$21 Cheap Flights to Denver International

Compare Denver International Airport flights across hundreds of providers

Find the cheapest month or even day of the year to fly

Book the best flight with no fees

Flight deals to Denver International

Looking for a cheap last-minute deal or the best round-trip flight to Denver International Airport? If you want to travel to Denver International Airport next month, round-trip fares start from $55. Find the lowest prices on one-way and round-trip tickets right here.

Denver.$46 per passenger.Departing Sat, Oct 3, returning Tue, Oct 6.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Salt Lake City on Sat, Oct 3, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Oct 6, arriving in Salt Lake City.Price includes taxes and charges.From $46, select.

Denver.$51 per passenger.Departing Wed, Oct 7, returning Tue, Nov 3.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Wed, Oct 7, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Nov 3, arriving in Los Angeles International.Price includes taxes and charges.From $51, select.

Denver.$51 per passenger.Departing Sat, Aug 22, returning Tue, Sep 8.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Sat, Aug 22, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Sep 8, arriving in Los Angeles International.Price includes taxes and charges.From $51, select.

Denver.$51 per passenger.Departing Tue, Sep 8, returning Mon, Sep 21.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Tue, Sep 8, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Mon, Sep 21, arriving in Los Angeles International.Price includes taxes and charges.From $51, select.

Denver.$51 per passenger.Departing Tue, Sep 29, returning Tue, Oct 20.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Tue, Sep 29, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Oct 20, arriving in Los Angeles International.Price includes taxes and charges.From $51, select.

Denver.$52 per passenger.Departing Wed, Aug 12, returning Wed, Aug 19.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Wed, Aug 12, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Wed, Aug 19, arriving in Los Angeles International.Price includes taxes and charges.From $52, select.

Denver.$55 per passenger.Departing Tue, Jul 14, returning Tue, Jul 14.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Tue, Jul 14, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Jul 14, arriving in Los Angeles International.Price includes taxes and charges.From $55, select.

Denver.$55 per passenger.Departing Wed, Jul 29, returning Wed, Aug 12.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Ontario International on Wed, Jul 29, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Wed, Aug 12, arriving in Ontario International.Price includes taxes and charges.From $55, select.

Denver.$56 per passenger.Departing Tue, Nov 17, returning Tue, Nov 17.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Tue, Nov 17, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Nov 17, arriving in Los Angeles International.Price includes taxes and charges.From $56, select.

Denver.$77 per passenger.Departing Sat, Aug 8, returning Wed, Nov 11.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Oklahoma City Will Rogers World on Sat, Aug 8, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Wed, Nov 11, arriving in Oklahoma City Will Rogers World.Price includes taxes and charges.From $77, select.

Denver.$80 per passenger.Departing Tue, Jun 23, returning Tue, Jun 23.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Tue, Jun 23, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Jun 23, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $80, select.

Denver.$83 per passenger.Departing Mon, Jun 29, returning Tue, Jul 14.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Austin-Bergstrom on Mon, Jun 29, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Tue, Jul 14, arriving in Austin-Bergstrom.Price includes taxes and charges.From $83, select.

Denver.$83 per passenger.Departing Mon, Jul 13, returning Sat, Sep 5.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Austin-Bergstrom on Mon, Jul 13, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Sat, Sep 5, arriving in Austin-Bergstrom.Price includes taxes and charges.From $83, select.

Denver.$95 per passenger.Departing Sat, Aug 29, returning Sat, Oct 3.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Sat, Aug 29, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Sat, Oct 3, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $95, select.

Denver.$119 per passenger.Departing Fri, Jun 26, returning Wed, Aug 12.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Minneapolis St Paul on Fri, Jun 26, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Wed, Aug 12, arriving in Minneapolis St Paul.Price includes taxes and charges.From $119, select.

Denver.$131 per passenger.Departing Tue, Jul 14, returning Sun, Oct 11.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Los Angeles International on Tue, Jul 14, arriving in Denver International.Inbound direct flight with Frontier Airlines departing from Denver International on Sun, Oct 11, arriving in Los Angeles International.Price includes taxes and charges.From $131, select.

Find the cheapest time to fly to Denver International

Flexible on travel dates? Find the cheapest month – or even day – to fly to Denver International.

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Jan

Feb

Mar

Apr

May

Airports near Denver

Compare routes to Denver below. You may find an airport to fly into that's cheaper, faster, or easier.

Direct flights to Denver International

Frequently asked questions

How long is the flight to Denver International?

The average flight time to Denver International is 3 hours and 58 minutes. We've calculated this based on journeys from Washington, D.C..

Which airlines offer direct flights to Denver International?

United, Southwest Airlines, SkyWest Airlines, Air Canada, American Airlines, Lufthansa, Frontier Airlines and Alaska Airlines all fly non-stop to Denver International.

When is the cheapest time to fly to Denver International?

The cheapest month to fly to Denver International is usually October.

How can I find the best flight deal to Denver International?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Denver International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

Can I get a direct flight to Denver International Airport?

Yes – the average flight time is 2 hours and 36 minutes.

How much are round-trip flights to Denver International?

The best price we found for a round-trip flight to Denver International is $46. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

Which upcoming date is cheapest to fly to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that the cheapest date to fly to Denver International Airport is Saturday, October 3, 2026.

When is the best time to book flights to Denver?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to Denver is around 40 days in advance, so don’t leave your flight to the last minute.

Which is the cheapest airline to fly with to Denver?

Currently, Frontier Airlines offers the cheapest flight tickets to Denver International.

Flying to Denver International

The things to know before you go.

Cheapest flight found	$46
Cheapest month to fly	October
Average flight time	2 hrs, 37 mins
Most popular airline	United
Average flights per week	12,935

Discover Denver International

How to find cheap flights to Denver International Airport (DEN)

Right now, $21 is the lowest price for a one-way flight to Denver International Airport. Or you can book a return plane ticket to DEN for $46.
Stay on top of the best deals by setting up a Price Alert for tickets to DEN. We'll keep an eye on it for you, sending updates when fares go down.
Don't leave everything to the last minute. You're more likely to find the best price on tickets to Denver, where Denver International Airport is located, if you book early. Airlines usually offer some awesome early bird deals.
Select 'Add nearby airports' when searching to boost your chances of landing cheap flights to Denver. This will give you more choices for where you begin and end your journey, as well as different fares.
Think about taking a flight with a stop since indirect routes often cost less. Just uncheck the 'Direct flights' box when searching for your plane tickets to Denver International Airport.

Best time to go to Denver

The cheapest month to take off on a flight to Denver is typically May.
To find the cheapest month or even day for flights to DEN, use the 'Whole month' tool. If you're flexible with your dates, search for the green prices on the calendar — they show you the lowest available fares.
July is the most popular month for flights to DEN. It's an ideal time to explore Denver in full swing.
December is the quietest time of year to travel if you prefer a more relaxed pace. You'll generally find cheaper prices on plane tickets to Denver then.
Check the weather conditions before you go. July is the warmest time of year in Denver, averaging between 57ºF and 90ºF.
Temperatures are at their lowest in January, when they range from 16ºF to 45ºF.
October is your safest bet for clearer skies. With three days of rain on average, this is the driest month in Denver.
May brings the wettest weather. You can expect around nine days of rainfall if you're visiting then.

Flying to Denver International Airport (DEN): What you need to know

Fly to Denver without any layovers. These are some of the airlines that offer direct flights to Denver International Airport:
Think about booking your DEN plane ticket with Copa. It's the carrier with the fewest delays, with up to 91% of flights into this hub touching down on time.
The timezone at DEN is UTC-7.
Baymont by Wyndham Denver International Airport is a popular stay within easy reach of Denver International Airport. Rest up here after your flight to DEN.
If you have a connection out of Denver International Airport or flying home from there, your journey is likely to stay on schedule. Up to 80% of all flights out of DEN arrive as planned.

Getting to central Denver from Denver International Airport (DEN)

The distance from DEN to central Denver is about 25 miles.
You'll get to the center in around 35 minutes if you're taking a cab or a ride-share after your flight to DEN.
Expect the journey to take about 35 minutes when using public transport.
If you want to stay near all the action in Denver, book a room at one of these comfortable hotels:

Denver highlights

Jump off your flight to Denver and make your way to these must-see attractions:
- Denver Art Museum: An ideal place to begin sightseeing, this landmark is around 0.1 mile south of the city center.
- Elitch Gardens: You'll discover this park roughly 1 mile northwest of the center. It's a great spot to take some time out while exploring Denver.
- Ballpark: This is another good reason to visit this city. A memorable landmark, it's around 1 mile north of the center of Denver.

How to get to Fort Collins from Denver International Airport (DEN)

Heading straight for Fort Collins? From DEN, it takes around 1 hour 15 minutes to drive there. The city is about 70 miles from the airport.
If you're catching public transport, it'll take roughly 1 hour 45 minutes to make the trip.

Traveling from Denver International Airport (DEN) to Centennial

Centennial is about 20 miles from Denver International Airport if that's where your trip takes you.

Explore more of the United States

The United States keeps the adventures coming. Carry on to Colorado Springs, located about 70 miles south of Denver. Garden of the Gods, Pikes Peak Region Attractions and Red Rock Canyon are just the start of its must-sees. Colorado Springs Airport (COS) is the city's closest major airport.
Aurora is another top destination in the United States and is roughly 12 miles southwest of Denver. Make it a trip to remember with stops at Plains Conservation Center, DeLaney Homestead Historic District and Aircraft viewing.
About 55 miles northwest of Denver, Fort Collins is worth working into your travels. Top reasons to go include Arapaho National Forest, Odell Brewing Company and Poudre River Whitewater Park.