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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 2/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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.
9:57 am - 12:02 pmDEN-SEA
3h 05mnonstop
1:36 pm - 5:25 pmSEA-DEN
2h 49mnonstop
$81Frontier
Find Deal
Sun, Feb 23 - Wed, Feb 26
10:30 am - 12:36 pmDEN-SEA
3h 06mnonstop
2:02 pm - 5:50 pmSEA-DEN
2h 48mnonstop
$83Frontier
Find Deal
Wed, Mar 5 - Mon, Mar 10
9:04 pm - 11:09 pmDEN-SEA
3h 05mnonstop
5:00 am - 8:43 amSEA-DEN
2h 43mnonstop
$139United Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
6:00 am - 11:20 amDEN-SEA
6h 20m1 stop
5:00 am - 8:43 amSEA-DEN
2h 43mnonstop
$144United Airlines
Find Deal
Wed, Jan 8 - Sat, Jan 11
6:25 am - 8:39 amDEN-SEA
3h 14mnonstop
8:35 pm - 12:17 amSEA-DEN
2h 42mnonstop
$157Delta
Find Deal
Tue, Feb 18 - Sat, Feb 22
7:00 am - 9:16 amDEN-SEA
3h 16mnonstop
8:05 am - 1:54 pmSEA-DEN
4h 49m1 stop
$164Alaska Airlines
Find Deal
Sat, Feb 15 - Tue, Feb 18
7:00 am - 9:16 amDEN-SEA
3h 16mnonstop
7:45 pm - 11:29 pmSEA-DEN
2h 44mnonstop
$167Alaska Airlines
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Tue, Feb 18 - Sat, Feb 22
12:50 pm - 3:04 pmDEN-SEA
3h 14mnonstop
7:55 pm - 11:42 pmSEA-DEN
2h 47mnonstop
$178Delta
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Wed, Jan 15 - Sun, Jan 19
8:05 am - 10:10 amDEN-SEA
3h 05mnonstop
1:30 pm - 10:45 pmSEA-DEN
8h 15m1 stop
$217Southwest
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Tue, Feb 18 - Thu, Feb 20
9:55 pm - 11:55 pmDEN-SEA
3h 00mnonstop
7:15 am - 3:50 pmSEA-DEN
7h 35m2 stops
$222Southwest
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Tue, Feb 18 - Thu, Feb 20
10:30 am - 12:36 pmDEN-SEA
3h 06mnonstop
$28Frontier
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Wed, Feb 12
10:30 am - 12:36 pmDEN-SEA
3h 06mnonstop
$29Frontier
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Wed, Feb 12
8:05 am - 10:10 amDEN-SEA
3h 05mnonstop
$70Southwest
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Mon, Jan 20
6:00 am - 11:20 amDEN-SEA
6h 20m1 stop
$75United Airlines
Find Deal
Mon, Jan 20
7:04 pm - 9:05 pmDEN-SEA
3h 01mnonstop
$79United Airlines
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Sat, Feb 15
6:25 am - 8:39 amDEN-SEA
3h 14mnonstop
$90Delta
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Mon, Jan 20
7:00 am - 9:07 amDEN-SEA
3h 07mnonstop
$99Alaska Airlines
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Thu, Apr 17
7:57 pm - 9:59 pmDEN-SEA
3h 02mnonstop
$109Alaska Airlines
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Fri, Mar 21
2:40 pm - 9:30 pmDEN-SEA
7h 50m1 stop
$138Southwest
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Tue, Feb 18
2:35 pm - 8:24 amDEN-SEA
18h 49m1 stop
$157Delta
Find Deal
Mon, Jan 20
11:00 am - 1:10 pmDEN-SEA
3h 10mnonstop
9:36 pm - 1:21 amSEA-DEN
2h 45mnonstop
$196Frontier
Find Deal
Fri, Dec 20 - Wed, Dec 25
11:00 am - 1:10 pmDEN-SEA
3h 10mnonstop
9:36 pm - 1:21 amSEA-DEN
2h 45mnonstop
$231Frontier
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Mon, Dec 23 - Wed, Dec 25
9:50 pm - 11:59 pmDEN-SEA
3h 09mnonstop
6:59 pm - 10:36 pmSEA-DEN
2h 37mnonstop
$277Alaska Airlines
Find Deal
Thu, Dec 19 - Sat, Jan 11
6:00 am - 11:30 amDEN-SEA
6h 30m1 stop
5:00 am - 8:43 amSEA-DEN
2h 43mnonstop
$312United Airlines
Find Deal
Thu, Dec 19 - Sat, Jan 11
6:00 am - 11:30 amDEN-SEA
6h 30m1 stop
3:25 pm - 10:45 pmSEA-DEN
6h 20m1 stop
$322United Airlines
Find Deal
Thu, Dec 19 - Sat, Jan 11
5:30 am - 9:49 amDEN-SEA
5h 19m1 stop
5:05 pm - 10:58 pmSEA-DEN
4h 53m1 stop
$376Delta
Find Deal
Sat, Dec 21 - Fri, Dec 27
6:29 pm - 8:45 pmDEN-SEA
3h 16mnonstop
8:25 pm - 12:15 amSEA-DEN
2h 50mnonstop
$377Delta
Find Deal
Thu, Dec 19 - Sun, Jan 5
2:55 pm - 7:45 pmDEN-SEA
5h 50m1 stop
1:05 pm - 8:05 pmSEA-DEN
6h 00m1 stop
$476Southwest
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Thu, Dec 19 - Mon, Dec 23
6:00 pm - 12:30 amDEN-SEA
7h 30m2 stops
1:05 pm - 8:05 pmSEA-DEN
6h 00m1 stop
$481Southwest
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Thu, Dec 19 - Mon, Dec 23
10:37 am - 12:48 pmDEN-SEA
3h 11mnonstop
1:35 pm - 8:54 pmSEA-DEN
6h 19m1 stop
$506Alaska Airlines
Find Deal
Fri, Dec 20 - Mon, Dec 30
9:57 am - 12:02 pmDEN-SEA
3h 05mnonstop
1:36 pm - 5:25 pmSEA-DEN
2h 49mnonstop
$81Frontier
Find Deal
Sun, Feb 23 - Wed, Feb 26
10:30 am - 12:36 pmDEN-SEA
3h 06mnonstop
2:02 pm - 5:50 pmSEA-DEN
2h 48mnonstop
$83Frontier
Find Deal
Wed, Mar 5 - Mon, Mar 10
9:04 pm - 11:09 pmDEN-SEA
3h 05mnonstop
5:00 am - 8:43 amSEA-DEN
2h 43mnonstop
$139United Airlines
Find Deal
Thu, Jan 9 - Mon, Jan 13
8:40 pm - 10:40 pmDEN-SEA
3h 00mnonstop
7:30 am - 11:15 amSEA-DEN
2h 45mnonstop
$140Southwest
Find Deal
Wed, Jan 15 - Sun, Jan 19
6:25 am - 8:39 amDEN-SEA
3h 14mnonstop
8:35 pm - 12:17 amSEA-DEN
2h 42mnonstop
$157Delta
Find Deal
Tue, Feb 18 - Sat, Feb 22
9:45 pm - 11:45 pmDEN-SEA
3h 00mnonstop
5:05 am - 8:40 amSEA-DEN
2h 35mnonstop
$158Southwest
Find Deal
Sat, Feb 15 - Tue, Feb 18
7:00 am - 9:16 amDEN-SEA
3h 16mnonstop
7:45 pm - 11:29 pmSEA-DEN
2h 44mnonstop
$167Alaska Airlines
Find Deal
Tue, Feb 18 - Sat, Feb 22
7:00 am - 9:16 amDEN-SEA
3h 16mnonstop
7:45 pm - 11:29 pmSEA-DEN
2h 44mnonstop
$172Alaska Airlines
Find Deal
Fri, Feb 14 - Tue, Feb 18
12:50 pm - 3:04 pmDEN-SEA
3h 14mnonstop
7:55 pm - 11:42 pmSEA-DEN
2h 47mnonstop
$178Delta
Find Deal
Wed, Jan 15 - Sun, Jan 19
7:05 pm - 9:11 pmDEN-SEA
3h 06mnonstop
5:00 am - 8:43 amSEA-DEN
2h 43mnonstop
$247United Airlines
Find Deal
Thu, Jan 9 - Sun, Jan 12

Delta flights from Denver to Seattle

Our best Delta deals on Denver to Seattle flight tickets
Delta
Feb 18
DEN6:25 amDenver Intl
3h 14m
SEA8:39 amSeattle/Tacoma Intl
Feb 22
SEA8:35 pmSeattle/Tacoma Intl
2h 42m
DEN12:17 amDenver Intl
Delta
Jan 15
DEN12:50 pmDenver Intl
3h 14m
SEA3:04 pmSeattle/Tacoma Intl
Jan 19
SEA7:55 pmSeattle/Tacoma Intl
2h 47m
DEN11:42 pmDenver Intl
Delta
Jan 21
DEN7:50 pmDenver Intl
3h 17m
SEA10:07 pmSeattle/Tacoma Intl
Jan 23
SEA7:55 pmSeattle/Tacoma Intl
2h 47m
DEN11:42 pmDenver Intl

Frontier flights from Denver to Seattle

Our best Frontier deals on Denver to Seattle flight tickets
Frontier
Feb 23
DEN9:57 amDenver Intl
3h 05m
SEA12:02 pmSeattle/Tacoma Intl
Feb 26
SEA1:36 pmSeattle/Tacoma Intl
2h 49m
DEN5:25 pmDenver Intl
Frontier
Mar 5
DEN10:30 amDenver Intl
3h 06m
SEA12:36 pmSeattle/Tacoma Intl
Mar 10
SEA2:02 pmSeattle/Tacoma Intl
2h 48m
DEN5:50 pmDenver Intl
Frontier
Feb 23
DEN10:37 pmDenver Intl
16h 39m
1 stop
SEA2:16 pmSeattle/Tacoma Intl
Feb 26
SEA1:36 pmSeattle/Tacoma Intl
2h 49m
DEN5:25 pmDenver 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 to Seattle?

In general, April is the cheapest month to fly from Denver to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $136. If you don’t want to visit Seattle in April, then you should wait until February to fly from Denver, when ticket prices are also cheap, with an average price of $138.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Denver is on a Saturday. momondo users have found tickets for Saturday departures for as low as $172. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Denver because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $207.

What is the cheapest time of day to depart on your flight to Seattle?

Flying to Seattle from Denver in the evening is the least expensive time of day to depart. momondo users have found prices as low as $173 when looking at flights departing in the evening. Flights to Seattle are more costly at noon, with an average ticket price of $186. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Denver Intl to Seattle/Tacoma Intl flight route?

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Denver when booking 25 days ahead of your departure date. In general, you can expect to find flights to Seattle for around $174 when searching 25 days out. Keep in mind that you might be able to find cheaper flights to Seattle at any time. In fact, our users found flights for as low as $134 in the past 72 hours.

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

There are 4 cabin classes available to choose from on Denver Intl to Seattle/Tacoma Intl 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?

You could potentially save up to 89% on your flight if you consider stops on a Denver to Seattle flight.

How have Denver to Seattle flight prices changed over time?

As of December 2024, prices for Denver to Seattle flights are approximately 22% more expensive when compared to flights at the same time last year.

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

Mon, Tue, Thu, Fri, Sat and Sun

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 $81.
The fastest flight from Denver to Seattle takes 3h 00m
Direct flights go from Denver to Seattle on Monday, Tuesday, Thursday, Friday, Saturday and Sunday. Airlines offering direct flights are: United Airlines, Southwest and Delta.
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
3,479 reviews
Search Frontier flights
DeltaPriceFrom $88Free CancellationRating
8.0
8,604 reviews
Search Delta flights
Alaska AirlinesPriceFrom $121Free CancellationRating
8.0
9,552 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $132Free CancellationRating
8.1
4,848 reviews
Search Southwest flights
United AirlinesPriceFrom $136Free CancellationRating
7.4
9,059 reviews
Search United Airlines flights
  • Southwest Flights From Denver to Seattle

    Southwest operates around 9 flights from Denver to Seattle every week. The average price of these flights found in the last 72 hours has been $215, but momondo users have found Southwest deals from Denver to Seattle from as low as $132 round-trip. Southwest has been scored 8.1/10 in 4,848 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 $217 round-trip. Delta operates 5 flights out of Denver into Seattle in an average week, so prices vary by time and availability. 8,604 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.


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