Washington to Denver flights
The cheapest round trip we found from Washington to Denver is $306 (Dec 18 – 20, 1 stop).
WAS to DEN · Round trip · Economy · Prices per person in USD · Price found (3 hours ago)
Cheapest found
Cheapest round trip by month
Lowest fare found per departure month| Month | Cheapest round trip |
|---|---|
| November 2026 | $355 |
| December 2026 | $306 (cheapest month) |
Cheapest dates in the next 4 months
Round trip, per person-
Dec 18 – 20 2 nights · leave Fri$306$306 Book
Frontier Airlines 1 stop · 5h 32m -
Nov 23 – 30 7 nights · leave Mon$355$355 Book
Frontier Airlines 1 stop · 7h 21m
Prices change often. The booking site shows the final price before you pay. Other dates? Set an alert
Plan the rest of your trip
Denver · Dec 18 – 20- Car rental Economybookings · compare rental companies (opens Economybookings in a new tab)
- Things to do in Denver Klook · tours and tickets (opens Klook in a new tab)
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Washington to Denver: questions
How much does a flight from Washington to Denver cost?
The cheapest round trip we have found right now is $306, leaving December 18 and returning December 20. Prices are per person, economy, in USD.
Which airports do Washington to Denver flights use?
Washington airports include Washington Dulles International (IAD) and Ronald Reagan National (DCA). Denver airports include Denver International (DEN) and Centennial (APA). The prices on this page cover every airport in both cities (WAS and DEN are the city codes).
About this route
We track round-trip economy fares from Washington (United States) to Denver (United States) using Travelpayouts / Aviasales data. The cheapest round trip we've found is $306, departing December 18 and returning December 20. The cheapest month to fly in our data is December, from $306. Prices are per person and were correct when found; the final price is set by the airline or booking site when you book.