Cheap flights from Harlingen to Denver from $109
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Harlingen to Denver departing on 11/2. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Find the cheapest flights from Harlingen to Denver
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Southwest flights from Harlingen to Denver
Our best Southwest deals on Harlingen to Denver flight tickets
American Airlines flights from Harlingen to Denver
Our best American Airlines deals on Harlingen to Denver flight tickets
momondo Fare Finder
Use the filters below to find and compare flights from Harlingen to Denver that are best for you.
Fly from
Fly to
Route
Depart
Return
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Wed 1/6
7:40 am-10:55 am
1 stop4h 15m
Denver Intl
Mon 1/11
8:30 am-4:00 pm
1 stop6h 30m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Thu 11/26
10:00 am-1:25 pm
1 stop4h 25m
Denver Intl
Tue 12/1
6:00 am-10:55 am
1 stop3h 55m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Thu 11/26
1:25 pm-4:40 pm
1 stop4h 15m
Denver Intl
Tue 12/1
1:35 pm-9:50 pm
2 stops7h 15m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Wed 1/6
7:40 am-2:45 pm
2 stops8h 05m
Denver Intl
Mon 1/11
4:40 pm-9:50 pm
1 stop4h 10m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Mon 11/2
6:41 pm-11:48 pm
1 stop6h 07m
Denver Intl
Mon 11/9
5:30 am-1:56 pm
1 stop7h 26m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Tue 11/10
7:10 am-12:07 pm
1 stop5h 57m
Denver Intl
Wed 11/11
4:44 pm-10:48 pm
1 stop5h 04m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Fri 11/6
5:25 pm-10:15 pm
1 stop5h 50m
Denver Intl
Thu 11/12
4:44 pm-10:48 pm
1 stop5h 04m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Fri 11/6
5:25 pm-10:15 pm
1 stop5h 50m
Denver Intl
Thu 11/12
4:44 pm-10:48 pm
1 stop5h 04m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Tue 11/10
5:25 pm-6:59 am
2 stops14h 34m
Denver Intl
Wed 11/11
4:44 pm-10:48 pm
1 stop5h 04m
HarlingenDenver
HRL Harlingen Valley Intl - DEN Denver Intl
HRLDEN
Harlingen Valley Intl
Thu 12/24
11:46 am-1:12 pm
1 stop26h 26m
Denver Intl
Mon 12/28
6:47 pm-9:52 am
1 stop14h 05m
See travel insights to Denver from
How to get the cheapest flight ticket from Harlingen to Denver
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
What is the typical price of a round-trip flight between Harlingen and Denver?
Prices are currently low for flights on this route.
Typical prices usually range from $338 to $419.The lowest price recently found on this route was $217.
What is the cheapest month to fly to Denver?
The cheapest month to fly to Denver from Harlingen is in August. Flight prices, which tend to average around $268, are often lower during this time because this is during the off-season. If you don’t want to visit Denver in August, then you should wait until November to fly from Harlingen, when ticket prices are also cheap, with an average price of $308.
What is the cheapest Harlingen Valley Intl to Denver Intl flight route?
Fly from Harlingen Valley Intl to Denver Intl for the best Harlingen Valley Intl - Denver Intl flight prices
What cabin class options are available on Harlingen to Denver flights?
There is only 1 cabin class available to choose from on Harlingen to Denver flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How have Harlingen to Denver flight prices changed over time?
What is the cheapest airline that flies from Harlingen Valley Intl to Denver Intl?
Southwest and United Airlines are the most popular carriers operating from Harlingen Valley Intl to Denver Intl
What airlines fly to Denver?
American Airlines, Southwest and United Airlines are the top three most popular airlines that fly to Denver from Harlingen according to our data. American Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Denver. Keep in mind that there are 4 different airlines that fly to Denver on a routine basis, so you have a few additional options to choose from.
When to book flights from Harlingen to Denver
Cheap Harlingen to Denver (HRL to DEN) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Harlingen to Denver
Frequently asked questions about flying from Harlingen to Denver
How far is Harlingen Valley Intl to Denver Intl by plane?
Harlingen Valley Intl and Denver Intl are 1025.4 mi apart from one another. Typically, this will take 4h 15m by plane in normal conditions.
When did momondo last update prices for flights from Harlingen Valley Intl Airport to Denver Intl Airport?
Prices for flights from Harlingen Valley Intl Airport to Denver Intl Airport refresh daily.
How many operators does momondo search for flights from Harlingen Valley Intl Airport to Denver Intl Airport?
As of October 2026, there are 3 operators available to choose from for flights from Harlingen Valley Intl Airport to Denver Intl Airport.
How old do you have to be to fly from Harlingen Valley Intl Airport to Denver Intl Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Harlingen Valley Intl Airport to Denver Intl Airport.
What documentation or ID do you need to fly to Denver Intl Airport?
The required travel and health documents for your Denver Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Denver Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from Harlingen to Denver?
momondo data reveals that the most frequently booked plane model on the route from Harlingen to Denver is Embraer 175 (Enhanced Winglets), representing 100.00% of all bookings.
What is the most popular airline from Harlingen to Denver?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Harlingen to Denver is Southwest (71% of total bookings). The next most popular airlines are American Airlines (16%) and United Airlines (12%).
Best airlines flying from Harlingen to Denver
Compare and see reviews for airlines that fly from Harlingen to Denver with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $198 | Free Cancellation | Rating 7.9 4,216 reviews | |||
| PriceFrom $223 | Free Cancellation | Rating 7.0 12,162 reviews | |||
| PriceFrom $268 | Free Cancellation | Rating 7.4 10,351 reviews |
Traveling to a place near Denver?
Book flights to Denver if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Harlingen to Denver?
We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Harlingen to Denver for you.
Can I find flights from Harlingen to Denver with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to Denver from Harlingen with this policy.
How can momondo help me find flights from Harlingen to Denver?
Once all potential Harlingen to Denver flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.
I’m not ready to book a flight from Harlingen to Denver right now. Can momondo alert me if prices change?
Price alerts on flights to Denver from Harlingen are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.