€128 Cheap Flights Denver to Washington (DEN-IAD)

View €128 flight on Sat, 13 Sep 2025Opens in a new window

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

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 15% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap flights from Denver to Washington (DEN-IAD)

Prices were available within the past 7 days and start at €128 for one-way flights and €229 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€229 Return, found 2 days ago
€229
Return
found 2 days ago
Select American Airlines flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €229 found 2 days ago
Delta
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€229 Return, found 2 days ago
€229
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €229 found 2 days ago
Delta
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€230 Return, found 2 days ago
€230
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €230 found 2 days ago
United
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€255 Return, found 2 days ago
€255
Return
found 2 days ago
Select United flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €255 found 2 days ago
Delta
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€257 Return, found 2 days ago
€257
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €257 found 2 days ago
Delta
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€264 Return, found 2 days ago
€264
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €264 found 2 days ago
United
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€269 Return, found 2 days ago
€269
Return
found 2 days ago
Select United flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €269 found 2 days ago
Delta
Sat, 6 Sep - Sat, 13 Sep
DEN
Denver
IAD
Washington
€281 Return, found 4 days ago
€281
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Sep from Denver to Washington, returning Sat, 13 Sep, priced at €281 found 4 days ago
United
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€282 Return, found 2 days ago
€282
Return
found 2 days ago
Select United flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €282 found 2 days ago
Delta
Sat, 6 Sep - Sat, 13 Sep
DEN
Denver
IAD
Washington
€282 Return, found 4 days ago
€282
Return
found 4 days ago
Select Delta flight, departing Sat, 6 Sep from Denver to Washington, returning Sat, 13 Sep, priced at €282 found 4 days ago
Delta
Sat, 13 Sep - Sat, 20 Sep
DEN
Denver
IAD
Washington
€291 Return, found 2 days ago
€291
Return
found 2 days ago
Select Delta flight, departing Sat, 13 Sep from Denver to Washington, returning Sat, 20 Sep, priced at €291 found 2 days ago

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

April is typically the cheapest month to fly

From €103 - €328 per traveller.

Graph displaying average flight prices per month

Denver to Washington route information
Origin airport
Denver Intl.
Destination airport
Washington Dulles Intl.
Return price
€229
Distance
2318 km
Average flight time
5 hours 23 mins

Perfect flights from Denver to Washington

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Denver to Washington. 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 Chantilly, 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 Denver Intl. to Washington Dulles Intl. ticket options cater to your travel preferences, with incredible one-way fares from €128 and roundtrip prices from €229. 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 Washington Dulles Intl. and explore Chantilly 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 DEN to IAD travel arrangements today and embark on the journey of a lifetime in Washington.

Frequently asked questions

How much is a flight from Denver Airport to Washington Dulles Intl. Airport (IAD)?
Within the past 7 days on Expedia, for flights departing within the next year, the lowest price advertised for a round-trip flight between Denver Intl. Airport (DEN) and Washington Dulles Intl. Airport (IAD) was €229. Cheap tickets don't hang around forever, so make sure you book yours today. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from DEN to Washington Dulles Intl. Airport (IAD)?
We understand that life can throw the odd curveball, so we've made it as easy as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Denver Intl. Airport (DEN) to Washington Dulles Intl. Airport (IAD) 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 Denver Airport to IAD flights, you'll see a "no change fees" filter for you to select.
How far is the flight from DIA airport to Dulles Intl. Airport?
The flight distance from Denver Airport to Dulles Intl. Airport is 2,300 kilometres. Bring a drink, a snack and a few good podcasts. Keep yourself occupied and time will zip by.
Which airlines fly direct from DEN to Dulles Intl. Airport?
United Airlines (UA) is a popular choice. It offers 182 flights from Denver Intl. Airport (DEN) to IAD each month. If you're eager for more options, check out the ticket prices from Southwest Airlines (WN). This airlines operates 56 flights every month between these airports.
Are DEN to IAD flight tickets cheaper when they're purchased at the last minute?
It is possible to score a fantastic last-minute deal from Denver Airport to Dulles Intl. Airport, but it's also possible to miss out altogether! As many airlines advertise prices up to 12 months in advance, it's worthwhile keeping an eye on fares early and being ready to pounce when you see a bargain. Expedia compares air carrier prices and updates flight deals all the time, so you can rest assured you're always seeing the latest offers.

Explore a world of travel with Expedia

*Available to Expedia members.