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Cheap flights from Denver to Harlingen from $179

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Harlingen departing on 2/19. 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

Enter your travel dates to find the best prices.
Southwest Logo
4:35 pm - 10:15 pm
DEN
-
HRL
4h 40m1 stop
Southwest Logo
8:10 pm - 11:55 pm
HRL
-
DEN
4h 45m1 stop
$179Southwest
Thu, Feb 19 - Thu, Feb 26
Southwest Logo
4:35 pm - 10:15 pm
DEN
-
HRL
4h 40m1 stop
Southwest Logo
5:45 am - 3:20 pm
HRL
-
DEN
10h 35m2 stops
$184Southwest
Thu, Feb 19 - Thu, Feb 26
Southwest Logo
1:10 pm - 10:15 pm
DEN
-
HRL
8h 05m2 stops
Southwest Logo
5:45 am - 3:20 pm
HRL
-
DEN
10h 35m2 stops
$253Southwest
Thu, Feb 19 - Thu, Feb 26
United Airlines Logo
3:39 pm - 9:59 pm
DEN
-
HRL
5h 20m1 stop
United Airlines Logo
5:25 pm - 11:41 pm
HRL
-
DEN
7h 16m1 stop
$297United Airlines
Thu, Jan 15 - Mon, Jan 19
American Airlines Logo
7:50 am - 2:46 pm
DEN
-
HRL
5h 56m1 stop
American Airlines Logo
6:02 am - 9:55 am
HRL
-
DEN
4h 53m1 stop
$311American Airlines
Thu, Jan 15 - Mon, Jan 19
United Airlines Logo
1:30 pm - 9:59 pm
DEN
-
HRL
7h 29m1 stop
United Airlines Logo
5:25 pm - 10:06 pm
HRL
-
DEN
5h 41m1 stop
$312United Airlines
Sat, Jan 24 - Tue, Jan 27
American Airlines Logo
8:09 am - 2:12 pm
DEN
-
HRL
5h 03m1 stop
American Airlines Logo
6:00 am - 9:30 am
HRL
-
DEN
4h 30m1 stop
$319American Airlines
Wed, Feb 18 - Sun, Feb 22
American Airlines Logo
8:09 am - 2:12 pm
DEN
-
HRL
5h 03m1 stop
American Airlines Logo
6:00 am - 9:30 am
HRL
-
DEN
4h 30m1 stop
$320American Airlines
Wed, Feb 18 - Sun, Feb 22
United Airlines Logo
3:39 pm - 9:59 pm
DEN
-
HRL
5h 20m1 stop
United Airlines Logo
9:20 am - 2:24 pm
HRL
-
DEN
6h 04m1 stop
$327United Airlines
Sat, Jan 24 - Tue, Jan 27
American Airlines Logo
4:50 pm - 10:52 pm
DEN
-
HRL
5h 02m1 stop
American Airlines Logo
6:00 am - 9:30 am
HRL
-
DEN
4h 30m1 stop
$328American Airlines
Sun, Feb 15 - Fri, Feb 20

Southwest flights from Denver to Harlingen, Texas

Our best Southwest deals on Denver to Harlingen, Texas flight tickets
Southwest
Jan 22
DEN12:45 pmDenver Intl
7h 05m
1 stop
HRL8:50 pmHarlingen Valley Intl
Jan 25
HRL5:40 amHarlingen Valley Intl
5h 05m
1 stop
DEN9:45 amDenver Intl
$169
Find similar
Southwest
Jan 22
DEN2:25 pmDenver Intl
6h 25m
2 stops
HRL9:50 pmHarlingen Valley Intl
Jan 25
HRL7:10 pmHarlingen Valley Intl
4h 30m
1 stop
DEN10:40 pmDenver Intl
$174
Find similar
Southwest
Feb 15
DEN10:45 amDenver Intl
6h 55m
2 stops
HRL6:40 pmHarlingen Valley Intl
Feb 20
HRL7:00 amHarlingen Valley Intl
5h 15m
1 stop
DEN11:15 amDenver Intl
$273
Find similar

American Airlines flights from Denver to Harlingen, Texas

Our best American Airlines deals on Denver to Harlingen, Texas flight tickets
American Airlines
Jan 15
DEN7:50 amDenver Intl
5h 56m
1 stop
HRL2:46 pmHarlingen Valley Intl
Jan 19
HRL6:44 pmHarlingen Valley Intl
4h 50m
1 stop
DEN10:34 pmDenver Intl
$280
Find similar
American Airlines
Feb 18
DEN8:09 amDenver Intl
5h 03m
1 stop
HRL2:12 pmHarlingen Valley Intl
Feb 22
HRL6:00 amHarlingen Valley Intl
4h 30m
1 stop
DEN9:30 amDenver Intl
$298
Find similar
American Airlines
Feb 15
DEN12:33 pmDenver Intl
6h 04m
1 stop
HRL7:37 pmHarlingen Valley Intl
Feb 20
HRL6:00 amHarlingen Valley Intl
4h 30m
1 stop
DEN9:30 amDenver Intl
$299
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 December 11, 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 2/19

4:35 pm-10:15 pm

1 stop4h 40m

Harlingen Valley Intl

Thu 2/26

8:10 pm-11:55 pm

1 stop4h 45m

$179

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 2/19

4:35 pm-10:15 pm

1 stop4h 40m

Harlingen Valley Intl

Thu 2/26

5:45 am-3:20 pm

2 stops10h 35m

$184

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 2/19

1:10 pm-10:15 pm

2 stops8h 05m

Harlingen Valley Intl

Thu 2/26

5:45 am-3:20 pm

2 stops10h 35m

$253

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 1/15

3:39 pm-9:59 pm

1 stop5h 20m

Harlingen Valley Intl

Mon 1/19

5:25 pm-11:41 pm

1 stop7h 16m

$297

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 1/15

7:50 am-2:46 pm

1 stop5h 56m

Harlingen Valley Intl

Mon 1/19

6:02 am-9:55 am

1 stop4h 53m

$311

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sat 1/24

1:30 pm-9:59 pm

1 stop7h 29m

Harlingen Valley Intl

Tue 1/27

5:25 pm-10:06 pm

1 stop5h 41m

$312

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 2/18

8:09 am-2:12 pm

1 stop5h 03m

Harlingen Valley Intl

Sun 2/22

6:00 am-9:30 am

1 stop4h 30m

$319

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 2/18

8:09 am-2:12 pm

1 stop5h 03m

Harlingen Valley Intl

Sun 2/22

6:00 am-9:30 am

1 stop4h 30m

$320

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sat 1/24

3:39 pm-9:59 pm

1 stop5h 20m

Harlingen Valley Intl

Tue 1/27

9:20 am-2:24 pm

1 stop6h 04m

$327

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sun 2/15

4:50 pm-10:52 pm

1 stop5h 02m

Harlingen Valley Intl

Fri 2/20

6:00 am-9:30 am

1 stop4h 30m

$328

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 October is, on average, the cheapest month to fly to Harlingen, Texas from Denver, with most prices found around $259. If you are unable to visit Harlingen, Texas during the month of October, then departing from Denver during the month February is also very affordable. Most momondo users find prices during this month for around $273.

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 at noon are often more expensive with an average ticket price of $362.

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?

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

Fastest flight time

4h 40m

Direct flights

None
The fastest flight from Denver to Harlingen, Texas takes 4h 40m
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 40m.

  • 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
7.9
4,253 reviews
Search Southwest flights
American AirlinesPriceFrom $232Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
United AirlinesPriceFrom $294Free CancellationRating
7.4
9,095 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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