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Harlingen

$130+ Cheap flights from Denver to Harlingen, TX (DEN - HRL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/11. Fares are subject to change and may not be available on all flights or dates of travel.
DEN — HRL
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
1 adult, Economy
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Cheap flight deals from Denver to Harlingen

Discover tips and strategies to find the most affordable flight options for your journey from Denver (DEN) to Harlingen (HRL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated June 30, 2025.

Round-trip from

$224
(American Airlines)

One-way from

$130
(Southwest)

Popular in

June

Cheapest in

February

Average price

$379
From Denver Intl to Harlingen Valley Intl
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One-way flight from Denver Intl to Harlingen Valley Intl
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Highest demand for flights based on searches. 3% potential increase in price ($10 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Denver to Harlingen

Cheapest flights from Denver to Harlingen
Explore the most affordable flight options available from Denver to Harlingen. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2910:26 amDEN - HRL
1 stop4h 31mAmerican Airlines
Tue 8/57:59 pmHRL - DEN
1 stop4h 45mAmerican Airlines
Deal found 6/29$224
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/2912:15 pmDEN - HRL
1 stop4h 15mSouthwest
Tue 8/53:55 pmHRL - DEN
2 stops7h 10mSouthwest
Deal found 6/29$229
This United Airlines deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/298:15 amDEN - HRL
2 stops10h 20mUnited Airlines
Sun 8/35:20 pmHRL - DEN
1 stop7h 18mUnited Airlines
Deal found 6/30$426

Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated June 30, 2025.
Use the filters below to find and compare flights from Denver to Harlingen that are best for you.

Fly from

Denver

Fly to

Harlingen

Route

Depart

Return

Price

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 7/29

10:26 am-3:57 pm

1 stop4h 31m

Harlingen Valley Intl

Tue 8/5

7:59 pm-11:44 pm

1 stop4h 45m

$224

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 7/29

12:15 pm-5:30 pm

1 stop4h 15m

Harlingen Valley Intl

Tue 8/5

3:55 pm-10:05 pm

2 stops7h 10m

$229

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 7/29

8:15 am-7:35 pm

2 stops10h 20m

Harlingen Valley Intl

Sun 8/3

5:20 pm-11:38 pm

1 stop7h 18m

$426

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Fri 7/11

10:10 am-4:30 pm

1 stop5h 20m

$130

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Tue 7/15

6:35 pm-12:06 am

1 stop4h 31m

$164

DenverHarlingen

DEN - HRL

DENHRL

Denver Intl

Thu 7/24

1:49 pm-9:50 pm

1 stop7h 01m

$244

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/28

Best time to book a flight from Denver to Harlingen

Have a flexible travel schedule? Discover the best time to fly to Harlingen from Denver with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Denver to Harlingen

What is the cheapest month to book a flight from Denver to Harlingen, Texas?

Currently, April is the cheapest month in which you can book a flight from Denver to Harlingen, Texas (average of $267). Flying from Denver to Harlingen, Texas in June is currently the most expensive (average of $390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from DEN to HRL?

Find hourly flight availability from Denver to Harlingen. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 30, 2025.

It’s typically best to fly out from Denver to Harlingen, Texas in the afternoon. Doing so could potentially save you 24% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Harlingen

Get insights into the airlines that provide service to Harlingen. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Harlingen. Reviews last updated June 30, 2025.
Read through reviews of airlines operating flights from Denver to Harlingen, such as Southwest, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,278 reviews

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
Southwest
8.0
Very good
4,278 reviews
Southwest
8.0
Very good
4,278 reviews

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
United Airlines
7.4
Good
8,852 reviews
Southwest
8.0
Very good
4,278 reviews

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,278 reviews

Boarding

8.2

Entertainment

7.6

Overall

8.0

Comfort

8.0

Food

7.0

Crew

8.6

Reviews

1 / 20
8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Related info for your journey

Find useful and relevant information for your journey from Denver to Harlingen. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines flying from Denver to Harlingen, Texas round-trip?

    American Airlines, at $224, was found to be the cheapest airline from Denver to Harlingen, Texas.Alternate airlines to your destination round-trip include Southwest and United Airlines. American Airlines is currently priced 32% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from Denver to Harlingen, Texas one-way?

    For one-way options, check prices for Southwest. According to our data, you can fly for as low as $130. Users have also found prices from $164 and $244 on American Airlines and United Airlines, respectively.

  • Can I find deals for flights from Denver to Harlingen that include hotel bookings?

    Yes. In addition to deals on Denver to Harlingen flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Denver to Harlingen?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Denver to Harlingen.

  • Can I find deals for business class flights from Denver to Harlingen?

    Yes. Cheapflights offers flight deals from Denver to Harlingen by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Denver to Harlingen, Texas?

    Currently, April is the cheapest month in which you can book a flight from Denver to Harlingen, Texas (average of $267). Flying from Denver to Harlingen, Texas in June is currently the most expensive (average of $390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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Alternative routes for Denver to Harlingen

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Denver to Harlingen

Discover the top 3 airlines that operate flights from Denver to Harlingen. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$351FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$228Average$303FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$266Average$348FlexibilityNo cancel feeOn-time69%

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