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Cheap flights from Denver to Harlingen from $98

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Harlingen departing on 10/31. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Denver to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
6:35 am - 11:30 amDEN  Denver Intl-HRL Harlingen Valley Intl
3h 55m1 stop Austin Bergstrom
Southwest Logo
12:40 pm - 6:45 pmHRL  Harlingen Valley Intl-DEN Denver Intl
7h 05m1 stop Houston Hobby
$196Southwest
Wed, Oct 14 - Sat, Oct 24
Southwest Logo
8:40 am - 3:50 pmDEN  Denver Intl-HRL Harlingen Valley Intl
6h 10m1 stop Houston Hobby
Southwest Logo
4:25 pm - 10:10 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 45m1 stop Houston Hobby
$196Southwest
Wed, Sep 9 - Wed, Sep 16
Southwest Logo
6:35 am - 11:30 amDEN  Denver Intl-HRL Harlingen Valley Intl
3h 55m1 stop Austin Bergstrom
Southwest Logo
7:10 am - 1:20 pmHRL  Harlingen Valley Intl-DEN Denver Intl
7h 10m1 stop Austin Bergstrom
$196Southwest
Wed, Oct 14 - Wed, Oct 28
Southwest Logo
6:35 am - 11:30 amDEN  Denver Intl-HRL Harlingen Valley Intl
3h 55m1 stop Austin Bergstrom
Southwest Logo
12:40 pm - 6:45 pmHRL  Harlingen Valley Intl-DEN Denver Intl
7h 05m1 stop Houston Hobby
$196Southwest
Wed, Oct 14 - Sat, Oct 24
American Airlines Logo
10:39 am - 6:12 pmDEN  Denver Intl-HRL Harlingen Valley Intl
6h 33m1 stop Dallas/Fort Worth
American Airlines Logo
2:46 pm - 6:58 pmHRL  Harlingen Valley Intl-DEN Denver Intl
5h 12m1 stop Dallas/Fort Worth
$235American Airlines
Wed, Oct 14 - Sat, Oct 24
United Airlines Logo
4:44 pm - 10:48 pmDEN  Denver Intl-HRL Harlingen Valley Intl
5h 04m1 stop Houston George Bush Intcntl
United Airlines Logo
5:05 am - 10:12 amHRL  Harlingen Valley Intl-DEN Denver Intl
6h 07m1 stop Houston George Bush Intcntl
$283United Airlines
Tue, Nov 17 - Sun, Nov 22
American Airlines Logo
12:39 pm - 6:13 pmDEN  Denver Intl-HRL Harlingen Valley Intl
4h 34m1 stop Dallas/Fort Worth
American Airlines Logo
8:03 pm - 11:53 pmHRL  Harlingen Valley Intl-DEN Denver Intl
4h 50m1 stop Dallas/Fort Worth
$294American Airlines
Fri, Aug 28 - Sun, Aug 30
United Airlines Logo
7:40 am - 3:59 pmDEN  Denver Intl-HRL Harlingen Valley Intl
7h 19m1 stop Houston George Bush Intcntl
United Airlines Logo
5:18 pm - 11:07 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 49m1 stop Houston George Bush Intcntl
$298United Airlines
Fri, Aug 28 - Sat, Sep 5
American Airlines Logo
7:20 am - 2:42 pmDEN  Denver Intl-HRL Harlingen Valley Intl
6h 22m1 stop Dallas/Fort Worth
American Airlines Logo
6:43 pm - 10:15 pmHRL  Harlingen Valley Intl-DEN Denver Intl
4h 32m1 stop Dallas/Fort Worth
$298American Airlines
Fri, Aug 28 - Sat, Sep 5
United Airlines Logo
7:40 am - 3:59 pmDEN  Denver Intl-HRL Harlingen Valley Intl
7h 19m1 stop Houston George Bush Intcntl
United Airlines Logo
5:18 pm - 11:07 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 49m1 stop Houston George Bush Intcntl
$320United Airlines
Sun, Aug 30 - Sat, Sep 5

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Southwest flights from Denver to Harlingen

Our best Southwest deals on Denver to Harlingen flight tickets
Southwest
Oct 14
DEN6:35 amDenver Intl
3h 55m
1 stop
HRL11:30 amHarlingen Valley Intl
Oct 28
HRL7:10 amHarlingen Valley Intl
7h 10m
1 stop
DEN1:20 pmDenver Intl
$196
Southwest
Oct 14
DEN6:35 amDenver Intl
3h 55m
1 stop
HRL11:30 amHarlingen Valley Intl
Oct 24
HRL6:25 amHarlingen Valley Intl
6h 00m
2 stops
DEN11:25 amDenver Intl
$201
Southwest
Sep 9
DEN2:20 pmDenver Intl
6h 30m
2 stops
HRL9:50 pmHarlingen Valley Intl
Sep 16
HRL1:45 pmHarlingen Valley Intl
4h 30m
1 stop
DEN5:15 pmDenver Intl
$202

American Airlines flights from Denver to Harlingen

Our best American Airlines deals on Denver to Harlingen flight tickets
American Airlines
Oct 14
DEN10:39 amDenver Intl
6h 33m
1 stop
HRL6:12 pmHarlingen Valley Intl
Oct 24
HRL2:46 pmHarlingen Valley Intl
5h 12m
1 stop
DEN6:58 pmDenver Intl
$235
American Airlines
Aug 28
DEN12:39 pmDenver Intl
4h 34m
1 stop
HRL6:13 pmHarlingen Valley Intl
Aug 30
HRL8:03 pmHarlingen Valley Intl
4h 50m
1 stop
DEN11:53 pmDenver Intl
$294
American Airlines
Sep 9
DEN7:26 amDenver Intl
6h 39m
1 stop
HRL3:05 pmHarlingen Valley Intl
Sep 10
HRL8:00 pmHarlingen Valley Intl
4h 51m
1 stop
DEN11:51 pmDenver Intl
$311

momondo Fare Finder

 
Customize your flight search to find flights from Denver 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, momondo users made 832,500 searches. Data last updated August 13, 2026.
Use the filters below to find and compare flights from Denver to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Wed 10/14

6:35 am-11:30 am

1 stop3h 55m

Harlingen Valley Intl

Sat 10/24

12:40 pm-6:45 pm

1 stop7h 05m

$196

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Wed 9/9

8:40 am-3:50 pm

1 stop6h 10m

Harlingen Valley Intl

Wed 9/16

4:25 pm-10:10 pm

1 stop6h 45m

$196

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Wed 10/14

6:35 am-11:30 am

1 stop3h 55m

Harlingen Valley Intl

Wed 10/28

7:10 am-1:20 pm

1 stop7h 10m

$196

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Wed 10/14

6:35 am-11:30 am

1 stop3h 55m

Harlingen Valley Intl

Sat 10/24

12:40 pm-6:45 pm

1 stop7h 05m

$196

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Wed 10/14

10:39 am-6:12 pm

1 stop6h 33m

Harlingen Valley Intl

Sat 10/24

2:46 pm-6:58 pm

1 stop5h 12m

$235

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Tue 11/17

4:44 pm-10:48 pm

1 stop5h 04m

Harlingen Valley Intl

Sun 11/22

5:05 am-10:12 am

1 stop6h 07m

$283
Quickest round-trip

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Fri 8/28

12:39 pm-6:13 pm

1 stop4h 34m

Harlingen Valley Intl

Sun 8/30

8:03 pm-11:53 pm

1 stop4h 50m

$294

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Fri 8/28

7:40 am-3:59 pm

1 stop7h 19m

Harlingen Valley Intl

Sat 9/5

5:18 pm-11:07 pm

1 stop6h 49m

$298

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Fri 8/28

7:20 am-2:42 pm

1 stop6h 22m

Harlingen Valley Intl

Sat 9/5

6:43 pm-10:15 pm

1 stop4h 32m

$298

DenverHarlingen

DEN Denver Intl - HRL Harlingen Valley Intl

DENHRL

Denver Intl

Sun 8/30

7:40 am-3:59 pm

1 stop7h 19m

Harlingen Valley Intl

Sat 9/5

5:18 pm-11:07 pm

1 stop6h 49m

$320

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 18 resultsSorted by cheapest first
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See travel insights to Harlingen from

How to get the cheapest flight ticket from Denver to Harlingen

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 month to fly to Harlingen?

If you aren’t able to travel during the month of February, then book flights to Harlingen from Denver during October instead. Flights to Harlingen in October, while not as cheap as those in February, still average around $266.

What is the cheapest Denver Intl to Harlingen Valley Intl flight route?

Fly from Denver Intl to Harlingen Valley Intl for the best Denver Intl - Harlingen Valley Intl flight prices

What cabin class options are available on Denver to Harlingen flights?

There is only 1 cabin class available to choose from on Denver to Harlingen flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Denver to Harlingen flight prices changed over time?

When to book flights from Denver to Harlingen

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Harlingen according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Harlingen (DEN to HRL) flight deals and tips

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

Best Price Found

$476

Fastest flight time

3h 55m

Direct flights

None
The best flight deal from Denver to Harlingen found on momondo in the last 72 hours is $476
The fastest flight from Denver to Harlingen takes 3h 55m
There are no direct flights from Denver to Harlingen. There are no popular flight routes from Denver to Harlingen.
Search flight deals

Frequently asked questions about flying from Denver to Harlingen

  • How far is Denver Intl to Harlingen Valley Intl by plane?

    Denver Intl and Harlingen Valley Intl are 1025.4 mi apart from one another. A reasonable flight in good conditions will take 3h 55m.

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

    Prices for flights from Denver Intl Airport to Harlingen Valley Intl Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport 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.

  • What is the most popular plane model from Denver to Harlingen?

  • What is the most popular airline from Denver to Harlingen?

Best airlines flying from Denver to Harlingen

Compare and see reviews for airlines that fly from Denver to Harlingen with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $202Free CancellationRating
8.0
4,218 reviews
Search Southwest flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
10,114 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Denver to Harlingen flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Harlingen that suits you.

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

Yes. All flights to Harlingen from Denver on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Denver and Harlingen by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Denver to Harlingen flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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