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Cheap flights from Missouri to Harlingen from $166

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Missouri to Harlingen departing on 9/30. 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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0 bags

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Find the cheapest flights from Missouri to Harlingen

Cheap round-trip flights

Southwest Logo
5:20 am - 10:10 amMCI-HRL
4h 50m1 stop
Southwest Logo
6:10 pm - 10:00 pmHRL-MCI
3h 50m1 stop
$192Southwest
Find Deal
Thu, Oct 16 - Wed, Oct 22
Southwest Logo
5:20 am - 10:10 amMCI-HRL
4h 50m1 stop
Southwest Logo
7:30 am - 3:50 pmHRL-MCI
8h 20m2 stops
$260Southwest
Find Deal
Thu, Oct 16 - Wed, Oct 22
United Airlines Logo
9:10 am - 7:41 pmMCI-HRL
10h 31m2 stops
United Airlines Logo
5:00 am - 11:53 amHRL-MCI
6h 53m1 stop
$278United Airlines
Find Deal
Tue, Oct 7 - Tue, Oct 14
Southwest Logo
6:00 am - 11:10 amMCI-HRL
5h 10m1 stop
Southwest Logo
7:10 pm - 11:10 pmHRL-MCI
4h 00m1 stop
$284Southwest
Find Deal
Tue, Oct 7 - Tue, Oct 14
United Airlines Logo
4:25 pm - 9:59 pmMCI-HRL
5h 34m1 stop
United Airlines Logo
5:25 pm - 10:40 pmHRL-MCI
5h 15m1 stop
$317United Airlines
Find Deal
Fri, Jan 16 - Mon, Jan 19
Southwest Logo
3:55 pm - 10:15 pmMCI-HRL
6h 20m1 stop
Southwest Logo
6:35 am - 10:30 amHRL-MCI
3h 55m1 stop
$322Southwest
Find Deal
Fri, Jan 16 - Mon, Jan 19
Southwest Logo
3:55 pm - 9:35 pmMCI-HRL
5h 40m2 stops
Southwest Logo
6:35 am - 10:30 amHRL-MCI
3h 55m1 stop
$327Southwest
Find Deal
Fri, Jan 16 - Mon, Jan 19
American Airlines Logo
9:44 am - 2:18 pmMCI-HRL
4h 34m1 stop
American Airlines Logo
5:34 am - 10:24 amHRL-MCI
4h 50m1 stop
$344American Airlines
Find Deal
Wed, Dec 24 - Thu, Jan 1
American Airlines Logo
5:39 am - 11:39 amMCI-HRL
6h 00m1 stop
American Airlines Logo
5:50 am - 9:45 amHRL-MCI
3h 55m1 stop
$353American Airlines
Find Deal
Wed, Feb 25 - Thu, Feb 26
Delta Logo
6:04 am - 2:19 pmSTL-HRL
8h 15m1 stop
Delta Logo
3:14 pm - 10:08 pmHRL-STL
6h 54m1 stop
$578Delta
Find Deal
Tue, Dec 23 - 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
Oct 7
MCI9:10 amKansas City
10h 31m
2 stops
HRL7:41 pmHarlingen Valley Intl
Oct 14
HRL5:00 amHarlingen Valley Intl
6h 53m
1 stop
MCI11:53 amKansas City
$278
Find similar
United Airlines
Jan 16
MCI4:25 pmKansas City
5h 34m
1 stop
HRL9:59 pmHarlingen Valley Intl
Jan 19
HRL5:25 pmHarlingen Valley Intl
5h 15m
1 stop
MCI10:40 pmKansas City
$317
Find similar
United Airlines
Oct 7
MCI6:00 amKansas City
10h 13m
2 stops
HRL4:13 pmHarlingen Valley Intl
Oct 14
HRL5:00 amHarlingen Valley Intl
9h 20m
2 stops
MCI2:20 pmKansas City
$343
Find similar

American Airlines flights from Missouri to Harlingen, Texas

Our best American Airlines deals on Missouri to Harlingen, Texas flight tickets
American Airlines
Sep 29
STL5:18 amLambert-St Louis
4h 23m
1 stop
HRL9:41 amHarlingen Valley Intl
Oct 10
HRL6:20 pmHarlingen Valley Intl
5h 29m
1 stop
STL11:49 pmLambert-St Louis
$329
Find similar
American Airlines
Sep 29
STL5:18 amLambert-St Louis
4h 23m
1 stop
HRL9:41 amHarlingen Valley Intl
Oct 8
HRL5:25 amHarlingen Valley Intl
8h 19m
2 stops
STL1:44 pmLambert-St Louis
$334
Find similar
American Airlines
Dec 24
MCI9:44 amKansas City
4h 34m
1 stop
HRL2:18 pmHarlingen Valley Intl
Jan 1
HRL5:34 amHarlingen Valley Intl
4h 50m
1 stop
MCI10:24 amKansas City
$344
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 September 21, 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

Thu 10/16

5:20 am-10:10 am

1 stop4h 50m

Harlingen Valley Intl

Wed 10/22

6:10 pm-10:00 pm

1 stop3h 50m

$192

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Thu 10/16

5:20 am-10:10 am

1 stop4h 50m

Harlingen Valley Intl

Wed 10/22

7:30 am-3:50 pm

2 stops8h 20m

$260

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Tue 10/7

9:10 am-7:41 pm

2 stops10h 31m

Harlingen Valley Intl

Tue 10/14

5:00 am-11:53 am

1 stop6h 53m

$278

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Tue 10/7

6:00 am-11:10 am

1 stop5h 10m

Harlingen Valley Intl

Tue 10/14

7:10 pm-11:10 pm

1 stop4h 00m

$284

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Fri 1/16

4:25 pm-9:59 pm

1 stop5h 34m

Harlingen Valley Intl

Mon 1/19

5:25 pm-10:40 pm

1 stop5h 15m

$317

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Fri 1/16

3:55 pm-10:15 pm

1 stop6h 20m

Harlingen Valley Intl

Mon 1/19

6:35 am-10:30 am

1 stop3h 55m

$322

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Fri 1/16

3:55 pm-9:35 pm

2 stops5h 40m

Harlingen Valley Intl

Mon 1/19

6:35 am-10:30 am

1 stop3h 55m

$327

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 12/24

9:44 am-2:18 pm

1 stop4h 34m

Harlingen Valley Intl

Thu 1/1

5:34 am-10:24 am

1 stop4h 50m

$344

Kansas CityHarlingen

MCI - HRL

MCIHRL

Kansas City

Wed 2/25

5:39 am-11:39 am

1 stop6h 00m

Harlingen Valley Intl

Thu 2/26

5:50 am-9:45 am

1 stop3h 55m

$353

St. LouisHarlingen

STL - HRL

STLHRL

Lambert-St Louis

Tue 12/23

6:04 am-2:19 pm

1 stop8h 15m

Harlingen Valley Intl

Sun 12/28

3:14 pm-10:08 pm

1 stop6h 54m

$578

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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

Direct flights

None
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
4,245 reviews
Search Southwest flights
American AirlinesPriceFrom $213Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $248Free CancellationRating
7.4
8,923 reviews
Search United Airlines flights
DeltaPriceFrom $353Free CancellationRating
7.9
7,966 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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