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Cheap flights from Denver to Harlingen from $99

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 8/30. 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
9:40 am - 6:05 pmDEN-HRL
7h 25m1 stop
Southwest Logo
5:45 pm - 9:40 pmHRL-DEN
4h 55m1 stop
$197Southwest
Find Deal
Thu, Sep 4 - Fri, Sep 12
Southwest Logo
5:05 pm - 10:15 pmDEN-HRL
4h 10m1 stop
Southwest Logo
9:30 am - 4:00 pmHRL-DEN
7h 30m2 stops
$202Southwest
Find Deal
Fri, Aug 29 - Fri, Sep 5
Southwest Logo
2:00 pm - 10:05 pmDEN-HRL
7h 05m1 stop
Southwest Logo
6:20 am - 11:05 amHRL-DEN
5h 45m1 stop
$228Southwest
Find Deal
Wed, Aug 13 - Wed, Aug 27
American Airlines Logo
7:20 am - 2:15 pmDEN-HRL
5h 55m1 stop
American Airlines Logo
6:30 pm - 10:15 pmHRL-DEN
4h 45m1 stop
$243American Airlines
Find Deal
Wed, Aug 13 - Wed, Aug 20
American Airlines Logo
6:10 am - 2:15 pmDEN-HRL
7h 05m1 stop
American Airlines Logo
2:51 pm - 7:47 pmHRL-DEN
5h 56m1 stop
$246American Airlines
Find Deal
Wed, Aug 27 - Wed, Sep 3
American Airlines Logo
6:10 am - 2:15 pmDEN-HRL
7h 05m1 stop
American Airlines Logo
10:02 am - 1:55 pmHRL-DEN
4h 53m1 stop
$261American Airlines
Find Deal
Wed, Aug 13 - Wed, Aug 27
American Airlines Logo
7:20 am - 2:15 pmDEN-HRL
5h 55m1 stop
American Airlines Logo
6:20 pm - 11:36 pmHRL-DEN
6h 16m1 stop
$269American Airlines
Find Deal
Wed, Aug 13 - Sun, Aug 17
United Airlines Logo
5:02 am - 10:50 amDEN-HRL
4h 48m1 stop
United Airlines Logo
5:00 am - 11:39 amHRL-DEN
7h 39m1 stop
$349United Airlines
Find Deal
Thu, Aug 21 - Sat, Aug 23
United Airlines Logo
8:15 am - 9:52 pmDEN-HRL
12h 37m2 stops
United Airlines Logo
5:00 am - 9:55 amHRL-DEN
5h 55m1 stop
$360United Airlines
Find Deal
Tue, Sep 9 - Tue, Sep 23
United Airlines Logo
5:02 am - 1:20 pmDEN-HRL
7h 18m1 stop
United Airlines Logo
5:00 am - 4:21 pmHRL-DEN
12h 21m2 stops
$407United Airlines
Find Deal
Wed, Aug 13 - Wed, Aug 27

American Airlines flights from Denver to Harlingen, Texas

Our best American Airlines deals on Denver to Harlingen, Texas flight tickets
American Airlines
Aug 13
DEN7:20 amDenver Intl
5h 55m
1 stop
HRL2:15 pmHarlingen Valley Intl
Aug 20
HRL6:30 pmHarlingen Valley Intl
4h 45m
1 stop
DEN10:15 pmDenver Intl
$243
Find similar
American Airlines
Aug 27
DEN6:10 amDenver Intl
7h 05m
1 stop
HRL2:15 pmHarlingen Valley Intl
Sep 3
HRL2:51 pmHarlingen Valley Intl
5h 56m
1 stop
DEN7:47 pmDenver Intl
$246
Find similar
American Airlines
Aug 13
DEN6:10 amDenver Intl
7h 05m
1 stop
HRL2:15 pmHarlingen Valley Intl
Aug 27
HRL10:02 amHarlingen Valley Intl
4h 53m
1 stop
DEN1:55 pmDenver Intl
$261
Find similar

United Airlines flights from Denver to Harlingen, Texas

Our best United Airlines deals on Denver to Harlingen, Texas flight tickets
United Airlines
Aug 21
DEN5:02 amDenver Intl
4h 48m
1 stop
HRL10:50 amHarlingen Valley Intl
Aug 23
HRL5:00 amHarlingen Valley Intl
7h 39m
1 stop
DEN11:39 amDenver Intl
$349
Find similar
United Airlines
Sep 9
DEN8:15 amDenver Intl
12h 37m
2 stops
HRL9:52 pmHarlingen Valley Intl
Sep 23
HRL5:00 amHarlingen Valley Intl
5h 55m
1 stop
DEN9:55 amDenver Intl
$360
Find similar
United Airlines
Aug 13
DEN5:02 amDenver Intl
7h 18m
1 stop
HRL1:20 pmHarlingen Valley Intl
Aug 27
HRL5:00 amHarlingen Valley Intl
12h 21m
2 stops
DEN4:21 pmDenver Intl
$407
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 July 31, 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

Thu 9/4

9:40 am-6:05 pm

1 stop7h 25m

Harlingen Valley Intl

Fri 9/12

5:45 pm-9:40 pm

1 stop4h 55m

$197

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Fri 8/29

5:05 pm-10:15 pm

1 stop4h 10m

Harlingen Valley Intl

Fri 9/5

9:30 am-4:00 pm

2 stops7h 30m

$202

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 8/13

2:00 pm-10:05 pm

1 stop7h 05m

Harlingen Valley Intl

Wed 8/27

6:20 am-11:05 am

1 stop5h 45m

$228

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 8/13

7:20 am-2:15 pm

1 stop5h 55m

Harlingen Valley Intl

Wed 8/20

6:30 pm-10:15 pm

1 stop4h 45m

$243

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 8/27

6:10 am-2:15 pm

1 stop7h 05m

Harlingen Valley Intl

Wed 9/3

2:51 pm-7:47 pm

1 stop5h 56m

$246

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 8/13

6:10 am-2:15 pm

1 stop7h 05m

Harlingen Valley Intl

Wed 8/27

10:02 am-1:55 pm

1 stop4h 53m

$261

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 8/13

7:20 am-2:15 pm

1 stop5h 55m

Harlingen Valley Intl

Sun 8/17

6:20 pm-11:36 pm

1 stop6h 16m

$269

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 8/21

5:02 am-10:50 am

1 stop4h 48m

Harlingen Valley Intl

Sat 8/23

5:00 am-11:39 am

1 stop7h 39m

$349

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 9/9

8:15 am-9:52 pm

2 stops12h 37m

Harlingen Valley Intl

Tue 9/23

5:00 am-9:55 am

1 stop5h 55m

$360

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 8/13

5:02 am-1:20 pm

1 stop7h 18m

Harlingen Valley Intl

Wed 8/27

5:00 am-4:21 pm

2 stops12h 21m

$407

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 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 are 1 cabin classes 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 July 2025, prices for Denver to Harlingen, Texas flights are approximately 63% cheaper 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

Best Price Found

$99

Fastest flight time

4h 10m

Direct flights

None

Airports in Harlingen, Texas

1 airport
The best one-way flight to Harlingen, Texas from Denver in the past 72 hours is $99. The best round-trip flight deal from Denver to Harlingen, Texas found on momondo in the last 72 hours is $197.
The fastest flight from Denver to Harlingen, Texas takes 4h 10m
There are no direct flights from Denver to Harlingen, Texas. Popular non-direct route for this connection is Denver Intl Airport - Harlingen Valley Intl Airport.
There is 1 airport near Harlingen, Texas: Harlingen Valley Intl (HRL)
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 10m.

  • 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
4,246 reviews
Search Southwest flights
American AirlinesPriceFrom $222Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
8,900 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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