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$130+ Cheap flights from Harlingen, TX (HRL) to Colorado

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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
HRL — DEN
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
1 adult, Economy
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Find flight deals from Harlingen to Colorado

Cheapest flights from Harlingen to Colorado
Explore the most affordable flight options available from Harlingen to Colorado. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 16, 2025.

This Southwest deal was found by Cheapflights users on 10/15. 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.
Thu 11/271:20 pmHRL - DEN
1 stop4h 50mSouthwest
Wed 12/39:25 amDEN - HRL
1 stop6h 40mSouthwest
Deal found 10/15$200
This American Airlines deal was found by Cheapflights users on 10/15. 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.
Wed 11/125:40 amHRL - COS
1 stop5h 13mAmerican Airlines
Wed 11/1912:45 pmCOS - HRL
1 stop4h 25mAmerican Airlines
Deal found 10/15$207
This Southwest deal was found by Cheapflights users on 10/15. 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 12/26:30 pmHRL - DEN
1 stop4h 45mSouthwest
Mon 12/81:05 pmDEN - HRL
1 stop7h 00mSouthwest
Deal found 10/15$207
This Delta deal was found by Cheapflights users on 10/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/133:39 pmHRL - DEN
1 stop8h 35mDelta
Thu 11/205:45 amDEN - HRL
1 stop7h 58mDelta
Deal found 10/15$217
This Southwest deal was found by Cheapflights users on 10/15. 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.
Mon 12/18:35 pmHRL - DEN
1 stop4h 40mSouthwest
Wed 12/39:25 amDEN - HRL
1 stop6h 40mSouthwest
Deal found 10/15$228
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/223:39 pmHRL - DEN
1 stop8h 25mDelta
Fri 10/316:05 amDEN - HRL
1 stop7h 38mDelta
Deal found 10/14$248
This Southwest deal was found by Cheapflights users on 10/15. 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.
Wed 11/268:35 pmHRL - DEN
1 stop4h 40mSouthwest
Wed 12/39:25 amDEN - HRL
1 stop6h 40mSouthwest
Deal found 10/15$252
This Delta deal was found by Cheapflights users on 10/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/73:39 pmHRL - DEN
1 stop8h 25mDelta
Sun 11/95:45 amDEN - HRL
1 stop7h 58mDelta
Deal found 10/14$259
This United Airlines deal was found by Cheapflights users on 10/15. 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.
Wed 11/125:00 pmHRL - COS
2 stops7h 59mUnited Airlines
Wed 11/1912:54 pmCOS - HRL
2 stops8h 00mUnited Airlines
Deal found 10/15$265
This Southwest deal was found by Cheapflights users on 10/13. 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.
Thu 11/277:10 amHRL - DEN
1 stop6h 45mSouthwest
Mon 12/16:15 pmDEN - HRL
1 stop4h 40mSouthwest
Deal found 10/13$270
This American Airlines deal was found by Cheapflights users on 10/15. 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.
Thu 10/305:23 amHRL - COS
1 stop5h 24mAmerican Airlines
Mon 11/35:17 pmCOS - HRL
1 stop4h 57mAmerican Airlines
Deal found 10/15$279
This American Airlines deal was found by Cheapflights users on 10/15. 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.
Sun 10/195:23 amHRL - COS
1 stop5h 24mAmerican Airlines
Tue 10/215:01 pmCOS - HRL
1 stop5h 03mAmerican Airlines
Deal found 10/15$288

Cheap flight deals from Harlingen to Colorado

Keep the following information in mind while searching for Harlingen to Colorado flight deals. Data was last updated October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$200
(Southwest)

One-way from

$130
(Southwest)

Popular in

June

Cheapest in

September

Average price

$256
Provider with most accurate pricing for Harlingen Valley Intl-Denver Intl flight deals.
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Provider most trusted by Cheapflights users for Harlingen Valley Intl-Denver Intl flights.
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From Harlingen Valley Intl to Colorado
Search Deals
One-way flight from Harlingen Valley Intl to Colorado
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($82 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($14 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Harlingen to Colorado 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 October 16, 2025.
Use the filters below to find and compare flights from Harlingen to Colorado that are best for you.

Fly from

Harlingen

Fly to

Colorado

Route

Depart

Return

Price

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 11/27

5:50 am-1:10 pm

2 stops8h 20m

Denver Intl

Wed 12/3

12:10 pm-6:00 pm

1 stop4h 50m

$205

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 11/13

3:39 pm-11:14 pm

1 stop8h 35m

Denver Intl

Thu 11/20

5:45 am-2:43 pm

1 stop7h 58m

$217

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 4/7

3:00 pm-10:36 pm

1 stop8h 36m

Denver Intl

Wed 4/8

6:10 am-2:29 pm

1 stop7h 19m

$259

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 11/13

6:25 pm-11:10 pm

1 stop5h 45m

Denver Intl

Mon 11/17

9:15 am-5:05 pm

1 stop6h 50m

$262

HarlingenColorado Springs

HRL - COS

HRLCOS

Harlingen Valley Intl

Wed 11/12

5:00 pm-11:59 pm

2 stops7h 59m

Colorado Springs

Wed 11/19

12:54 pm-9:54 pm

2 stops8h 00m

$265

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Thu 11/13

8:05 pm-12:10 am

1 stop5h 05m

Denver Intl

Thu 11/20

3:05 pm-9:55 pm

2 stops5h 50m

$282

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 11/7

9:35 am-4:10 pm

2 stops7h 35m

Denver Intl

Sun 11/9

3:55 pm-10:30 pm

1 stop5h 35m

$294

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 11/26

12:22 pm-8:09 am

1 stop20h 47m

Denver Intl

Fri 11/28

6:00 am-10:31 am

1 stop27h 31m

$303

HarlingenColorado Springs

HRL - COS

HRLCOS

Harlingen Valley Intl

Tue 2/24

12:11 pm-3:44 pm

1 stop4h 33m

Colorado Springs

Sat 2/28

5:06 pm-12:01 am

1 stop5h 55m

$308

HarlingenColorado Springs

HRL - COS

HRLCOS

Harlingen Valley Intl

Thu 10/30

7:00 am-11:27 am

1 stop5h 27m

Colorado Springs

Mon 11/3

10:34 am-9:54 pm

2 stops10h 20m

$409

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/16

Showing 1-10 of 20 results
1
2

Best time to book a flight from Harlingen to Colorado

Have a flexible travel schedule? Discover the best time to fly to Colorado 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 Colorado

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

Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Colorado (average of $169). Flying from Harlingen, Texas to Colorado 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 CO?

Find hourly flight availability from Harlingen to Colorado. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 16, 2025.

One of the essential ways to save on airfare from Harlingen, Texas to Colorado is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 53% on airfare.

Reviews of airlines servicing Colorado

Get insights into the airlines that provide service to Colorado. 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 Colorado. Reviews last updated October 16, 2025.
Get a feel of what it's like to fly with Southwest, United Airlines, and American Airlines from Harlingen to Colorado by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
Southwest
8.0
Very good
4,241 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
United Airlines
7.4
Good
8,982 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.
American Airlines
7.2
Good
11,043 reviews
Southwest
8.0
Very good
4,241 reviews

Food

7.0

Comfort

8.0

Overall

8.0

Crew

8.6

Boarding

8.1

Entertainment

7.5

Reviews

1 / 20
8.0
Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Related info for your journey

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

  • What airport do you fly from for flights from Harlingen to Colorado?

    Harlingen Valley Intl (HRL), located 3.7 mi from the city center, is the airport you fly out of when you book flights from Harlingen to Colorado.

  • How long is the flight from Harlingen, Texas to Colorado?

    For as low as $265, Southwest can have you in Colorado from Harlingen, Texas in 7h 59m. There are 960 mi between Harlingen, Texas and Colorado. This flight may include one or multiple stops.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Harlingen to Colorado 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 Colorado?

    Currently, August is the cheapest month in which you can book a flight from Harlingen, Texas to Colorado (average of $169). Flying from Harlingen, Texas to Colorado 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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Alternative routes for Harlingen to Colorado

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

Discover the top 3 airlines that operate flights from Harlingen to Colorado. 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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$196Average$316FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$199Average$348FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$302Average$475FlexibilityNo cancel feeOn-time69%

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