€85 Cheap Flights Washington to Denver (IAD-DEN)

View €85 flight on Sat, 6 Sep 2025Opens in a new window

Popular airlines from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN)

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Cheap flights from Washington to Denver (IAD-DEN)

Prices were available within the past 7 days and start at €85 for one-way flights and €189 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€189 Return, found 1 hour ago
€189
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €189 found 1 hour ago
United
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€215 Return, found 1 hour ago
€215
Return
found 1 hour ago
Select United flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €215 found 1 hour ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€219 Return, found 1 hour ago
€219
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €219 found 1 hour ago
Delta
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€239 Return, found 1 hour ago
€239
Return
found 1 hour ago
Select Delta flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €239 found 1 hour ago
United
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€240 Return, found 1 hour ago
€240
Return
found 1 hour ago
Select United flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €240 found 1 hour ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€244 Return, found 1 hour ago
€244
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €244 found 1 hour ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€249 Return, found 1 hour ago
€249
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €249 found 1 hour ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€256 Return, found 1 hour ago
€256
Return
found 1 hour ago
Select American Airlines flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €256 found 1 hour ago
United
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€258 Return, found 1 hour ago
€258
Return
found 1 hour ago
Select United flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €258 found 1 hour ago
Delta
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€264 Return, found 1 hour ago
€264
Return
found 1 hour ago
Select Delta flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €264 found 1 hour ago

Find the cheapest month to fly from Washington (IAD) to Denver (DEN)

April is typically the cheapest month to fly

From €103 - €245 per traveller.

Graph displaying average flight prices per month

Washington to Denver route information
Origin airport
Washington Dulles Intl.
Destination airport
Denver Intl.
Return price
€188
Distance
2318 km
Average flight time
1 hour 46 mins

Perfect flights from Washington to Denver

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Washington to Denver. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of Denver, surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Washington Dulles Intl. to Denver Intl. ticket options cater to your travel preferences, with incredible one-way fares from €85 and roundtrip prices from €189. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Denver Intl. and explore Denver and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your IAD to DEN travel arrangements today and embark on the journey of a lifetime in Denver.

Frequently asked questions

How much is a flight from Washington Dulles Intl. Airport (IAD) to Denver Airport?
If you're travelling from IAD to Denver Airport, round-trip flights start from €189. This figure is based on airfares listed within the last 7 days on Expedia for flights departing within the next year, so don't hang around. Book today and save yourself both money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from IAD to DIA airport?
We get that things come up unexpectedly, so we've made it as easy as possible for you to cancel your trip online. Just head to the Customer Service Portal and follow the instructions.
How do I find cheap flights from Washington Dulles Intl. Airport (IAD) to Denver Intl. Airport (DEN) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Dulles Intl. Airport to DEN flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Dulles Intl. Airport to DEN?
The flight distance between IAD and DEN is 2,300 kilometres. Listen to some music or bury your nose in a book and the trip will whiz by.
Which airlines fly direct from IAD to Denver Airport?
A popular airline that operates on the route from Dulles Intl. Airport to Denver Airport is United Airlines (UA). It offers 182 flights every month. Another airline operating on this route is Southwest Airlines (WN). You'll have 56 flights a month to select from.
Are IAD to DEN flight tickets cheaper when they're purchased at the last minute?
Tickets from Washington Dulles Intl. Airport (IAD) to DIA airport are available up to 12 months before departure on Expedia. And although you may occasionally nab a fantastic last-minute deal, it's never something you can count on. Also, booking your flights ahead of time means you'll have more choices — and you can avoid getting trapped in the dreaded middle seat! We regularly update our fares to bring you the best bargains, so check back often for all the latest specials.

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