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.

$80 CHEAP FLIGHTS from Washington to Denver

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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.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Washington to Denver

Wed, Nov 18 - Wed, Nov 25

4:27 pm - 8:15 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 48mnonstop

11:10 am - 12:37 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

26h 27m2 stops Salt Lake City Las Vegas Harry Reid Intl

$160Frontier

Sun, Nov 8 - Tue, Nov 10

10:06 am - 1:58 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 52mnonstop

10:55 pm - 6:33 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

20h 38m1 stop Los Angeles

$160Multiple Airlines

Wed, Nov 18 - Mon, Nov 30

7:48 pm - 9:45 amSEA Seattle/Tacoma Intl-DEN Denver Intl

12h 57m1 stop Los Angeles

1:14 pm - 3:22 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 08mnonstop

$162Frontier

Sun, Feb 7 - Sat, Feb 13

4:00 pm - 7:45 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 45mnonstop

5:52 pm - 11:34 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

6h 42m1 stop San Francisco

$163United Airlines

Tue, Oct 27 - Thu, Oct 29

12:14 pm - 9:48 amSEA Seattle/Tacoma Intl-DEN Denver Intl

20h 34m1 stop Las Vegas Harry Reid Intl

5:57 pm - 7:58 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

$165Multiple Airlines

Mon, Nov 16 - Wed, Nov 18

11:35 am - 6:30 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

5h 55m1 stop Sacramento Intl

3:40 pm - 5:50 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 10mnonstop

$167Southwest

Tue, Nov 10 - Thu, Nov 12

10:35 am - 5:10 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

5h 35m1 stop Long Beach Municipal

6:15 am - 8:25 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 10mnonstop

$167Southwest

Mon, Nov 9 - Tue, Nov 10

8:30 am - 12:17 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 47mnonstop

7:05 am - 12:40 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

6h 35m1 stop Los Angeles

$167Delta

Fri, Nov 6 - Fri, Nov 13

8:00 pm - 11:55 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 55mnonstop

5:25 am - 9:07 amDEN Denver Intl-SEA Seattle/Tacoma Intl

4h 42m1 stop Salt Lake City

$167Delta

Fri, Nov 6 - Tue, Nov 10

7:04 pm - 10:45 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 41mnonstop

7:40 am - 9:47 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 07mnonstop

$176United Airlines

Recent last minute flight deals from Washington to Denver

Tue, Oct 13 - Mon, Nov 9

4:27 pm - 8:17 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 50mnonstop

1:04 pm - 3:12 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 08mnonstop

$227Frontier

Tue, Oct 13 - Wed, Nov 11

4:27 pm - 8:17 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 50mnonstop

1:04 pm - 3:12 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 08mnonstop

$228Frontier

Fri, Oct 9 - Sun, Nov 8

10:13 am - 2:08 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 55mnonstop

7:03 am - 9:07 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 04mnonstop

$393Alaska Airlines

Sat, Oct 10 - Sun, Nov 8

7:08 am - 11:02 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

7:03 am - 9:07 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 04mnonstop

$393Alaska Airlines

Tue, Oct 13 - Sat, Oct 17

5:19 pm - 10:40 pmPSC Pasco Tri Cities-DEN Denver Intl

4h 21m1 stop Salt Lake City

6:42 pm - 10:46 pmDEN Denver Intl-PSC Pasco Tri Cities

5h 04m1 stop Seattle/Tacoma Intl

$414Delta

Sat, Oct 10 - Mon, Nov 9

6:30 am - 2:35 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

7h 05m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

10:20 am - 3:05 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

5h 45m1 stop San Jose

$418Southwest

Mon, Oct 12 - Sat, Oct 17

4:27 pm - 8:17 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 50mnonstop

7:07 am - 9:10 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 03mnonstop

$435Multiple Airlines

Sun, Oct 11 - Mon, Oct 12

7:08 am - 11:02 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

1:07 pm - 3:12 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 05mnonstop

$435Multiple Airlines

Tue, Oct 13 - Tue, Nov 10

9:05 am - 12:49 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 44mnonstop

6:33 pm - 8:40 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 07mnonstop

$448Delta

Sat, Oct 10 - Sat, Oct 17

2:05 pm - 9:00 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

5h 55m1 stop San Diego

8:45 am - 3:35 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

7h 50m2 stops Fresno Airterminal Las Vegas Harry Reid Intl

$484Southwest

Recent direct flight deals from Washington to Denver

Fri, Dec 4 - Mon, Dec 7

4:58 pm - 8:46 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 48mnonstop

1:32 pm - 3:43 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 11mnonstop

$168Frontier

Sat, Oct 31 - Mon, Nov 2

4:27 pm - 8:15 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 48mnonstop

7:03 am - 9:07 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 04mnonstop

$168Multiple Airlines

Tue, Nov 10 - Thu, Nov 12

10:06 am - 1:58 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 52mnonstop

3:25 pm - 5:27 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 02mnonstop

$169Alaska Airlines

Tue, Nov 10 - Wed, Nov 11

7:23 am - 11:14 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 51mnonstop

3:25 pm - 5:27 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 02mnonstop

$169Alaska Airlines

Wed, Oct 21 - Sat, Oct 24

4:27 pm - 8:17 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 50mnonstop

1:07 pm - 3:12 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 05mnonstop

$170Frontier

Sun, Nov 8 - Fri, Nov 13

8:00 pm - 11:55 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 55mnonstop

6:00 am - 8:12 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 12mnonstop

$171Delta

Sun, Nov 8 - Wed, Nov 11

8:00 pm - 11:55 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 55mnonstop

6:00 am - 8:12 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 12mnonstop

$171Delta

Wed, Dec 30 - Sat, Jan 2

5:25 pm - 9:16 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 51mnonstop

6:00 am - 8:10 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 10mnonstop

$172Multiple Airlines

Fri, Nov 6 - Tue, Nov 10

7:04 pm - 10:45 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 41mnonstop

7:40 am - 9:47 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 07mnonstop

$176United Airlines

Fri, Nov 6 - Tue, Nov 10

7:04 pm - 10:45 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 41mnonstop

7:40 am - 9:47 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 07mnonstop

$176United Airlines

Useful Info

Low season	April
High season	December
Cheapest flight	$80

Best time to beat the crowds with an average 11% drop in price.

Most popular time to fly and prices are also 5% lower on average.

Flight from Seattle 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

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.

Westminster

Lakewood

Dillon

Broomfield

Englewood

Greenwood Village

Lone Tree

Central City

Brighton

Limon

Wheat Ridge

Fort Morgan

Evergreen

Erie

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DEN

$80 Find Cheap Flights from Washington to Denver - Compare and Save

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

Low season

High season

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

FAQs for booking flights from Washington to Denver

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

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