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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 7:15 AM
        3h 4m
        Nonstop
        SEA 9:19 AM
        Denver - Seattle | Wed, Sep 2 | Frontier Airlines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Tue, Sep 8 | Frontier Airlines
        €83 €154
        46% off
        46% off
        €154 €83
      • DEN 5:34 PM
        3h
        Nonstop
        SEA 7:34 PM
        Denver - Seattle | Wed, Sep 2 | Alaska Airlines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Tue, Sep 8 | Frontier Airlines
        €105 €154
        32% off
        32% off
        €154 €105
      • DEN 6:43 PM
        3h 2m
        Nonstop
        SEA 8:45 PM
        Denver - Seattle | Wed, Sep 2 | Delta Air Lines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Tue, Sep 8 | Frontier Airlines
        €108 €154
        30% off
        30% off
        €154 €108
      • DEN 9:13 AM
        3h 7m
        Nonstop
        SEA 11:20 AM
        Denver - Seattle | Wed, Jul 29 | Frontier Airlines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Wed, Aug 5 | Frontier Airlines
        €113
        27% off
        €154 €113
      • DEN 7:15 AM
        3h 4m
        Nonstop
        SEA 9:19 AM
        Denver - Seattle | Tue, Aug 18 | Frontier Airlines
        SEA 2:37 PM
        2h 56m
        Nonstop
        DEN 6:33 PM
        Seattle - Denver | Thu, Aug 20 | Frontier Airlines
        €131
        15% off
        €154 €131
      • DEN 9:03 PM
        3h 1m
        Nonstop
        SEA 11:04 PM
        Denver - Seattle | Wed, Sep 2 | United Airlines
        SEA 5:00 AM
        2h 45m
        Nonstop
        DEN 8:45 AM
        Seattle - Denver | Tue, Sep 8 | United Airlines
        €134
        13% off
        €154 €134
      • DEN 7:45 AM
        3h 3m
        Nonstop
        SEA 9:48 AM
        Denver - Seattle | Fri, Aug 28 | Frontier Airlines
        SEA 7:41 PM
        2h 55m
        Nonstop
        DEN 11:36 PM
        Seattle - Denver | Mon, Aug 31 | Frontier Airlines
        €135
        12% off
        €154 €135
      • DEN 9:13 AM
        3h 7m
        Nonstop
        SEA 11:20 AM
        Denver - Seattle | Tue, Jul 28 | Frontier Airlines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Mon, Aug 3 | Frontier Airlines
        €139
        10% off
        €154 €139
      • DEN 7:13 AM
        3h 4m
        Nonstop
        SEA 9:17 AM
        Denver - Seattle | Tue, Jul 21 | Frontier Airlines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Thu, Jul 23 | Frontier Airlines
        €140
        9% off
        €154 €140
      • DEN 9:13 AM
        3h 7m
        Nonstop
        SEA 11:20 AM
        Denver - Seattle | Thu, Jul 30 | Frontier Airlines
        SEA 7:06 PM
        2h 52m
        Nonstop
        DEN 10:58 PM
        Seattle - Denver | Wed, Aug 5 | Frontier Airlines
        €140
        9% off
        €154 €140
      • DEN 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Denver - Seattle | Sat, Jul 11 | Normal Airline
        SEA 3:00 PM
        6h
        Nonstop
        DEN 4:00 PM
        Seattle - Denver | Mon, Jul 13 | Normal Airline
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      • Cheapest nonstop
        DEN 7:15 AM
        3h 4m
        Nonstop
        SEA 9:19 AM
        Denver - Seattle | Tue, Aug 18 | Frontier Airlines
        €17 €63
        73% off
        73% off
        €63 €17
      • DEN 7:00 AM
        3h 4m
        Nonstop
        SEA 9:04 AM
        Denver - Seattle | Wed, Aug 12 | Frontier Airlines
        €52 €63
        17% off
        17% off
        €63 €52
      • DEN 6:02 AM
        3h 3m
        Nonstop
        SEA 8:05 AM
        Denver - Seattle | Tue, Aug 18 | Alaska Airlines
        €53 €63
        16% off
        16% off
        €63 €53
      • DEN 7:30 PM
        3h
        Nonstop
        SEA 9:30 PM
        Denver - Seattle | Thu, Aug 27 | Alaska Airlines
        €53
        16% off
        €63 €53
      • DEN 6:43 PM
        3h 2m
        Nonstop
        SEA 8:45 PM
        Denver - Seattle | Thu, Aug 27 | Delta Air Lines
        €55
        13% off
        €63 €55
      • DEN 6:43 PM
        3h 2m
        Nonstop
        SEA 8:45 PM
        Denver - Seattle | Tue, Aug 18 | Delta Air Lines
        €55
        13% off
        €63 €55
      • DEN 11:05 AM
        3h 17m
        Nonstop
        SEA 1:22 PM
        Denver - Seattle | Wed, Sep 2 | Frontier Airlines
        €57
        10% off
        €63 €57
      • DEN 7:13 AM
        3h 4m
        Nonstop
        SEA 9:17 AM
        Denver - Seattle | Tue, Jul 28 | Frontier Airlines
        €57
        10% off
        €63 €57
      • DEN 7:00 AM
        3h 4m
        Nonstop
        SEA 9:04 AM
        Denver - Seattle | Mon, Aug 10 | Frontier Airlines
        €57
        10% off
        €63 €57
      • DEN 9:13 AM
        3h 7m
        Nonstop
        SEA 11:20 AM
        Denver - Seattle | Tue, Aug 4 | Frontier Airlines
        €57
        10% off
        €63 €57
      • DEN 1:00 PM
        17h 25m
        1 stop
        SEA 2:00 PM
        Denver - Seattle | Sat, Jul 11 | Normal Airline
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Flight fares from Denver International Airport to Seattle-Tacoma International Airport are based on average airline prices for the next 3 months, according to Trip.com’s latest data.

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

Which month has the lowest one-way flight price from Denver International Airport to Seattle-Tacoma International Airport?

The data is based on the average one-way flight prices on Trip.com for flights from Denver International Airport to Seattle-Tacoma International Airport across different months over the past 12 months.

Based on Trip.com data from the past 12 months, if you’re looking for low one-way flight fares from Denver International Airport to Seattle-Tacoma International Airport, the best time to book is in April, with an average price of €104. Try to avoid June, when prices are highest, averaging around €164.

€164
€134
€104
€74
    Cheapest
  • €135
    Jul
  • €111
    Aug
  • €137
    Sep
  • €118
    Oct
  • €115
    Nov
  • €129
    Dec
  • €116
    Jan
  • €124
    Feb
  • €129
    Mar
  • €104
    Apr
  • €138
    May
  • €164
    Jun

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 average flight prices on Trip.com from Denver International Airport to Seattle-Tacoma International Airport across different days of the week over the past 12 months.

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

€148
€122
€95
€69
  • €129
    Mon
  • €95
    Tue
  • €103
    Wed
  • €129
    Thu
  • €134
    Fri
  • €135
    Sat
  • €148
    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
American Airlines
From €69
United Airlines
From €89
Hahn Air
From €121
Sun Country Airlines
From €200
Qatar Airways
From €332

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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. AS317

    Denver International Airport

    8:40 AM

    DEN

    3h 2m

    10:42 AM

    SEA

    S M T W T F S
    Search

  2. DL2543

    Denver International Airport

    6:39 PM

    DEN

    3h 2m

    8:41 PM

    SEA

    S M T W T F S
    Search

  3. AS643

    Denver International Airport

    6:02 AM

    DEN

    3h 3m

    8:05 AM

    SEA

    S M T W T F S
    Search

  4. F94545

    Denver International Airport

    1:55 PM

    DEN

    3h 11m

    4:06 PM

    SEA

    S M T W T F S
    Search

  5. F91175

    Denver International Airport

    11:05 AM

    DEN

    3h 17m

    1:22 PM

    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 1,646.85 km
Cheapest one-way ticket price €17
Cheapest return ticket price €83

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

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

    It takes around 3 hours 14 minutes to fly from Denver International Airport (den) to Seattle-Tacoma International Airport (sea).
  • There are around 17 daily flights from Denver International Airport (DEN) to Seattle-Tacoma International Airport (SEA).
  • Tickets cost around €115 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 €186 in July, the most expensive month to book this route.
    • The distance from Seattle-Tacoma International Airport to downtown is about 17 km. It takes about 30 minutes by taxi.
  • Frontier Airlines is a very popular airline operating an average of 4518 flights per month.

Popular Destinations

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

Book with no extra fees

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

Real-time pricing updates

Prices, availability, and travel information on this page have been updated within the last 24 hours, and for many routes the data may refresh in real time. The more popular the route, the more accurate and up-to-date 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.