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.

$79 CHEAP FLIGHTS from Washington to Denver

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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

Tue, Oct 20 - Sat, Oct 24

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

2h 50mnonstop

6:42 pm - 8:58 amDEN Denver Intl-SEA Seattle/Tacoma Intl

15h 16m1 stop Las Vegas Harry Reid Intl

$149Frontier

Wed, Dec 2 - Wed, Dec 9

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

2h 48mnonstop

10:29 pm - 8:48 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

23h 19m1 stop Los Angeles

$149Frontier

Tue, Oct 6 - Tue, Oct 6

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

2h 54mnonstop

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

$166Multiple Airlines

Sat, Nov 7 - Tue, Nov 10

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

2h 48mnonstop

12:12 pm - 2:15 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 03mnonstop

$170Multiple Airlines

Sun, Dec 13 - Sun, Jan 3

5:05 am - 8:42 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 37mnonstop

11:30 am - 1:35 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 05mnonstop

$182United Airlines

Wed, Dec 16 - Sun, Jan 3

12:50 pm - 4:27 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 37mnonstop

7:40 am - 9:49 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 09mnonstop

$189United Airlines

Tue, Nov 10 - Sat, Nov 14

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

2h 52mnonstop

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

3h 04mnonstop

$194Alaska Airlines

Wed, Nov 11 - Wed, Nov 11

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

2h 52mnonstop

6:37 pm - 8:41 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 04mnonstop

$195Alaska Airlines

Sat, Jan 30 - Wed, Feb 24

10:00 am - 1:40 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 40mnonstop

3:20 pm - 9:35 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

7h 15m1 stop Oakland

$206Southwest

Sat, Feb 20 - Sat, Feb 27

10:55 am - 2:30 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 35mnonstop

1:35 pm - 8:50 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

8h 15m2 stops Palm Springs Oakland

$211Southwest

Recent last minute flight deals from Washington to Denver

Mon, Sep 28 - Thu, Oct 1

4:27 pm - 8:21 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

$174Frontier

Sun, Sep 27 - Thu, Oct 1

4:27 pm - 8:21 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

$174Frontier

Thu, Sep 24 - Tue, Oct 27

4:27 pm - 8:21 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

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

3h 01mnonstop

$339Multiple Airlines

Fri, Sep 25 - Tue, Oct 27

4:27 pm - 8:21 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 54mnonstop

12:00 pm - 1:59 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

2h 59mnonstop

$344Multiple Airlines

Wed, Sep 23 - Tue, Sep 29

7:32 pm - 11:19 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 47mnonstop

7:08 pm - 9:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 00mnonstop

$345Alaska Airlines

Tue, Sep 29 - Tue, Oct 13

12:21 pm - 6:32 pmPAE Everett Paine Field-DEN Denver Intl

5h 11m1 stop Portland

7:53 am - 12:02 pmDEN Denver Intl-PAE Everett Paine Field

5h 09m1 stop Portland

$428Alaska Airlines

Fri, Sep 25 - Mon, Sep 28

3:25 pm - 11:47 pmPSC Pasco Tri Cities-DEN Denver Intl

7h 22m1 stop Seattle/Tacoma Intl

6:00 am - 11:56 amDEN Denver Intl-PSC Pasco Tri Cities

6h 56m1 stop Seattle/Tacoma Intl

$449Delta

Sat, Sep 26 - Fri, Oct 2

5:30 am - 6:50 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

12h 20m2 stops Las Vegas Harry Reid Intl Chicago Midway

5:55 pm - 12:35 amDEN Denver Intl-SEA Seattle/Tacoma Intl

7h 40m1 stop Chicago Midway

$484Southwest

Mon, Sep 28 - Fri, Oct 2

5:30 am - 2:00 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

7h 30m1 stop Sacramento Intl

1:45 pm - 9:00 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

8h 15m2 stops Los Angeles Las Vegas Harry Reid Intl

$484Southwest

Thu, Sep 24 - Sun, Sep 27

6:10 am - 12:09 pmPSC Pasco Tri Cities-DEN Denver Intl

4h 59m1 stop Salt Lake City

6:06 pm - 11:28 pmDEN Denver Intl-PSC Pasco Tri Cities

6h 22m1 stop Salt Lake City

$509Delta

Recent direct flight deals from Washington to Denver

Fri, Dec 18 - Mon, Jan 4

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

2h 51mnonstop

1:55 pm - 4:06 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 11mnonstop

$150Frontier

Mon, Jan 18 - Mon, Jan 25

4:29 pm - 8:19 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 50mnonstop

1:03 pm - 3:14 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 11mnonstop

$150Frontier

Tue, Oct 6 - Tue, Oct 6

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

2h 54mnonstop

1:07 pm - 3:08 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 01mnonstop

$166Multiple Airlines

Sat, Nov 7 - Tue, Nov 10

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

2h 48mnonstop

12:12 pm - 2:15 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 03mnonstop

$170Multiple Airlines

Sun, Dec 13 - Sun, Jan 3

5:05 am - 8:42 amSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 37mnonstop

11:30 am - 1:35 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 05mnonstop

$182United Airlines

Wed, Dec 16 - Sun, Jan 3

12:50 pm - 4:27 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 37mnonstop

7:40 am - 9:49 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 09mnonstop

$189United Airlines

Tue, Nov 10 - Sat, Nov 14

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

2h 52mnonstop

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

3h 04mnonstop

$194Alaska Airlines

Wed, Nov 11 - Wed, Nov 11

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

2h 52mnonstop

6:37 pm - 8:41 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 04mnonstop

$195Alaska Airlines

Fri, Nov 13 - Fri, Nov 13

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

2h 47mnonstop

6:35 pm - 8:42 pmDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 07mnonstop

$293Delta

Sat, Jan 9 - Tue, Jan 12

7:40 pm - 11:28 pmSEA Seattle/Tacoma Intl-DEN Denver Intl

2h 48mnonstop

6:45 am - 8:59 amDEN Denver Intl-SEA Seattle/Tacoma Intl

3h 14mnonstop

$307Delta

Useful Info

Low season	April
High season	July
Cheapest flight	$79

Best time to beat the crowds with an average 10% drop in price.

Most popular time to fly with an average 21% increase in price.

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

Limon

Brighton

Wheat Ridge

Fort Morgan

Evergreen

Erie

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DEN

$79 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

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High season

Cheapest flight

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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