Washington to Denver flights
Routavio compares airline fares from several flight booking sites. The lowest one-way fare it found for Washington to Denver is €38 with Frontier Airlines (checked on 20 Oct 2026).
Your next trip, last seen at €38
Lowest observedFrontier Airlines · 1 stop · One wayWhen to fly
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The lowest fare we observed for each month. Open a month to see its days, then pick your outbound and return. A day with no price is one we will search for you.
One-way fare
- Lowest observed
- €38, departing 10 Nov 2026 (Last checked: 20 Oct 2026)One-way fare · Priced departure days checked in the last 14 days: 5Check live prices for this route
- Airlines seen
- Frontier Airlines
- Reported fastest flight
- 4h 09m
- Non-stop
- Yes
About this route
Explore the fares we observed from Washington to Denver. Prices move often, so pick your dates to see the latest options.
- Route distance
- 2,396 km
- Reported fastest flight
- 4h 09m
- Alternative airports
- DCA, APA
Route-level information; individual journeys vary.
Published schedules report non-stop service with Frontier Airlines, United Airlines, Southwest Airlines. Check current timetables.
A clearer picture of your fare
If the observed fare for this date drops, we will email you. At most one message a day.
Non-stop airlines seen on this route
| Airline | Non-stop days / priced days | Fastest non-stop |
|---|---|---|
| Frontier Airlines | 9 / 78 |
Departure days with a non-stop fare checked in the last 14 days. A carrier listed here had a non-stop fare on at least 3 days; schedules may differ.
Airport to city: straight-line distance
- Ronald Reagan Washington National Airport (DCA) → Washington, city gazetteer reference point (38.8951, -77.0364): ≈ 5 km.
- Washington Dulles International Airport (IAD) → Washington, city gazetteer reference point (38.8951, -77.0364): ≈ 37 km.
- Denver International Airport (DEN) → Denver, city gazetteer reference point (39.7392, -104.9847): ≈ 30 km.
Approximate distances calculated from coordinates, not road distances or travel times. These airports serve the city; they are not confirmed endpoints of an offer.
Frequently asked
How much is a flight from Washington to Denver?
The lowest fare Routavio has observed is €38, found on 20 Oct 2026. Prices move, so read it as a floor rather than a quote.
When is the cheapest month to fly from Washington to Denver?
In our observations November 2026 is the cheapest month so far, at €38.
Are there direct flights from Washington to Denver?
Yes. Published schedules report non-stop flights on this route with Frontier Airlines, United Airlines, Southwest Airlines.
Which airlines fly from Washington to Denver?
Routavio has seen these carriers on the route: Frontier Airlines.
How long does the flight from Washington to Denver take?
Across the 78 fares Routavio observed, the average journey time is 11h 52m, including any stops. Individual departures vary; the fastest observed flight is listed in the route facts above.
How many of the observed Washington to Denver fares were non-stop?
13 of the 86 fares we observed were non-stop; the rest included at least one stop. That describes our observations, not every flight that operates.
Which airlines had non-stop offers on at least 3 departure dates from Washington to Denver?
For Washington to Denver, examples of observed one-way non-stop offers checked within the last 14 days: Frontier Airlines (9). Each number counts distinct departure dates, not weekly flights; check current availability in search.
How observed prices work, what "No data" means and what a fare includes: Read the flight price guide · Price and schedule freshness on Routavio
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Recently observed fares. Prices may change.