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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$39 CHEAP FLIGHTS from Washington to Denver

DEN

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

...and more

Travelers love KAYAK

41,299,237 searches in the past 7 days on KAYAK

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Filter your dealsChoose cabin class, free Wi-Fi and more.

Cheapest round-trip

$68

Overall average: $158

Frontier

Fri 1/23Mon 1/26

SEA - DEN • Non-stop

Cheapest one-way

$39

Typical prices: $69-$188

Frontier

Thu 1/22

SEA - DEN • Non-stop

Start a new search

KAYAK searches 100s of sites at once to find you the best travel deals.

We hope you love your trip to Denver!

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.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Washington to Denver

Fri, Jan 23 - Mon, Jan 26

12:34 pm - 4:25 pm

SEA

DEN

2h 51mnonstop

9:10 am - 11:19 am

DEN

SEA

3h 09mnonstop

$68Frontier

Fri, Jan 23 - Mon, Jan 26

12:34 pm - 4:25 pm

SEA

DEN

2h 51mnonstop

9:10 am - 11:19 am

DEN

SEA

3h 09mnonstop

$69Frontier

Thu, Jan 22 - Mon, Jan 26

12:34 pm - 4:25 pm

SEA

DEN

2h 51mnonstop

9:10 am - 11:19 am

DEN

SEA

3h 09mnonstop

$70Frontier

Thu, Jan 29 - Sun, Feb 1

7:54 pm - 11:35 pm

SEA

DEN

2h 41mnonstop

9:10 am - 11:19 am

DEN

SEA

3h 09mnonstop

$73Multiple Airlines

Mon, Feb 9 - Fri, Feb 13

7:54 pm - 11:35 pm

SEA

DEN

2h 41mnonstop

8:45 am - 10:55 am

DEN

SEA

3h 10mnonstop

$75Multiple Airlines

Thu, Jan 29 - Thu, Feb 5

7:21 am - 10:53 am

PDX

DEN

2h 32mnonstop

11:49 am - 1:44 pm

DEN

PDX

2h 55mnonstop

$119Alaska Airlines

Thu, Jan 29 - Thu, Feb 5

5:35 pm - 11:35 pm

PDX

DEN

5h 00m1 stop

11:49 am - 1:44 pm

DEN

PDX

2h 55mnonstop

$129Alaska Airlines

Sat, Feb 7 - Tue, Feb 10

5:41 pm - 11:25 pm

PSC

DEN

4h 44m1 stop

6:29 am - 10:48 am

DEN

PSC

5h 19m1 stop

$183Delta

Wed, Feb 18 - Wed, Feb 25

5:45 pm - 11:25 pm

PSC

DEN

4h 40m1 stop

6:40 am - 10:41 am

DEN

PSC

5h 01m1 stop

$185Delta

Sat, Jan 31 - Tue, Feb 3

5:00 am - 8:40 am

PSC

DEN

2h 40mnonstop

7:30 pm - 9:13 pm

DEN

PSC

2h 43mnonstop

$209United Airlines

Useful Info

Low season	January
High season	July
Cheapest flight	$39

Best time to beat the crowds with an average 18% drop in price.

Most popular time to fly with an average 3% increase in price.

Flight from Seattle to Denver

Verified travelerFlew with Alaska Airlines

SEA

DEN

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

SEA

DEN

Apr 2025

Train from Denver airport to downtown is easy to use.

Verified travelerFlew with Alaska Airlines

SEA

DEN

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

GEG

DEN

Apr 2024

Time to switch planes should be more than 60 minutes.

Verified travelerFlew with United Airlines

PSC

DEN

Feb 2024

TSA doesn't open til 1030 so getting to the airport early isn't helpful

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.

Dillon

Westminster

Lakewood

Broomfield

Englewood

Greenwood Village

Central City

Lone Tree

Wheat Ridge

Limon

Brighton

Fort Morgan

Evergreen

Erie

Everything you need to know for your flight to Denver

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Denver

Denver (DEN)

DEN

$39 Find Cheap Flights from Washington to Denver

KAYAK searches hundreds of travel sites at once for deals on flights to Denver

Everything you should know

Cheap Flights from Washington to Denver

Recent round-trip flight deals from Washington to Denver

Recent one-way flight deals from Washington to Denver

Recent last minute flight deals from Washington to Denver

Recent direct flight deals from Washington to Denver

Good to know

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

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?

Everything you need to know for your flight to Denver

Information on the airport you'll fly into in Denver

Cabin class types available on flights to Washington

Complete your trip to Denver with a hotel stay or car rental

Find direct flights for Denver

Flights to other popular destinations

Flights from domestic origins to Denver

Choose which airport to fly into in Denver

Find deals for your return flight