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Cheap flights from Missouri to Harlingen from $189

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Harlingen departing on 4/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Missouri to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:20 pm - 9:35 pm
STL
-
HRL
4h 15m
1 stop
Southwest Logo
4:40 pm - 10:20 pm
HRL
-
STL
5h 40m
1 stop
$189Southwest
Sat, Apr 25 - Tue, Apr 28
Southwest Logo
5:20 pm - 9:35 pm
STL
-
HRL
4h 15m
1 stop
Southwest Logo
7:10 am - 2:50 pm
HRL
-
STL
7h 40m
2 stops
$194Southwest
Sat, Apr 25 - Tue, Apr 28
American Airlines Logo
5:30 am - 10:16 am
MCI
-
HRL
4h 46m
1 stop
American Airlines Logo
4:58 pm - 11:01 pm
HRL
-
MCI
6h 03m
1 stop
$237American Airlines
Wed, Aug 12 - Wed, Aug 19
United Airlines Logo
2:52 pm - 7:29 pm
MCI
-
HRL
4h 37m
1 stop
United Airlines Logo
5:15 am - 4:19 pm
HRL
-
MCI
11h 04m
2 stops
$242United Airlines
Wed, Aug 12 - Wed, Aug 19
American Airlines Logo
7:52 pm - 12:14 am
MCI
-
HRL
4h 22m
1 stop
American Airlines Logo
6:00 am - 10:42 am
HRL
-
MCI
4h 42m
1 stop
$244American Airlines
Tue, Aug 4 - Sat, Aug 8
United Airlines Logo
1:45 pm - 9:44 pm
MCI
-
HRL
7h 59m
2 stops
United Airlines Logo
5:15 am - 12:39 pm
HRL
-
MCI
7h 24m
2 stops
$247United Airlines
Wed, Aug 12 - Wed, Aug 19
Southwest Logo
8:30 am - 1:30 pm
STL
-
HRL
5h 00m
1 stop
Southwest Logo
5:10 pm - 11:30 pm
HRL
-
STL
6h 20m
1 stop
$261Southwest
Tue, Jun 9 - Sat, Jun 13
Southwest Logo
5:40 am - 11:45 am
STL
-
HRL
6h 05m
1 stop
Southwest Logo
6:35 pm - 12:15 am
HRL
-
STL
5h 40m
1 stop
$265Southwest
Fri, Apr 17 - Sun, Apr 19
American Airlines Logo
5:20 am - 10:17 am
STL
-
HRL
4h 57m
1 stop
American Airlines Logo
6:45 pm - 10:59 pm
HRL
-
STL
4h 14m
1 stop
$277American Airlines
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
6:00 am - 11:23 am
STL
-
HRL
5h 23m
1 stop
United Airlines Logo
5:18 pm - 10:28 pm
HRL
-
STL
5h 10m
1 stop
$287United Airlines
Thu, Apr 9 - Mon, Apr 13

American Airlines flights from Missouri to Harlingen, Texas

Our best American Airlines deals on Missouri to Harlingen, Texas flight tickets
American Airlines
Aug 12
MCI5:30 amKansas City
4h 46m
1 stop
HRL10:16 amHarlingen Valley Intl
Aug 19
HRL4:58 pmHarlingen Valley Intl
6h 03m
1 stop
MCI11:01 pmKansas City
$237
American Airlines
Aug 4
MCI7:52 pmKansas City
4h 22m
1 stop
HRL12:14 amHarlingen Valley Intl
Aug 8
HRL6:00 amHarlingen Valley Intl
4h 42m
1 stop
MCI10:42 amKansas City
$244
American Airlines
Apr 10
STL5:20 amLambert-St Louis
4h 57m
1 stop
HRL10:17 amHarlingen Valley Intl
Apr 14
HRL6:45 pmHarlingen Valley Intl
4h 14m
1 stop
STL10:59 pmLambert-St Louis
$277

Southwest flights from Missouri to Harlingen, Texas

Our best Southwest deals on Missouri to Harlingen, Texas flight tickets
Southwest
Apr 25
STL5:20 pmLambert-St Louis
4h 15m
1 stop
HRL9:35 pmHarlingen Valley Intl
Apr 28
HRL4:40 pmHarlingen Valley Intl
5h 40m
1 stop
STL10:20 pmLambert-St Louis
$189
Southwest
Apr 25
STL5:20 pmLambert-St Louis
4h 15m
1 stop
HRL9:35 pmHarlingen Valley Intl
Apr 28
HRL7:10 amHarlingen Valley Intl
7h 40m
2 stops
STL2:50 pmLambert-St Louis
$194
Southwest
Jun 9
STL8:30 amLambert-St Louis
5h 00m
1 stop
HRL1:30 pmHarlingen Valley Intl
Jun 13
HRL5:10 pmHarlingen Valley Intl
6h 20m
1 stop
STL11:30 pmLambert-St Louis
$261

momondo Fare Finder

 
Customize your flight search to find flights from Missouri to Harlingen, Texas 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, momondo users made 832,500 searches. Data last updated March 28, 2026.
Use the filters below to find and compare flights from Missouri to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sat 4/25

5:20 pm-9:35 pm

1 stop4h 15m

Harlingen Valley Intl

Tue 4/28

4:40 pm-10:20 pm

1 stop5h 40m

$189

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Sat 4/25

5:20 pm-9:35 pm

1 stop4h 15m

Harlingen Valley Intl

Tue 4/28

7:10 am-2:50 pm

2 stops7h 40m

$194

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 8/12

5:30 am-10:16 am

1 stop4h 46m

Harlingen Valley Intl

Wed 8/19

4:58 pm-11:01 pm

1 stop6h 03m

$237

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 8/12

2:52 pm-7:29 pm

1 stop4h 37m

Harlingen Valley Intl

Wed 8/19

5:15 am-4:19 pm

2 stops11h 04m

$242
Quickest round-trip

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Tue 8/4

7:52 pm-12:14 am

1 stop4h 22m

Harlingen Valley Intl

Sat 8/8

6:00 am-10:42 am

1 stop4h 42m

$244

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 8/12

1:45 pm-9:44 pm

2 stops7h 59m

Harlingen Valley Intl

Wed 8/19

5:15 am-12:39 pm

2 stops7h 24m

$247

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 6/9

8:30 am-1:30 pm

1 stop5h 00m

Harlingen Valley Intl

Sat 6/13

5:10 pm-11:30 pm

1 stop6h 20m

$261

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 4/17

5:40 am-11:45 am

1 stop6h 05m

Harlingen Valley Intl

Sun 4/19

6:35 pm-12:15 am

1 stop5h 40m

$265

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 4/10

5:20 am-10:17 am

1 stop4h 57m

Harlingen Valley Intl

Tue 4/14

6:45 pm-10:59 pm

1 stop4h 14m

$277

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 4/9

6:00 am-11:23 am

1 stop5h 23m

Harlingen Valley Intl

Mon 4/13

5:18 pm-10:28 pm

1 stop5h 10m

$287

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 resultsSorted by cheapest first
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See travel insights to Harlingen from

How to get the cheapest flight ticket from Missouri to Harlingen, Texas

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Can stopping save me money on Missouri to Harlingen, Texas flights?

You could potentially save up to 28% on your flight if you consider stops on a Missouri to Harlingen, Texas flight.

Cheap Missouri to Harlingen, Texas flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Missouri to Harlingen, Texas

Fastest flight time

3h 50m

Direct flights

None
The fastest flight from Missouri to Harlingen, Texas takes 3h 50m
There are no direct flights from Missouri to Harlingen, Texas. There are no popular flight routes from Missouri to Harlingen, Texas.
Search flight deals

  • When did momondo last update prices for flights from Missouri to Harlingen Valley Intl Airport?

    Prices for flights from Missouri to Harlingen Valley Intl Airport were last updated today.

  • How many operators does momondo search for flights from Missouri to Harlingen Valley Intl Airport?

  • How old do you have to be to fly from Missouri to Harlingen Valley Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Missouri to Harlingen Valley Intl Airport.

  • What documentation or ID do you need to fly to Harlingen Valley Intl Airport?

    The travel and health documents you'll need for your trip to Harlingen Valley Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harlingen Valley Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Missouri to Harlingen, Texas

Compare and see reviews for airlines that fly from Missouri to Harlingen, Texas with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $196Free CancellationRating
8.0
4,333 reviews
Search Southwest flights
American AirlinesPriceFrom $212Free CancellationRating
7.1
11,520 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
9,499 reviews
Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Missouri to Harlingen?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Missouri to Harlingen. momondo saves you time and could save you money on your trip.

Can I find flights from Missouri to Harlingen with flexible booking policies on momondo?

Flights from Missouri to Harlingen with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Missouri to Harlingen?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Harlingen from Missouri.

I’m not ready to book a flight from Missouri to Harlingen right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Harlingen from Missouri. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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