$151 Cheap Flights from Harlingen to Denver

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

Find The Best Dates To Fly from Valley Intl. to Denver Intl.

Amazing HRL to DEN Flight Deals

The cheapest flights to Denver Intl. found within the past 7 days were $298 round trip and $151 one way. Prices and availability subject to change. Additional terms may apply.

Frequently asked questions

Can I catch a flight from HRL to DIA airport right now?
Ensure you go to our Covid-19 Travel Advisor to discover if there are any present travel advice reports or quarantine requirements in effect in Denver Intl. Airport (DEN) when flying in from HRL.
Are there direct flights from HRL to Denver Airport?
If you’re not a big fan of stopovers, you’ll want to plan your flight from Valley Intl. Airport to Denver Airport in advance. Frontier Airlines is the only airline that operates nonstop flights on this route.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to DIA airport, please visit our Customer Service Portal.
How long is the flight from Valley Intl. Airport to DIA airport?
If you’re traveling from Harlingen to Denver, you can expect the trip to take an average of 4 hours and 2 minutes. If this sounds longer than you would have liked, why not make the most of it? Read up on your destination, get some last-minute organizing done and have a decent rest before the adventure begins.
What is the flight distance from HRL to Denver Airport?
With a flight distance of 1,050 mi separating Valley Intl. Airport and Denver Airport, you’ll be cruising at altitude for quite a while. It’s a great opportunity to watch a movie, catch up on work or just sit back and relax with a book.
What airlines fly from Valley Intl. Airport to DEN?
Know the dates for your trip? Eager to fly straight from Valley Intl. Airport (HRL) to Denver Airport? With Frontier Airlines offering 8 flights every month, you’ll be cruising the skies soon enough.
What airlines have practices regarding COVID-19 in place and use social distancing?
From the moment you enter the departure terminal to when you leave the arrivals terminal, if you’re flying with United Airlines, Southwest Airlines or Frontier Airlines you can be sure that COVID-19 measures and social distancing rules have been adhered to. Many airlines have introduced capped capacity flights and keeping the middle seat empty.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.


Traveling From
Valley Intl.
Traveling To
Denver Intl.
Shortest Flight Time
4 hours 20 mins
Earliest Departure Time
6:20PM CDT
Latest Departure Time
6:20PM CDT
Lowest Flight Price

Route Info

Flight path for flights from Valley International Airport to Denver International Airport.

1,163.00 miles

Discover our best flights from Harlingen HRL to Denver DEN. 

With 20 airlines to choose from on Travelocity, you can easily find the best option for you. Use our filters to sort by price, compare airlines, and find the most convenient flight times. 


Find our best return flights from Harlingen HRL to Denver DEN at the right price  

Airfares to Denver DEN from Harlingen HRL currently cost between $298 and $383. It’s usually cheaper to book a round trip than two separate one-way flights. Prices and availability subject to change. Additional terms may apply. 


Book one-way flights from Harlingen HRL to Denver DEN 

If you want to be flexible about when you return, or keep your travel options open ended, a one-way flight could be just the ticket! You’ll find one-way airfares from Harlingen HRL to Denver DEN on Travelocity starting at $151. Prices and availability subject to change. Additional terms may apply. 


Get to Denver DEN from Harlingen HRL quicker with direct flights. 

Get to Denver faster, without the hassle of changing planes and moving baggage, by booking a direct flight. Expect your direct flight to DEN from HRL to take around 4 hour(s) 20 min(s).  


Find our cheapest airfares for flights from Harlingen HRL to Denver DEN

Find cheap flight deals by using our search filters to sort results starting with the lowest price airfares to DEN from HRL. Our Price Match Promise means if you find a lower rate on Travelocity.com or on another US-based website within 24 hours of booking, we’ll credit or refund the difference.  


Get our best airfare deals for your flight from Harlingen HRL to Denver DEN today 

If you’re flexible about when you travel, August is usually the cheapest month to fly from Harlingen HRL to Denver DEN. If you need to be more specific, search by date and arrival and departure times.Then, compare prices across different airlines, and sort results by lowest price first. 


Book flexible airline tickets for flights to Denver DEN from Harlingen HRL 

Some airlines let you change your travel dates without charging a fee. Use our ‘no change fee’ filter to see which flights to DEN from HRL have this option.  


Travel with confidence when you book flights to Denver DEN from Harlingen HRL with Travelocity 

We’ve secured fantastic deals with all the main airline carriers and it’s easy to compare, choose, and book with Travelocity. With 24/7 customer service and our free 'App', we’ll always keep you moving. 

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.