What’s the top layover airport for flights from Harlingen, Texas to Denver?

Houston (IAH) – chosen by Cheapflights users on 50% of 1-stop itineraries from Harlingen, Texas to Denver on Cheapflights.

What’s the fastest layover option from Harlingen, Texas to Denver?

Flights via Houston (HOU) have the shortest average one-way travel time for 1-stop routes: 4h 40m.

What’s the cheapest layover airport for flights from Harlingen, Texas to Denver?

Houston (HOU) is the most affordable 1-stop option, with an average round-trip price of $297.

Which airport typically offers the quickest layover for flights from Harlingen, Texas to Denver?

Flights via Houston (HOU) offer the fastest connection on this route, with an average layover time of 1h 00m.

How long is the flight from Harlingen, Texas to Denver?

Airlines like Southwest and American Airlines fly from Harlingen, Texas to Denver in about 5h 10m. The time it takes to get you to your destination can typically vary by up to 1h 31m. Harlingen, Texas and Denver are separated by a distance of 1024 mi. This flight may include one or multiple stops.

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

Our cheapest airline available from Harlingen, Texas to Denver is Southwest. Our recent data shows that you can find tickets from as low as $196 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $199 and $302 round-trip. Southwest is 43% cheaper than the average price of flights available within the next 90 days to this destination.

In terms of precipitation, rainfall in Denver ranges from 0.5 - 2.3 inches per month. May is typically the wettest month, when rainfall can reach 2.3 in. January is typically the driest time to visit Denver when rainfall is around 0.5 in.

If weather is an important factor for your trip to Denver, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What are the most popular airlines that fly from Harlingen, Texas to Denver?

Consider Southwest, American Airlines or United Airlines when booking your flight. These represent the most popular airlines when flying from Harlingen, Texas to Denver.

Most accurate provider : When it comes to deals on Harlingen, Texas-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Harlingen, Texas-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Harlingen, Texas-Denver flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Harlingen, Texas-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Harlingen, Texas-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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

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

How can I find direct flights from Harlingen to Denver?

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

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

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

$99+ Flights from Harlingen, TX to Denver

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Cheap flight deals from Harlingen to Denver

Cheapest flights from Harlingen to Denver
Explore the most affordable flight options available from Harlingen to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Fri 12/198:11 pmHRL - DEN

1 stop4h 45mAmerican Airlines

Mon 12/226:21 amDEN - HRL

1 stop6h 57mAmerican Airlines

Deal found 12/16

$570

Wed 12/174:02 pmHRL - DEN

1 stop5h 13mAmerican Airlines

Sun 12/216:21 amDEN - HRL

1 stop6h 57mAmerican Airlines

Deal found 12/16

$588

Fri 12/197:00 amHRL - DEN

2 stops26h 34mUnited Airlines

Mon 12/225:00 amDEN - HRL

1 stop5h 13mUnited Airlines

Deal found 12/16

$783

Wed 12/177:00 amHRL - DEN

2 stops12h 42mUnited Airlines

Sun 12/211:25 pmDEN - HRL

1 stop5h 11mUnited Airlines

Deal found 12/16

$920

Best flights from Harlingen to Denver
Discover carefully curated flight deals from Harlingen to Denver that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

Wed 1/76:30 amHRL - DEN

1 stop5h 10mSouthwest

Sun 1/111:20 pmDEN - HRL

1 stop7h 15mSouthwest

Deal found 12/14

$197

Sat 4/1810:05 amHRL - DEN

1 stop6h 41mAmerican Airlines

Wed 4/229:02 amDEN - HRL

1 stop6h 07mAmerican Airlines

Deal found 12/16

$259

Sat 1/2412:10 pmHRL - DEN

1 stop5h 11mUnited Airlines

Tue 1/271:30 pmDEN - HRL

1 stop7h 29mUnited Airlines

Deal found 12/16

$309

Mon 3/305:30 pmHRL - DEN

1 stop6h 35mSouthwest

Mon 4/66:00 amDEN - HRL

1 stop4h 45mSouthwest

Deal found 12/15

$259

Tue 1/63:22 pmHRL - DEN

1 stop6h 31mAmerican Airlines

Fri 1/97:50 amDEN - HRL

1 stop5h 59mAmerican Airlines

Deal found 12/16

$290

Fri 1/165:30 pmHRL - DEN

1 stop5h 45mSouthwest

Mon 1/198:15 amDEN - HRL

2 stops7h 40mSouthwest

Deal found 12/14

$307

Thu 1/16:30 pmHRL - DEN

1 stop4h 45mSouthwest

Sun 1/45:10 amDEN - HRL

1 stop5h 10mSouthwest

Deal found 12/14

$364

Last-minute flights from Harlingen to Denver
Discover last-minute flight deals from Harlingen to Denver. Data last updated December 18, 2025 and is based on user searches.

Wed 12/174:02 pmHRL - DEN

1 stop5h 13mAmerican Airlines

Sun 12/216:21 amDEN - HRL

1 stop6h 57mAmerican Airlines

Deal found 12/16

$588

Fri 12/198:11 pmHRL - DEN

1 stop4h 45mAmerican Airlines

Mon 12/226:21 amDEN - HRL

1 stop6h 57mAmerican Airlines

Deal found 12/16

$570

Sat 1/312:15 pmHRL - DEN

1 stop7h 04mUnited Airlines

Sat 1/107:45 amDEN - HRL

1 stop7h 21mUnited Airlines

Deal found 12/17

$387

Sat 1/38:50 pmHRL - DEN

1 stop4h 35mSouthwest

Sat 1/1012:40 pmDEN - HRL

1 stop5h 20mSouthwest

Deal found 12/17

$537

Sat 1/33:15 pmHRL - DEN

1 stop8h 35mDelta

Sat 1/107:15 amDEN - HRL

1 stop6h 24mDelta

Deal found 12/17

$733

Tue 1/63:22 pmHRL - DEN

1 stop6h 31mAmerican Airlines

Fri 1/97:50 amDEN - HRL

1 stop5h 59mAmerican Airlines

Deal found 12/16

$290

Tue 1/67:00 amHRL - DEN

2 stops12h 17mUnited Airlines

Fri 1/95:01 amDEN - HRL

1 stop5h 25mUnited Airlines

Deal found 12/16

$458

Sat 1/2412:10 pmHRL - DEN

1 stop5h 11mUnited Airlines

Tue 1/271:30 pmDEN - HRL

1 stop7h 29mUnited Airlines

Deal found 12/16

$309

One-way flights from Harlingen to Denver
Search for one-way flight options from Harlingen to Denver. Find affordable one-way fares based on user searches. Data last updated December 18, 2025.

Mon 1/266:44 pmHRL - DEN

1 stop4h 50mAmerican Airlines

Deal found 12/15

$99

Mon 1/266:30 amHRL - DEN

2 stops7h 40mSouthwest

Deal found 12/15

$104

Sat 1/310:12 amHRL - DEN

1 stop4h 43mAmerican Airlines

Deal found 12/17

$391

Sat 1/35:00 amHRL - DEN

2 stops30h 05mUnited Airlines

Deal found 12/17

$511

Find flight deals from Harlingen to Denver

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$197 (Southwest)
One-way from	$99 (American Airlines)
Popular in	June
Cheapest in	September
Average price	$378

Provider with most accurate pricing for Harlingen Valley Intl-Denver Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Harlingen Valley Intl-Denver Intl flights.

Search Deals

From Harlingen Valley Intl to Denver Intl

Search Deals

One-way flight from Harlingen Valley Intl to Denver Intl

Search Deals

Highest demand for flights based on searches. 16% potential increase in price ($66 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 1/7

6:30 am-10:40 am

1 stop5h 10m

Denver Intl

Sun 1/11

1:20 pm-9:35 pm

1 stop7h 15m

$197

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 4/18

10:05 am-3:46 pm

1 stop6h 41m

Denver Intl

Wed 4/22

9:02 am-4:09 pm

1 stop6h 07m

$259

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Mon 3/30

5:30 pm-11:05 pm

1 stop6h 35m

Denver Intl

Mon 4/6

6:00 am-11:45 am

1 stop4h 45m

$259

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 1/6

3:22 pm-8:53 pm

1 stop6h 31m

Denver Intl

Fri 1/9

7:50 am-2:49 pm

1 stop5h 59m

$290

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 1/16

5:30 pm-10:15 pm

1 stop5h 45m

Denver Intl

Mon 1/19

8:15 am-4:55 pm

2 stops7h 40m

$307

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 1/24

12:10 pm-4:21 pm

1 stop5h 11m

Denver Intl

Tue 1/27

1:30 pm-9:59 pm

1 stop7h 29m

$309

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 1/1

6:30 pm-10:15 pm

1 stop4h 45m

Denver Intl

Sun 1/4

5:10 am-11:20 am

1 stop5h 10m

$364

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 1/3

5:34 am-9:40 am

1 stop5h 06m

$391

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 1/3

5:00 am-10:05 am

2 stops30h 05m

$511

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

Compare providers for flights from Harlingen to Denver

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Harlingen to Denver in December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars
Priceline	Price Accuracy1 star	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Harlingen, Texas-Denver flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Harlingen, Texas-Denver flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Harlingen, Texas-Denver flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Harlingen, Texas-Denver flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Harlingen, Texas-Denver flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Harlingen to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Harlingen 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 Harlingen to Denver

Prices

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

Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Denver (average of $169). Flying from Harlingen, Texas to Denver in March is currently the most expensive (average of $258). 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 HRL to DEN?

It’s optimal to fly from Harlingen, Texas to Denver at noon. By choosing this option you can save up to 58% on the cost of your flight, compared to a flight in the afternoon.

Reviews of airlines servicing Denver

Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Harlingen to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Southwest

7.9

Good

4,250 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

United Airlines

7.4

Good

9,091 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

American Airlines

7.2

Good

11,054 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

2.0

Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

Related info for your journey

How long is the flight from Harlingen, Texas to Denver?
Airlines like Southwest and American Airlines fly from Harlingen, Texas to Denver in about 5h 10m. The time it takes to get you to your destination can typically vary by up to 1h 31m. Harlingen, Texas and Denver are separated by a distance of 1024 mi. This flight may include one or multiple stops.
What are the cheapest airlines flying from Harlingen, Texas to Denver round-trip?
Our cheapest airline available from Harlingen, Texas to Denver is Southwest. Our recent data shows that you can find tickets from as low as $196 on this airline. Additional options worth looking into are American Airlines and United Airlines, starting at $199 and $302 round-trip. Southwest is 43% cheaper than the average price of flights available within the next 90 days to this destination.
Can I find deals for flights from Harlingen to Denver that include hotel bookings?
Yes. In addition to deals on Harlingen to Denver flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Harlingen to Denver?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Harlingen to Denver.
Can I find deals for business class flights from Harlingen to Denver?
Yes. Cheapflights offers flight deals from Harlingen to Denver 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 Harlingen, Texas to Denver?
Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Denver (average of $169). Flying from Harlingen, Texas to Denver in March is currently the most expensive (average of $258). 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.

See more FAQs

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Other flights to Denver

Top 3 airlines flying from Harlingen to Denver

Airline	Cheapest	Average	Flexibility	On-time
Southwest	Cheapest$196	Average$297	FlexibilityNo cancel fee	On-time63%
American Airlines	Cheapest$199	Average$378	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$302	Average$366	FlexibilityNo cancel fee	On-time69%

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$99+ Cheap flights from Harlingen, TX to Denver (HRL - DEN)

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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.

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Cheap flight deals from Harlingen to Denver

Cheapest flights from Harlingen to DenverExplore the most affordable flight options available from Harlingen to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Explore the most affordable flight options available from Harlingen to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

Find flight deals from Harlingen to Denver

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Harlingen to Denver that are best for you.

Compare providers for flights from Harlingen to Denver

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Harlingen to Denver in December.

Best time to book a flight from Harlingen to Denver

Have a flexible travel schedule? Discover the best time to fly to Denver from Harlingen with our price prediction graph.

Cheapflights Insights

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

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

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

What’s the top layover airport for flights from Harlingen, Texas to Denver?

What’s the cheapest layover airport for flights from Harlingen, Texas to Denver?

What’s the fastest layover option from Harlingen, Texas to Denver?

Which airport typically offers the quickest layover for flights from Harlingen, Texas to Denver?

Reviews of airlines servicing Denver

Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Harlingen to Denver by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

How long is the flight from Harlingen, Texas to Denver?

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

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

How can I find direct flights from Harlingen to Denver?

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

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

Traveling to a place near Denver?

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Alternative routes for Harlingen to Denver

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Top 3 airlines flying from Harlingen to Denver

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Cheapest flights from Harlingen to Denver
Explore the most affordable flight options available from Harlingen to Denver. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.