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฿8,565 Cheap Flights from Denver (DEN) to Washington (IAD)

View ฿8,565 flight on Sun, 4 Oct 2026Opens in a new window

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

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Cheap Flights from Denver (DEN) to Washington (IAD)

Prices were available within the past 7 days and start at ฿8,565 for one-way flights and ฿16,860 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 8 Oct - Mon, 12 Oct
DEN
Denver
IAD
Washington
฿16,860 Return, found 22 hours ago
฿16,860
Return
found 22 hours ago
Select Delta flight, departing Thu, 8 Oct from Denver to Washington, returning Mon, 12 Oct, priced at ฿16,860 found 22 hours ago
Delta
Sat, 19 Sept - Tue, 22 Sept
DEN
Denver
IAD
Washington
฿18,180 Return, found 1 day ago
฿18,180
Return
found 1 day ago
Select Delta flight, departing Sat, 19 Sept from Denver to Washington, returning Tue, 22 Sept, priced at ฿18,180 found 1 day ago
United
Thu, 8 Oct - Mon, 12 Oct
DEN
Denver
IAD
Washington
฿19,145 Return, found 22 hours ago
฿19,145
Return
found 22 hours ago
Select United flight, departing Thu, 8 Oct from Denver to Washington, returning Mon, 12 Oct, priced at ฿19,145 found 22 hours ago
Delta
Sat, 19 Sept - Tue, 22 Sept
DEN
Denver
IAD
Washington
฿19,345 Return, found 1 day ago
฿19,345
Return
found 1 day ago
Select Delta flight, departing Sat, 19 Sept from Denver to Washington, returning Tue, 22 Sept, priced at ฿19,345 found 1 day ago
Delta
Thu, 8 Oct - Mon, 12 Oct
DEN
Denver
IAD
Washington
฿19,840 Return, found 22 hours ago
฿19,840
Return
found 22 hours ago
Select Delta flight, departing Thu, 8 Oct from Denver to Washington, returning Mon, 12 Oct, priced at ฿19,840 found 22 hours ago
Delta
Thu, 17 Sept - Mon, 21 Sept
DEN
Denver
IAD
Washington
฿20,170 Return, found 21 hours ago
฿20,170
Return
found 21 hours ago
Select Delta flight, departing Thu, 17 Sept from Denver to Washington, returning Mon, 21 Sept, priced at ฿20,170 found 21 hours ago
Delta
Sat, 19 Sept - Tue, 22 Sept
DEN
Denver
IAD
Washington
฿20,500 Return, found 1 day ago
฿20,500
Return
found 1 day ago
Select Delta flight, departing Sat, 19 Sept from Denver to Washington, returning Tue, 22 Sept, priced at ฿20,500 found 1 day ago
United
Sat, 19 Sept - Tue, 22 Sept
DEN
Denver
IAD
Washington
฿20,505 Return, found 1 day ago
฿20,505
Return
found 1 day ago
Select United flight, departing Sat, 19 Sept from Denver to Washington, returning Tue, 22 Sept, priced at ฿20,505 found 1 day ago
Delta
Sat, 19 Sept - Tue, 22 Sept
DEN
Denver
IAD
Washington
฿20,830 Return, found 1 day ago
฿20,830
Return
found 1 day ago
Select Delta flight, departing Sat, 19 Sept from Denver to Washington, returning Tue, 22 Sept, priced at ฿20,830 found 1 day ago
American Airlines
Sat, 19 Sept - Tue, 22 Sept
DEN
Denver
IAD
Washington
฿21,165 Return, found 1 day ago
฿21,165
Return
found 1 day ago
Select American Airlines flight, departing Sat, 19 Sept from Denver to Washington, returning Tue, 22 Sept, priced at ฿21,165 found 1 day ago

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

September is typically the cheapest month to fly

From ฿5,628 - ฿7,813 per traveller.

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 ฿16,860. 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.

Travel information

Origin airport
Denver Intl.
Destination airport
Washington Dulles Intl.
Airlines serving
American Airlines, Delta, United
Return price
฿16,860
Distance
2318 km
Average flight time
5 hours 49 mins

Book with confidence

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 , 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 ฿8,565 and roundtrip prices from ฿16,860. 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 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 to travel arrangements today and embark on the journey of a lifetime in Washington.
Perfect flights from Denver to Washington
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