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Cheap flights from Harlingen, Texas to Denver from $124

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, Texas to Denver departing on 12/19. 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 Harlingen, Texas to Denver

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
10:05 am - 3:46 pm
HRL
-
DEN
6h 41m1 stop
American Airlines Logo
6:17 am - 11:32 am
DEN
-
HRL
4h 15m1 stop
$259American Airlines
Sat, Apr 18 - Wed, Apr 22
American Airlines Logo
3:22 pm - 8:53 pm
HRL
-
DEN
6h 31m1 stop
American Airlines Logo
7:50 am - 2:49 pm
DEN
-
HRL
5h 59m1 stop
$294American Airlines
Tue, Jan 6 - Fri, Jan 9
United Airlines Logo
9:20 am - 2:24 pm
HRL
-
DEN
6h 04m1 stop
United Airlines Logo
11:47 am - 8:01 pm
DEN
-
HRL
7h 14m1 stop
$327United Airlines
Sat, Jan 24 - Tue, Jan 27
Southwest Logo
8:05 pm - 11:55 pm
HRL
-
DEN
4h 50m1 stop
Southwest Logo
10:45 am - 6:40 pm
DEN
-
HRL
6h 55m2 stops
$342Southwest
Thu, Feb 12 - Sun, Feb 15
American Airlines Logo
2:48 pm - 8:11 pm
HRL
-
DEN
6h 23m1 stop
American Airlines Logo
6:36 am - 2:18 pm
DEN
-
HRL
6h 42m1 stop
$369American Airlines
Wed, Dec 24 - Mon, Dec 29
Southwest Logo
5:45 am - 3:20 pm
HRL
-
DEN
10h 35m2 stops
Southwest Logo
10:45 am - 6:40 pm
DEN
-
HRL
6h 55m2 stops
$377Southwest
Thu, Feb 12 - Sun, Feb 15
Southwest Logo
8:05 pm - 11:55 pm
HRL
-
DEN
4h 50m1 stop
Southwest Logo
2:40 pm - 9:35 pm
DEN
-
HRL
5h 55m1 stop
$383Southwest
Thu, Feb 12 - Sun, Feb 15
Southwest Logo
8:35 pm - 12:15 am
HRL
-
DEN
4h 40m1 stop
Southwest Logo
5:15 am - 11:00 am
DEN
-
HRL
4h 45m1 stop
$384Southwest
Tue, Dec 30 - Sat, Jan 3
Southwest Logo
10:30 am - 4:20 pm
HRL
-
DEN
6h 50m2 stops
Southwest Logo
5:30 am - 11:20 am
DEN
-
HRL
4h 50m1 stop
$394Southwest
Wed, Dec 24 - Mon, Dec 29
United Airlines Logo
12:10 pm - 10:16 am
HRL
-
DEN
23h 06m2 stops
United Airlines Logo
7:45 am - 4:06 pm
DEN
-
HRL
7h 21m1 stop
$395United Airlines
Sat, Jan 24 - Tue, Jan 27

American Airlines flights from Harlingen, Texas to Denver

Our best American Airlines deals on Harlingen, Texas to Denver flight tickets
American Airlines
Apr 18
HRL10:05 amHarlingen Valley Intl
6h 41m
1 stop
DEN3:46 pmDenver Intl
Apr 22
DEN6:17 amDenver Intl
4h 15m
1 stop
HRL11:32 amHarlingen Valley Intl
$259
Find similar
American Airlines
Jan 6
HRL3:22 pmHarlingen Valley Intl
6h 31m
1 stop
DEN8:53 pmDenver Intl
Jan 9
DEN7:50 amDenver Intl
5h 59m
1 stop
HRL2:49 pmHarlingen Valley Intl
$294
Find similar
American Airlines
Dec 24
HRL2:48 pmHarlingen Valley Intl
6h 23m
1 stop
DEN8:11 pmDenver Intl
Dec 29
DEN6:36 amDenver Intl
6h 42m
1 stop
HRL2:18 pmHarlingen Valley Intl
$369
Find similar

United Airlines flights from Harlingen, Texas to Denver

Our best United Airlines deals on Harlingen, Texas to Denver flight tickets
United Airlines
Jan 24
HRL5:25 pmHarlingen Valley Intl
7h 16m
1 stop
DEN11:41 pmDenver Intl
Jan 27
DEN11:47 amDenver Intl
7h 14m
1 stop
HRL8:01 pmHarlingen Valley Intl
$327
Find similar
United Airlines
Dec 22
HRL12:15 pmHarlingen Valley Intl
5h 29m
1 stop
DEN4:44 pmDenver Intl
Dec 25
DEN3:41 pmDenver Intl
5h 18m
1 stop
HRL9:59 pmHarlingen Valley Intl
$344
Find similar
United Airlines
Jan 24
HRL12:10 pmHarlingen Valley Intl
23h 06m
2 stops
DEN10:16 amDenver Intl
Jan 27
DEN7:45 amDenver Intl
7h 21m
1 stop
HRL4:06 pmHarlingen Valley Intl
$395
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Harlingen, Texas 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 December 14, 2025.
Use the filters below to find and compare flights from Harlingen, Texas to Denver that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 4/18

10:05 am-3:46 pm

1 stop6h 41m

Denver Intl

Wed 4/22

6:17 am-11:32 am

1 stop4h 15m

$259

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 1/6

3:22 pm-8:53 pm

1 stop6h 31m

Denver Intl

Fri 1/9

7:50 am-2:49 pm

1 stop5h 59m

$294

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 1/24

9:20 am-2:24 pm

1 stop6h 04m

Denver Intl

Tue 1/27

11:47 am-8:01 pm

1 stop7h 14m

$327

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 2/12

8:05 pm-11:55 pm

1 stop4h 50m

Denver Intl

Sun 2/15

10:45 am-6:40 pm

2 stops6h 55m

$342

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 12/24

2:48 pm-8:11 pm

1 stop6h 23m

Denver Intl

Mon 12/29

6:36 am-2:18 pm

1 stop6h 42m

$369

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 2/12

5:45 am-3:20 pm

2 stops10h 35m

Denver Intl

Sun 2/15

10:45 am-6:40 pm

2 stops6h 55m

$377

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 2/12

8:05 pm-11:55 pm

1 stop4h 50m

Denver Intl

Sun 2/15

2:40 pm-9:35 pm

1 stop5h 55m

$383

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 12/30

8:35 pm-12:15 am

1 stop4h 40m

Denver Intl

Sat 1/3

5:15 am-11:00 am

1 stop4h 45m

$384

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 12/24

10:30 am-4:20 pm

2 stops6h 50m

Denver Intl

Mon 12/29

5:30 am-11:20 am

1 stop4h 50m

$394

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 1/24

12:10 pm-10:16 am

2 stops23h 06m

Denver Intl

Tue 1/27

7:45 am-4:06 pm

1 stop7h 21m

$395

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 Denver from

How to get the cheapest flight ticket from Harlingen, Texas 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 cheapest month to fly to Denver?

The cheapest month to fly to Denver from Harlingen, Texas is in September. Flight prices, which tend to average around $206, 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 October to fly from Harlingen, Texas, when ticket prices are also cheap, with an average price of $258.

What is the cheapest day to depart on your flight to Denver?

The cheapest day to depart on your flight to Denver is on a Wednesday when prices can be found for as low as $258. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Denver is Sunday, with ticket prices averaging around $485.

What is the cheapest time of day to depart on your flight to Denver?

The cheapest time of day to fly to Denver is in the evening when flights can be purchased for as low as $308. Flights in the morning are often more expensive with an average ticket price of $343.

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 Valley Intl to Denver Intl flights?

There is only 1 cabin class available to choose from on Harlingen Valley Intl to Denver Intl 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, Texas to Denver flights?

No. A direct flight is the cheapest option for a flight between Harlingen, Texas to Denver.

How have Harlingen, Texas to Denver flight prices changed over time?

When to book flights from Harlingen, Texas to Denver

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

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

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

Fastest flight time

3h 03m

Direct flights

None
The fastest flight from Harlingen, Texas to Denver takes 3h 03m
There are no direct flights from Harlingen, Texas to Denver. There are no popular flight routes from Harlingen, Texas to Denver.
Search flight deals

  • 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 3h 03m 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, Texas to Denver?

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

Best airlines flying from Harlingen, Texas to Denver

Compare and see reviews for airlines that fly from Harlingen, Texas to Denver with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $196Free CancellationRating
7.9
4,250 reviews
Search Southwest flights
American AirlinesPriceFrom $199Free CancellationRating
7.2
11,052 reviews
Search American Airlines flights
United AirlinesPriceFrom $302Free CancellationRating
7.4
9,092 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
Keystone
Cripple Creek
Manitou Springs
Longmont
Boulder
Greeley
Lakewood
Thornton
Westminster
Winter Park
Copper Mountain
Silverthorne
Frisco
Centennial
Grand Lake

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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