Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Denver to Seattle from $28

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Denver to Seattle departing on 12/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Deals available from 900+ travel sites.

"This year, momondo is the #1 place for airfares on the internet."
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.
Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.
Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.
Price Alerts
Price Alerts
Not ready to book? to track prices.

Find the cheapest flights from Denver to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from Denver to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from Denver to Seattle.

Cheap last minute flights

Planning a quick getaway from Denver to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Denver to Seattle

Find recent round-trip train or bus tickets from Denver to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
11:00 am - 1:10 pmDEN-SEA
3h 10mnonstop
9:36 pm - 1:21 amSEA-DEN
2h 45mnonstop
$67Frontier
Find Deal
Tue, Dec 17 - Tue, Dec 24
6:35 am - 8:37 amDEN-SEA
3h 02mnonstop
10:08 pm - 1:51 amSEA-DEN
2h 43mnonstop
$92Frontier
Find Deal
Wed, Mar 19 - Wed, Mar 26
1:30 pm - 3:41 pmDEN-SEA
3h 11mnonstop
3:17 pm - 7:01 pmSEA-DEN
2h 44mnonstop
$96Frontier
Find Deal
Thu, Jan 9 - Sun, Jan 12
12:10 pm - 2:22 pmDEN-SEA
3h 12mnonstop
7:55 pm - 11:44 pmSEA-DEN
2h 49mnonstop
$117Delta
Find Deal
Fri, Dec 13 - Mon, Dec 16
5:40 am - 9:45 amDEN-SEA
5h 05m1 stop
3:15 pm - 6:57 pmSEA-DEN
2h 42mnonstop
$127Delta
Find Deal
Tue, Jan 21 - Wed, Jan 29
10:30 am - 12:36 pmDEN-SEA
3h 06mnonstop
7:55 am - 11:42 amSEA-DEN
2h 47mnonstop
Fri, Feb 21 - Tue, Feb 25
4:45 pm - 6:52 pmDEN-SEA
3h 07mnonstop
6:59 pm - 10:36 pmSEA-DEN
2h 37mnonstop
$147Alaska Airlines
Find Deal
Wed, Jan 22 - Tue, Jan 28
7:00 am - 9:19 amDEN-SEA
3h 19mnonstop
6:59 pm - 10:36 pmSEA-DEN
2h 37mnonstop
$152Alaska Airlines
Find Deal
Sun, Jan 19 - Tue, Jan 28
9:17 am - 11:29 amDEN-SEA
3h 12mnonstop
4:30 pm - 8:09 pmSEA-DEN
2h 39mnonstop
Thu, Dec 12 - Sat, Dec 14
7:45 am - 3:21 pmDEN-SEA
8h 36m1 stop
4:30 pm - 12:35 amSEA-DEN
7h 05m1 stop
$252United Airlines
Find Deal
Mon, Dec 16 - Mon, Dec 23
11:00 am - 1:10 pmDEN-SEA
3h 10mnonstop
$28Frontier
Find Deal
Tue, Dec 17
10:30 am - 12:36 pmDEN-SEA
3h 06mnonstop
$43Frontier
Find Deal
Wed, Feb 19
7:50 am - 9:58 amDEN-SEA
3h 08mnonstop
$59United Airlines
Find Deal
Wed, Dec 11
6:00 am - 11:20 amDEN-SEA
6h 20m1 stop
$64United Airlines
Find Deal
Tue, Jan 7
6:29 pm - 12:26 amDEN-SEA
6h 57m1 stop
$68Delta
Find Deal
Tue, Dec 24
6:25 am - 8:39 amDEN-SEA
3h 14mnonstop
$79Delta
Find Deal
Wed, Jan 8
9:50 pm - 11:59 pmDEN-SEA
3h 09mnonstop
$94Alaska Airlines
Find Deal
Sun, Dec 22
12:45 pm - 6:01 pmDEN-SEA
6h 16m1 stop
$98Alaska Airlines
Find Deal
Tue, Dec 17
9:40 am - 4:35 pmDEN-SEA
7h 55m2 stops
$143Southwest
Find Deal
Fri, Jan 31
3:35 pm - 11:00 pmDEN-SEA
8h 25m2 stops
$153Southwest
Find Deal
Wed, Dec 11
6:54 pm - 9:05 pmDEN-SEA
3h 11mnonstop
9:40 pm - 1:24 amSEA-DEN
2h 44mnonstop
$183Frontier
Find Deal
Sat, Nov 23 - Wed, Nov 27
9:00 am - 11:11 amDEN-SEA
3h 11mnonstop
9:09 am - 12:54 pmSEA-DEN
2h 45mnonstop
$196Frontier
Find Deal
Mon, Nov 25 - Tue, Nov 26
5:29 am - 9:39 amDEN-SEA
5h 10m1 stop
7:50 pm - 11:31 pmSEA-DEN
2h 41mnonstop
$357Delta
Find Deal
Sat, Nov 23 - Mon, Dec 2
9:40 pm - 11:44 pmDEN-SEA
3h 04mnonstop
9:10 am - 12:53 pmSEA-DEN
2h 43mnonstop
$362Alaska Airlines
Find Deal
Sat, Nov 23 - Thu, Nov 28
6:00 am - 8:06 amDEN-SEA
3h 06mnonstop
11:04 am - 2:45 pmSEA-DEN
2h 41mnonstop
$371Alaska Airlines
Find Deal
Thu, Nov 21 - Thu, Nov 21
7:59 pm - 10:20 pmDEN-SEA
3h 21mnonstop
7:15 am - 1:30 pmSEA-DEN
5h 15m1 stop
$372Delta
Find Deal
Sat, Nov 23 - Tue, Nov 26
6:00 pm - 12:30 amDEN-SEA
7h 30m2 stops
6:35 am - 12:50 pmSEA-DEN
5h 15m1 stop
$382Southwest
Find Deal
Sun, Nov 24 - Tue, Nov 26
5:05 pm - 10:50 pmDEN-SEA
6h 45m1 stop
5:40 am - 1:55 pmSEA-DEN
7h 15m2 stops
$386Southwest
Find Deal
Sat, Nov 23 - Tue, Nov 26
3:43 pm - 11:44 pmDEN-SEA
9h 01m1 stop
1:55 pm - 11:06 pmSEA-DEN
8h 11m1 stop
$456United Airlines
Find Deal
Sat, Nov 23 - Wed, Nov 27
9:05 pm - 11:11 pmDEN-SEA
3h 06mnonstop
10:12 pm - 1:56 amSEA-DEN
2h 44mnonstop
$457United Airlines
Find Deal
Fri, Nov 22 - Sun, Dec 1
11:00 am - 1:10 pmDEN-SEA
3h 10mnonstop
9:36 pm - 1:21 amSEA-DEN
2h 45mnonstop
$67Frontier
Find Deal
Tue, Dec 17 - Tue, Dec 24
6:35 am - 8:37 amDEN-SEA
3h 02mnonstop
10:08 pm - 1:51 amSEA-DEN
2h 43mnonstop
$92Frontier
Find Deal
Wed, Mar 19 - Wed, Mar 26
7:45 pm - 10:10 pmDEN-SEA
3h 25mnonstop
7:25 am - 11:15 amSEA-DEN
2h 50mnonstop
$117Delta
Find Deal
Fri, Dec 13 - Thu, Dec 19
4:45 pm - 6:52 pmDEN-SEA
3h 07mnonstop
6:59 pm - 10:36 pmSEA-DEN
2h 37mnonstop
$147Alaska Airlines
Find Deal
Wed, Jan 22 - Tue, Jan 28
7:00 am - 9:19 amDEN-SEA
3h 19mnonstop
6:59 pm - 10:36 pmSEA-DEN
2h 37mnonstop
$152Alaska Airlines
Find Deal
Sun, Jan 19 - Wed, Jan 29
12:50 pm - 3:04 pmDEN-SEA
3h 14mnonstop
3:15 pm - 6:57 pmSEA-DEN
2h 42mnonstop
$157Delta
Find Deal
Wed, Jan 8 - Tue, Jan 14
3:50 pm - 5:50 pmDEN-SEA
3h 00mnonstop
10:00 am - 1:45 pmSEA-DEN
2h 45mnonstop
$158Southwest
Find Deal
Tue, Jan 28 - Wed, Jan 29
10:50 pm - 12:50 amDEN-SEA
3h 00mnonstop
5:00 am - 8:35 amSEA-DEN
2h 35mnonstop
$168Southwest
Find Deal
Sun, Dec 22 - Thu, Jan 2
4:03 pm - 6:05 pmDEN-SEA
3h 02mnonstop
5:00 am - 8:42 amSEA-DEN
2h 42mnonstop
$337United Airlines
Find Deal
Thu, Mar 13 - Mon, Mar 17
11:59 pm - 2:05 amDEN-SEA
3h 06mnonstop
5:00 am - 8:47 amSEA-DEN
2h 47mnonstop
$362United Airlines
Find Deal
Sat, Nov 30 - Tue, Dec 3

Frontier flights from Denver to Seattle

Our best Frontier deals on Denver to Seattle flight tickets
Frontier
Dec 17
DEN11:00 amDenver Intl
3h 10m
SEA1:10 pmSeattle/Tacoma Intl
Dec 24
SEA9:36 pmSeattle/Tacoma Intl
2h 45m
DEN1:21 amDenver Intl
Frontier
Mar 19
DEN6:35 amDenver Intl
3h 02m
SEA8:37 amSeattle/Tacoma Intl
Mar 26
SEA10:08 pmSeattle/Tacoma Intl
2h 43m
DEN1:51 amDenver Intl
Frontier
Jan 9
DEN1:30 pmDenver Intl
3h 11m
SEA3:41 pmSeattle/Tacoma Intl
Jan 12
SEA3:17 pmSeattle/Tacoma Intl
2h 44m
DEN7:01 pmDenver Intl

Delta flights from Denver to Seattle

Our best Delta deals on Denver to Seattle flight tickets
Delta
Dec 13
DEN12:10 pmDenver Intl
3h 12m
SEA2:22 pmSeattle/Tacoma Intl
Dec 16
SEA7:55 pmSeattle/Tacoma Intl
2h 49m
DEN11:44 pmDenver Intl
Delta
Jan 21
DEN5:40 amDenver Intl
5h 05m
1 stop
SEA9:45 amSeattle/Tacoma Intl
Jan 29
SEA3:15 pmSeattle/Tacoma Intl
2h 42m
DEN6:57 pmDenver Intl
Delta
Dec 13
DEN6:29 pmDenver Intl
6h 54m
1 stop
SEA12:23 amSeattle/Tacoma Intl
Dec 15
SEA5:30 amSeattle/Tacoma Intl
5h 05m
1 stop
DEN11:35 amDenver Intl

See travel insights to Seattle from

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?

April. The cheapest time of year to fly to Seattle from Denver is April. Most expensive is July

What is the cheapest day to depart Denver for Seattle?

Saturday. The cheapest day of the week is typically Saturday. 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 2% more expensive in the morning than in the evening

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?

27 days before. The cheapest time to buy a flight from Denver to Seattle is approximately 27 days to departure

What cabin class options are available on Denver to Seattle flights?

There are 3 cabin classes available to choose from on Denver to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Denver to Seattle flights?

No. A direct flight is the cheapest option for a flight between Denver to Seattle.

How have Denver to Seattle flight prices changed over time?

As of November 2024, prices for Denver to Seattle flights are approximately 13% more expensive when compared to flights at the same time last year.

What is the typical price of a round-trip flight between Denver and Seattle?


When to book flights from Denver to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from Denver to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Denver to Seattle (DEN to SEA) flight deals and tips

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

Best Price Found

$28

Fastest flight time

3h 00m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Denver in the past 72 hours is $28. The best round-trip flight deal from Denver to Seattle found on momondo in the last 72 hours is $67.
The fastest flight from Denver to Seattle takes 3h 00m
Direct flights go from Denver to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • 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 00m is a normal flight duration for this route.

  • When did momondo last update prices for flights from Denver Intl Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from Denver Intl Airport to Seattle/Tacoma Intl Airport were last updated today.

  • How many operators does momondo search for flights from Denver Intl Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from Denver Intl Airport to Seattle/Tacoma Intl Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Denver Intl Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The required travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Seattle/Tacoma Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Denver to Seattle?

  • What is the most popular airline from Denver to Seattle?


Best airlines flying from Denver to Seattle

Compare and see reviews for airlines that fly from Denver to Seattle with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $55Free CancellationRating
6.1
3,539 reviews
Search Frontier flights
DeltaPriceFrom $88Free CancellationRating
8.0
8,756 reviews
Search Delta flights
Alaska AirlinesPriceFrom $119Free CancellationRating
8.0
9,461 reviews
Search Alaska Airlines flights
United AirlinesPriceFrom $136Free CancellationRating
7.4
9,171 reviews
Search United Airlines flights
SouthwestPriceFrom $140Free CancellationRating
8.1
5,014 reviews
Search Southwest flights
  • Southwest Flights From Denver to Seattle

    Southwest operates around 18 flights from Denver to Seattle every week. The average price of these flights found in the last 72 hours has been $217, but momondo users have found Southwest deals from Denver to Seattle from as low as $140 round-trip. Southwest has been scored 8.1/10 in 5,014 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 $88, round-trip. It should be noted that an average Delta flight deal for this route in this time was higher, at $216 round-trip. Delta operates 17 flights out of Denver into Seattle in an average week, so prices vary by time and availability. 8,756 Delta reviews by users on momondo have scored the airline at 8.0/10.


Why use momondo?

Why should I use momondo to find a flight deal from Denver to Seattle?

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.

Can I find flights from Denver to Seattle with flexible booking policies on momondo?

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.

How can momondo help me find flights from Denver to Seattle?

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.

I’m not ready to book a flight from Denver to Seattle right now. Can momondo alert me if prices change?

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.


An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
From?
To?
Mon 11/25
Mon 12/2
Email me momondo's favorite deals

Find better results for your trip to the United States