Cheap flights from Denver to Seattle from $64

Round-trip
1 adult
Economy
From?
To?
Mon 7/4
Mon 7/11

Deals available from 900+ travel sites.

Flight information for Denver to Seattle
(DEN to SEA)

Find info about flight duration, direct flights, and airports for your flight from Denver to Seattle

Best Price Found

$64

Fastest flight time

2h 55m

Direct flights

Mon, Tue, Thu, Fri, Sat and Sun

Airports in Seattle

3 airports
The best one-way flight to Seattle from Denver in the past 72 hours is $64. The best round-trip flight deal from Denver to Seattle found on momondo in the last 72 hours is $128.
The fastest flight from Denver to Seattle takes 2h 55m
Direct flights go from Denver to Seattle on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: Alaska Airlines and Air France.
There are 3 airports near Seattle: Seattle King County/Boeing (BFI), Seattle Lake Union Spb (LKE), Seattle/Tacoma Intl (SEA)

How to get the cheapest flight ticket from Denver to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from Denver to Seattle?

October

The cheapest time of year to fly to Seattle from Denver is October. Most expensive is May

What is the cheapest day to depart Denver for Seattle?

Friday

The cheapest day of the week is typically Friday. The most expensive is typically Sunday

When is the cheapest time to fly from Denver to Seattle?

in the evening

Denver to Seattle flights are approximately 26% more expensive in the afternoon than in the evening

What is the cheapest airline that flies to Seattle from Denver?

Juneyao Airlines

Alaska Airlines, Delta, and Frontier are the most popular carriers operating from Denver to Seattle

What is the cheapest Denver to Seattle flight route?

Denver Intl - Seattle/Tacoma Intl

Fly from Denver Intl to Seattle/Tacoma Intl for the best Denver - Seattle flight prices

How far in advance should you book Denver to Seattle flights?

33 days before

The cheapest time to buy a flight from Denver to Seattle is approximately 33 days to departure

When you’re planning your trip from Denver to Seattle, the most popular airport-to-airport route is Denver Intl Airport to Seattle/Tacoma Intl Airport. You may be looking for an airport near Denver Intl Airport to depart from when traveling to Seattle and Colorado Springs Airport, located in Colorado Springs is a great option. You may be looking for an airport near Seattle/Tacoma Intl Airport to land at when traveling from Denver and Everett Paine Field Airport, located in Everett is a great option. The cheapest route from Denver to Seattle is DEN — SEA with an average price of $128 RT during the month of June.

Denver Intl Airport (DEN) to Seattle/Tacoma Intl Airport (SEA)$128
Search Flight Deals
Colorado Springs Airport (COS) to Seattle/Tacoma Intl Airport (SEA)$256
Search Flight Deals
Denver Intl Airport (DEN) to Everett Paine Field Airport (PAE)$321
Search Flight Deals

Easily compare round-trip flights from Denver to Seattle

Below you can see the best fares for your round-trip flight route over the next three months. All fares were found on momondo this week. Browse the quickest and cheapest flights from Denver to Seattle by changing tabs
Alaska Airlines
Nov 2
DEN3:00 amDenver Intl
3h 11m
SEA6:11 amSeattle/Tacoma Intl
Nov 10
SEA2:55 pmSeattle/Tacoma Intl
2h 36m
DEN5:31 pmDenver Intl
Frontier
Sep 13
DEN2:30 amDenver Intl
3h 06m
SEA5:36 amSeattle/Tacoma Intl
Sep 28
SEA4:00 pmSeattle/Tacoma Intl
2h 50m
DEN6:50 pmDenver Intl
Multiple Airlines
Aug 19
DEN2:00 amDenver Intl
3h 05m
SEA5:05 amSeattle/Tacoma Intl
Aug 30
SEA4:11 pmSeattle/Tacoma Intl
2h 47m
DEN6:58 pmDenver Intl
Delta
Oct 5
DEN2:35 amDenver Intl
3h 05m
SEA5:40 amSeattle/Tacoma Intl
Oct 12
SEA3:59 pmSeattle/Tacoma Intl
2h 38m
DEN6:37 pmDenver Intl
Alaska Airlines
Nov 1
DEN3:00 amDenver Intl
3h 11m
SEA6:11 amSeattle/Tacoma Intl
Nov 6
SEA1:30 amSeattle/Tacoma Intl
2h 42m
DEN3:12 amDenver Intl
Frontier
Sep 13
DEN2:30 amDenver Intl
3h 06m
SEA5:36 amSeattle/Tacoma Intl
Sep 20
SEA5:21 amSeattle/Tacoma Intl
2h 47m
DEN8:08 amDenver Intl

Find the cheapest one-way flights from Denver to Seattle

If you're looking for one-way flights from Denver to Seattle, view some of our deals below provided by Alaska Airlines, Delta and Frontier
Alaska Airlines
Oct 1
DEN3:00 amDenver Intl
3h 02m
SEA6:02 amSeattle/Tacoma Intl
Frontier
Sep 13
DEN2:30 amDenver Intl
3h 06m
SEA5:36 amSeattle/Tacoma Intl
Delta
Oct 1
DEN2:35 amDenver Intl
3h 05m
SEA5:40 amSeattle/Tacoma Intl

Search last-minute flights to Seattle from Denver

Find and compare round-trip flight prices for your last-minute flight from Denver to Seattle
Multiple Airlines
Jul 7
DEN5:45 pmDenver Intl
26h 42m
1 stop
SEA8:27 pmSeattle/Tacoma Intl
Jul 13
SEA6:53 amSeattle/Tacoma Intl
2h 46m
DEN9:39 amDenver Intl
Frontier
Jul 8
DEN6:49 pmDenver Intl
12h 18m
1 stop
SEA7:07 amSeattle/Tacoma Intl
Aug 11
SEA5:14 pmSeattle/Tacoma Intl
2h 47m
DEN8:01 pmDenver Intl
Spirit Airlines
Jul 6
DEN3:49 pmDenver Intl
16h 20m
1 stop
SEA8:09 amSeattle/Tacoma Intl
Jul 13
SEA2:00 amSeattle/Tacoma Intl
11h 42m
1 stop
DEN1:42 pmDenver Intl
Multiple Airlines
Jul 9
DEN6:54 pmDenver Intl
13h 15m
1 stop
SEA8:09 amSeattle/Tacoma Intl
Aug 11
SEA5:14 pmSeattle/Tacoma Intl
2h 47m
DEN8:01 pmDenver Intl
Frontier
Jul 8
DEN12:48 pmDenver Intl
3h 04m
SEA3:52 pmSeattle/Tacoma Intl
Aug 11
SEA5:14 pmSeattle/Tacoma Intl
2h 47m
DEN8:01 pmDenver Intl
Spirit Airlines
Jul 7
DEN5:45 pmDenver Intl
26h 42m
1 stop
SEA8:27 pmSeattle/Tacoma Intl
Jul 13
SEA2:00 amSeattle/Tacoma Intl
11h 42m
1 stop
DEN1:42 pmDenver Intl

Best airlines flying from Denver to Seattle

Compare and see reviews for airlines that fly from Denver to Seattle with momondo
AirlineRatingFree CancellationPrice
Juneyao AirlinesPriceFrom $12Free CancellationRating
0.0
Search Juneyao Airlines flights
FrontierPriceFrom $59Free CancellationRating
6.2
6.4

Boarding

5.8

Comfort

7.0

Crew

4.7

Entertainment

5.0

Food

Reviews

Newer planes being acquired at least have a small tray for working or reading or to set down a drink. Most seats do not recline, and space is tight. If you are over 6' tall consider paying extra for a seat with extra legroom.

1 / 10
Search Frontier flights
Spirit AirlinesPriceFrom $76Free CancellationRating
6.2
6.4

Boarding

5.9

Comfort

7.0

Crew

4.9

Entertainment

5.1

Food

Reviews

We arrived 15 minutes early ,but the luggage take more than 30 minutes to appear.

1 / 10
Search Spirit Airlines flights
DeltaPriceFrom $78Free CancellationRating
7.8
7.9

Boarding

8.0

Comfort

8.3

Crew

7.7

Entertainment

7.3

Food

Reviews

One of the crew member weren’t to pleasant

1 / 10
Search Delta flights
Alaska AirlinesPriceFrom $78Free CancellationRating
7.9
8.2

Boarding

7.9

Comfort

8.5

Crew

7.2

Entertainment

7.1

Food

Reviews

Movies/screens

1 / 10
Search Alaska Airlines flights
United AirlinesPriceFrom $78Free CancellationRating
7.2
7.5

Boarding

7.1

Comfort

8.0

Crew

6.9

Entertainment

6.5

Food

Reviews

The cabin was nice and cool and there was ample room! The only downside was there were only paid snacks and drinks - not even free coffee or tea or pretzels!

1 / 10
Search United Airlines flights
American AirlinesPriceFrom $138Free CancellationRating
7.0
7.4

Boarding

7.1

Comfort

8.0

Crew

6.8

Entertainment

6.4

Food

Reviews

They cancel flight last minute and didn’t have a flight coming to the airport I booked. Even though I had to rebook to another airport it’s a 1hr and 20 from my home instead of 5-7 minutes. It’s a inconvenience because I’m pushing for time because I have to get back home and get ready for work. I’m very tired and disappointed in the airlines for doing that and should be compensated for it once again.

1 / 10
Search American Airlines flights
  • Alaska Airlines Flights From Denver to Seattle

    Alaska Airlines operates around 10 flights from Denver to Seattle every week. The average price of these flights found in the last 72 hours has been $206, but momondo users have found Alaska Airlines deals from Denver to Seattle from as low as $78 round-trip. Alaska Airlines has been scored 7.9/10 in 668 reviews.

  • Delta Flights From Denver to Seattle

    The best Delta deal for Denver to Seattle flight tickets found on momondo in the last 72 hours was $78, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $199 round-trip. Delta operates 12 flights out of Denver into Seattle in an average week, so prices vary by time and availability. 392 Delta reviews by users on momondo have scored the airline at 7.8/10.


Alaska Airlines flights from Denver to Seattle

Our best Alaska Airlines deals on Denver to Seattle flight tickets
Alaska Airlines
Nov 2
DEN3:00 amDenver Intl
3h 11m
SEA6:11 amSeattle/Tacoma Intl
Nov 10
SEA2:55 pmSeattle/Tacoma Intl
2h 36m
DEN5:31 pmDenver Intl
Alaska Airlines
Nov 1
DEN3:00 amDenver Intl
3h 11m
SEA6:11 amSeattle/Tacoma Intl
Nov 6
SEA1:30 amSeattle/Tacoma Intl
2h 42m
DEN3:12 amDenver Intl
Alaska Airlines
Oct 4
DEN3:00 amDenver Intl
3h 02m
SEA6:02 amSeattle/Tacoma Intl
Oct 14
SEA3:55 pmSeattle/Tacoma Intl
2h 36m
DEN6:31 pmDenver Intl

Frontier flights from Denver to Seattle

Our best Frontier deals on Denver to Seattle flight tickets
Frontier
Sep 13
DEN2:30 amDenver Intl
3h 06m
SEA5:36 amSeattle/Tacoma Intl
Sep 28
SEA4:00 pmSeattle/Tacoma Intl
2h 50m
DEN6:50 pmDenver Intl
Frontier
Sep 13
DEN2:30 amDenver Intl
3h 06m
SEA5:36 amSeattle/Tacoma Intl
Sep 20
SEA5:21 amSeattle/Tacoma Intl
2h 47m
DEN8:08 amDenver Intl
Frontier
Sep 13
DEN2:30 amDenver Intl
3h 06m
SEA5:36 amSeattle/Tacoma Intl
Sep 20
SEA5:21 amSeattle/Tacoma Intl
2h 47m
DEN8:08 amDenver Intl

  • Are airlines flying from Denver Intl to Seattle/Tacoma Intl offering flexible cancellation due to COVID-19?

    Some of our partner airlines flying from Denver Intl to Seattle/Tacoma Intl are adopting new policies due to the global impact of COVID-19. Some of the airlines that may be waiving their cancellation fees are United Airlines, Alaska Airlines, and Delta. You can search for the full list of airlines like United Airlines that are offering this flexibility.

  • How far is Denver Intl to Seattle/Tacoma Intl by plane?

    A flight from Denver Intl to Seattle/Tacoma Intl will travel around 1019.6 mi. 3h 01m is a normal flight duration for this route.



Alternative routes for Denver to Seattle

Compare alternative flights to and from nearby airports and cities to discover the best prices and most convenient flight times
Colorado Springs to Seattle Flights
Fastest flight time4h 57m
Cheapest price$256
Denver to Spokane Flights
Fastest flight time2h 23m
Cheapest price$176
Grand Junction to Seattle Flights
Fastest flight time5h 25m
Cheapest price$361
Denver to Bellingham Flights
Fastest flight time8h 28m
Cheapest price$237
Montrose, Colorado to Seattle Flights
Fastest flight time6h 58m
Cheapest price$442
Denver to Walla Walla Flights
Fastest flight time6h 32m
Cheapest price$493

Similar Denver to Seattle flights

Flexible with your destination? Broaden your search and find flights similar to your Denver to Seattle route

Why use momondo?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Denver to Seattle for you.

Flights from Denver to Seattle with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

momondo provides multiple filters to help you find the best flight to Seattle from Denver. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

Yes momondo offers price alerts on flights to Seattle from Denver. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.


Here's why travelers choose to use momondo
Flexible Travel
momondo understands the need for flexibility and we have a filter specifically for flights with no change fees.
Expert Insights
Data driven insights designed to help you find a great flight deal. From the cheapest time to depart to how far in advance to book.
Price Alerts
Track the price of your preferred flight route and be notified when it changes.