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$86 Find Cheap Flights from Washington to Denver - Compare and Save

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1 adult, Economy, 0 bags

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Flight Deals

Cheap Flights from Washington to Denver

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington to Denver

Fri, Dec 4 - Wed, Dec 16
Frontier Logo
1:32 pm - 3:14 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
24h 42m1 stop Los Angeles
Frontier Logo
1:32 pm - 3:43 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 11mnonstop
$161Frontier
Fri, Nov 20 - Thu, Nov 26
Frontier Logo
4:37 pm - 8:25 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 48mnonstop
Frontier Logo
1:14 pm - 3:22 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 08mnonstop
$161Frontier
Tue, Dec 8 - Sat, Dec 12
Multiple Airlines Logo
8:09 pm - 10:06 amSEA  Seattle/Tacoma Intl-DEN Denver Intl
12h 57m1 stop San Diego
Multiple Airlines Logo
1:32 pm - 3:43 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 11mnonstop
$212Multiple Airlines
Wed, Dec 9 - Tue, Dec 15
Multiple Airlines Logo
4:58 pm - 8:48 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 50mnonstop
Multiple Airlines Logo
10:29 pm - 9:32 amDEN  Denver Intl-SEA Seattle/Tacoma Intl
12h 03m1 stop San Diego
$212Multiple Airlines
Fri, Dec 11 - Fri, Dec 11
Alaska Airlines Logo
5:01 am - 11:10 amGEG  Spokane-DEN Denver Intl
5h 09m1 stop Seattle/Tacoma Intl
Alaska Airlines Logo
2:51 pm - 6:42 pmDEN  Denver Intl-GEG Spokane
4h 51m1 stop Portland
$231Alaska Airlines
Thu, Dec 3 - Mon, Dec 7
Alaska Airlines Logo
12:26 pm - 9:28 pmGEG  Spokane-DEN Denver Intl
8h 02m1 stop Portland
Alaska Airlines Logo
7:24 pm - 11:58 pmDEN  Denver Intl-GEG Spokane
5h 34m1 stop Seattle/Tacoma Intl
$237Alaska Airlines
Wed, Dec 2 - Tue, Dec 8
Delta Logo
7:59 pm - 11:48 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 49mnonstop
Delta Logo
6:35 pm - 8:46 pmDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 11mnonstop
$257Delta
Tue, Dec 8 - Sat, Dec 12
Delta Logo
8:30 am - 12:22 pmSEA  Seattle/Tacoma Intl-DEN Denver Intl
2h 52mnonstop
Delta Logo
6:00 am - 8:18 amDEN  Denver Intl-SEA Seattle/Tacoma Intl
3h 18mnonstop
$257Delta
Thu, Dec 3 - Mon, Dec 7
Southwest Logo
1:35 pm - 4:40 pmGEG  Spokane-DEN Denver Intl
2h 05mnonstop
Southwest Logo
8:15 pm - 9:55 pmDEN  Denver Intl-GEG Spokane
2h 40mnonstop
$257Southwest
Tue, Dec 1 - Sat, Dec 5
Southwest Logo
1:35 pm - 4:40 pmGEG  Spokane-DEN Denver Intl
2h 05mnonstop
Southwest Logo
7:40 pm - 9:10 pmDEN  Denver Intl-GEG Spokane
2h 30mnonstop
$257Southwest
Useful Info

Good to know

Low season

April

Cheapest flight

$86
Best time to beat the crowds with an average 14% drop in price.
Most popular time to fly with an average 17% increase in price.
Flight from Seattle to Denver

Flights from Washington to Denver: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Washington to Denver 
DebraFlew with Alaska Airlines-Feb 2026
Seattle TSA much improved. Faster service. Baggage check-in ok. I'm sure will get faster as people get used to it.
Verified travelerFlew with Alaska Airlines-Mar 2025
Alaska Air is very efficient & on-time so allow enough time to get luggage, go thru Customs & Immigration, & long security lines. Terminals in SEA are readily accessible by trains but more signage is needed. Fortunately, Information booths are everywhere & are manned by very helpful staff.
MichaelFlew with Delta-Apr 2025
Train from Denver airport to downtown is easy to use.
Verified travelerFlew with Alaska Airlines-May 2024
When flying from Seattle to Denver, be ready to take our any electronics and put them in separate bins when going through security. You will also most likely have to take off your jacket as well. During our flight back the flight randomly changed so be on the lookout in case that happens to you! It was by chance that I checked my ticket and saw that the gate changed last minute.
Verified travelerFlew with United Airlines-Apr 2024
Time to switch planes should be more than 60 minutes.
Verified travelerFlew with United Airlines-Feb 2024
TSA doesn't open til 1030 so getting to the airport early isn't helpful

FAQs for booking flights from Washington to Denver

  • How does KAYAK find such low prices on flights from Washington to Denver?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Washington to Denver.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Washington to Denver?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Denver from Washington is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Washington to Denver?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Denver with an airline and back to Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington to Denver?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Denver from Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Denver?

Book flights to Denver if you plan to visit one of these locations
Westminster
Lakewood
Dillon
Broomfield
Englewood
Greenwood Village
Lone Tree
Central City
Brighton
Limon
Wheat Ridge
Fort Morgan
Evergreen
Erie

More options for your flight to Denver