Cheap flights from Washington to Denver
from 82 US$
From 179 USD — compare hundreds of airlines
The cheapest month is usually 2026-09 · 82 US$
See prices for my dates →Live fares from 100+ sites — free, with no hidden fees.
About this route
Compare flights from Washington to Denver, a about 2,396 km route (around 3h 30m nonstop). We gather live prices from hundreds of airlines and agencies so you can find the cheapest and book on the official site, with no hidden fees. Direct flights are available. Airlines such as Frontier Airlines, United Airlines, Southwest Airlines operate this route.
When to buy and when to fly
Prices by date
Fares found by date — cheapest days in green.
How to get the best price
Airlines on this route
FAQ
What's the cheapest month to fly Washington to Denver?
It's usually 2026-09, from 82 USD. Use the price calendar to compare other dates.
How long is the flight from Washington to Denver?
A nonstop flight takes about 3h 30m and covers around 2,396 km. Connecting itineraries take longer.
Are there direct flights from Washington to Denver?
Yes, this route has nonstop flights. Filter by "nonstop" to see them.
Which airlines fly from Washington to Denver?
Frontier Airlines, United Airlines, Southwest Airlines operate this route, among others. Compare them all in the results.
When should I book Washington–Denver flights?
As a rule of thumb, booking 3–8 weeks ahead and avoiding weekends and holidays tends to give the best prices. Use the calendar to spot the cheapest dates.
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Washington → Denver · Live fares from 100+ sites — free, with no hidden fees.