€87 Cheap Flights Washington to Denver (IAD-DEN)

View €87 flight on Tue, 2 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 €87 for one-way flights and €173 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 6 Sep - Sat, 13 Sep
IAD
Washington
DEN
Denver
€173 Return, found 2 days ago
€173
Return
found 2 days ago
Select American Airlines flight, departing Sat, 6 Sep from Washington to Denver, returning Sat, 13 Sep, priced at €173 found 2 days ago
American Airlines
Thu, 4 Sep - Mon, 8 Sep
IAD
Washington
DEN
Denver
€189 Return, found 5 days ago
€189
Return
found 5 days ago
Select American Airlines flight, departing Thu, 4 Sep from Washington to Denver, returning Mon, 8 Sep, priced at €189 found 5 days ago
American Airlines
Sat, 30 Aug - Sat, 6 Sep
IAD
Washington
DEN
Denver
€189 Return, found 3 days ago
€189
Return
found 3 days ago
Select American Airlines flight, departing Sat, 30 Aug from Washington to Denver, returning Sat, 6 Sep, priced at €189 found 3 days ago
Delta
Sat, 6 Sep - Sat, 13 Sep
IAD
Washington
DEN
Denver
€190 Return, found 2 days ago
€190
Return
found 2 days ago
Select Delta flight, departing Sat, 6 Sep from Washington to Denver, returning Sat, 13 Sep, priced at €190 found 2 days ago
American Airlines
Sat, 6 Sep - Sat, 13 Sep
IAD
Washington
DEN
Denver
€200 Return, found 2 days ago
€200
Return
found 2 days ago
Select American Airlines flight, departing Sat, 6 Sep from Washington to Denver, returning Sat, 13 Sep, priced at €200 found 2 days ago
American Airlines
Sat, 30 Aug - Sat, 6 Sep
IAD
Washington
DEN
Denver
€207 Return, found 3 days ago
€207
Return
found 3 days ago
Select American Airlines flight, departing Sat, 30 Aug from Washington to Denver, returning Sat, 6 Sep, priced at €207 found 3 days ago
Delta
Sat, 6 Sep - Sat, 13 Sep
IAD
Washington
DEN
Denver
€208 Return, found 2 days ago
€208
Return
found 2 days ago
Select Delta flight, departing Sat, 6 Sep from Washington to Denver, returning Sat, 13 Sep, priced at €208 found 2 days ago
United
Sat, 6 Sep - Sat, 13 Sep
IAD
Washington
DEN
Denver
€209 Return, found 2 days ago
€209
Return
found 2 days ago
Select United flight, departing Sat, 6 Sep from Washington to Denver, returning Sat, 13 Sep, priced at €209 found 2 days ago
American Airlines
Sat, 30 Aug - Sat, 6 Sep
IAD
Washington
DEN
Denver
€212 Return, found 3 days ago
€212
Return
found 3 days ago
Select American Airlines flight, departing Sat, 30 Aug from Washington to Denver, returning Sat, 6 Sep, priced at €212 found 3 days ago
American Airlines
Sat, 6 Sep - Sat, 13 Sep
IAD
Washington
DEN
Denver
€213 Return, found 2 days ago
€213
Return
found 2 days ago
Select American Airlines flight, departing Sat, 6 Sep from Washington to Denver, returning Sat, 13 Sep, priced at €213 found 2 days ago

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

April is typically the cheapest month to fly

From €104 - €256 per traveller.

Graph displaying average flight prices per month

Washington to Denver route information
Origin airport
Washington Dulles Intl.
Destination airport
Denver Intl.
Airlines serving
American Airlines, Delta, United
Return price
€173
Distance
2318 km
Average flight time
1 hour 47 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 €87 and roundtrip prices from €173. 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 €173. 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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