DEN

$19 Find Cheap Flights from Washington to Denver

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Denver departing on 9/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

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Flight Deals

Cheap Flights from Washington to Denver

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Washington to Denver that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington to Denver

Fri, Nov 7 - Tue, Nov 11
Frontier Logo
2:22 pm - 6:13 pmSEA-DEN
2h 51mnonstop
Frontier Logo
10:00 am - 12:13 pmDEN-SEA
3h 13mnonstop
$94Frontier
Find Deal
Mon, Sep 29 - Sat, Oct 4
Frontier Logo
6:05 am - 9:44 amPDX-DEN
2h 39mnonstop
Frontier Logo
8:50 pm - 10:34 pmDEN-PDX
2h 44mnonstop
$95Frontier
Find Deal
Thu, Sep 25 - Sun, Sep 28
 Logo
11:53 am - 3:12 pmGEG-DEN
2h 19mnonstop
 Logo
7:00 am - 8:16 pmDEN-GEG
14h 16m1 stop
Sun, Oct 12 - Tue, Oct 21
 Logo
7:25 am - 10:58 amPDX-DEN
2h 33mnonstop
 Logo
9:58 am - 11:48 amDEN-PDX
2h 50mnonstop
Wed, Nov 19 - Sat, Nov 22
Alaska Airlines Logo
5:51 am - 12:27 pmGEG-DEN
5h 36m1 stop
Alaska Airlines Logo
6:14 am - 12:24 pmDEN-GEG
7h 10m1 stop
$211Alaska Airlines
Find Deal
Wed, Sep 24 - Thu, Sep 25
Hawaiian Airlines Logo
3:08 pm - 10:02 pmGEG-DEN
5h 54m1 stop
Hawaiian Airlines Logo
7:33 pm - 12:19 amDEN-GEG
5h 46m1 stop
$216Hawaiian Airlines
Find Deal
Wed, Sep 17 - Fri, Sep 19
Delta Logo
1:00 pm - 7:43 pmGEG-DEN
5h 43m1 stop
Delta Logo
5:45 am - 11:55 amDEN-GEG
7h 10m1 stop
$217Delta
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Fri, Sep 26 - Mon, Sep 29
Delta Logo
3:30 pm - 9:42 pmGEG-DEN
5h 12m1 stop
Delta Logo
6:25 pm - 11:35 pmDEN-GEG
6h 10m1 stop
$227Delta
Find Deal
Tue, Oct 14 - Tue, Oct 21
Alaska Airlines Logo
8:49 am - 5:21 pmPSC-DEN
7h 32m1 stop
Alaska Airlines Logo
3:02 pm - 9:19 pmDEN-PSC
7h 17m1 stop
$228Alaska Airlines
Find Deal
Wed, Sep 10 - Fri, Sep 12
Hawaiian Airlines Logo
1:05 pm - 10:02 pmPSC-DEN
7h 57m1 stop
Hawaiian Airlines Logo
7:33 pm - 12:08 amDEN-PSC
5h 35m1 stop
$269Hawaiian Airlines
Find Deal
Useful Info

Good to know

Low seasonApril
Cheapest flight$19
Best time to beat the crowds but there is an average 5% increase in price.
Most popular time to fly and prices are also 1% lower on average.
Flight from Spokane 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 
Verified travelerFlew with Alaska AirlinesSEA-DENMar 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 DeltaSEA-DENApr 2025
Train from Denver airport to downtown is easy to use.
Verified travelerFlew with Alaska AirlinesSEA-DENMay 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 AirlinesGEG-DENApr 2024
Time to switch planes should be more than 60 minutes.
Verified travelerFlew with United AirlinesPSC-DENFeb 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
Dillon
Westminster
Lakewood
Broomfield
Englewood
Central City
Wheat Ridge
Greenwood Village
Lone Tree
Limon
Fort Morgan
Brighton
Evergreen
Erie

Everything you need to know for your flight to Denver

Information on the airport you'll fly into in Denver

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