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Cheap flights from Harlingen to Denver from $117

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to Denver departing on 12/17. 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 Harlingen to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
5:30 pm - 10:35 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 05m1 stop Austin Bergstrom
Southwest Logo
1:10 pm - 8:40 pmDEN  Denver Intl-HRL Harlingen Valley Intl
6h 30m1 stop Austin Bergstrom
$190Southwest
Fri, Oct 30 - Tue, Nov 3
Southwest Logo
5:30 am - 9:20 amHRL  Harlingen Valley Intl-DEN Denver Intl
4h 50m1 stop Houston Hobby
Southwest Logo
1:35 pm - 8:40 pmDEN  Denver Intl-HRL Harlingen Valley Intl
6h 05m2 stops Dallas Love Field Austin Bergstrom
$195Southwest
Fri, Oct 30 - Tue, Nov 3
Southwest Logo
4:25 pm - 10:05 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 40m1 stop Houston Hobby
Southwest Logo
7:10 am - 12:20 pmDEN  Denver Intl-HRL Harlingen Valley Intl
4h 10m1 stop Houston Hobby
$217Southwest
Wed, Sep 2 - Sun, Sep 6
Southwest Logo
1:45 pm - 7:50 pmHRL  Harlingen Valley Intl-DEN Denver Intl
7h 05m2 stops Austin Bergstrom Houston Hobby
Southwest Logo
7:10 am - 12:20 pmDEN  Denver Intl-HRL Harlingen Valley Intl
4h 10m1 stop Houston Hobby
$223Southwest
Wed, Sep 2 - Sun, Sep 6
American Airlines Logo
6:42 pm - 11:58 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 16m1 stop Dallas/Fort Worth
American Airlines Logo
6:26 am - 2:16 pmDEN  Denver Intl-HRL Harlingen Valley Intl
6h 50m1 stop Dallas/Fort Worth
$317American Airlines
Wed, Oct 7 - Sun, Oct 11
United Airlines Logo
5:05 am - 8:55 amHRL  Harlingen Valley Intl-DEN Denver Intl
4h 50m1 stop Houston George Bush Intcntl
United Airlines Logo
4:20 pm - 9:52 pmDEN  Denver Intl-HRL Harlingen Valley Intl
4h 32m1 stop Houston George Bush Intcntl
$323United Airlines
Tue, Oct 20 - Wed, Oct 21
United Airlines Logo
2:00 pm - 8:08 pmHRL  Harlingen Valley Intl-DEN Denver Intl
7h 08m1 stop Houston George Bush Intcntl
United Airlines Logo
4:20 pm - 9:52 pmDEN  Denver Intl-HRL Harlingen Valley Intl
4h 32m1 stop Houston George Bush Intcntl
$327United Airlines
Tue, Oct 20 - Wed, Oct 21
United Airlines Logo
7:15 am - 2:14 pmHRL  Harlingen Valley Intl-DEN Denver Intl
7h 59m1 stop Houston George Bush Intcntl
United Airlines Logo
3:35 pm - 9:52 pmDEN  Denver Intl-HRL Harlingen Valley Intl
5h 17m1 stop Houston George Bush Intcntl
$327United Airlines
Tue, Oct 20 - Wed, Oct 21
American Airlines Logo
6:42 pm - 11:58 pmHRL  Harlingen Valley Intl-DEN Denver Intl
6h 16m1 stop Dallas/Fort Worth
American Airlines Logo
7:28 am - 2:16 pmDEN  Denver Intl-HRL Harlingen Valley Intl
5h 48m1 stop Dallas/Fort Worth
$329American Airlines
Fri, Oct 23 - Mon, Oct 26
United Airlines Logo
5:18 pm - 10:15 pmHRL  Harlingen Valley Intl-DEN Denver Intl
5h 57m1 stop Houston George Bush Intcntl
United Airlines Logo
3:35 pm - 9:52 pmDEN  Denver Intl-HRL Harlingen Valley Intl
5h 17m1 stop Houston George Bush Intcntl
$351United Airlines
Mon, Sep 7 - Fri, Sep 11

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Southwest flights from Harlingen to Denver

Our best Southwest deals on Harlingen to Denver flight tickets
Southwest
Oct 30
HRL5:30 pmHarlingen Valley Intl
6h 05m
1 stop
DEN10:35 pmDenver Intl
Nov 3
DEN1:10 pmDenver Intl
6h 30m
1 stop
HRL8:40 pmHarlingen Valley Intl
$190
Southwest
Oct 30
HRL5:30 amHarlingen Valley Intl
4h 50m
1 stop
DEN9:20 amDenver Intl
Nov 3
DEN1:35 pmDenver Intl
6h 05m
2 stops
HRL8:40 pmHarlingen Valley Intl
$195
Southwest
Sep 2
HRL4:25 pmHarlingen Valley Intl
6h 40m
1 stop
DEN10:05 pmDenver Intl
Sep 6
DEN7:10 amDenver Intl
4h 10m
1 stop
HRL12:20 pmHarlingen Valley Intl
$217

United Airlines flights from Harlingen to Denver

Our best United Airlines deals on Harlingen to Denver flight tickets
United Airlines
Oct 20
HRL5:05 amHarlingen Valley Intl
4h 50m
1 stop
DEN8:55 amDenver Intl
Oct 21
DEN4:20 pmDenver Intl
4h 32m
1 stop
HRL9:52 pmHarlingen Valley Intl
$323
United Airlines
Oct 20
HRL2:00 pmHarlingen Valley Intl
7h 08m
1 stop
DEN8:08 pmDenver Intl
Oct 21
DEN4:20 pmDenver Intl
4h 32m
1 stop
HRL9:52 pmHarlingen Valley Intl
$327
United Airlines
Sep 7
HRL5:18 pmHarlingen Valley Intl
5h 57m
1 stop
DEN10:15 pmDenver Intl
Sep 11
DEN3:35 pmDenver Intl
5h 17m
1 stop
HRL9:52 pmHarlingen Valley Intl
$351

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen to Denver 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 12, 2026.
Use the filters below to find and compare flights from Harlingen to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Fri 10/30

5:30 pm-10:35 pm

1 stop6h 05m

Denver Intl

Tue 11/3

1:10 pm-8:40 pm

1 stop6h 30m

$190

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Fri 10/30

5:30 am-9:20 am

1 stop4h 50m

Denver Intl

Tue 11/3

1:35 pm-8:40 pm

2 stops6h 05m

$195

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Wed 9/2

4:25 pm-10:05 pm

1 stop6h 40m

Denver Intl

Sun 9/6

7:10 am-12:20 pm

1 stop4h 10m

$217

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Wed 9/2

1:45 pm-7:50 pm

2 stops7h 05m

Denver Intl

Sun 9/6

7:10 am-12:20 pm

1 stop4h 10m

$223

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Wed 10/7

6:42 pm-11:58 pm

1 stop6h 16m

Denver Intl

Sun 10/11

6:26 am-2:16 pm

1 stop6h 50m

$317
Quickest round-trip

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Tue 10/20

5:05 am-8:55 am

1 stop4h 50m

Denver Intl

Wed 10/21

4:20 pm-9:52 pm

1 stop4h 32m

$323

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Tue 10/20

2:00 pm-8:08 pm

1 stop7h 08m

Denver Intl

Wed 10/21

4:20 pm-9:52 pm

1 stop4h 32m

$327

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Tue 10/20

7:15 am-2:14 pm

1 stop7h 59m

Denver Intl

Wed 10/21

3:35 pm-9:52 pm

1 stop5h 17m

$327

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Fri 10/23

6:42 pm-11:58 pm

1 stop6h 16m

Denver Intl

Mon 10/26

7:28 am-2:16 pm

1 stop5h 48m

$329

HarlingenDenver

HRL Harlingen Valley Intl - DEN Denver Intl

HRLDEN

Harlingen Valley Intl

Mon 9/7

5:18 pm-10:15 pm

1 stop5h 57m

Denver Intl

Fri 9/11

3:35 pm-9:52 pm

1 stop5h 17m

$351

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 15 resultsSorted by cheapest first
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See travel insights to Denver from

How to get the cheapest flight ticket from Harlingen to Denver

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 typical price of a round-trip flight between Harlingen and Denver?

Prices are currently low for flights on this route.

Typical prices usually range from $198 to $268.
The lowest price recently found on this route was $190.

What is the cheapest month to fly to Denver?

The cheapest month to fly to Denver from Harlingen is in September. Flight prices, which tend to average around $196, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in September, then you should wait until August to fly from Harlingen, when ticket prices are also cheap, with an average price of $207.

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

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

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

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

Can stopping save me money on Harlingen to Denver flights?

You could potentially save up to 37% on your flight if you consider stops on a Harlingen to Denver flight.

How have Harlingen to Denver flight prices changed over time?

When to book flights from Harlingen to Denver

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

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

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

Fastest flight time

4h 20m

Direct flights

None
The fastest flight from Harlingen to Denver takes 4h 20m
There are no direct flights from Harlingen to Denver. There are no popular flight routes from Harlingen to Denver.
Search flight deals

Frequently asked questions about flying from Harlingen to Denver

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

    Harlingen Valley Intl and Denver Intl are 1025.4 mi apart from one another. Typically, this will take 4h 20m by plane in normal conditions.

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

    Prices for flights from Harlingen Valley Intl Airport to Denver Intl Airport refresh daily.

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

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

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

    The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Best airlines flying from Harlingen to Denver

Compare and see reviews for airlines that fly from Harlingen to Denver with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $196Free CancellationRating
7.1
11,913 reviews
Search American Airlines flights
SouthwestPriceFrom $196Free CancellationRating
8.0
4,218 reviews
Search Southwest flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
10,111 reviews
Search United Airlines flights

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Breckenridge
Estes Park
Black Hawk
Aurora
Fort Collins
Boulder
Westminster
Longmont
Manitou Springs
Lakewood
Greeley
Keystone
Thornton
Cripple Creek
Centennial
Littleton
Englewood
Frisco
Winter Park
Golden

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Harlingen to Denver for you.

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

Yes. momondo enables you to select and highlight flights to Denver from Harlingen with this policy.

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

Once all potential Harlingen to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Price alerts on flights to Denver from Harlingen are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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