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Cheap flights from Harlingen, Texas to Denver from $130

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 1/11. 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.
Southwest Logo
1:20 pm - 5:10 pmHRL-DEN
4h 50m1 stop
Southwest Logo
9:25 am - 5:05 pmDEN-HRL
6h 40m1 stop
$200Southwest
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Thu, Nov 27 - Wed, Dec 3
Southwest Logo
5:50 am - 1:10 pmHRL-DEN
8h 20m2 stops
Southwest Logo
12:10 pm - 6:00 pmDEN-HRL
4h 50m1 stop
$205Southwest
Find Deal
Thu, Nov 27 - Wed, Dec 3
Delta Logo
3:39 pm - 11:14 pmHRL-DEN
8h 35m1 stop
Delta Logo
5:45 am - 2:43 pmDEN-HRL
7h 58m1 stop
$217Delta
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Thu, Nov 13 - Thu, Nov 20
Delta Logo
3:39 pm - 11:04 pmHRL-DEN
8h 25m1 stop
Delta Logo
6:05 am - 2:43 pmDEN-HRL
7h 38m1 stop
$248Delta
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Tue, Oct 28 - Tue, Nov 4
Multiple Airlines Logo
12:22 pm - 11:22 amHRL-DEN
24h 00m1 stop
Multiple Airlines Logo
8:30 pm - 10:31 amDEN-HRL
13h 01m1 stop
$303Multiple Airlines
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Wed, Nov 26 - Fri, Nov 28
Multiple Airlines Logo
11:35 am - 7:09 amHRL-DEN
20h 34m1 stop
Multiple Airlines Logo
8:56 pm - 10:36 amDEN-HRL
12h 40m1 stop
$341Multiple Airlines
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Sun, Oct 26 - Wed, Oct 29
United Airlines Logo
5:00 am - 8:59 amHRL-DEN
4h 59m1 stop
United Airlines Logo
1:25 pm - 7:39 pmDEN-HRL
5h 14m1 stop
$348United Airlines
Find Deal
Sun, Nov 9 - Mon, Nov 10
United Airlines Logo
5:00 pm - 11:36 pmHRL-DEN
7h 36m1 stop
United Airlines Logo
5:00 am - 10:59 amDEN-HRL
4h 59m1 stop
$351United Airlines
Find Deal
Fri, Oct 31 - Tue, Nov 4
American Airlines Logo
6:20 pm - 9:54 pmHRL-DEN
4h 34m1 stop
American Airlines Logo
10:40 am - 6:23 pmDEN-HRL
6h 43m1 stop
$389American Airlines
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Mon, Oct 27 - Fri, Oct 31
American Airlines Logo
6:20 pm - 9:54 pmHRL-DEN
4h 34m1 stop
American Airlines Logo
5:00 am - 10:38 amDEN-HRL
4h 38m1 stop
$414American Airlines
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Mon, Oct 27 - Sun, Nov 2

Delta flights from Harlingen, Texas to Denver

Our best Delta deals on Harlingen, Texas to Denver flight tickets
Delta
Nov 13
HRL3:39 pmHarlingen Valley Intl
8h 35m
1 stop
DEN11:14 pmDenver Intl
Nov 20
DEN5:45 amDenver Intl
7h 58m
1 stop
HRL2:43 pmHarlingen Valley Intl
$217
Find similar
Delta
Oct 28
HRL3:39 pmHarlingen Valley Intl
8h 25m
1 stop
DEN11:04 pmDenver Intl
Nov 4
DEN6:05 amDenver Intl
7h 38m
1 stop
HRL2:43 pmHarlingen Valley Intl
$248
Find similar
Delta
Apr 7
HRL3:00 pmHarlingen Valley Intl
8h 36m
1 stop
DEN10:36 pmDenver Intl
Apr 8
DEN6:10 amDenver Intl
7h 19m
1 stop
HRL2:29 pmHarlingen Valley Intl
$259
Find similar

United Airlines flights from Harlingen, Texas to Denver

Our best United Airlines deals on Harlingen, Texas to Denver flight tickets
United Airlines
Nov 9
HRL5:00 amHarlingen Valley Intl
4h 59m
1 stop
DEN8:59 amDenver Intl
Nov 10
DEN1:25 pmDenver Intl
5h 14m
1 stop
HRL7:39 pmHarlingen Valley Intl
$348
Find similar
United Airlines
Oct 31
HRL5:00 pmHarlingen Valley Intl
7h 36m
1 stop
DEN11:36 pmDenver Intl
Nov 4
DEN5:00 amDenver Intl
4h 59m
1 stop
HRL10:59 amHarlingen Valley Intl
$351
Find similar
United Airlines
Nov 28
HRL7:00 amHarlingen Valley Intl
5h 55m
1 stop
DEN11:55 amDenver Intl
Dec 3
DEN3:05 pmDenver Intl
5h 49m
1 stop
HRL9:54 pmHarlingen Valley Intl
$357
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 October 16, 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

Thu 11/27

1:20 pm-5:10 pm

1 stop4h 50m

Denver Intl

Wed 12/3

9:25 am-5:05 pm

1 stop6h 40m

$200

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 11/27

5:50 am-1:10 pm

2 stops8h 20m

Denver Intl

Wed 12/3

12:10 pm-6:00 pm

1 stop4h 50m

$205

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 11/13

3:39 pm-11:14 pm

1 stop8h 35m

Denver Intl

Thu 11/20

5:45 am-2:43 pm

1 stop7h 58m

$217

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 10/28

3:39 pm-11:04 pm

1 stop8h 25m

Denver Intl

Tue 11/4

6:05 am-2:43 pm

1 stop7h 38m

$248

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 11/26

12:22 pm-11:22 am

1 stop24h 00m

Denver Intl

Fri 11/28

8:30 pm-10:31 am

1 stop13h 01m

$303

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sun 10/26

11:35 am-7:09 am

1 stop20h 34m

Denver Intl

Wed 10/29

8:56 pm-10:36 am

1 stop12h 40m

$341

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sun 11/9

5:00 am-8:59 am

1 stop4h 59m

Denver Intl

Mon 11/10

1:25 pm-7:39 pm

1 stop5h 14m

$348

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 10/31

5:00 pm-11:36 pm

1 stop7h 36m

Denver Intl

Tue 11/4

5:00 am-10:59 am

1 stop4h 59m

$351

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Mon 10/27

6:20 pm-9:54 pm

1 stop4h 34m

Denver Intl

Fri 10/31

10:40 am-6:23 pm

1 stop6h 43m

$389

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Mon 10/27

6:20 pm-9:54 pm

1 stop4h 34m

Denver Intl

Sun 11/2

5:00 am-10:38 am

1 stop4h 38m

$414

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $256.

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?

You could potentially save up to 19% on your flight if you consider stops on a Harlingen, Texas to Denver flight.

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

As of October 2025, prices for Harlingen, Texas to Denver flights are approximately 14% cheaper when compared to flights at the same time last year.

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

Direct flights

None
There are no direct flights from Harlingen, Texas to Denver. There are no popular flight routes from Harlingen, Texas to Denver.
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  • 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 34m 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
8.0
4,241 reviews
Search Southwest flights
American AirlinesPriceFrom $199Free CancellationRating
7.2
11,043 reviews
Search American Airlines flights
United AirlinesPriceFrom $302Free CancellationRating
7.4
8,982 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
Boulder
Longmont
Lakewood
Greeley
Thornton
Westminster
Winter Park
Copper Mountain
Silverthorne
Frisco
Grand Lake
Central City

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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