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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 S$ 38 and round-trip from S$ 175. Based on Trip.com's latest 7-day flight data.

      • Cheapest nonstop
        DEN 06:00
        3h 10m
        Direct
        SEA 08:10
        Denver - Seattle | Sat, Oct 10 | Delta Air Lines
        SEA 16:27
        2h 50m
        Direct
        DEN 20:17
        Seattle - Denver | Mon, Oct 12 | Frontier Airlines
        S$ 175 S$ 366
        52% off
        52% off
        S$ 366 S$ 175
      • DEN 13:07
        3h 5m
        Direct
        SEA 15:12
        Denver - Seattle | Sat, Oct 10 | Frontier Airlines
        SEA 16:27
        2h 50m
        Direct
        DEN 20:17
        Seattle - Denver | Mon, Oct 12 | Frontier Airlines
        S$ 220 S$ 366
        40% off
        40% off
        S$ 366 S$ 220
      • DEN 13:07
        3h 1m
        Direct
        SEA 15:08
        Denver - Seattle | Wed, Oct 7 | Frontier Airlines
        SEA 16:27
        2h 54m
        Direct
        DEN 20:21
        Seattle - Denver | Fri, Oct 9 | Frontier Airlines
        S$ 239 S$ 366
        35% off
        35% off
        S$ 366 S$ 239
      • DEN 13:14
        3h 8m
        Direct
        SEA 15:22
        Denver - Seattle | Wed, Nov 25 | Frontier Airlines
        SEA 16:37
        2h 48m
        Direct
        DEN 20:25
        Seattle - Denver | Fri, Nov 27 | Frontier Airlines
        S$ 240
        34% off
        S$ 366 S$ 240
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Fri, Oct 30 | Frontier Airlines
        SEA 20:09
        20h 54m
        1 stop
        DEN 18:03
        Seattle - Denver | Fri, Nov 6 | Frontier Airlines
        S$ 232
        37% off
        S$ 366 S$ 232
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Thu, Oct 29 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Thu, Nov 5 | Frontier Airlines
        S$ 239
        35% off
        S$ 366 S$ 239
      • DEN 13:10
        6h 35m
        1 stop
        SEA 18:45
        Denver - Seattle | Thu, Oct 22 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Thu, Oct 29 | Frontier Airlines
        S$ 253
        31% off
        S$ 366 S$ 253
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Fri, Nov 6 | Frontier Airlines
        SEA 20:09
        20h 26m
        1 stop
        DEN 17:35
        Seattle - Denver | Thu, Nov 12 | Frontier Airlines
        S$ 253
        31% off
        S$ 366 S$ 253
      • 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 | Thu, Nov 19 | Frontier Airlines
        S$ 254
        31% off
        S$ 366 S$ 254
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Fri, Nov 13 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Wed, Nov 18 | Frontier Airlines
        S$ 255
        30% off
        S$ 366 S$ 255
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Mon, Nov 2 | Frontier Airlines
        SEA 20:09
        20h 54m
        1 stop
        DEN 18:03
        Seattle - Denver | Fri, Nov 6 | Frontier Airlines
        S$ 256
        30% off
        S$ 366 S$ 256
      • DEN 13:07
        3h 5m
        Direct
        SEA 15:12
        Denver - Seattle | Fri, Oct 23 | Frontier Airlines
        SEA 20:09
        18h 2m
        1 stop
        DEN 15:11
        Seattle - Denver | Fri, Oct 30 | Frontier Airlines
        S$ 256
        30% off
        S$ 366 S$ 256
      • 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
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      • Cheapest nonstop
        DEN 13:14
        3h 8m
        Direct
        SEA 15:22
        Denver - Seattle | Sun, Nov 22 | Frontier Airlines
        S$ 38 S$ 170
        78% off
        78% off
        S$ 170 S$ 38
      • DEN 06:00
        3h 12m
        Direct
        SEA 08:12
        Denver - Seattle | Sun, Nov 22 | Delta Air Lines
        S$ 99 S$ 170
        42% off
        42% off
        S$ 170 S$ 99
      • DEN 13:14
        3h 11m
        Direct
        SEA 15:25
        Denver - Seattle | Sat, Nov 14 | Delta Air Lines
        S$ 100 S$ 170
        41% off
        41% off
        S$ 170 S$ 100
      • DEN 07:45
        3h 6m
        Direct
        SEA 09:51
        Denver - Seattle | Tue, Nov 3 | Frontier Airlines
        S$ 105
        38% off
        S$ 170 S$ 105
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Sat, Nov 14 | Frontier Airlines
        S$ 114
        33% off
        S$ 170 S$ 114
      • DEN 13:04
        3h 8m
        Direct
        SEA 15:12
        Denver - Seattle | Wed, Oct 28 | Frontier Airlines
        S$ 114
        33% off
        S$ 170 S$ 114
      • DEN 13:14
        3h 8m
        Direct
        SEA 15:22
        Denver - Seattle | Fri, Nov 27 | Frontier Airlines
        S$ 119
        30% off
        S$ 170 S$ 119
      • DEN 09:10
        10h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Tue, Nov 17 | Frontier Airlines
        S$ 92
        46% off
        S$ 170 S$ 92
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Mon, Nov 2 | Frontier Airlines
        S$ 108
        36% off
        S$ 170 S$ 108
      • DEN 22:55
        20h 59m
        1 stop
        SEA 18:54
        Denver - Seattle | Mon, Nov 16 | Frontier Airlines
        S$ 111
        35% off
        S$ 170 S$ 111
      • DEN 12:23
        8h 46m
        1 stop
        SEA 20:09
        Denver - Seattle | Sat, Nov 14 | American Airlines
        S$ 114
        33% off
        S$ 170 S$ 114
      • DEN 13:10
        6h 44m
        1 stop
        SEA 18:54
        Denver - Seattle | Wed, Nov 18 | Frontier Airlines
        S$ 119
        30% off
        S$ 170 S$ 119
      • DEN 13:00
        17h 25m
        1 stop
        SEA 14:00
        Denver - Seattle | Mon, Oct 5 | Normal Airline
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Flight prices 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

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 September, with an average price of S$ 90. June sees the highest fares, around S$ 244.

S$ 244
S$ 167
S$ 90
S$ 13
  • S$ 90
    Sep
  • S$ 175
    Oct
  • S$ 170
    Nov
  • S$ 191
    Dec
  • S$ 172
    Jan
  • S$ 183
    Feb
  • S$ 191
    Mar
  • S$ 154
    Apr
  • S$ 205
    May
  • S$ 244
    Jun
  • S$ 226
    Jul
  • S$ 200
    Aug

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 Wednesday, with average prices lower than other days. Try to avoid departing on Friday, as fares are typically the highest.

S$ 221
S$ 186
S$ 150
S$ 115
    Cheapest
  • S$ 187
    Mon
  • S$ 169
    Tue
  • S$ 150
    Wed
  • S$ 202
    Thu
  • S$ 221
    Fri
  • S$ 204
    Sat
  • S$ 218
    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 S$ 38) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From S$ 38
Delta Air Lines
From S$ 99
American Airlines
From S$ 114
United Airlines
From S$ 150
Alaska Airlines
From S$ 154
Sun Country Airlines
From S$ 265
Hahn Air
From S$ 338

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
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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 S$ 38
Cheapest return ticket price S$ 175

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 S$ 296 in October, 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.
  • One-way flights from Denver International Airport to Seattle-Tacoma International Airport currently start from S$ 38, and round-trip fares start from S$ 175. 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 S$ 238. 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 S$ 38. 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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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.