฿3,905 Cheap Flights from Denver (DEN) to Washington (IAD)

View ฿3,905 flight on Thu, 8 Jan 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 ฿3,905 for one-way flights and ฿7,485 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿7,485 Return, found 6 days ago
฿7,485
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿7,485 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿8,150 Return, found 6 days ago
฿8,150
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿8,150 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿8,475 Return, found 6 days ago
฿8,475
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿8,475 found 6 days ago
United
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿8,480 Return, found 6 days ago
฿8,480
Return
found 6 days ago
Select United flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿8,480 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿8,805 Return, found 6 days ago
฿8,805
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿8,805 found 6 days ago
United
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,135 Return, found 6 days ago
฿9,135
Return
found 6 days ago
Select United flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,135 found 6 days ago
United
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,140 Return, found 6 days ago
฿9,140
Return
found 6 days ago
Select United flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,140 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,465 Return, found 6 days ago
฿9,465
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,465 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,470 Return, found 6 days ago
฿9,470
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,470 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,490 Return, found 6 days ago
฿9,490
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,490 found 6 days ago
American Airlines
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,785 Return, found 6 days ago
฿9,785
Return
found 6 days ago
Select American Airlines flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,785 found 6 days ago
United
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,795 Return, found 6 days ago
฿9,795
Return
found 6 days ago
Select United flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,795 found 6 days ago
Delta
Thu, 8 Jan - Sat, 10 Jan
DEN
Denver
IAD
Washington
฿9,820 Return, found 6 days ago
฿9,820
Return
found 6 days ago
Select Delta flight, departing Thu, 8 Jan from Denver to Washington, returning Sat, 10 Jan, priced at ฿9,820 found 6 days ago

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

April is typically the cheapest month to fly

From ฿3,893 - ฿12,389 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 ฿7,485. 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.
Return price
฿7,485
Distance
2318 km
Average flight time
5 hours 16 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 ฿3,905 and roundtrip prices from ฿7,485. 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.
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