Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Harlingen from $197

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 6/6. 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

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Denver to Harlingen

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
3:05 pm - 8:45 pm
DEN
-
HRL
4h 40m
1 stop
Southwest Logo
5:00 pm - 11:05 pm
HRL
-
DEN
7h 05m
1 stop
$197Southwest
Sat, Jun 6 - Tue, Jun 16
Southwest Logo
7:05 am - 2:05 pm
DEN
-
HRL
6h 00m
2 stops
Southwest Logo
5:00 pm - 11:05 pm
HRL
-
DEN
7h 05m
1 stop
$202Southwest
Sat, Jun 6 - Tue, Jun 16
Southwest Logo
6:15 am - 12:25 pm
DEN
-
HRL
5h 10m
1 stop
Southwest Logo
6:15 am - 11:05 am
HRL
-
DEN
5h 50m
1 stop
$207Southwest
Thu, Jun 4 - Tue, Jun 9
Southwest Logo
2:30 pm - 9:40 pm
DEN
-
HRL
6h 10m
1 stop
Southwest Logo
12:45 pm - 7:45 pm
HRL
-
DEN
8h 00m
2 stops
$212Southwest
Thu, Jun 4 - Tue, Jun 9
American Airlines Logo
6:10 pm - 12:14 am
DEN
-
HRL
5h 04m
1 stop
American Airlines Logo
8:04 pm - 11:55 pm
HRL
-
DEN
4h 51m
1 stop
$269American Airlines
Wed, May 27 - Sat, May 30
Southwest Logo
10:20 am - 4:15 pm
DEN
-
HRL
4h 55m
1 stop
Southwest Logo
5:15 am - 9:45 am
HRL
-
DEN
5h 30m
1 stop
$278Southwest
Tue, Jun 16 - Thu, Jun 18
Southwest Logo
5:00 am - 11:00 am
DEN
-
HRL
5h 00m
1 stop
Southwest Logo
5:10 pm - 8:55 pm
HRL
-
DEN
4h 45m
1 stop
$283Southwest
Sun, Jun 7 - Sat, Jun 13
Southwest Logo
2:30 pm - 11:40 pm
DEN
-
HRL
8h 10m
2 stops
Southwest Logo
12:45 pm - 7:45 pm
HRL
-
DEN
8h 00m
2 stops
$308Southwest
Thu, Jun 4 - Tue, Jun 9
Southwest Logo
7:05 am - 2:05 pm
DEN
-
HRL
6h 00m
2 stops
Southwest Logo
2:10 pm - 7:40 pm
HRL
-
DEN
6h 30m
2 stops
$322Southwest
Sat, Jun 6 - Tue, Jun 16
Southwest Logo
3:55 pm - 11:40 pm
DEN
-
HRL
6h 45m
2 stops
Southwest Logo
12:45 pm - 7:45 pm
HRL
-
DEN
8h 00m
2 stops
$328Southwest
Fri, Jun 5 - Tue, Jun 9

United Airlines flights from Denver to Harlingen

Our best United Airlines deals on Denver to Harlingen flight tickets
United Airlines
Aug 29
DEN3:35 pmDenver Intl
5h 09m
1 stop
HRL9:44 pmHarlingen Valley Intl
Sep 2
HRL2:00 pmHarlingen Valley Intl
7h 09m
1 stop
DEN8:09 pmDenver Intl
$359
United Airlines
Aug 29
DEN3:35 pmDenver Intl
5h 09m
1 stop
HRL9:44 pmHarlingen Valley Intl
Sep 2
HRL5:15 amHarlingen Valley Intl
10h 02m
2 stops
DEN2:17 pmDenver Intl
$392
United Airlines
Aug 29
DEN7:40 amDenver Intl
7h 19m
1 stop
HRL3:59 pmHarlingen Valley Intl
Sep 2
HRL1:59 pmHarlingen Valley Intl
7h 10m
1 stop
DEN8:09 pmDenver Intl
$399

American Airlines flights from Denver to Harlingen

Our best American Airlines deals on Denver to Harlingen flight tickets
American Airlines
May 27
DEN6:10 pmDenver Intl
5h 04m
1 stop
HRL12:14 amHarlingen Valley Intl
May 30
HRL8:04 pmHarlingen Valley Intl
4h 51m
1 stop
DEN11:55 pmDenver Intl
$269
American Airlines
May 27
DEN12:39 pmDenver Intl
5h 55m
1 stop
HRL7:34 pmHarlingen Valley Intl
May 30
HRL8:04 pmHarlingen Valley Intl
4h 51m
1 stop
DEN11:55 pmDenver Intl
$365
American Airlines
Sep 12
DEN12:39 pmDenver Intl
5h 57m
1 stop
HRL7:36 pmHarlingen Valley Intl
Sep 13
HRL4:58 pmHarlingen Valley Intl
5h 40m
1 stop
DEN9:38 pmDenver Intl
$369

momondo Fare Finder

 
Customize your flight search to find flights from Denver to Harlingen 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 May 10, 2026.
Use the filters below to find and compare flights from Denver to Harlingen that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sat 6/6

3:05 pm-8:45 pm

1 stop4h 40m

Harlingen Valley Intl

Tue 6/16

5:00 pm-11:05 pm

1 stop7h 05m

$197

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sat 6/6

7:05 am-2:05 pm

2 stops6h 00m

Harlingen Valley Intl

Tue 6/16

5:00 pm-11:05 pm

1 stop7h 05m

$202

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 6/4

6:15 am-12:25 pm

1 stop5h 10m

Harlingen Valley Intl

Tue 6/9

6:15 am-11:05 am

1 stop5h 50m

$207

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 6/4

2:30 pm-9:40 pm

1 stop6h 10m

Harlingen Valley Intl

Tue 6/9

12:45 pm-7:45 pm

2 stops8h 00m

$212

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Wed 5/27

6:10 pm-12:14 am

1 stop5h 04m

Harlingen Valley Intl

Sat 5/30

8:04 pm-11:55 pm

1 stop4h 51m

$269

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 6/16

10:20 am-4:15 pm

1 stop4h 55m

Harlingen Valley Intl

Thu 6/18

5:15 am-9:45 am

1 stop5h 30m

$278
Quickest round-trip

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sun 6/7

5:00 am-11:00 am

1 stop5h 00m

Harlingen Valley Intl

Sat 6/13

5:10 pm-8:55 pm

1 stop4h 45m

$283

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 6/4

2:30 pm-11:40 pm

2 stops8h 10m

Harlingen Valley Intl

Tue 6/9

12:45 pm-7:45 pm

2 stops8h 00m

$308

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Sat 6/6

7:05 am-2:05 pm

2 stops6h 00m

Harlingen Valley Intl

Tue 6/16

2:10 pm-7:40 pm

2 stops6h 30m

$322

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Fri 6/5

3:55 pm-11:40 pm

2 stops6h 45m

Harlingen Valley Intl

Tue 6/9

12:45 pm-7:45 pm

2 stops8h 00m

$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

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 Denver and Harlingen?

What is the cheapest month to fly to Harlingen?

If you aren’t able to travel during the month of February, then book flights to Harlingen from Denver during August instead. Flights to Harlingen in August, while not as cheap as those in February, still average around $242.

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

How have Denver to Harlingen flight prices changed over time?

When to book flights from Denver to Harlingen

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

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

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

Best Price Found

$476

Fastest flight time

4h 20m

Direct flights

None
The best flight deal from Denver to Harlingen found on momondo in the last 72 hours is $476
The fastest flight from Denver to Harlingen takes 4h 20m
There are no direct flights from Denver to Harlingen. There are no popular flight routes from Denver to Harlingen.
Search flight deals

Frequently asked questions about flying from Denver to Harlingen

  • 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 20m.

  • 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?

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

Best airlines flying from Denver to Harlingen

Compare and see reviews for airlines that fly from Denver to Harlingen with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $199Free CancellationRating
8.0
4,304 reviews
Search Southwest flights
American AirlinesPriceFrom $252Free CancellationRating
7.1
11,667 reviews
Search American Airlines flights
United AirlinesPriceFrom $266Free CancellationRating
7.4
9,694 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.

An easier way to manage your Harlingen trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 6/9
Tue 6/16
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States