What is the cheapest airline that flies from Harlingen Valley Intl to Colorado?

Southwest, American Airlines, and United Airlines are the most popular carriers operating from Harlingen Valley Intl to Colorado

What airlines fly to Colorado?

American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to Colorado from Harlingen according to our data. American Airlines is the first choice among our users, with 54% of people opting to fly with this airline when traveling to Colorado. Keep in mind that there are 4 different airlines that fly to Colorado on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Colorado?

Prices for flights from Harlingen Valley Intl Airport to Colorado refresh daily.

How many operators does momondo search for flights from Harlingen Valley Intl Airport to Colorado?

The number of operators available for flights from Harlingen Valley Intl Airport to Colorado is 3 as of April 2026.

How old do you have to be to fly from Harlingen Valley Intl Airport to Colorado?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to Colorado.

What documentation or ID do you need to fly to Colorado?

The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$122 Cheap Flights from Harlingen to Colorado in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Harlingen to Colorado

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:35 pm - 10:20 pm

HRL

DEN

7h 45m

1 stop

10:50 am - 4:00 pm

DEN

HRL

4h 10m

1 stop

$218Southwest

Sat, May 30 - Wed, Jun 3

7:00 am - 12:16 pm

HRL

DEN

6h 16m

1 stop

1:30 pm - 8:00 pm

DEN

HRL

5h 30m

1 stop

$238United Airlines

Fri, May 8 - Tue, May 12

8:04 pm - 11:55 pm

HRL

DEN

4h 51m

1 stop

6:10 pm - 12:14 am

DEN

HRL

5h 04m

1 stop

$242American Airlines

Fri, May 29 - Tue, Jun 2

3:35 pm - 10:20 pm

HRL

DEN

7h 45m

1 stop

4:25 pm - 10:40 pm

DEN

HRL

5h 15m

1 stop

$243Southwest

Sat, May 30 - Sat, Jun 6

2:10 pm - 7:40 pm

HRL

DEN

6h 30m

2 stops

5:45 am - 1:30 pm

DEN

HRL

6h 45m

1 stop

$248Southwest

Tue, Jul 7 - Tue, Jul 14

6:30 pm - 12:15 am

HRL

DEN

6h 45m

1 stop

5:00 am - 10:00 am

DEN

HRL

4h 00m

1 stop

$261Southwest

Mon, Jun 8 - Mon, Jun 15

8:03 pm - 11:32 pm

HRL

COS

4h 29m

1 stop

5:13 pm - 10:51 pm

COS

HRL

4h 38m

1 stop

$265American Airlines

Wed, May 6 - Sun, May 10

6:00 am - 12:19 pm

HRL

DEN

7h 19m

1 stop

1:19 pm - 7:22 pm

DEN

HRL

5h 03m

1 stop

$265American Airlines

Tue, May 5 - Fri, May 8

5:15 am - 11:09 am

HRL

DEN

6h 54m

1 stop

4:20 pm - 9:52 pm

DEN

HRL

4h 32m

1 stop

$268United Airlines

Mon, Sep 21 - Fri, Sep 25

12:45 pm - 7:30 pm

HRL

DEN

7h 45m

2 stops

6:10 am - 1:55 pm

DEN

HRL

6h 45m

1 stop

$270Southwest

Wed, May 6 - Sun, May 10

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

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

Trusted and free

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

Price Alerts

Not ready to book? to track prices.

Search flight deals

Southwest flights from Harlingen to Colorado

Our best Southwest deals on Harlingen to Colorado flight tickets

Southwest

May 30

HRL3:35 pmHarlingen Valley Intl

7h 45m

1 stop

DEN10:20 pmDenver Intl

Jun 3

DEN10:50 amDenver Intl

4h 10m

1 stop

HRL4:00 pmHarlingen Valley Intl

$218

Southwest

May 30

HRL3:35 pmHarlingen Valley Intl

7h 45m

1 stop

DEN10:20 pmDenver Intl

Jun 6

DEN4:25 pmDenver Intl

5h 15m

1 stop

HRL10:40 pmHarlingen Valley Intl

$243

Southwest

Jul 7

HRL2:10 pmHarlingen Valley Intl

6h 30m

2 stops

DEN7:40 pmDenver Intl

Jul 14

DEN5:45 amDenver Intl

6h 45m

1 stop

HRL1:30 pmHarlingen Valley Intl

$248

United Airlines flights from Harlingen to Colorado

Our best United Airlines deals on Harlingen to Colorado flight tickets

United Airlines

May 8

HRL7:00 amHarlingen Valley Intl

6h 16m

1 stop

DEN12:16 pmDenver Intl

May 12

DEN1:30 pmDenver Intl

5h 30m

1 stop

HRL8:00 pmHarlingen Valley Intl

$238

United Airlines

Sep 21

HRL5:15 amHarlingen Valley Intl

6h 54m

1 stop

DEN11:09 amDenver Intl

Sep 25

DEN4:20 pmDenver Intl

4h 32m

1 stop

HRL9:52 pmHarlingen Valley Intl

$268

United Airlines

May 12

HRL7:00 amHarlingen Valley Intl

5h 36m

1 stop

DEN11:36 amDenver Intl

May 13

DEN1:30 pmDenver Intl

7h 29m

1 stop

HRL9:59 pmHarlingen Valley Intl

$301

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 5/30

3:35 pm-10:20 pm

1 stop7h 45m

Denver Intl

Wed 6/3

10:50 am-4:00 pm

1 stop4h 10m

$218

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 5/8

7:00 am-12:16 pm

1 stop6h 16m

Denver Intl

Tue 5/12

1:30 pm-8:00 pm

1 stop5h 30m

$238

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Fri 5/29

8:04 pm-11:55 pm

1 stop4h 51m

Denver Intl

Tue 6/2

6:10 pm-12:14 am

1 stop5h 04m

$242

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Sat 5/30

3:35 pm-10:20 pm

1 stop7h 45m

Denver Intl

Sat 6/6

4:25 pm-10:40 pm

1 stop5h 15m

$243

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 7/7

2:10 pm-7:40 pm

2 stops6h 30m

Denver Intl

Tue 7/14

5:45 am-1:30 pm

1 stop6h 45m

$248

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Mon 6/8

6:30 pm-12:15 am

1 stop6h 45m

Denver Intl

Mon 6/15

5:00 am-10:00 am

1 stop4h 00m

$261

Quickest round-trip

HarlingenColorado Springs

HRL - COS

HRLCOS

Harlingen Valley Intl

Wed 5/6

8:03 pm-11:32 pm

1 stop4h 29m

Colorado Springs

Sun 5/10

5:13 pm-10:51 pm

1 stop4h 38m

$265

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Tue 5/5

6:00 am-12:19 pm

1 stop7h 19m

Denver Intl

Fri 5/8

1:19 pm-7:22 pm

1 stop5h 03m

$265

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Mon 9/21

5:15 am-11:09 am

1 stop6h 54m

Denver Intl

Fri 9/25

4:20 pm-9:52 pm

1 stop4h 32m

$268

HarlingenDenver

HRL - DEN

HRLDEN

Harlingen Valley Intl

Wed 5/6

12:45 pm-7:30 pm

2 stops7h 45m

Denver Intl

Sun 5/10

6:10 am-1:55 pm

1 stop6h 45m

$270

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Harlingen to Colorado

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

Prices

Airlines

What is the cheapest month to fly to Colorado?

The month of September is, on average, the cheapest month to fly to Colorado from Harlingen, with most prices found around $206. The month of October is another great option to travel to Colorado, with average flight prices from Harlingen averaging around $258.

What is the cheapest Harlingen Valley Intl to Colorado flight route?

Fly from Harlingen Valley Intl to Denver Intl for the best Harlingen Valley Intl - Colorado flight prices

What cabin class options are available on Harlingen to Colorado flights?

There is only 1 cabin class available to choose from on Harlingen to Colorado flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Harlingen to Colorado flights?

You could potentially save up to 2% on your flight if you consider stops on a Harlingen to Colorado flight.

Cheap Harlingen to Colorado flight deals and tips

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

Fastest flight time	4h 10m
Direct flights	None

The fastest flight from Harlingen to Colorado takes 4h 10m

There are no direct flights from Harlingen to Colorado. There are no popular flight routes from Harlingen to Colorado.

Search flight deals

Frequently asked questions about flying from Harlingen to Colorado

When did momondo last update prices for flights from Harlingen Valley Intl Airport to Colorado?
Prices for flights from Harlingen Valley Intl Airport to Colorado refresh daily.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Colorado?
The number of operators available for flights from Harlingen Valley Intl Airport to Colorado is 3 as of April 2026.
How old do you have to be to fly from Harlingen Valley Intl Airport to Colorado?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Harlingen Valley Intl Airport to Colorado.
What documentation or ID do you need to fly to Colorado?
The necessary travel and health documents for your Colorado trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
What is the most popular plane model from Harlingen to Colorado?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Harlingen to Colorado is Embraer 175 (Enhanced Winglets) (100.00% of total bookings).

Best airlines flying from Harlingen to Colorado

Compare and see reviews for airlines that fly from Harlingen to Colorado with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $196	Free Cancellation	Rating 8.0 4,332 reviews	Search Southwest flights
American Airlines	PriceFrom $196	Free Cancellation	Rating 7.1 11,666 reviews	Search American Airlines flights
United Airlines	PriceFrom $276	Free Cancellation	Rating 7.4 9,643 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Harlingen to Colorado?

Finding the right flight to Colorado from Harlingen is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Colorado quick and easy, saving you time and money.

Can I find flights from Harlingen to Colorado with flexible booking policies on momondo?

Flights from Harlingen to Colorado with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Harlingen to Colorado?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Colorado from Harlingen.

I’m not ready to book a flight from Harlingen to Colorado right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Harlingen to Colorado now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Colorado and let you know when they change.