Cheap Flights From Washington Dulles Intl. (IAD) To Denver Intl. (DEN)

Wander Wisely with exceptional service, 24/7 supportOpens in a new window

Feel at ease with free flight cancellations within 24 hours of booking

Change your flight without a fee on select flights

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

The cheapest flights to Denver Intl. found within the past 7 days were CA $306 round trip and CA $168 one way. Prices and availability subject to change. Additional terms may apply.

Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $306 Roundtrip, found 4 days ago
CA $306
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $306 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $354 Roundtrip, found 4 days ago
CA $354
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $354 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $399 Roundtrip, found 4 days ago
CA $399
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $399 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $402 Roundtrip, found 4 days ago
CA $402
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $402 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $403 Roundtrip, found 4 days ago
CA $403
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $403 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $418 Roundtrip, found 4 days ago
CA $418
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $418 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $430 Roundtrip, found 4 days ago
CA $430
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $430 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $451 Roundtrip, found 4 days ago
CA $451
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $451 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $466 Roundtrip, found 4 days ago
CA $466
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $466 found 4 days ago
Fri, Sep. 12 - Thu, Sep. 18
IAD
Washington
DEN
Denver
CA $467 Roundtrip, found 4 days ago
CA $467
Roundtrip
found 4 days ago
Select American Airlines flight, departing Fri, Sep. 12 from Washington to Denver, returning Thu, Sep. 18, priced at CA $467 found 4 days ago

Frequently asked questions

Are there direct flights from Washington Dulles Intl. Airport (IAD) to Denver Airport?
United Airlines and Southwest Airlines are among the airlines that operate nonstop flights from Dulles Intl. Airport to Denver Airport. If you're keen to get to your destination fast, these are the airlines for you.
What airlines fly from Dulles Intl. Airport to DEN?
If you want to get to Denver from Sterling, there are several airlines advertising direct flights. One of the most popular is United Airlines (UA), which operates 199 flights on this route each month. If that's not enough for you, look up Southwest Airlines (WN). This airline has 47 flights every month. Between the two, we're sure you'll find a deal that's perfect for you.
What is the best day to buy a plane ticket?
Airfares offered on Friday tend to be the cheapest, according to flight demand on Travelocity.ca in 2021. Purchasing your airfares on a Thursday or Saturday can also provide better value, however our advice if you're looking to save money is to avoid booking on a Wednesday or Sunday. Our data shows that those two days have the highest ticket values on average, so keep this in mind if you're browsing flight deals.
What are the cheapest days to fly?
Frequent travellers may already know this, but earlier in the week is often the cheapest time to fly. Flights departing on a Monday are the cheapest of the week. Since flights towards the middle of the week tend to be more popular, this causes the prices to rise. This is why, on average, airfares booked on Travelocity.ca in 2021 were most expensive for Wednesday departures.
How far in advance can you book a flight?
Here's the deal: It is typically possible to start comparing international airfares on Travelocity.ca up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2-4 weeks prior to their travel dates.*According to flight demand on Travelocity.ca from January to December 2021. Savings are subject to change and may vary depending on selections made.

Popular Flight Routes from Washington (IAD)

Travelers at IAD love to visit these top cities. Roam to the top destinations from Washington (IAD) today with the cheap prices from Travelocity!

Popular Flight Routes from Denver (DEN)

Travelers at DEN love to visit these top cities. Roam to the top destinations from Denver(DEN) today with the cheap prices from Travelocity!

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.