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Cheap flights from Denver to Harlingen from $84

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Harlingen departing on 10/28. 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 Denver to Harlingen

Cheap round-trip flights

Southwest Logo
9:25 am - 5:05 pmDEN-HRL
6h 40m1 stop
Southwest Logo
10:30 am - 3:35 pmHRL-DEN
6h 05m1 stop
$167Southwest
Find Deal
Tue, Nov 11 - Tue, Nov 18
Southwest Logo
10:30 am - 6:00 pmDEN-HRL
6h 30m2 stops
Southwest Logo
6:30 pm - 10:15 pmHRL-DEN
4h 45m1 stop
$172Southwest
Find Deal
Tue, Nov 11 - Tue, Nov 18
Southwest Logo
10:30 am - 6:00 pmDEN-HRL
6h 30m2 stops
Southwest Logo
11:30 am - 4:55 pmHRL-DEN
6h 25m2 stops
$177Southwest
Find Deal
Tue, Nov 11 - Tue, Nov 18
Southwest Logo
1:05 pm - 9:05 pmDEN-HRL
7h 00m1 stop
Southwest Logo
8:05 pm - 12:10 amHRL-DEN
5h 05m1 stop
$182Southwest
Find Deal
Tue, Nov 4 - Mon, Nov 10
American Airlines Logo
8:13 am - 3:31 pmDEN-HRL
6h 18m1 stop
American Airlines Logo
6:40 pm - 10:19 pmHRL-DEN
4h 39m1 stop
$197American Airlines
Find Deal
Thu, Nov 6 - Mon, Nov 10
American Airlines Logo
6:10 am - 11:39 amDEN-HRL
4h 29m1 stop
American Airlines Logo
5:50 am - 9:26 amHRL-DEN
4h 36m1 stop
$225American Airlines
Find Deal
Wed, Feb 18 - Wed, Feb 25
United Airlines Logo
4:42 pm - 11:18 pmDEN-HRL
5h 36m1 stop
United Airlines Logo
5:00 am - 11:43 amHRL-DEN
7h 43m1 stop
$339United Airlines
Find Deal
Mon, Sep 29 - Fri, Oct 3
United Airlines Logo
9:42 am - 9:59 pmDEN-HRL
11h 17m2 stops
United Airlines Logo
5:25 pm - 10:06 pmHRL-DEN
5h 41m1 stop
$341United Airlines
Find Deal
Thu, Jan 15 - Mon, Jan 19
Delta Logo
6:00 am - 2:46 pmDEN-HRL
7h 46m1 stop
Delta Logo
3:41 pm - 11:16 pmHRL-DEN
8h 35m1 stop
$379Delta
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Thu, Dec 4 - Sun, Dec 7
Delta Logo
6:00 am - 2:46 pmDEN-HRL
7h 46m1 stop
Delta Logo
3:41 pm - 11:16 pmHRL-DEN
8h 35m1 stop
$409Delta
Find Deal
Thu, Dec 4 - Sun, Dec 7

United Airlines flights from Denver to Harlingen, Texas

Our best United Airlines deals on Denver to Harlingen, Texas flight tickets
United Airlines
Sep 29
DEN4:42 pmDenver Intl
5h 36m
1 stop
HRL11:18 pmHarlingen Valley Intl
Oct 3
HRL5:00 amHarlingen Valley Intl
7h 43m
1 stop
DEN11:43 amDenver Intl
$339
Find similar
United Airlines
Jan 15
DEN9:42 amDenver Intl
11h 17m
2 stops
HRL9:59 pmHarlingen Valley Intl
Jan 19
HRL5:25 pmHarlingen Valley Intl
5h 41m
1 stop
DEN10:06 pmDenver Intl
$341
Find similar
United Airlines
Feb 18
DEN9:35 amDenver Intl
11h 24m
2 stops
HRL9:59 pmHarlingen Valley Intl
Feb 22
HRL5:20 pmHarlingen Valley Intl
7h 07m
1 stop
DEN11:27 pmDenver Intl
$376
Find similar

American Airlines flights from Denver to Harlingen, Texas

Our best American Airlines deals on Denver to Harlingen, Texas flight tickets
American Airlines
Nov 6
DEN8:13 amDenver Intl
6h 18m
1 stop
HRL3:31 pmHarlingen Valley Intl
Nov 10
HRL6:40 pmHarlingen Valley Intl
4h 39m
1 stop
DEN10:19 pmDenver Intl
$197
Find similar
American Airlines
Feb 18
DEN6:10 amDenver Intl
4h 29m
1 stop
HRL11:39 amHarlingen Valley Intl
Feb 25
HRL5:50 amHarlingen Valley Intl
4h 36m
1 stop
DEN9:26 amDenver Intl
$225
Find similar
American Airlines
Mar 3
DEN8:30 amDenver Intl
6h 43m
1 stop
HRL4:13 pmHarlingen Valley Intl
Mar 10
HRL7:55 pmHarlingen Valley Intl
5h 09m
1 stop
DEN12:04 amDenver Intl
$255
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Harlingen, Texas 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 September 15, 2025.
Use the filters below to find and compare flights from Denver to Harlingen, Texas that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 11/11

9:25 am-5:05 pm

1 stop6h 40m

Harlingen Valley Intl

Tue 11/18

10:30 am-3:35 pm

1 stop6h 05m

$167

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 11/11

10:30 am-6:00 pm

2 stops6h 30m

Harlingen Valley Intl

Tue 11/18

6:30 pm-10:15 pm

1 stop4h 45m

$172

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 11/11

10:30 am-6:00 pm

2 stops6h 30m

Harlingen Valley Intl

Tue 11/18

11:30 am-4:55 pm

2 stops6h 25m

$177

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 11/4

1:05 pm-9:05 pm

1 stop7h 00m

Harlingen Valley Intl

Mon 11/10

8:05 pm-12:10 am

1 stop5h 05m

$182

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 11/6

8:13 am-3:31 pm

1 stop6h 18m

Harlingen Valley Intl

Mon 11/10

6:40 pm-10:19 pm

1 stop4h 39m

$197

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 2/18

6:10 am-11:39 am

1 stop4h 29m

Harlingen Valley Intl

Wed 2/25

5:50 am-9:26 am

1 stop4h 36m

$225

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Mon 9/29

4:42 pm-11:18 pm

1 stop5h 36m

Harlingen Valley Intl

Fri 10/3

5:00 am-11:43 am

1 stop7h 43m

$339

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 1/15

9:42 am-9:59 pm

2 stops11h 17m

Harlingen Valley Intl

Mon 1/19

5:25 pm-10:06 pm

1 stop5h 41m

$341

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 12/4

6:00 am-2:46 pm

1 stop7h 46m

Harlingen Valley Intl

Sun 12/7

3:41 pm-11:16 pm

1 stop8h 35m

$379

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 12/4

6:00 am-2:46 pm

1 stop7h 46m

Harlingen Valley Intl

Sun 12/7

3:41 pm-11:16 pm

1 stop8h 35m

$409

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 Harlingen from

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

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 Harlingen, Texas?

The month of February is, on average, the cheapest month to fly to Harlingen, Texas from Denver, with most prices found around $273. If you are unable to visit Harlingen, Texas during the month of February, then departing from Denver during the month May is also very affordable. Most momondo users find prices during this month for around $285.

What is the cheapest day to depart on your flight to Harlingen, Texas?

The cheapest day to depart on your flight to Harlingen, Texas is on a Tuesday when prices can be found for as low as $245. This is often the case because there is less demand to fly during this day of the week. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Denver to Harlingen, Texas for around $354.

What is the cheapest time of day to depart on your flight to Harlingen, Texas?

Our most recent data shows that the best time of day to fly to Harlingen, Texas is in the afternoon. Flights from Denver to Harlingen, Texas during this time can be as low as $341. Flights in the morning are often more expensive with an average ticket price of $446.

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

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

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

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

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

As of September 2025, prices for Denver to Harlingen, Texas flights are approximately 22% more expensive when compared to flights at the same time last year.

When to book flights from Denver to Harlingen, Texas

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

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

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

Direct flights

None
There are no direct flights from Denver to Harlingen, Texas. There are no popular flight routes from Denver to Harlingen, Texas.
Search flight deals

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

    Denver Intl and Harlingen Valley Intl are 1025.4 mi apart from one another. A reasonable flight in good conditions will take 4h 24m.

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

    Prices for flights from Denver Intl Airport to Harlingen Valley Intl Airport are refreshed on a daily basis.

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Harlingen Valley Intl Airport.

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

    The travel and health documents you'll need for your trip to Harlingen Valley Intl Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Harlingen Valley Intl Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

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

Best airlines flying from Denver to Harlingen, Texas

Compare and see reviews for airlines that fly from Denver to Harlingen, Texas with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $196Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $222Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
8,929 reviews
Search United Airlines flights

Why use momondo?

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

It is quick and easy to find Denver to Harlingen flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Harlingen that suits you.

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

Yes. All flights to Harlingen from Denver on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo helps you find the best flight between Denver and Harlingen by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Yes. momondo can track prices for Denver to Harlingen flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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