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Cheap flights from Harlingen to Denver from $96

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 9/15. 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
2:10 pm - 6:45 pm
HRL
-
DEN
5h 35m
1 stop
Southwest Logo
7:05 am - 1:00 pm
DEN
-
HRL
4h 55m
1 stop
$194Southwest
Wed, Jul 29 - Tue, Aug 4
Southwest Logo
4:15 pm - 8:25 pm
HRL
-
DEN
5h 10m
1 stop
Southwest Logo
5:00 am - 10:00 am
DEN
-
HRL
4h 00m
1 stop
$199Southwest
Sat, Jul 4 - Fri, Jul 10
Southwest Logo
6:30 pm - 12:20 am
HRL
-
DEN
6h 50m
1 stop
Southwest Logo
8:55 am - 3:50 pm
DEN
-
HRL
5h 55m
2 stops
$200Southwest
Thu, Jul 30 - Wed, Aug 5
Southwest Logo
10:55 am - 5:05 pm
HRL
-
DEN
7h 10m
2 stops
Southwest Logo
1:40 pm - 10:00 pm
DEN
-
HRL
7h 20m
1 stop
$204Southwest
Thu, Aug 13 - Thu, Aug 20
Southwest Logo
2:10 pm - 6:45 pm
HRL
-
DEN
5h 35m
1 stop
Southwest Logo
9:00 am - 8:10 pm
DEN
-
HRL
10h 10m
2 stops
$205Southwest
Wed, Jul 29 - Tue, Aug 4
Southwest Logo
10:55 am - 5:05 pm
HRL
-
DEN
7h 10m
2 stops
Southwest Logo
9:05 am - 5:15 pm
DEN
-
HRL
7h 10m
2 stops
$209Southwest
Thu, Aug 13 - Thu, Aug 20
Southwest Logo
2:10 pm - 6:45 pm
HRL
-
DEN
5h 35m
1 stop
Southwest Logo
5:00 am - 10:00 am
DEN
-
HRL
4h 00m
1 stop
$273Southwest
Wed, Jul 15 - Fri, Jul 17
Southwest Logo
2:10 pm - 6:45 pm
HRL
-
DEN
5h 35m
1 stop
Southwest Logo
5:45 am - 1:30 pm
DEN
-
HRL
6h 45m
1 stop
$274Southwest
Tue, Jul 28 - Wed, Jul 29
Southwest Logo
5:10 pm - 9:00 pm
HRL
-
DEN
4h 50m
1 stop
Southwest Logo
7:00 am - 1:30 pm
DEN
-
HRL
5h 30m
1 stop
$282Southwest
Sat, Jul 25 - Tue, Jul 28
Southwest Logo
2:10 pm - 7:40 pm
HRL
-
DEN
6h 30m
2 stops
Southwest Logo
9:00 am - 8:10 pm
DEN
-
HRL
10h 10m
2 stops
$285Southwest
Wed, Jul 29 - Tue, Aug 4

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Southwest flights from Harlingen to Denver

Our best Southwest deals on Harlingen to Denver flight tickets
Southwest
Jul 29
HRL2:10 pmHarlingen Valley Intl
5h 35m
1 stop
DEN6:45 pmDenver Intl
Aug 4
DEN7:05 amDenver Intl
4h 55m
1 stop
HRL1:00 pmHarlingen Valley Intl
$194
Southwest
Jul 4
HRL4:15 pmHarlingen Valley Intl
5h 10m
1 stop
DEN8:25 pmDenver Intl
Jul 10
DEN5:00 amDenver Intl
4h 00m
1 stop
HRL10:00 amHarlingen Valley Intl
$199
Southwest
Jul 30
HRL6:30 pmHarlingen Valley Intl
6h 50m
1 stop
DEN12:20 amDenver Intl
Aug 5
DEN8:55 amDenver Intl
5h 55m
2 stops
HRL3:50 pmHarlingen Valley Intl
$200

United Airlines flights from Harlingen to Denver

Our best United Airlines deals on Harlingen to Denver flight tickets
United Airlines
Oct 27
HRL5:10 amHarlingen Valley Intl
5h 45m
1 stop
DEN9:55 amDenver Intl
Oct 31
DEN3:40 pmDenver Intl
5h 04m
1 stop
HRL9:44 pmHarlingen Valley Intl
$401
United Airlines
Oct 27
HRL5:10 amHarlingen Valley Intl
7h 22m
1 stop
DEN11:32 amDenver Intl
Oct 31
DEN7:55 amDenver Intl
12h 49m
2 stops
HRL9:44 pmHarlingen Valley Intl
$421
United Airlines
Oct 27
HRL7:20 amHarlingen Valley Intl
5h 12m
1 stop
DEN11:32 amDenver Intl
Oct 31
DEN7:32 amDenver Intl
13h 12m
2 stops
HRL9:44 pmHarlingen Valley Intl
$439

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 June 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 - DEN

HRLDEN

Harlingen Valley Intl

Wed 7/29

2:10 pm-6:45 pm

1 stop5h 35m

Denver Intl

Tue 8/4

7:05 am-1:00 pm

1 stop4h 55m

$194
Quickest round-trip

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 7/4

4:15 pm-8:25 pm

1 stop5h 10m

Denver Intl

Fri 7/10

5:00 am-10:00 am

1 stop4h 00m

$199

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 7/30

6:30 pm-12:20 am

1 stop6h 50m

Denver Intl

Wed 8/5

8:55 am-3:50 pm

2 stops5h 55m

$200

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 8/13

10:55 am-5:05 pm

2 stops7h 10m

Denver Intl

Thu 8/20

1:40 pm-10:00 pm

1 stop7h 20m

$204

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 7/29

2:10 pm-6:45 pm

1 stop5h 35m

Denver Intl

Tue 8/4

9:00 am-8:10 pm

2 stops10h 10m

$205

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 8/13

10:55 am-5:05 pm

2 stops7h 10m

Denver Intl

Thu 8/20

9:05 am-5:15 pm

2 stops7h 10m

$209

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 7/15

2:10 pm-6:45 pm

1 stop5h 35m

Denver Intl

Fri 7/17

5:00 am-10:00 am

1 stop4h 00m

$273

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 7/28

2:10 pm-6:45 pm

1 stop5h 35m

Denver Intl

Wed 7/29

5:45 am-1:30 pm

1 stop6h 45m

$274

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 7/25

5:10 pm-9:00 pm

1 stop4h 50m

Denver Intl

Tue 7/28

7:00 am-1:30 pm

1 stop5h 30m

$282

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 7/29

2:10 pm-7:40 pm

2 stops6h 30m

Denver Intl

Tue 8/4

9:00 am-8:10 pm

2 stops10h 10m

$285

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 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?

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 October to fly from Harlingen, when ticket prices are also cheap, with an average price of $258.

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 43% 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 00m

Direct flights

None
The fastest flight from Harlingen to Denver takes 4h 00m
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 00m 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
SouthwestPriceFrom $196Free CancellationRating
7.9
4,234 reviews
Search Southwest flights
American AirlinesPriceFrom $196Free CancellationRating
7.1
11,644 reviews
Search American Airlines flights
United AirlinesPriceFrom $268Free CancellationRating
7.4
9,810 reviews
Search United Airlines flights

  • Southwest Flights From Harlingen to Denver

    The lowest priced Southwest flight from Harlingen to Denver from the last 72 hours was $196. Generally, Southwest has 3 flights on this route every week with an average price of $331. Southwest is rated 7.9/10 by our users.

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
Manitou Springs
Boulder
Longmont
Greeley
Westminster
Lakewood
Keystone
Cripple Creek
Thornton
Englewood
Centennial
Frisco
Littleton
Winter Park
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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