Trip.com
>
Flights
>
Flights to United States
>
Flights to Washington
>
Cheap Flights to Seattle
>
Denver to Seattle flight
>
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 US$ 30 and round-trip from US$ 137. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        DEN 06:00
        3h 10m
        Direct
        SEA 08:10
        Denver - Seattle | Thu, Oct 8 | Delta Air Lines
        SEA 16:27
        2h 50m
        Direct
        DEN 20:17
        Seattle - Denver | Sat, Oct 10 | Frontier Airlines
        US$ 137 US$ 283
        52% off
        52% off
        US$ 283 US$ 137
      • DEN 13:07
        3h 5m
        Direct
        SEA 15:12
        Denver - Seattle | Thu, Oct 8 | Frontier Airlines
        SEA 16:27
        2h 50m
        Direct
        DEN 20:17
        Seattle - Denver | Sat, Oct 10 | Frontier Airlines
        US$ 172 US$ 283
        39% off
        39% off
        US$ 283 US$ 172
      • DEN 13:07
        3h 1m
        Direct
        SEA 15:08
        Denver - Seattle | Mon, Oct 5 | Frontier Airlines
        SEA 16:27
        2h 54m
        Direct
        DEN 20:21
        Seattle - Denver | Wed, Oct 7 | Frontier Airlines
        US$ 187 US$ 283
        34% off
        34% off
        US$ 283 US$ 187
      • 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
        US$ 188
        34% off
        US$ 283 US$ 188
      • DEN 22:55
        20h 38m
        1 stop
        SEA 18:33
        Denver - Seattle | Wed, Nov 4 | Frontier Airlines
        SEA 19:48
        12h 57m
        1 stop
        DEN 09:45
        Seattle - Denver | Mon, Nov 9 | Frontier Airlines
        US$ 182
        36% off
        US$ 283 US$ 182
      • DEN 12:54
        6h 39m
        1 stop
        SEA 18:33
        Denver - Seattle | Thu, Nov 5 | Frontier Airlines
        SEA 19:48
        12h 57m
        1 stop
        DEN 09:45
        Seattle - Denver | Mon, Nov 9 | Frontier Airlines
        US$ 182
        36% off
        US$ 283 US$ 182
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Wed, Oct 28 | Frontier Airlines
        SEA 20:09
        13h 36m
        1 stop
        DEN 09:45
        Seattle - Denver | Sat, Oct 31 | Frontier Airlines
        US$ 188
        34% off
        US$ 283 US$ 188
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Tue, Oct 27 | Frontier Airlines
        SEA 20:09
        13h 36m
        1 stop
        DEN 09:45
        Seattle - Denver | Sat, Oct 31 | Frontier Airlines
        US$ 192
        32% off
        US$ 283 US$ 192
      • DEN 22:55
        20h 38m
        1 stop
        SEA 18:33
        Denver - Seattle | Tue, Nov 3 | Frontier Airlines
        SEA 19:48
        12h 57m
        1 stop
        DEN 09:45
        Seattle - Denver | Mon, Nov 9 | Frontier Airlines
        US$ 194
        31% off
        US$ 283 US$ 194
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Sat, Oct 31 | Frontier Airlines
        SEA 19:48
        12h 57m
        1 stop
        DEN 09:45
        Seattle - Denver | Sat, Nov 7 | Frontier Airlines
        US$ 195
        31% off
        US$ 283 US$ 195
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Wed, Nov 11 | Frontier Airlines
        SEA 19:48
        21h 15m
        1 stop
        DEN 18:03
        Seattle - Denver | Wed, Nov 18 | Frontier Airlines
        US$ 197
        30% off
        US$ 283 US$ 197
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Sat, Nov 14 | Frontier Airlines
        SEA 19:48
        21h 15m
        1 stop
        DEN 18:03
        Seattle - Denver | Wed, Nov 18 | Frontier Airlines
        US$ 198
        30% off
        US$ 283 US$ 198
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Mon, Oct 5 | Normal Airline
        SEA 15:00
        6h
        Direct
        DEN 16:00
        Seattle - Denver | Wed, Oct 7 | Normal Airline
        Find more flights
        Find more flights
      • Cheapest nonstop
        DEN 13:14
        3h 8m
        Direct
        SEA 15:22
        Denver - Seattle | Sun, Nov 22 | Frontier Airlines
        US$ 30 US$ 133
        77% off
        77% off
        US$ 133 US$ 30
      • DEN 06:00
        3h 12m
        Direct
        SEA 08:12
        Denver - Seattle | Sun, Nov 22 | Delta Air Lines
        US$ 77 US$ 133
        42% off
        42% off
        US$ 133 US$ 77
      • DEN 13:14
        3h 11m
        Direct
        SEA 15:25
        Denver - Seattle | Sat, Nov 14 | Delta Air Lines
        US$ 78 US$ 133
        41% off
        41% off
        US$ 133 US$ 78
      • DEN 07:45
        3h 6m
        Direct
        SEA 09:51
        Denver - Seattle | Tue, Nov 3 | Frontier Airlines
        US$ 82
        38% off
        US$ 133 US$ 82
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Sat, Nov 14 | Frontier Airlines
        US$ 89
        33% off
        US$ 133 US$ 89
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Wed, Oct 28 | Frontier Airlines
        US$ 89
        33% off
        US$ 133 US$ 89
      • DEN 13:14
        3h 8m
        Direct
        SEA 15:22
        Denver - Seattle | Fri, Nov 27 | Frontier Airlines
        US$ 93
        30% off
        US$ 133 US$ 93
      • DEN 09:10
        10h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Tue, Nov 17 | Frontier Airlines
        US$ 72
        46% off
        US$ 133 US$ 72
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Mon, Nov 2 | Frontier Airlines
        US$ 85
        36% off
        US$ 133 US$ 85
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Mon, Nov 16 | Frontier Airlines
        US$ 87
        35% off
        US$ 133 US$ 87
      • DEN 12:23
        8h 46m
        1 stop
        SEA 20:09
        Denver - Seattle | Sat, Nov 14 | American Airlines
        US$ 89
        33% off
        US$ 133 US$ 89
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Wed, Nov 18 | Frontier Airlines
        US$ 93
        30% off
        US$ 133 US$ 93
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Mon, Oct 5 | Normal Airline
        Find more flights
        Find more flights

Flight fares from Denver International Airport to Seattle-Tacoma International Airport are based on the average fares across airlines for the next three months, based on Trip.com’s latest 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, if you’re looking for a low-cost one-way ticket from Denver International Airport to Seattle-Tacoma International Airport, the best time to buy is in September, with an average price of US$ 70. You’ll want to avoid June, when the average price can reach as high as US$ 190.

US$ 190
US$ 130
US$ 70
US$ 10
  • US$ 70
    Sep
  • US$ 137
    Oct
  • US$ 133
    Nov
  • US$ 149
    Dec
  • US$ 135
    Jan
  • US$ 143
    Feb
  • US$ 149
    Mar
  • US$ 121
    Apr
  • US$ 160
    May
  • US$ 190
    Jun
  • US$ 177
    Jul
  • US$ 156
    Aug

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 day to depart from Denver International Airport to Seattle-Tacoma International Airport is Wednesday, with average fares typically lower than other days. You’ll want to avoid flying on Friday, as ticket prices are usually the highest that day.

US$ 173
US$ 145
US$ 117
US$ 89
    Cheapest
  • US$ 146
    Mon
  • US$ 132
    Tue
  • US$ 117
    Wed
  • US$ 158
    Thu
  • US$ 173
    Fri
  • US$ 159
    Sat
  • US$ 170
    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 US$ 30) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From US$ 30
Delta Air Lines
From US$ 77
American Airlines
From US$ 89
United Airlines
From US$ 117
Alaska Airlines
From US$ 120
Hahn Air
From US$ 170
Sun Country Airlines
From US$ 207

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

    - - - W T F -
    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
Find more flights and airlines

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 US$ 30
Cheapest return ticket price US$ 137

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 31 minutes on average. Actual flight time may vary depending on route, weather and air traffic.
  • There are around 12 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 US$ 231 in October, the most expensive month to book this route.
  • The earliest flight departs from Denver International Airport (DEN) at 06:15 and arrives in Seattle-Tacoma International Airport (SEA) at 08:24.
  • The latest flight departs from Denver International Airport (DEN) at 21:00 and arrives in Seattle-Tacoma International Airport (SEA) at 22:59.
    • 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 US$ 30, and round-trip fares start from US$ 137. The current lowest fare is a Frontier Airlines flight departing on Sun, Nov 22; 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 US$ 186. 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 US$ 30. 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.

Most popular destination

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

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, regulatory fees, etc) with all fees confirmed before payment. Fees for baggage, 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 were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled 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 check the customer support pages.