$197 Find Cheap Flights from Harlingen to Colorado

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Harlingen to Colorado departing on 8/30. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to Colorado, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to Colorado, as well as popular online travel agencies
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Cheap Flights from Harlingen to Colorado

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Denver
Denver1 stop$197
Denver
Denver1 stop$197

Book Cheap Harlingen to Colorado Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to Colorado that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Harlingen to Colorado

Sat, Aug 30 - Wed, Sep 3
American Airlines Logo
6:30 pm - 10:15 pmHRL-DEN
4h 45m1 stop
American Airlines Logo
5:06 pm - 10:57 pmDEN-HRL
4h 51m1 stop
$197American Airlines
Find Deal
Sat, Aug 30 - Wed, Sep 3
American Airlines Logo
6:30 pm - 10:15 pmHRL-DEN
4h 45m1 stop
American Airlines Logo
7:20 am - 2:19 pmDEN-HRL
5h 59m1 stop
$213American Airlines
Find Deal
Tue, Aug 26 - Tue, Sep 2
Southwest Logo
7:25 am - 12:15 pmHRL-DEN
5h 50m1 stop
Southwest Logo
7:00 am - 1:35 pmDEN-HRL
5h 35m1 stop
$227Southwest
Find Deal
Sat, Sep 6 - Tue, Sep 16
American Airlines Logo
10:11 am - 4:18 pmHRL-COS
7h 07m1 stop
American Airlines Logo
6:02 am - 2:19 pmCOS-HRL
7h 17m1 stop
$227American Airlines
Find Deal
Wed, Sep 3 - Sun, Sep 7
Southwest Logo
3:55 pm - 10:20 pmHRL-DEN
7h 25m1 stop
Southwest Logo
7:30 am - 3:25 pmDEN-HRL
6h 55m1 stop
$228Southwest
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Fri, Nov 14 - Sun, Nov 16
Southwest Logo
9:35 am - 4:05 pmHRL-DEN
7h 30m2 stops
Southwest Logo
1:30 pm - 7:25 pmDEN-HRL
4h 55m1 stop
$233Southwest
Find Deal
Wed, Sep 10 - Tue, Sep 16
United Airlines Logo
5:20 pm - 11:50 pmHRL-COS
7h 30m2 stops
United Airlines Logo
7:40 am - 4:02 pmCOS-HRL
7h 22m1 stop
$256United Airlines
Find Deal
Tue, Dec 9 - Fri, Dec 26
United Airlines Logo
5:00 pm - 11:30 pmHRL-DEN
7h 30m1 stop
United Airlines Logo
5:00 am - 11:13 amDEN-HRL
5h 13m1 stop
$337United Airlines
Find Deal
Fri, Dec 12 - Tue, Dec 30
Delta Logo
3:00 pm - 10:30 pmHRL-DEN
8h 30m1 stop
Delta Logo
6:00 am - 2:36 pmDEN-HRL
7h 36m1 stop
$349Delta
Find Deal
Mon, Dec 29 - Fri, Jan 2
Sun Country Air Logo
11:13 am - 9:08 amHRL-DEN
22h 55m1 stop
Sun Country Air Logo
5:56 pm - 10:02 amDEN-HRL
15h 06m1 stop
$385Sun Country Air
Find Deal
Booking Insights

KAYAK's insights & trends for Harlingen to Colorado flights

Get data-powered insights and trends into flights from Harlingen to Colorado to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest Harlingen to Colorado flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Harlingen to Colorado.

The cheapest ticket to Colorado from Harlingen found in the last 72 hours was to Denver, at $663 round-trip. The most popular route is from Harlingen (HRL) to Denver (DEN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $663.

What is the cheapest month to fly from Harlingen to Colorado?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Harlingen to Colorado, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Harlingen to Colorado is September, when tickets cost $243 (return) on average. On the other hand, the most expensive months are March and June, when the average cost of round-trip tickets is $475 and $425 respectively.

What’s the cheapest day of the week to fly from Harlingen to Colorado?

The average price of all round-trip flights from Harlingen to Colorado clicked on KAYAK for each day over the last 12 months.

When flying from Harlingen to Colorado, you should consider leaving on a Wednesday and avoid Sundays if you are looking for the best rates. For your return to Harlingen, you’ll find the best rates on Tuesdays and the most expensive ones on Mondays.


Good to know

Low seasonApril
Cheapest flight$197
Best time to beat the crowds with an average 6% drop in price.
Most popular time to fly with an average 11% increase in price.
Flight from Harlingen to Denver

FAQs - booking Colorado flights

  • How does KAYAK find such low prices on flights from Harlingen to Colorado?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Harlingen to Colorado.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Harlingen to Colorado?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Harlingen to Colorado is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Harlingen to Colorado?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Harlingen to Colorado with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Harlingen to Colorado?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from Harlingen to Colorado up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Colorado?

    The cheapest time of day to fly to Colorado is generally at night, when round-trip flights cost $308 on average. The most expensive time of day to fly to Colorado is generally in the morning, which is peak travel time and where the average cost of a ticket is $343.

Reviews of the top airlines flying from Harlingen to Colorado

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to Colorado. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Harlingen to Colorado? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
SouthwestOverall score based on 4241 reviews
7.0Food
7.5Entertainment
8.1Boarding
8.6Crew
8.0Comfort
Airline reviews

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

2.0 MediocreAnonymous, Jul 2025AUS - RDU
Read more Southwest reviews

southwest just starting charging for luggage. hadnt realized it until it was too late. now out $70 when i couldve bought a carry on if i wouldve known. free bags was one of the only reasons i chose southwest over another airline (the other being no assigned seats, which is apparently also being changed). stupid business decision. wont be flying southwest anymore.

The Southwest employees (all two of them) were very nice and cheerful despite the fact the line to self-check a bag (simply drop it off) was hundreds of people long. Thank God I arrived early to the airport because I stood in this line for at least an hour. Once on the flight that had been delayed by an hour, we had no Wi-Fi and thus no entertainment. Finally, I hope the investor strong arm tactics against Southwest pay off in a short-term windfall to your C-Suite because the rest of you are screwed. I have been a faithful Southwest customer for 15 years due to everything you just got rid of. I'm flying to Idaho and Washington in October, both places I used to simply book with Southwest without a second thought now with Frontier (Washington) and United (Idaho) because they offer everything the "new" Southwest does but cheaper and at better times, destinations, etc. This really makes me sad...

Flights delayed by 4-6 hours. Boarding was a mess and unclear. Bags were not at arrival airport and had never even been put on the plane. No idea when I’ll get them. Don’t fly into Denver!

Southwest is typically delayed, and it gets wearisome. It is no longer a discount airline and you get way less than you pay for when it comes to comfort and Ce.

We sat on the plane on the tarmac for 4 hours.

Flight crew and cabin crew were great. I had to rearrange flights because my original flight was 3hrs delayed for weather, the rub is the flight I moved to boarded on time then we sat at the gate for 2 hours because scheduling stole our first officer for another flight, TWICE. Then our actual FO was an hour delayed. To make it worse my original flight went from a 3 hour delay to departing 15min EARLY. Just poor scheduling operations all around.

Bring back peanuts Take our drink orders when were all seated, especially after you switch to assigned seating.

I’ve always loved Southwest. No issues at all. I was flying standby and the gate agent was extremely friendly and helpful. Boarding was smooth and I was able to get a window seat in the emergency exit row. Crew was fantastic! They were very professional and accommodating. We had to divert from our destination due to weather but the flight crew kept everyone at ease and informed us of all pertinent information. Excellent flight

Plz don't take away free bags and free seating

After a 3 hour layover in Denver my flight was delayed over 5 hours! No explanation; no assistance; no offer to provide compensation; no one at Southwest was willing to offer any assistance. 8 hours in the Denver airport - ridiculous!

Very poor delay in dfw was really bad n long

Because of rescheduling, they had to put me on a flight that didn't go through Dallas

The flight got delayed 2.5 hrs due to a maintenance issue that cause a domino effect. American should have spare planes for when something like this happens.

Terrible. Cancelled my original flight. It made getting a boarding pass difficult. The AA employee (in a loud voice, so everyone around could hear) griped at me for not getting a boarding pass 24 hours before. I asked how I was supposed to do that when I had no idea what flight I was going to be on. She said (loudly), “Talk to AA customer service, not me!” I could certainly tell serving customers was not important to her. Our new flight was set to a completely different city. We had to change our rental car, and the price went way up. It took 2-1/2 hours to get checked in. By then our new flight had left. We ended up on stand by and had to split up the family to get to our destination. It cost us the whole first day of the trip. AA needs to employ people who actually care about doing a good job. I suppose those people are getting harder to find, but atleast try.

Loved the staff, boarding and drink options! Wish the comfort of the seat could have been better nevertheless

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

At the beginning of the flight there was some turbulence and the announcement was made that there would be no beverage service. The turbulence only last about 5 minutes then it was smooth sailing. I noticed that first class got their service, but the rest of us did not.

Update departure times in a more timely manner. We are not boarding on time if the plane isn’t arriving until after our scheduled departure time.

Update.us on flight information in a more timely manner. Don’t say we are boarding on time ten minutes before the boarding time when the aircraft isn’t arriving for another forty minutes.

Took off on time and successfully avoided weather that looked to be a problem along the way

Everything you need to know for your flight from Harlingen to Colorado

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