Cheap flights from Washington D.C. to Denver International

Compare Washington D.C. to Denver International flight deals

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Flight deals from Washington D.C. to Denver International

Looking for a cheap last-minute deal or the best return flight from Washington D.C. to Denver International Airport? If you want to travel next month, return fares start from $306. Find the lowest prices on one-way and return tickets right here.

Denver.$109 per passenger.Departing Tue, 18 Aug.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 18 Aug, arriving in Denver International.Price includes taxes and charges.From $109, select.

Denver.$134 per passenger.Departing Tue, 20 Oct.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 20 Oct, arriving in Denver International.Price includes taxes and charges.From $134, select.

Denver.$135 per passenger.Departing Tue, 14 Jul.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Washington Dulles on Tue, 14 Jul, arriving in Denver International.Price includes taxes and charges.From $135, select.

Denver.$157 per passenger.Departing Tue, 8 Sep.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 8 Sep, arriving in Denver International.Price includes taxes and charges.From $157, select.

Denver.$157 per passenger.Departing Tue, 25 Aug.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 25 Aug, arriving in Denver International.Price includes taxes and charges.From $157, select.

Denver.$158 per passenger.Departing Tue, 6 Oct.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 6 Oct, arriving in Denver International.Price includes taxes and charges.From $158, select.

Denver.$192 per passenger.Departing Thu, 19 Nov.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 19 Nov, arriving in Denver International.Price includes taxes and charges.From $192, select.

Denver.$192 per passenger.Departing Mon, 14 Sep.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Mon, 14 Sep, arriving in Denver International.Price includes taxes and charges.From $192, select.

Denver.$200 per passenger.Departing Tue, 7 Jul.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Tue, 7 Jul, arriving in Denver International.Price includes taxes and charges.From $200, select.

Denver.$207 per passenger.Departing Tue, 30 Jun.One-way flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departs from Baltimore Washington International on Tue, 30 Jun, arriving in Denver International.Price includes taxes and charges.From $207, select.

Denver.$229 per passenger.Departing Sat, 5 Dec.One-way flight with United.Outbound direct flight with United departs from Baltimore Washington International on Sat, 5 Dec, arriving in Denver International.Price includes taxes and charges.From $229, select.

Denver.$249 per passenger.Departing Mon, 15 Feb.One-way flight with United.Outbound direct flight with United departs from Baltimore Washington International on Mon, 15 Feb, arriving in Denver International.Price includes taxes and charges.From $249, select.

Denver.$250 per passenger.Departing Mon, 8 Mar.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Mon, 8 Mar, arriving in Denver International.Price includes taxes and charges.From $250, select.

Denver.$250 per passenger.Departing Thu, 14 Jan.One-way flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departs from Baltimore Washington International on Thu, 14 Jan, arriving in Denver International.Price includes taxes and charges.From $250, select.

Denver.$261 per passenger.Departing Tue, 6 Apr.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Tue, 6 Apr, arriving in Denver International.Price includes taxes and charges.From $261, select.

Denver.$261 per passenger.Departing Sat, 1 May.One-way flight with Delta.Outbound indirect flight with Delta, departs from Baltimore Washington International on Sat, 1 May, arriving in Denver International.Price includes taxes and charges.From $261, select.

Find the cheapest month to fly from Washington D.C. to Denver International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Washington D.C. to Denver International flights are currently cheapest in August.

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Direct flights from Washington D.C. to Denver International

Washington D.C. to Denver International: Alternative routes

Compare routes from Washington D.C. to Denver below. You may find an airport to fly into that's cheaper, faster, or easier than Denver International.

Washington D.C. to Denver: Flight information

The things to know before you go.

Cheapest flight found	$109
Cheapest month to fly	August
Average flight time	3 hrs, 59 mins
Most popular airline	Southwest Airlines
Average flights per week	250

Finding cheap flights from Washington D.C. to Denver International: Frequently asked questions

How much are return flights from Washington D.C. to Denver International?

The best price we found for a return flight from Washington D.C. to Denver International is $297. 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.

How long does it take to fly from Washington D.C. to Denver International?

3 hours and 59 minutes is the average flight time from Washington D.C. to Denver International.

Which airlines fly direct from Washington D.C. to Denver International?

Southwest Airlines, United and Copa fly direct from Washington D.C. to Denver International.

How many flights are there a week from Washington D.C. to Denver International?

As of June 2026, there are 250 flights per week flying from Washington D.C. to Denver International.

When is the cheapest time to fly from Washington D.C. to Denver International?

The cheapest month to fly from Washington D.C. to Denver International is usually July.

Which upcoming date is cheapest to fly from Washington D.C. to Denver International Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Washington D.C. to Denver International Airport on Monday, 27 July 2026.

Can I get a direct flight from Washington D.C. to Denver International Airport?

Yes – the average flight time is 3 hours and 59 minutes.

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.

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.

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

Start planning your trip by looking up the best departure point for your flight from Washington DC to Denver International Airport (DEN). Explore your options for leaving from Ronald Reagan Washington National Airport (DCA) or Washington Dulles International Airport (IAD), the city's main airports.
Hop on a direct Washington DC to Denver International Airport flight and you'll be travelling for an average of 4 hours 10 minutes.
Denver International Airport is located in Denver. The city is in the UTC-7 timezone and is two hours behind Washington DC.
Ronald Reagan Washington National Airport (DCA) to Denver International Airport (DEN) is the most popular route. There are 12 direct flights a week to pick from. If you have things to do before leaving, hop on the last flight with Frontier Airlines at 6pm. Opt for the first DCA to DEN departure operated by Frontier Airlines at 7am if you'd rather get going earlier.
For a smooth journey, turn up at the airport two hours ahead of international flights and an hour before domestic departures. This will give you plenty of time to board your flight from Washington DC to DEN.
If you're flying during a peak month like July, arrive at the terminal even earlier. It's wise to arrive up to four hours before an international flight and two hours ahead of a domestic departure. Expect lines to be longer during high seasons like Thanksgiving, Christmas and New Year.

Airports in Washington DC

Ronald Reagan Washington National Airport (DCA)

Ronald Reagan Washington National Airport (DCA) provides a hassle-free way to reach your destination. Nonstop flights from Washington DC to Denver International Airport (DEN) operate out of this terminal.
You can get away on a direct flight from Washington DC to Denver International Airport with United Airlines. This well-known airline operates departures from DCA.
The airline most travellers choose when flying between DCA and DEN is United.
Frontier Airlines is the most punctual carrier on this route.
Travelling from central Washington DC to DCA takes about 25 minutes by public transport. If you drive, ride-share or get a taxi, you'll cover the 6 kilometres in 10 minutes or so, depending on traffic conditions.
Want a hassle-free start to your travels? Stay near Ronald Reagan Washington National Airport. Whether you're boarding an early flight from Washington DC to Denver International Airport or just don't like being rushed, these hotels are the answer:
Of the flights that depart from Ronald Reagan Washington National Airport, 71% arrive as scheduled at their destination.
DCA's address is 1 Aviation Circle.

Washington Dulles International Airport (IAD)

Looking to fly out of Washington Dulles International Airport (IAD)? Direct Washington DC to Denver International Airport (DEN) plane tickets are available from this popular hub.
Get on your direct flight from Washington DC to DEN with United Airlines. This is one of the main carriers flying this route out of IAD.
On the IAD to DEN route, United is the preferred choice for many passengers.
Flights between Washington Dulles International Airport and Denver International Airport are more likely to stay on schedule with United than with any other carrier.
IAD is around 40 kilometres from central Washington DC. It'll take you 45 minutes or so to get to the airport by car from the city centre. Public transport takes roughly 1 hour 10 minutes.
Catching the earliest flight? Think about staying at one of these accommodation options near Washington Dulles International Airport the day before your Washington DC to DEN flight:
Washington Dulles International Airport has an on-time performance rate of 77%. This figure provides insight into how often flights that leave from this airport land on time.
IAD is located at 1 Saarinen Circle.

Baltimore Washington International Airport (BWI)

One flight, no fuss. You can book a direct flight from Washington DC to Denver International Airport departing from Baltimore Washington International Airport (BWI).
Sail through the skies with any of these airlines that offer direct Washington DC to DEN plane tickets from BWI:
The most frequently booked airline between BWI and DEN is Southwest Airlines.
The carrier with the top on-time arrival rate on this route is United.
BWI is roughly 48 kilometres from central Washington DC. The drive from the city centre to the airport takes about 40 minutes. If you're planning to take public transport, you can expect a journey of around 50 minutes.
Skip the rush on your departure day — stay near Baltimore Washington International Airport and know you'll make it to your boarding gate with time to spare. Check in to one of these hotels the day before if you have an early Washington DC to Denver International Airport flight:
Flights that depart from BWI arrive at their destination within the expected time frame 77% of the time.

About Denver International Airport (DEN)

Consider staying at Baymont by Wyndham Denver International Airport after your flight from Washington DC to Denver International Airport. It's not too far from DEN and a great option if you'd like to relax as soon as possible.
Booking your vehicle around one week in advance of your Washington DC to Denver International Airport flight can help you secure the lowest rate.
DEN is located at 8500 Pena Boulevard.

Getting from Denver International Airport (DEN) to central Denver

Central Denver is around 40 kilometres from Denver International Airport and takes about 35 minutes to reach by car. See what your options are for getting into town, whether that's with a taxi, car hire or ride-share.
If you're taking public transport, expect a journey time of roughly 35 minutes.

How to find the cheapest flights from Washington DC to Denver International Airport (DEN)

The lowest price we've found for a one-way ticket from Washington DC to Denver International Airport is $109. For a return flight on this route, the best price is $297. Depending on the availability and when you book, these fares may change.
Don't leave things to the last moment. You're more likely to walk away with cheap flights from Washington DC to DEN if you book ahead. Airlines often offer some fantastic early bird deals.
Affordable Washington DC to Denver International Airport tickets are easier to find if you're not locked into specific dates. Use the 'Whole month' search function to compare fares across every month and then fly out on the cheapest day.
Spend less time searching for cheap plane tickets from Washington DC to DEN by setting up a Price Alert. We'll send you an email or notification on the app when fares go down.
Find an affordable flight from Washington DC to Denver International Airport by using filters. Select your preferred duration, departure time and airlines, then sort the results by 'Cheapest' for the best deals.

The best time to fly from Washington DC to Denver International Airport (DEN)

July is when most people book flights from Washington DC to Denver International Airport (DEN). Visit Denver in December for a quieter experience.
The warmest month in Denver is July, with temperatures ranging between 14ºC (57ºF) and 32ºC (90ºF). Lock in your Washington DC to DEN plane ticket then if that's your ideal forecast.
Search for cheap tickets from Washington DC to Denver International Airport in January if you like travelling in cooler conditions. Temperatures are at their lowest then, ranging between -9ºC (16ºF) and 7ºC (45ºF).

More about Denver

When it comes to searching for somewhere to lay your head, you'll find the top stays in Denver right here. Browse these hotels once you've locked in your flight from Washington DC to Denver International Airport:
Denver Art Museum and Meow Wolf Denver's Convergence Station are a couple of top attractions to add to your Denver itinerary. Keep the sightseeing going at Ballpark.

Explore more of the United States

Colorado Springs is just one of the many places in the United States waiting to be explored after you've experienced Denver. Around 113 kilometres away to the south, its best attractions include Garden of the Gods, Pikes Peak Region Attractions and Red Rock Canyon.
If you're interested in discovering another corner of the United States, consider Pueblo, about 177 kilometres south of Denver. Rosemount Museum, Cathedral of the Sacred Heart and Sangre de Cristo Arts & Conference Centre are key highlights.