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Cheap flights from Missouri to Harlingen from $171

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 9/29. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Missouri to Harlingen

Cheap round-trip flights

Southwest Logo
5:55 pm - 10:15 pmMCI-HRL
4h 20m1 stop
Southwest Logo
6:10 pm - 10:00 pmHRL-MCI
3h 50m1 stop
$171Southwest
Find Deal
Mon, Sep 29 - Tue, Oct 7
American Airlines Logo
5:18 am - 9:41 amSTL-HRL
4h 23m1 stop
American Airlines Logo
5:45 am - 11:52 amHRL-STL
6h 07m1 stop
$175American Airlines
Find Deal
Thu, Sep 25 - Tue, Sep 30
Southwest Logo
5:55 pm - 10:15 pmMCI-HRL
4h 20m1 stop
Southwest Logo
7:30 am - 3:50 pmHRL-MCI
8h 20m2 stops
$181Southwest
Find Deal
Mon, Sep 29 - Tue, Oct 7
Southwest Logo
12:35 pm - 6:05 pmSTL-HRL
5h 30m1 stop
Southwest Logo
2:10 pm - 9:25 pmHRL-STL
7h 15m2 stops
$205Southwest
Find Deal
Thu, Sep 25 - Tue, Sep 30
Southwest Logo
12:35 pm - 6:05 pmSTL-HRL
5h 30m1 stop
Southwest Logo
1:40 pm - 7:55 pmHRL-STL
6h 15m1 stop
$217Southwest
Find Deal
Fri, Sep 12 - Fri, Sep 19
Southwest Logo
2:40 pm - 9:25 pmMCI-HRL
6h 45m1 stop
Southwest Logo
5:45 am - 9:50 amHRL-MCI
4h 05m1 stop
$232Southwest
Find Deal
Wed, Aug 20 - Mon, Aug 25
Southwest Logo
12:35 pm - 6:05 pmSTL-HRL
5h 30m1 stop
Southwest Logo
5:45 am - 1:35 pmHRL-STL
7h 50m2 stops
$243Southwest
Find Deal
Fri, Sep 12 - Fri, Sep 19
American Airlines Logo
5:45 am - 9:32 amMCI-HRL
3h 47m1 stop
American Airlines Logo
5:30 am - 9:49 amHRL-MCI
4h 19m1 stop
$289American Airlines
Find Deal
Mon, Aug 18 - Fri, Aug 22
United Airlines Logo
3:00 pm - 7:36 pmMCI-HRL
4h 36m1 stop
United Airlines Logo
5:00 am - 10:36 amHRL-MCI
5h 36m1 stop
$321United Airlines
Find Deal
Wed, Dec 24 - Sun, Dec 28
United Airlines Logo
7:45 am - 7:36 pmMCI-HRL
11h 51m2 stops
United Airlines Logo
5:00 am - 10:36 amHRL-MCI
5h 36m1 stop
$338United Airlines
Find Deal
Wed, Dec 24 - Sun, Dec 28

United Airlines flights from Missouri to Harlingen, Texas

Our best United Airlines deals on Missouri to Harlingen, Texas flight tickets
United Airlines
Dec 24
MCI3:00 pmKansas City
4h 36m
1 stop
HRL7:36 pmHarlingen Valley Intl
Dec 28
HRL5:00 amHarlingen Valley Intl
5h 36m
1 stop
MCI10:36 amKansas City
$321
Find similar
United Airlines
Dec 24
MCI7:45 amKansas City
11h 51m
2 stops
HRL7:36 pmHarlingen Valley Intl
Dec 28
HRL5:00 amHarlingen Valley Intl
5h 36m
1 stop
MCI10:36 amKansas City
$338
Find similar
United Airlines
Dec 24
MCI7:45 amKansas City
11h 51m
2 stops
HRL7:36 pmHarlingen Valley Intl
Jan 2
HRL5:20 pmHarlingen Valley Intl
5h 10m
1 stop
MCI10:30 pmKansas City
$360
Find similar

Southwest flights from Missouri to Harlingen, Texas

Our best Southwest deals on Missouri to Harlingen, Texas flight tickets
Southwest
Sep 29
MCI5:55 pmKansas City
4h 20m
1 stop
HRL10:15 pmHarlingen Valley Intl
Oct 7
HRL6:10 pmHarlingen Valley Intl
3h 50m
1 stop
MCI10:00 pmKansas City
$171
Find similar
Southwest
Sep 29
MCI5:55 pmKansas City
4h 20m
1 stop
HRL10:15 pmHarlingen Valley Intl
Oct 7
HRL7:30 amHarlingen Valley Intl
8h 20m
2 stops
MCI3:50 pmKansas City
$181
Find similar
Southwest
Sep 25
STL12:35 pmLambert-St Louis
5h 30m
1 stop
HRL6:05 pmHarlingen Valley Intl
Sep 30
HRL2:10 pmHarlingen Valley Intl
7h 15m
2 stops
STL9:25 pmLambert-St Louis
$205
Find similar

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 August 5, 2025.
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

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Mon 9/29

5:55 pm-10:15 pm

1 stop4h 20m

Harlingen Valley Intl

Tue 10/7

6:10 pm-10:00 pm

1 stop3h 50m

$171

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 9/25

5:18 am-9:41 am

1 stop4h 23m

Harlingen Valley Intl

Tue 9/30

5:45 am-11:52 am

1 stop6h 07m

$175

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Mon 9/29

5:55 pm-10:15 pm

1 stop4h 20m

Harlingen Valley Intl

Tue 10/7

7:30 am-3:50 pm

2 stops8h 20m

$181

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Thu 9/25

12:35 pm-6:05 pm

1 stop5h 30m

Harlingen Valley Intl

Tue 9/30

2:10 pm-9:25 pm

2 stops7h 15m

$205

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 9/12

12:35 pm-6:05 pm

1 stop5h 30m

Harlingen Valley Intl

Fri 9/19

1:40 pm-7:55 pm

1 stop6h 15m

$217

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 8/20

2:40 pm-9:25 pm

1 stop6h 45m

Harlingen Valley Intl

Mon 8/25

5:45 am-9:50 am

1 stop4h 05m

$232

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Fri 9/12

12:35 pm-6:05 pm

1 stop5h 30m

Harlingen Valley Intl

Fri 9/19

5:45 am-1:35 pm

2 stops7h 50m

$243

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Mon 8/18

5:45 am-9:32 am

1 stop3h 47m

Harlingen Valley Intl

Fri 8/22

5:30 am-9:49 am

1 stop4h 19m

$289

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 12/24

3:00 pm-7:36 pm

1 stop4h 36m

Harlingen Valley Intl

Sun 12/28

5:00 am-10:36 am

1 stop5h 36m

$321

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 12/24

7:45 am-7:36 pm

2 stops11h 51m

Harlingen Valley Intl

Sun 12/28

5:00 am-10:36 am

1 stop5h 36m

$338

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 14 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

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart on your flight to Harlingen, Texas is on a Monday when prices can be found for as low as $290. This is often the case because there is less demand to fly during this day of the week. When flying out on a Friday, the most expensive travel day of the week, you can expect to see flight prices from Missouri to Harlingen, Texas for around $421.

What is the cheapest time of day to depart on your flight to Harlingen, Texas?

Our most recent data shows that the best time of day to fly to Harlingen, Texas is in the afternoon. Flights from Missouri to Harlingen, Texas during this time can be as low as $377. Flights in the morning are often more expensive with an average ticket price of $397.

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

Best Price Found

$185

Fastest flight time

3h 35m

Direct flights

None

Airports in Harlingen, Texas

1 airport
The best one-way flight to Harlingen, Texas from Missouri in the past 72 hours is $185. The best round-trip flight deal from Missouri to Harlingen, Texas found on momondo in the last 72 hours is $171.
The fastest flight from Missouri to Harlingen, Texas takes 3h 35m
There are no direct flights from Missouri to Harlingen, Texas. Popular non-direct routes for this connection are Lambert-St Louis Airport - Harlingen Valley Intl Airport and Kansas City Airport - Harlingen Valley Intl Airport.
There is 1 airport near Harlingen, Texas: Harlingen Valley Intl (HRL)
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
4,246 reviews
Search Southwest flights
United AirlinesPriceFrom $208Free CancellationRating
7.4
8,916 reviews
Search United Airlines flights
American AirlinesPriceFrom $208Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
DeltaPriceFrom $353Free CancellationRating
8.0
7,985 reviews
Search Delta 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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