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Denver International Airport to Seattle-Tacoma International Airport flight

Search for flights from Denver to Seattle and check out affordable one-way and round-trip options.

      • Cheapest nonstop
        DEN 07:00
        3h 4m
        Direct
        SEA 09:04
        Denver - Seattle | Thu, Aug 13 | Frontier Airlines
        SEA 19:06
        2h 52m
        Direct
        DEN 22:58
        Seattle - Denver | Wed, Aug 19 | Frontier Airlines
        € 51 € 188
        73% off
        73% off
        € 188 € 51
      • DEN 07:15
        3h 4m
        Direct
        SEA 09:19
        Denver - Seattle | Wed, Sep 2 | Frontier Airlines
        SEA 19:06
        2h 52m
        Direct
        DEN 22:58
        Seattle - Denver | Tue, Sep 8 | Frontier Airlines
        € 70 € 188
        63% off
        63% off
        € 188 € 70
      • DEN 07:15
        3h 4m
        Direct
        SEA 09:19
        Denver - Seattle | Fri, Aug 21 | Frontier Airlines
        SEA 14:37
        2h 56m
        Direct
        DEN 18:33
        Seattle - Denver | Tue, Aug 25 | Frontier Airlines
        € 90 € 188
        52% off
        52% off
        € 188 € 90
      • DEN 10:10
        3h 10m
        Direct
        SEA 12:20
        Denver - Seattle | Mon, Aug 24 | Frontier Airlines
        SEA 14:37
        2h 56m
        Direct
        DEN 18:33
        Seattle - Denver | Thu, Aug 27 | Frontier Airlines
        € 100
        47% off
        € 188 € 100
      • DEN 09:13
        3h 7m
        Direct
        SEA 11:20
        Denver - Seattle | Wed, Jul 29 | Frontier Airlines
        SEA 19:06
        2h 52m
        Direct
        DEN 22:58
        Seattle - Denver | Wed, Aug 5 | Frontier Airlines
        € 114
        39% off
        € 188 € 114
      • DEN 17:34
        3h
        Direct
        SEA 19:34
        Denver - Seattle | Wed, Sep 2 | Alaska Airlines
        SEA 19:54
        2h 53m
        Direct
        DEN 23:47
        Seattle - Denver | Tue, Sep 8 | Delta Air Lines
        € 131
        30% off
        € 188 € 131
      • DEN 07:15
        3h 4m
        Direct
        SEA 09:19
        Denver - Seattle | Tue, Aug 18 | Frontier Airlines
        SEA 14:37
        2h 56m
        Direct
        DEN 18:33
        Seattle - Denver | Thu, Aug 20 | Frontier Airlines
        € 132
        30% off
        € 188 € 132
      • DEN 06:20
        2h 59m
        Direct
        SEA 08:19
        Denver - Seattle | Wed, Sep 2 | Delta Air Lines
        SEA 08:55
        2h 50m
        Direct
        DEN 12:45
        Seattle - Denver | Tue, Sep 8 | Delta Air Lines
        € 133
        28% off
        € 188 € 133
      • DEN 21:03
        3h 1m
        Direct
        SEA 23:04
        Denver - Seattle | Wed, Sep 2 | United Airlines
        SEA 05:00
        2h 45m
        Direct
        DEN 08:45
        Seattle - Denver | Tue, Sep 8 | United Airlines
        € 135
        28% off
        € 188 € 135
      • DEN 07:45
        3h 3m
        Direct
        SEA 09:48
        Denver - Seattle | Fri, Aug 28 | Frontier Airlines
        SEA 19:41
        2h 55m
        Direct
        DEN 23:36
        Seattle - Denver | Mon, Aug 31 | Frontier Airlines
        € 135
        28% off
        € 188 € 135
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Thu, Jul 16 | Normal Airline
        SEA 15:00
        6h
        Direct
        DEN 16:00
        Seattle - Denver | Sat, Jul 18 | Normal Airline
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      • Cheapest nonstop
        DEN 07:15
        3h 4m
        Direct
        SEA 09:19
        Denver - Seattle | Tue, Aug 18 | Frontier Airlines
        € 17 € 80
        79% off
        79% off
        € 80 € 17
      • DEN 07:00
        3h 4m
        Direct
        SEA 09:04
        Denver - Seattle | Mon, Aug 10 | Frontier Airlines
        € 26 € 80
        68% off
        68% off
        € 80 € 26
      • DEN 07:00
        3h 4m
        Direct
        SEA 09:04
        Denver - Seattle | Sat, Aug 8 | Frontier Airlines
        € 26 € 80
        68% off
        68% off
        € 80 € 26
      • DEN 07:00
        3h 4m
        Direct
        SEA 09:04
        Denver - Seattle | Thu, Aug 13 | Frontier Airlines
        € 42
        48% off
        € 80 € 42
      • DEN 07:00
        3h 4m
        Direct
        SEA 09:04
        Denver - Seattle | Wed, Aug 12 | Frontier Airlines
        € 53
        34% off
        € 80 € 53
      • DEN 19:30
        3h
        Direct
        SEA 21:30
        Denver - Seattle | Thu, Aug 27 | Alaska Airlines
        € 53
        34% off
        € 80 € 53
      • DEN 18:43
        3h 2m
        Direct
        SEA 20:45
        Denver - Seattle | Thu, Aug 27 | Delta Air Lines
        € 55
        31% off
        € 80 € 55
      • DEN 11:05
        3h 17m
        Direct
        SEA 13:22
        Denver - Seattle | Wed, Sep 2 | Frontier Airlines
        € 57
        28% off
        € 80 € 57
      • DEN 22:29
        2h 58m
        Direct
        SEA 00:27
        Denver - Seattle | Wed, Sep 9 | Frontier Airlines
        € 57
        28% off
        € 80 € 57
      • DEN 07:13
        3h 4m
        Direct
        SEA 09:17
        Denver - Seattle | Tue, Aug 4 | Frontier Airlines
        € 57
        28% off
        € 80 € 57
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Thu, Jul 16 | Normal Airline
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Trip.com Price Insights: Flights from Denver International Airport to Seattle-Tacoma International Airport

Which month has the cheapest one-way flights from Denver International Airport to Seattle-Tacoma International Airport?

The data is based on Trip.com data from the past 12 months and shows the average one-way fares by month from Denver International Airport to Seattle-Tacoma International Airport.

Based on Trip.com 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 € 105. June sees the highest fares, around € 165.

€ 165
€ 135
€ 105
€ 75
    Cheapest
  • € 122
    Jul
  • € 112
    Aug
  • € 138
    Sep
  • € 119
    Oct
  • € 116
    Nov
  • € 130
    Dec
  • € 117
    Jan
  • € 124
    Feb
  • € 129
    Mar
  • € 105
    Apr
  • € 139
    May
  • € 165
    Jun

Which day of the week has the cheapest flights from Denver International Airport to Seattle-Tacoma International Airport?

The data is based on Trip.com data from the past 12 months and shows the average fares by each day of the week from Denver International Airport to Seattle-Tacoma International Airport.

Based on Trip.com data from the past 12 months, the cheapest day for flights from Denver International Airport to Seattle-Tacoma International Airport is Tuesday, with average prices lower than other days. Try to avoid departing on Sunday, as fares are typically the highest.

€ 149
€ 123
€ 96
€ 70
  • € 130
    Mon
  • € 96
    Tue
  • € 104
    Wed
  • € 130
    Thu
  • € 135
    Fri
  • € 136
    Sat
  • € 149
    Sun

Selected Airlines from Denver International Airport to Seattle-Tacoma International Airport

See which airlines fly from Denver to Seattle. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

Frontier Airlines
From € 17
Alaska Airlines
From € 53
Delta Air Lines
From € 55
United Airlines
From € 68
American Airlines
From € 106
Hahn Air
From € 122
Sun Country Airlines
From € 226
Qatar Airways
From € 334

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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. DL1731

    Denver International Airport

    06:45

    DEN

    3h 14m

    08:59

    SEA

    S M T W T F S
    Search

  2. AS615

    Denver International Airport

    19:13

    DEN

    3h

    21:13

    SEA

    S - - - - F -
    Search

  3. UA1482

    Denver International Airport

    06:00

    DEN

    3h

    08:00

    SEA

    S M T W T F S
    Search

  4. DL2543

    Denver International Airport

    18:39

    DEN

    3h 2m

    20:41

    SEA

    S M T W T F S
    Search

  5. AS493

    Denver International Airport

    21:08

    DEN

    3h 2m

    23:10

    SEA

    S - T W T - S
    Search

  6. AS643

    Denver International Airport

    06:02

    DEN

    3h 3m

    08:05

    SEA

    S M T W T F S
    Search

  7. F94545

    Denver International Airport

    13:55

    DEN

    3h 11m

    16:06

    SEA

    S M T W T F S
    Search

  8. F91175

    Denver International Airport

    11:05

    DEN

    3h 17m

    13:22

    SEA

    S M T W T F S
    Search
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Denver International Airport to Seattle-Tacoma International Airport Flights Info

Flight distance 1,646.85km
Cheapest one-way ticket price € 17
Cheapest return ticket price € 51

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

  • How long is a flight from Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA)?

    It takes around 3 hours 16 minutes to fly from Denver International Airport (den) to Seattle-Tacoma International Airport (sea).
  • There are around 18 daily flights from Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA).
  • Tickets cost around € 86 in September, making it the cheapest month to book. Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA) is a popular route, so don't forget to book your tickets in advance.
  • 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 € 202 in July, the most expensive month to book this route.
  • The earliest flight departs from Denver International Airport (DEN) at 06:25 and arrives in Seattle-Tacoma International Airport (SEA) at 08:39.
  • The latest flight departs from Denver International Airport (DEN) at 19:50 and arrives in Seattle-Tacoma International Airport (SEA) at 22:07.
    • 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.

Popular Destinations & Recommendations

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

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Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are shown before payment. Charges for checked baggage, meals, Wi-Fi, and other optional services may also appear in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and with many routes refreshed in real time. The more popular the route, the more accurate the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to 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 based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.