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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 KRW 95,500 and round-trip from KRW 182,700. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        DEN 06:00
        3h 10m
        Direct
        SEA 08:10
        Denver - Seattle | Tue, Oct 20 | Delta Air Lines
        SEA 16:27
        2h 50m
        Direct
        DEN 20:17
        Seattle - Denver | Thu, Oct 22 | Frontier Airlines
        KRW 182,700 KRW 342,100
        47% off
        47% off
        KRW 342,100 KRW 182,700
      • DEN 13:07
        3h 5m
        Direct
        SEA 15:12
        Denver - Seattle | Tue, Oct 20 | Frontier Airlines
        SEA 16:27
        2h 50m
        Direct
        DEN 20:17
        Seattle - Denver | Thu, Oct 22 | Frontier Airlines
        KRW 229,900 KRW 342,100
        33% off
        33% off
        KRW 342,100 KRW 229,900
      • DEN 13:07
        3h 5m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Nov 5 | Frontier Airlines
        SEA 16:27
        2h 48m
        Direct
        DEN 20:15
        Seattle - Denver | Mon, Nov 9 | Frontier Airlines
        KRW 237,300 KRW 342,100
        31% off
        31% off
        KRW 342,100 KRW 237,300
      • DEN 13:07
        3h 1m
        Direct
        SEA 15:08
        Denver - Seattle | Sat, Oct 17 | Frontier Airlines
        SEA 16:27
        2h 54m
        Direct
        DEN 20:21
        Seattle - Denver | Mon, Oct 19 | Frontier Airlines
        KRW 249,700
        27% off
        KRW 342,100 KRW 249,700
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Sun, Nov 29 | Frontier Airlines
        SEA 16:37
        2h 48m
        Direct
        DEN 20:25
        Seattle - Denver | Thu, Dec 3 | Frontier Airlines
        KRW 238,300
        30% off
        KRW 342,100 KRW 238,300
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Nov 12 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Mon, Nov 16 | Frontier Airlines
        KRW 243,100
        28% off
        KRW 342,100 KRW 243,100
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Mon, Nov 9 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Mon, Nov 16 | Frontier Airlines
        KRW 243,100
        28% off
        KRW 342,100 KRW 243,100
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Sun, Nov 15 | Frontier Airlines
        SEA 16:27
        2h 48m
        Direct
        DEN 20:15
        Seattle - Denver | Thu, Nov 19 | Frontier Airlines
        KRW 244,100
        28% off
        KRW 342,100 KRW 244,100
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Sat, Nov 14 | Frontier Airlines
        SEA 16:27
        2h 48m
        Direct
        DEN 20:15
        Seattle - Denver | Thu, Nov 19 | Frontier Airlines
        KRW 244,500
        28% off
        KRW 342,100 KRW 244,500
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Mon, Nov 16 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Mon, Nov 23 | Frontier Airlines
        KRW 244,900
        28% off
        KRW 342,100 KRW 244,900
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Nov 19 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Mon, Nov 23 | Frontier Airlines
        KRW 244,900
        28% off
        KRW 342,100 KRW 244,900
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Mon, Nov 30 | Frontier Airlines
        SEA 16:37
        2h 48m
        Direct
        DEN 20:25
        Seattle - Denver | Thu, Dec 3 | Frontier Airlines
        KRW 249,500
        27% off
        KRW 342,100 KRW 249,500
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Thu, Oct 8 | Normal Airline
        SEA 15:00
        6h
        Direct
        DEN 16:00
        Seattle - Denver | Sat, Oct 10 | Normal Airline
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      • Cheapest nonstop
        DEN 06:00
        2h 59m
        Direct
        SEA 07:59
        Denver - Seattle | Fri, Oct 16 | Delta Air Lines
        KRW 104,500 KRW 180,200
        42% off
        42% off
        KRW 180,200 KRW 104,500
      • DEN 13:14
        3h 11m
        Direct
        SEA 15:25
        Denver - Seattle | Thu, Nov 26 | Delta Air Lines
        KRW 104,500 KRW 180,200
        42% off
        42% off
        KRW 180,200 KRW 104,500
      • DEN 07:45
        3h 6m
        Direct
        SEA 09:51
        Denver - Seattle | Sun, Nov 15 | Frontier Airlines
        KRW 109,900 KRW 180,200
        39% off
        39% off
        KRW 180,200 KRW 109,900
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Nov 26 | Frontier Airlines
        KRW 118,500
        34% off
        KRW 180,200 KRW 118,500
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Mon, Nov 9 | Frontier Airlines
        KRW 119,100
        34% off
        KRW 180,200 KRW 119,100
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Nov 12 | Frontier Airlines
        KRW 125,100
        31% off
        KRW 180,200 KRW 125,100
      • DEN 13:07
        3h 5m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Oct 29 | Frontier Airlines
        KRW 131,500
        27% off
        KRW 180,200 KRW 131,500
      • DEN 09:10
        10h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Sun, Nov 29 | Frontier Airlines
        KRW 95,500
        47% off
        KRW 180,200 KRW 95,500
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Sat, Nov 14 | Frontier Airlines
        KRW 113,100
        37% off
        KRW 180,200 KRW 113,100
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Sat, Nov 28 | Frontier Airlines
        KRW 115,500
        36% off
        KRW 180,200 KRW 115,500
      • DEN 12:23
        8h 46m
        1 stop
        SEA 20:09
        Denver - Seattle | Thu, Nov 26 | American Airlines
        KRW 118,500
        34% off
        KRW 180,200 KRW 118,500
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Mon, Nov 30 | Frontier Airlines
        KRW 123,700
        31% off
        KRW 180,200 KRW 123,700
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Thu, Oct 8 | Normal Airline
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Displayed flight fares from Denver International Airport to Seattle-Tacoma International Airport are based on average prices across airlines for the next 3 months according to the latest Trip.com data.

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 KRW 161,400. It is best to avoid June, when the average price can reach KRW 254,800.

KRW 254,800
KRW 208,100
KRW 161,400
KRW 114,700
    Cheapest
  • KRW 177,700
    Oct
  • KRW 178,000
    Nov
  • KRW 199,400
    Dec
  • KRW 180,100
    Jan
  • KRW 191,500
    Feb
  • KRW 199,200
    Mar
  • KRW 161,400
    Apr
  • KRW 213,800
    May
  • KRW 254,800
    Jun
  • KRW 236,200
    Jul
  • KRW 209,100
    Aug
  • KRW 231,000
    Sep

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 Sunday as prices are typically highest on that day.

KRW 230,700
KRW 193,650
KRW 156,600
KRW 119,550
    Cheapest
  • KRW 195,600
    Mon
  • KRW 180,800
    Tue
  • KRW 156,600
    Wed
  • KRW 211,600
    Thu
  • KRW 227,800
    Fri
  • KRW 215,200
    Sat
  • KRW 230,700
    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 KRW 95,500) among 6 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From KRW 95,500
Delta Air Lines
From KRW 104,500
American Airlines
From KRW 118,500
Alaska Airlines
From KRW 160,500
United Airlines
From KRW 162,700
Sun Country Airlines
From KRW 261,900

Find more flights and airlines

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. F91175

    Denver International Airport

    13:07

    DEN

    3h 5m

    15:12

    SEA

    S M T W T F S
    Search

  2. DL1731

    Denver International Airport

    06:45

    DEN

    3h 14m

    08:59

    SEA

    S M T W T F S
    Search

  3. F92341

    Denver International Airport

    12:54

    DEN

    2h 35m

    Direct

    14:29

    LAX

    S M T W T F S
    Search

  4. F91177

    Los Angeles International Airport

    17:38

    LAX

    3h

    Direct

    20:38

    SEA

    S M T W T F S

  5. DL1553

    Denver International Airport

    12:45

    DEN

    1h 33m

    Direct

    14:18

    SLC

    S M T W T F S
    Search

  6. DL871

    Salt Lake City International Airport

    17:10

    SLC

    2h 20m

    Direct

    18:30

    SEA

    S M T W T F S

  7. F93155

    Denver International Airport

    09:10

    DEN

    2h 37m

    Direct

    10:47

    LAX

    S M - W T F S
    Search

  8. F91177

    Los Angeles International Airport

    17:38

    LAX

    3h

    Direct

    20:38

    SEA

    S M T W T F S

  9. F94339

    Denver International Airport

    22:55

    DEN

    2h 28m

    Direct

    00:23

    LAX

    S M T W T F S
    Search

  10. F91177

    Los Angeles International Airport

    17:38

    LAX

    3h

    Direct

    20:38

    SEA

    S M T W T F S

  11. F94345

    Denver International Airport

    22:44

    DEN

    2h 26m

    Direct

    00:10

    LAX

    S - - - - - -
    Search

  12. F91177

    Los Angeles International Airport

    17:38

    LAX

    3h

    Direct

    20:38

    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 KRW 95,500
Cheapest return ticket price KRW 182,700

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 35 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 21:05, with about 40 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 KRW 340,700 in October, 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 KRW 95,500, and round-trip fares start from KRW 182,700. The current lowest fare is a Frontier Airlines flight departing on Sun, Nov 29; 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 40 minutes, and around 137 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 KRW 249,200. Prices may vary depending on the departure date, airline, and availability.
  • WestJet, Condor and Frontier Airlines are the most popular budget airlines flying from Denver International Airport to Seattle-Tacoma International Airport, with one-way fares starting from KRW 95,500. Compare final prices carefully, as baggage, seat selection and payment fees may apply.
  • Denver International Airport to Seattle-Tacoma International Airport operates around 139 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.

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