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Denver International Airport to Seattle-Tacoma International Airport flight

Explore the cheapest one-way and round-trip flights from Denver International Airport to Seattle-Tacoma International Airport over the next 90 days, with one-way fares from PLN 325 and round-trip from PLN 677. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Wed, Dec 9 | Frontier Airlines
      SEA 16:58
      2h 50m
      Direct
      DEN 20:48
      Seattle - Denver | Wed, Dec 16 | Frontier Airlines
      PLN 677 PLN 1,046
      35% off
      35% off
      PLN 1,046 PLN 677
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Sat, Dec 12 | Frontier Airlines
      SEA 16:58
      2h 50m
      Direct
      DEN 20:48
      Seattle - Denver | Wed, Dec 16 | Frontier Airlines
      PLN 691 PLN 1,046
      34% off
      34% off
      PLN 1,046 PLN 691
    • DEN 09:56
      3h 13m
      Direct
      SEA 12:09
      Denver - Seattle | Fri, Jan 8 | Frontier Airlines
      SEA 16:29
      2h 50m
      Direct
      DEN 20:19
      Seattle - Denver | Wed, Jan 13 | Frontier Airlines
      PLN 700 PLN 1,046
      33% off
      33% off
      PLN 1,046 PLN 700
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Mon, Dec 7 | Frontier Airlines
      SEA 16:58
      2h 50m
      Direct
      DEN 20:48
      Seattle - Denver | Sat, Dec 12 | Frontier Airlines
      PLN 727
      30% off
      PLN 1,046 PLN 727
    • DEN 10:08
      3h 14m
      Direct
      SEA 12:22
      Denver - Seattle | Mon, Jan 4 | Frontier Airlines
      SEA 14:29
      2h 48m
      Direct
      DEN 18:17
      Seattle - Denver | Sat, Jan 9 | Frontier Airlines
      PLN 727
      30% off
      PLN 1,046 PLN 727
    • DEN 10:08
      3h 14m
      Direct
      SEA 12:22
      Denver - Seattle | Fri, Dec 25 | Frontier Airlines
      SEA 13:37
      2h 49m
      Direct
      DEN 17:26
      Seattle - Denver | Wed, Dec 30 | Frontier Airlines
      PLN 727
      30% off
      PLN 1,046 PLN 727
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Fri, Dec 11 | Frontier Airlines
      SEA 16:58
      2h 50m
      Direct
      DEN 20:48
      Seattle - Denver | Wed, Dec 16 | Frontier Airlines
      PLN 728
      30% off
      PLN 1,046 PLN 728
    • DEN 13:14
      3h 8m
      Direct
      SEA 15:22
      Denver - Seattle | Mon, Nov 23 | Frontier Airlines
      SEA 16:37
      2h 48m
      Direct
      DEN 20:25
      Seattle - Denver | Wed, Nov 25 | Frontier Airlines
      PLN 741
      28% off
      PLN 1,046 PLN 741
    • DEN 13:32
      3h 8m
      Direct
      SEA 15:40
      Denver - Seattle | Fri, Dec 4 | Frontier Airlines
      SEA 16:58
      2h 50m
      Direct
      DEN 20:48
      Seattle - Denver | Wed, Dec 9 | Frontier Airlines
      PLN 752
      28% off
      PLN 1,046 PLN 752
    • DEN 13:00
      17h 25m
      1 stop
      SEA 14:00
      Denver - Seattle | Wed, Nov 11 | Normal Airline
      SEA 15:00
      6h
      Direct
      DEN 16:00
      Seattle - Denver | Fri, Nov 13 | Normal Airline
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    • Cheapest
      DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Wed, Dec 9 | Frontier Airlines
      PLN 325 PLN 562
      42% off
      42% off
      PLN 562 PLN 325
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Sat, Dec 5 | Frontier Airlines
      PLN 327 PLN 562
      42% off
      42% off
      PLN 562 PLN 327
    • DEN 22:55
      20h 59m
      1 stop
      SEA 18:54
      Denver - Seattle | Mon, Nov 16 | Frontier Airlines
      PLN 341 PLN 562
      39% off
      39% off
      PLN 562 PLN 341
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Sat, Dec 12 | Frontier Airlines
      PLN 345
      39% off
      PLN 562 PLN 345
    • DEN 13:32
      3h 8m
      Direct
      SEA 15:40
      Denver - Seattle | Fri, Dec 4 | Frontier Airlines
      PLN 347
      38% off
      PLN 562 PLN 347
    • DEN 10:08
      3h 14m
      Direct
      SEA 12:22
      Denver - Seattle | Fri, Dec 25 | Frontier Airlines
      PLN 364
      35% off
      PLN 562 PLN 364
    • DEN 13:03
      3h 11m
      Direct
      SEA 15:14
      Denver - Seattle | Fri, Jan 8 | Frontier Airlines
      PLN 375
      33% off
      PLN 562 PLN 375
    • DEN 13:14
      3h 8m
      Direct
      SEA 15:22
      Denver - Seattle | Mon, Nov 23 | Frontier Airlines
      PLN 377
      33% off
      PLN 562 PLN 377
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Mon, Dec 7 | Frontier Airlines
      PLN 384
      60% off
      PLN 957 PLN 384
    • DEN 13:00
      17h 25m
      1 stop
      SEA 14:00
      Denver - Seattle | Wed, Nov 11 | Normal Airline
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    • Cheapest nonstop
      DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Wed, Dec 9 | Frontier Airlines
      PLN 325 PLN 562
      42% off
      42% off
      PLN 562 PLN 325
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Sat, Dec 5 | Frontier Airlines
      PLN 327 PLN 562
      42% off
      42% off
      PLN 562 PLN 327
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Sat, Dec 12 | Frontier Airlines
      PLN 345 PLN 562
      39% off
      39% off
      PLN 562 PLN 345
    • DEN 13:32
      3h 8m
      Direct
      SEA 15:40
      Denver - Seattle | Fri, Dec 4 | Frontier Airlines
      PLN 347
      38% off
      PLN 562 PLN 347
    • DEN 10:08
      3h 14m
      Direct
      SEA 12:22
      Denver - Seattle | Fri, Dec 25 | Frontier Airlines
      PLN 364
      35% off
      PLN 562 PLN 364
    • DEN 13:03
      3h 11m
      Direct
      SEA 15:14
      Denver - Seattle | Fri, Jan 8 | Frontier Airlines
      PLN 375
      33% off
      PLN 562 PLN 375
    • DEN 13:14
      3h 8m
      Direct
      SEA 15:22
      Denver - Seattle | Mon, Nov 23 | Frontier Airlines
      PLN 377
      33% off
      PLN 562 PLN 377
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Mon, Dec 7 | Frontier Airlines
      PLN 384
      60% off
      PLN 957 PLN 384
    • DEN 15:05
      3h 2m
      Direct
      SEA 17:07
      Denver - Seattle | Wed, Jan 6 | Alaska Airlines
      PLN 399
      28% off
      PLN 562 PLN 399
    • DEN 13:00
      17h 25m
      1 stop
      SEA 14:00
      Denver - Seattle | Wed, Nov 11 | Normal Airline
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    • Cheapest nonstop
      DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Wed, Dec 9 | Frontier Airlines
      PLN 325 PLN 957
      66% off
      66% off
      PLN 957 PLN 325
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Sat, Dec 5 | Frontier Airlines
      PLN 327 PLN 957
      66% off
      66% off
      PLN 957 PLN 327
    • DEN 13:32
      3h 11m
      Direct
      SEA 15:43
      Denver - Seattle | Mon, Dec 7 | Frontier Airlines
      PLN 384 PLN 957
      60% off
      60% off
      PLN 957 PLN 384
    • DEN 13:14
      3h 8m
      Direct
      SEA 15:22
      Denver - Seattle | Thu, Nov 26 | Frontier Airlines
      PLN 413
      56% off
      PLN 957 PLN 413
    • DEN 13:32
      3h 8m
      Direct
      SEA 15:40
      Denver - Seattle | Wed, Dec 2 | Frontier Airlines
      PLN 441
      54% off
      PLN 957 PLN 441
    • DEN 13:14
      3h 8m
      Direct
      SEA 15:22
      Denver - Seattle | Tue, Nov 24 | Frontier Airlines
      PLN 472
      51% off
      PLN 957 PLN 472
    • DEN 06:05
      3h 18m
      Direct
      SEA 08:23
      Denver - Seattle | Sun, Dec 20 | Delta Air Lines
      PLN 537
      44% off
      PLN 957 PLN 537
    • DEN 13:55
      3h 11m
      Direct
      SEA 16:06
      Denver - Seattle | Mon, Dec 21 | Frontier Airlines
      PLN 539
      44% off
      PLN 957 PLN 539
    • DEN 21:55
      3h 4m
      Direct
      SEA 23:59
      Denver - Seattle | Wed, Nov 25 | Alaska Airlines
      PLN 603
      37% off
      PLN 957 PLN 603
    • DEN 13:00
      17h 25m
      1 stop
      SEA 14:00
      Denver - Seattle | Wed, Nov 11 | Normal Airline
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    • Cheapest nonstop
      DEN 13:04
      3h 8m
      Direct
      SEA 15:12
      Denver - Seattle | Mon, Nov 16 | Frontier Airlines
      PLN 419 PLN 1,573
      73% off
      73% off
      PLN 1,573 PLN 419
    • DEN 13:04
      3h 8m
      Direct
      SEA 15:12
      Denver - Seattle | Fri, Nov 13 | Frontier Airlines
      PLN 666 PLN 1,573
      57% off
      57% off
      PLN 1,573 PLN 666
    • DEN 07:03
      3h 4m
      Direct
      SEA 09:07
      Denver - Seattle | Sun, Nov 15 | Alaska Airlines
      PLN 698 PLN 1,573
      56% off
      56% off
      PLN 1,573 PLN 698
    • DEN 13:04
      3h 8m
      Direct
      SEA 15:12
      Denver - Seattle | Wed, Nov 11 | Frontier Airlines
      PLN 730
      54% off
      PLN 1,573 PLN 730
    • DEN 07:03
      3h 4m
      Direct
      SEA 09:07
      Denver - Seattle | Wed, Nov 11 | Alaska Airlines
      PLN 1,017
      35% off
      PLN 1,573 PLN 1,017
    • DEN 12:12
      3h 3m
      Direct
      SEA 14:15
      Denver - Seattle | Tue, Nov 10 | Alaska Airlines
      PLN 1,148
      27% off
      PLN 1,573 PLN 1,148
    • DEN 13:00
      17h 25m
      1 stop
      SEA 14:00
      Denver - Seattle | Wed, Nov 11 | Normal Airline
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    • DEN 15:05
      3h 2m
      Direct
      SEA 17:07
      Denver - Seattle | Wed, Jan 6 | Alaska Airlines
      PLN 399 PLN 562
      28% off
      28% off
      PLN 562 PLN 399
    • DEN 16:05
      3h 2m
      Direct
      SEA 18:07
      Denver - Seattle | Thu, Dec 17 | United Airlines
      PLN 809 PLN 1,981
      59% off
      59% off
      PLN 1,981 PLN 809
    • DEN 16:05
      3h 2m
      Direct
      SEA 18:07
      Denver - Seattle | Fri, Dec 18 | United Airlines
      PLN 935 PLN 1,981
      53% off
      53% off
      PLN 1,981 PLN 935
    • DEN 16:05
      3h 2m
      Direct
      SEA 18:07
      Denver - Seattle | Sun, Dec 20 | United Airlines
      PLN 948
      52% off
      PLN 1,981 PLN 948
    • DEN 15:25
      3h 2m
      Direct
      SEA 17:27
      Denver - Seattle | Sun, Nov 15 | Alaska Airlines
      PLN 972
      51% off
      PLN 1,981 PLN 972
    • DEN 16:05
      3h 2m
      Direct
      SEA 18:07
      Denver - Seattle | Tue, Dec 22 | United Airlines
      PLN 1,001
      49% off
      PLN 1,981 PLN 1,001
    • DEN 16:05
      3h 2m
      Direct
      SEA 18:07
      Denver - Seattle | Fri, Jan 1 | United Airlines
      PLN 1,113
      44% off
      PLN 1,981 PLN 1,113
    • DEN 16:02
      3h 2m
      Direct
      SEA 18:04
      Denver - Seattle | Sat, Jan 2 | United Airlines
      PLN 1,328
      33% off
      PLN 1,981 PLN 1,328
    • DEN 16:05
      3h 2m
      Direct
      SEA 18:07
      Denver - Seattle | Mon, Dec 28 | United Airlines
      PLN 1,336
      33% off
      PLN 1,981 PLN 1,336
    • DEN 13:00
      17h 25m
      1 stop
      SEA 14:00
      Denver - Seattle | Wed, Nov 11 | Normal Airline
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Displayed flight fares from Denver to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Trip.com Price Insights: Flights from Denver International Airport to Seattle-Tacoma International Airport

What is the cheapest month to fly from Denver International Airport to Seattle-Tacoma International Airport?

The data is based on the past 12 months and shows the average one-way ticket prices from Denver International Airport to Seattle-Tacoma International Airport for each month in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest one-way flights from Denver International Airport to Seattle-Tacoma International Airport are usually in April, with an average price of PLN 476. It is best to avoid October, when the average price can reach PLN 839.

PLN 839
PLN 658
PLN 476
PLN 295
    Cheapest
  • PLN 555
    Nov
  • PLN 588
    Dec
  • PLN 531
    Jan
  • PLN 565
    Feb
  • PLN 587
    Mar
  • PLN 476
    Apr
  • PLN 630
    May
  • PLN 751
    Jun
  • PLN 696
    Jul
  • PLN 616
    Aug
  • PLN 681
    Sep
  • PLN 839
    Oct

What is the cheapest day of the week to fly from Denver International Airport to Seattle-Tacoma International Airport?

The data is based on the past 12 months and shows the average ticket prices from Denver International Airport to Seattle-Tacoma International Airport for each day of the week in the Trip.com database.

Based on Trip.com's data from the past 12 months, the cheapest departure day from Denver International Airport to Seattle-Tacoma International Airport is Wednesday, with average prices usually lower than other days. Avoid departing on Thursday as prices are typically highest on that day.

PLN 694
PLN 589
PLN 483
PLN 378
    Cheapest
  • PLN 646
    Mon
  • PLN 523
    Tue
  • PLN 483
    Wed
  • PLN 694
    Thu
  • PLN 675
    Fri
  • PLN 657
    Sat
  • PLN 674
    Sun

Which airline offers the cheapest flights from Denver International Airport to Seattle-Tacoma International Airport?

The cheapest airline flying from Denver International Airport to Seattle-Tacoma International Airport is Frontier Airlines (from PLN 325) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From PLN 325
Alaska Airlines
From PLN 389
Delta Air Lines
From PLN 403
American Airlines
From PLN 446
United Airlines
From PLN 611
Sun Country Airlines
From PLN 724
Hahn Air
From PLN 960

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What is the flight schedule from Denver International Airport to Seattle-Tacoma International Airport?

Check the schedule for flights from Denver to Seattle and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AS493

    Denver International Airport

    15:25

    DEN

    3h 2m

    17:27

    SEA

    S M T W T F S
    Search

  2. F91175

    Denver International Airport

    13:07

    DEN

    3h 5m

    15:12

    SEA

    S - T - T F -
    Search

  3. AS317

    Denver International Airport

    07:03

    DEN

    3h 4m

    09:07

    SEA

    S M T W T F S
    Search

  4. DL1731

    Denver International Airport

    06:45

    DEN

    3h 14m

    08:59

    SEA

    S M T W T F S
    Search

  5. F92341

    Denver International Airport

    14:48

    DEN

    2h 43m

    Direct

    16:31

    LAX

    S M T W T F S
    Search

  6. F91177

    Los Angeles International Airport

    06:00

    LAX

    3h 3m

    Direct

    09:03

    SEA

    S M T W T F S

  7. F94967

    Denver International Airport

    13:19

    DEN

    2h 5m

    Direct

    14:24

    LAS

    S M T W T F S
    Search

  8. F92407

    Harry Reid International Airport

    07:35

    LAS

    3h 3m

    Direct

    10:38

    SEA

    S - - W T - S

  9. F94339

    Denver International Airport

    22:44

    DEN

    2h 31m

    Direct

    00:15

    LAX

    S M T W T F S
    Search

  10. F91177

    Los Angeles International Airport

    06:00

    LAX

    3h 3m

    Direct

    09:03

    SEA

    S M T W T F S
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About Denver International Airport and Seattle-Tacoma International Airport

Learn about Denver International Airport (DEN) and Seattle-Tacoma International Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 1,646.85km
Cheapest one-way ticket price PLN 325
Cheapest return ticket price PLN 677

FAQs for Denver International Airport to Seattle-Tacoma International Airport Flights

  • How long is the flight from Denver International Airport to Seattle-Tacoma International Airport?

    Denver International Airport to Seattle-Tacoma International Airport takes about 2 hours 34 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 11 daily flights from Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA).
  • The earliest flight from Denver International Airport to Seattle-Tacoma International Airport departs at 06:00, and the last departs at 21:07, with about 34 flights per day. Flight times may change, so please check the latest departure and arrival times before you travel.
  • The route from Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around PLN 1,073 in November, the most expensive month to book this route.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17km, by taxi about 30 minutes.
  • Frontier Airlines is a very popular airline operating an average of 4518 flights per month.
  • One-way flights from Denver International Airport to Seattle-Tacoma International Airport currently start from PLN 325, and round-trip fares start from PLN 677. The current lowest fare is a Frontier Airlines flight departing on Wed, Dec 9; prices may vary depending on availability.
  • Yes. United Airlines, Alaska Airlines, Delta Air Lines and Frontier Airlines operate direct flights from Denver International Airport to Seattle-Tacoma International Airport, with an average flight time of 2 hours 35 minutes, and around 111 weekly flights. Actual flight frequency may vary by season.
  • Based on Trip.com flight data for departures within the next 30 days with at most one stop, the average one-way price from Denver International Airport to Seattle-Tacoma International Airport is PLN 764. Prices may vary depending on the departure date, airline, and availability.
  • Condor, Frontier Airlines and Volaris are the most popular budget airlines flying from Denver International Airport to Seattle-Tacoma International Airport, with one-way fares starting from PLN 325. Compare final prices carefully, as baggage, seat selection and payment fees may apply.
  • Denver International Airport to Seattle-Tacoma International Airport operates around 109 weekly flights, mainly by United Airlines and Alaska Airlines. Actual frequency may vary during holidays and seasonal schedule adjustments.
  • Enter Denver International Airport and Seattle-Tacoma International Airport, select your departure date and number of passengers, then compare flights by price, flight duration, and baggage allowance. Once you've chosen a fare, review the change and refund rules, fill in passenger details, and pay to receive your booking confirmation.

Find Cheap Flights with Trip.com

Note: Prices shown on this page are the estimated lowest prices and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed on this page are all-inclusive (including taxes, fuel surcharges, civil aviation development fund, etc.), with all fees confirmed before payment. Fees for luggage, meals, Wi-Fi, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours—sometimes even in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the cancellation and change policies for each flight ticket during the booking process, including any fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply according to the airline's ticket policy.
Cancellation/change due to a flight schedule change:
If the flight schedule has changed and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please visit the customer support pages.