HRL - DEN

$159 Find Cheap Flights from Harlingen to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Harlingen to Denver departing on 5/27. 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, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Harlingen to Denver, 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 Denver, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$197
Typical prices: $481-$288
Southwest
Tue 6/23Tue 6/30
HRL - DEN • 1 stop
Cheapest one-way
$159
Typical prices: $194-$201
American Airlines
Wed 5/27
HRL - DEN • 1 stop
Top airlines
Cheapest • from $197 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Harlingen and Denver. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $319 (round-trip)
Shortest trip • 4h 45m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 38% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Denver!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Harlingen to Denver (HRL-DEN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Harlingen to Denver 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 Denver

Tue, Jun 23 - Tue, Jun 30
Southwest Logo
2:10 pm - 6:45 pm
HRL
-
DEN
5h 35m
1 stop
Southwest Logo
7:00 am - 1:30 pm
DEN
-
HRL
5h 30m
1 stop
$197Southwest
Sat, Jun 6 - Sat, Jun 13
Southwest Logo
4:10 pm - 10:35 pm
HRL
-
DEN
7h 25m
1 stop
Southwest Logo
5:25 am - 10:45 am
DEN
-
HRL
4h 20m
1 stop
$231Southwest
Fri, Jul 10 - Wed, Jul 15
Southwest Logo
7:10 am - 1:20 pm
HRL
-
DEN
7h 10m
1 stop
Southwest Logo
5:45 am - 1:30 pm
DEN
-
HRL
6h 45m
1 stop
$250Southwest
Sat, Jun 20 - Tue, Jun 23
Southwest Logo
4:10 pm - 10:35 pm
HRL
-
DEN
7h 25m
1 stop
Southwest Logo
5:45 am - 1:30 pm
DEN
-
HRL
6h 45m
1 stop
$257Southwest
Tue, Jun 23 - Tue, Jun 30
Southwest Logo
2:10 pm - 7:40 pm
HRL
-
DEN
6h 30m
2 stops
Southwest Logo
7:00 am - 1:30 pm
DEN
-
HRL
5h 30m
1 stop
$262Southwest
Wed, May 13 - Sun, May 17
Southwest Logo
10:45 am - 4:20 pm
HRL
-
DEN
6h 35m
1 stop
Southwest Logo
6:25 am - 12:40 pm
DEN
-
HRL
5h 15m
1 stop
$265Southwest
Tue, May 12 - Sat, May 16
Southwest Logo
7:10 am - 11:50 am
HRL
-
DEN
5h 40m
1 stop
Southwest Logo
10:45 am - 9:35 pm
DEN
-
HRL
9h 50m
1 stop
$270Southwest
Sat, Jul 4 - Sat, Jul 11
Southwest Logo
7:15 am - 10:45 am
HRL
-
DEN
4h 30m
1 stop
Southwest Logo
5:30 am - 10:45 am
DEN
-
HRL
4h 15m
1 stop
$280Southwest
Sat, Jun 20 - Tue, Jun 23
Southwest Logo
10:10 am - 5:00 pm
HRL
-
DEN
7h 50m
2 stops
Southwest Logo
10:15 am - 6:00 pm
DEN
-
HRL
6h 45m
1 stop
$297Southwest
Wed, May 13 - Sun, May 17
Southwest Logo
12:45 pm - 7:30 pm
HRL
-
DEN
7h 45m
2 stops
Southwest Logo
7:40 am - 12:40 pm
DEN
-
HRL
4h 00m
1 stop
$300Southwest
Booking Insights

KAYAK's insights & trends for Harlingen to Denver flights

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

How much is a round-trip flight from Harlingen to Denver?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Harlingen to Denver departing in June.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Harlingen to Denver, 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 Denver is September, where tickets cost $206 (return) on average. On the other hand, the most expensive months are March and May, where the average cost of round-trip tickets is $442 and $373 respectively.

Good to know

Low seasonAugust
Cheapest flight$159
Best time to beat the crowds but there is an average 7% increase in price.
Most popular time to fly and prices are also 23% lower on average.
Flight from Harlingen to Denver

When to book flights from Harlingen to Denver

Are your dates flexible? Find out the best times to travel from Harlingen to Denver based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Harlingen to Denver

  • What is the cheapest flight from Harlingen to Denver?

    In the last 3 days, the lowest price for a flight from Harlingen to Denver was $159 for a one-way ticket and $197 for a round-trip.

  • Do I need a passport to fly between Harlingen and Denver?

    No

  • Which airports will I be using when flying from Harlingen to Denver?

    When flying out of Harlingen you will be using Harlingen Valley Intl. You will be landing at Denver, also known as Denver Intl.

  • Which aircraft models fly most regularly from Harlingen to Denver?

    The Embraer 175 (Enhanced Winglets) is the aircraft model that flies most regularly on the Harlingen to Denver flight route.

  • Which airline alliances offer flights from Harlingen to Denver?

    Star Alliance, and oneworld are the airline alliances operating flights between Harlingen and Denver, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Harlingen to Denver, Southwest or United Airlines?

    The two airlines most popular with KAYAK users for flights from Harlingen to Denver are Southwest and United Airlines. With an average price for the route of $331 and an overall rating of 8.0, Southwest is the most popular choice. United Airlines is also a great choice for the route, with an average price of $338 and an overall rating of 7.4.

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

    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 Denver.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Harlingen 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 Denver?

    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 to Denver with an airline and back to Harlingen with another airline. Booking your flights between Harlingen and DEN can sometimes prove cheaper using this method.

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

    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 to Denver from Harlingen up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from Harlingen to Denver

 
See real verified KAYAK customer reviews for airlines flying from Harlingen to Denver. 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 Denver? 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 4314 reviews
8.6Crew
7.5Entertainment
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

10.0 Excellentdebra, Apr 2026
LBB - LAS
Read more Southwest reviews

First time I've had to use the disabled accommodations. And I could not have had a better experience with Southwest, i was having trouble getting from one terminal to another due to my heart failure. And the next thing I know a Southwest agent had made sure. I had a wheelchair at all my flights. Can't thank them enough.

We waited in the airplane for over 45 min for a southwest employee to make the flight. This cause over half the plane to miss their connecting flight in Denver. When we confronted the desk upon arrival, they told us the only flight they had was the next day leaving at 8:50 pm!!! Or they offered to get us to Burbank or LA, but after that we were on our own to get back to Santa Barbara. I paid for a flight from sba to bna bna to sba. My re entry into mom mode has been 💯 rough because of southwest mistake with my flight. And now I’m leaving to Reno tomorrow for a vballl tournament and just discovered that my leg in Vegas has me and my 3 kids on a stand by flight even though I had booked these ticket last year November!! Do better southwest!

The new seat assignment thing is wierd. If you don’t pay for a seat they always assign you a middle seat regardless of how many people are on the flight. Idk… the new company that bought Southwest is trying to make it more profitable, but I’m just not seeing it. The flight attendants aren’t having as much fun anymore. It just feels like the airline is slowly dying. IMO. We shall see if Southwest is the next Toy’s R Us.

The Air hostess were very rude on my flight from Houston to Austin . Their regular communication itself felt a they are shouting at people.

Plane was late. Zero service for 2+ hour flight and it was not that bumpy.

I have roller bag with food and medication told me I couldn't bring on my 2nd flight today. 15 years flying with SW never an issue with that bag.

Great flight. Good snacks and drinks. Grateful it was free. The flight from Nashville to louisville, i think her name was Tracy (not sure that's right) super awesome, nice and cheerful. She really enjoyed being at work today! She was the person who scanned the boarding pass on flight wn941. She should be recommended for a raise !

I elected to pay for the upgrades and found very little difference

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

I was assigned seat 7E, yet my boarding was Group 5, which caused me to have to put my luggage in the back of the plance above `19 or 20 aisle, as passengers who had boarded earlier took the overhead bins in the front. SW needs to monitor bin space and ensure that bin space above the seat are aligned to those sitting near their seats. Also the seating assignments needs to align with group number. Maybe board those last first and so on? Having said the ALL the passengers on the plane were gracious enough to allow me and other passengers in this dilema to retrieve our luggage and helped us along the way. I always love the flight staff, as always their fantastic and I can't rave about them enough!

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

They told us yesterday APR21st that they were cleaning the plane and we got delayed. After that they said they didn't had any crew for the flight so they cancelled the flight till next day.

The flight crew on this leg of my trip was very friendly and pleasant. Every one of them was humorous, as well as helpful and accommodating. This group was BY FAR the best crew I’ve flown with. They deserve kudos.

The entertainment options on the seat back video boards were nice.

The boarding process was straightforward. One pertinent observation regarding all boarding procedures is that if an individual requires assistance or possesses a special status and is part of preboarding, it is advisable to limit the number of passengers who can preboard with them, rather than the entire, sometimes large, companion groups. The seats are uncomfortable, and the entertainment options are significantly inferior compared to other airlines. During the snack service, I requested an additional bag of snacks, but my request was denied. Initially, the flight attendant agreed to my request.becoming a strange accurate moment. The flight duration was four hours.

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

During landing. 2 crew members passed 3 times by my lane and didn't notice that people in front of us had their site to the furthermore reclined... That was uncomfortable and could have been dangerous.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

It’s always a great time flying with united airlines.

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

The flight was delayed about an hour for a maintenance specialist to approve the maintenance repair

This flight was delayed but it worked in my favor because my Atlanta to Dallas flight was delayed.

The staff was nice. I appreciated that I was able to take an earlier flight, even though it was last minute. The boarding process felt rather chaotic.

My flight got delayed a total of five times. And the boarding gate changed four times. most of the time the platform was not up-to-date with the changes taking place. The most discouraging part of the entire trip by far.

Returned home with a blood clot from flight homes and the uncomfortable aircraft I was on.

The crew was very kind, but no in-flight entertainment monitors and a 2 hour and 30 minute delay was extremely frustrating.

Everything was delayed and the staff sent me to the wrong gate, causing me to miss one of my flights. I arrived at my destination 6 hours later than I was supposed to.

It was good, the staff was great, and the food, was as usual, tea and biscuit. Bathroom was clean, and the plane was clean as well.

It was really a terrific experience both going and returning on AA. Staff and crew were professional.

I was able to get the AA customer Service desk to put me on an earlier flight without any issues.

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

Information on your arrival and departure airports