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Cheap flights from Harlingen, Texas to Denver from $135

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 8/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Harlingen, Texas to Denver (HRL-DEN)

Cheap round-trip flights

Southwest Logo
12:20 pm - 4:05 pmHRL-DEN
4h 45m1 stop
Southwest Logo
6:00 am - 11:10 amDEN-HRL
4h 10m1 stop
$171Southwest
Find Deal
Wed, Oct 1 - Wed, Oct 15
Southwest Logo
12:50 pm - 6:55 pmHRL-DEN
7h 05m1 stop
Southwest Logo
5:00 am - 11:20 amDEN-HRL
5h 20m1 stop
$173Southwest
Find Deal
Sat, Sep 6 - Mon, Sep 8
Southwest Logo
6:15 am - 11:20 amHRL-DEN
6h 05m2 stops
Southwest Logo
5:00 am - 11:20 amDEN-HRL
5h 20m1 stop
$178Southwest
Find Deal
Sat, Sep 6 - Mon, Sep 8
Southwest Logo
1:30 pm - 8:40 pmHRL-DEN
8h 10m1 stop
Southwest Logo
10:35 am - 9:05 pmDEN-HRL
9h 30m1 stop
$184Southwest
Find Deal
Sat, Nov 1 - Mon, Nov 3
American Airlines Logo
6:30 pm - 10:15 pmHRL-DEN
4h 45m1 stop
American Airlines Logo
12:41 pm - 6:05 pmDEN-HRL
4h 24m1 stop
$191American Airlines
Find Deal
Sat, Aug 30 - Wed, Sep 3
American Airlines Logo
6:30 pm - 10:15 pmHRL-DEN
4h 45m1 stop
American Airlines Logo
5:06 pm - 10:57 pmDEN-HRL
4h 51m1 stop
$193American Airlines
Find Deal
Sat, Aug 30 - Wed, Sep 3
Delta Logo
3:14 pm - 11:04 pmHRL-DEN
8h 50m1 stop
Delta Logo
6:00 am - 2:19 pmDEN-HRL
7h 19m1 stop
$217Delta
Find Deal
Fri, Oct 24 - Mon, Oct 27
Delta Logo
3:14 pm - 11:04 pmHRL-DEN
8h 50m1 stop
Delta Logo
6:00 am - 2:19 pmDEN-HRL
7h 19m1 stop
$228Delta
Find Deal
Fri, Oct 24 - Mon, Oct 27
United Airlines Logo
5:00 am - 8:54 amHRL-DEN
4h 54m1 stop
United Airlines Logo
7:45 am - 4:02 pmDEN-HRL
7h 17m1 stop
$268United Airlines
Find Deal
Thu, Aug 21 - Mon, Aug 25
United Airlines Logo
5:20 pm - 10:00 pmHRL-DEN
5h 40m1 stop
United Airlines Logo
8:15 am - 7:41 pmDEN-HRL
10h 26m2 stops
$366United Airlines
Find Deal
Wed, Sep 24 - Mon, Sep 29

Delta flights from Harlingen, Texas to Denver

Our best Delta deals on Harlingen, Texas to Denver flight tickets
Delta
Oct 24
HRL3:14 pmHarlingen Valley Intl
8h 50m
1 stop
DEN11:04 pmDenver Intl
Oct 27
DEN6:00 amDenver Intl
7h 19m
1 stop
HRL2:19 pmHarlingen Valley Intl
$217
Find similar
Delta
Oct 24
HRL3:14 pmHarlingen Valley Intl
8h 50m
1 stop
DEN11:04 pmDenver Intl
Oct 27
DEN6:00 amDenver Intl
7h 19m
1 stop
HRL2:19 pmHarlingen Valley Intl
$228
Find similar

American Airlines flights from Harlingen, Texas to Denver

Our best American Airlines deals on Harlingen, Texas to Denver flight tickets
American Airlines
Aug 30
HRL6:30 pmHarlingen Valley Intl
4h 45m
1 stop
DEN10:15 pmDenver Intl
Sep 3
DEN12:41 pmDenver Intl
4h 24m
1 stop
HRL6:05 pmHarlingen Valley Intl
$191
Find similar
American Airlines
Aug 30
HRL6:30 pmHarlingen Valley Intl
4h 45m
1 stop
DEN10:15 pmDenver Intl
Sep 3
DEN5:06 pmDenver Intl
4h 51m
1 stop
HRL10:57 pmHarlingen Valley Intl
$193
Find similar
American Airlines
Sep 24
HRL6:35 pmHarlingen Valley Intl
4h 34m
1 stop
DEN10:09 pmDenver Intl
Sep 29
DEN5:44 amDenver Intl
7h 35m
1 stop
HRL2:19 pmHarlingen Valley Intl
$267
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 August 6, 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

Wed 10/1

12:20 pm-4:05 pm

1 stop4h 45m

Denver Intl

Wed 10/15

6:00 am-11:10 am

1 stop4h 10m

$171

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 9/6

12:50 pm-6:55 pm

1 stop7h 05m

Denver Intl

Mon 9/8

5:00 am-11:20 am

1 stop5h 20m

$173

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 9/6

6:15 am-11:20 am

2 stops6h 05m

Denver Intl

Mon 9/8

5:00 am-11:20 am

1 stop5h 20m

$178

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 11/1

1:30 pm-8:40 pm

1 stop8h 10m

Denver Intl

Mon 11/3

10:35 am-9:05 pm

1 stop9h 30m

$184

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 8/30

6:30 pm-10:15 pm

1 stop4h 45m

Denver Intl

Wed 9/3

12:41 pm-6:05 pm

1 stop4h 24m

$191

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 8/30

6:30 pm-10:15 pm

1 stop4h 45m

Denver Intl

Wed 9/3

5:06 pm-10:57 pm

1 stop4h 51m

$193

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 10/24

3:14 pm-11:04 pm

1 stop8h 50m

Denver Intl

Mon 10/27

6:00 am-2:19 pm

1 stop7h 19m

$217

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 10/24

3:14 pm-11:04 pm

1 stop8h 50m

Denver Intl

Mon 10/27

6:00 am-2:19 pm

1 stop7h 19m

$228

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 8/21

5:00 am-8:54 am

1 stop4h 54m

Denver Intl

Mon 8/25

7:45 am-4:02 pm

1 stop7h 17m

$268

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 9/24

5:20 pm-10:00 pm

1 stop5h 40m

Denver Intl

Mon 9/29

8:15 am-7:41 pm

2 stops10h 26m

$366

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

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 $243, 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 $250.

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 are 1 cabin classes 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.

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

As of August 2025, prices for Harlingen, Texas to Denver flights are approximately 2% more expensive 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

Best Price Found

$135

Fastest flight time

4h 30m

Direct flights

None

Airports in Denver

1 airport
The best one-way flight to Denver from Harlingen, Texas in the past 72 hours is $135. The best round-trip flight deal from Harlingen, Texas to Denver found on momondo in the last 72 hours is $171.
The fastest flight from Harlingen, Texas to Denver takes 4h 30m
There are no direct flights from Harlingen, Texas to Denver. Popular non-direct route for this connection is Harlingen Valley Intl Airport - Denver Intl Airport.
There is 1 airport near Denver: Denver Intl (DEN)
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 4h 30m 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
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $199Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Denver?

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

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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