL
1 stop5h 00mSouthwest
Deal found 9/30$345
This United Airlines deal was found by Cheapflights users on 10/2. 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.
sáb. 10/187:30 amMCI - HRL
2 stops8h 43mUnited Airlines
mar. 10/215:00 amHRL - MCI
2 stops7h 42mUnited Airlines
Deal found 10/2$347
This Southwest deal was found by Cheapflights users on 10/2. 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.
sáb. 10/113:25 pmSTL - HRL
1 stop5h 15mSouthwest
dom. 10/128:15 pmHRL - STL
1 stop3h 50mSouthwest
Deal found 10/2$356
This American Airlines deal was found by Cheapflights users on 10/1. 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.
jue. 10/25:18 amSTL - HRL
1 stop4h 23mAmerican Airlines
mié. 10/86:37 pmHRL - STL
1 stop4h 41mAmerican Airlines
Deal found 10/1$379
This American Airlines deal was found by Cheapflights users on 9/30. 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.
vie. 12/199:44 amMCI - HRL
1 stop4h 34mAmerican Airlines
mar. 12/238:11 pmHRL - MCI
1 stop4h 02mAmerican Airlines
Deal found 9/30$394

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 octubre 2, 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

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

vie. 10/31

8:30 am-7:50 pm

1 stop11h 20m

Harlingen Valley Intl

lun. 11/3

7:30 am-2:25 pm

1 stop6h 55m

$246

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

sáb. 10/18

5:34 am-9:38 am

1 stop4h 04m

Harlingen Valley Intl

mar. 10/21

6:37 pm-10:50 pm

1 stop4h 13m

$289

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

vie. 10/17

5:30 am-1:45 pm

1 stop8h 15m

Harlingen Valley Intl

dom. 10/19

8:15 pm-12:05 am

1 stop3h 50m

$304

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

mar. 3/24

6:30 am-2:29 pm

1 stop7h 59m

Harlingen Valley Intl

mié. 3/25

3:00 pm-11:10 pm

1 stop8h 10m

$314

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

sáb. 10/18

5:20 am-12:55 pm

1 stop7h 35m

Harlingen Valley Intl

mar. 10/21

7:30 am-3:50 pm

2 stops8h 20m

$327

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

sáb. 10/18

7:30 am-4:13 pm

2 stops8h 43m

Harlingen Valley Intl

mar. 10/21

5:00 am-12:42 pm

2 stops7h 42m

$347

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

mié. 2/25

12:15 pm-6:28 pm

1 stop6h 13m

Harlingen Valley Intl

jue. 2/26

5:50 am-9:45 am

1 stop3h 55m

$363

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

jue. 3/19

5:10 am-10:15 am

1 stop5h 05m

Harlingen Valley Intl

lun. 3/23

5:30 pm-11:45 pm

1 stop6h 15m

$378

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

lun. 3/16

5:10 am-10:15 am

1 stop5h 05m

Harlingen Valley Intl

sáb. 3/21

5:05 am-11:45 am

1 stop6h 40m

$391

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

vie. 12/19

9:44 am-2:18 pm

1 stop4h 34m

Harlingen Valley Intl

mar. 12/23

8:11 pm-12:13 am

1 stop4h 02m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/2

Showing 1-10 of 13 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 $382). 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 octubre 2, 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.

  • How long is the flight from Missouri to Harlingen, Texas?

    Airlines like Southwest, American Airlines, and Delta fly from Missouri to Harlingen, Texas in about 4h 04m. The time it takes to get you to your destination can typically vary by up to 7h 16m. Airlines will cover a distance of 918 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $382). 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 octubre 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$330FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$213Average$370FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$248Average$351FlexibilityNo cancel feeOn-time69%
DeltaCheapest$353Average$421FlexibilityNo cancel feeOn-timeN/A

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