฿4,750 Cheap Flights from Denver (DEN) to Washington (IAD)

View ฿4,750 flight on Fri, 24 Oct 2025Opens 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 ฿4,750 for one-way flights and ฿21,280 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿21,280 Return, found 8 hours ago
฿21,280
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿21,280 found 8 hours ago
Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿22,450 Return, found 8 hours ago
฿22,450
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿22,450 found 8 hours ago
Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿22,585 Return, found 8 hours ago
฿22,585
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿22,585 found 8 hours ago
United
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿23,335 Return, found 8 hours ago
฿23,335
Return
found 8 hours ago
Select United flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿23,335 found 8 hours ago
Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿23,560 Return, found 8 hours ago
฿23,560
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿23,560 found 8 hours ago
Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿23,565 Return, found 8 hours ago
฿23,565
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿23,565 found 8 hours ago
Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿23,760 Return, found 8 hours ago
฿23,760
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿23,760 found 8 hours ago
United
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿24,440 Return, found 8 hours ago
฿24,440
Return
found 8 hours ago
Select United flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿24,440 found 8 hours ago
Delta
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿24,730 Return, found 8 hours ago
฿24,730
Return
found 8 hours ago
Select Delta flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿24,730 found 8 hours ago
American Airlines
Sat, 22 Nov - Sun, 30 Nov
DEN
Denver
IAD
Washington
฿25,620 Return, found 8 hours ago
฿25,620
Return
found 8 hours ago
Select American Airlines flight, departing Sat, 22 Nov from Denver to Washington, returning Sun, 30 Nov, priced at ฿25,620 found 8 hours 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.
Flight from Denver to Washington route information
Origin airport
Denver Intl.
Destination airport
Washington Dulles Intl.
Return price
฿21,280
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 ฿4,750 and roundtrip prices from ฿21,280. 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 ฿21,280. 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.

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