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Denver International Airport to Seattle Tacoma Intl. Airport flight

Explore the cheapest one-way and round-trip flights from Denver International Airport to Seattle Tacoma Intl. Airport over the next 90 days, with one-way fares from €27 and round-trip from €122. Based on Trip.com's latest 7-day flight data.

    • Cheapest nonstop
      DEN 1:32 PM
      3h 11m
      Nonstop
      SEA 3:43 PM
      Denver - Seattle | Mon, Dec 7 | Frontier Airlines
      SEA 4:58 PM
      2h 50m
      Nonstop
      DEN 8:48 PM
      Seattle - Denver | Mon, Dec 14 | Frontier Airlines
      €122 €158
      23% off
      23% off
      €158 €122
    • DEN 1:32 PM
      3h 11m
      Nonstop
      SEA 3:43 PM
      Denver - Seattle | Sat, Dec 12 | Frontier Airlines
      SEA 4:58 PM
      2h 50m
      Nonstop
      DEN 8:48 PM
      Seattle - Denver | Wed, Dec 16 | Frontier Airlines
      €122 €158
      23% off
      23% off
      €158 €122
    • DEN 1:32 PM
      3h 11m
      Nonstop
      SEA 3:43 PM
      Denver - Seattle | Wed, Dec 9 | Frontier Airlines
      SEA 4:58 PM
      2h 50m
      Nonstop
      DEN 8:48 PM
      Seattle - Denver | Wed, Dec 16 | Frontier Airlines
      €122 €158
      23% off
      23% off
      €158 €122
    • DEN 1:32 PM
      3h 11m
      Nonstop
      SEA 3:43 PM
      Denver - Seattle | Sat, Dec 5 | Frontier Airlines
      SEA 4:58 PM
      2h 50m
      Nonstop
      DEN 8:48 PM
      Seattle - Denver | Wed, Dec 9 | Frontier Airlines
      €122
      23% off
      €158 €122
    • DEN 1:32 PM
      3h 8m
      Nonstop
      SEA 3:40 PM
      Denver - Seattle | Wed, Dec 2 | Frontier Airlines
      SEA 4:58 PM
      2h 50m
      Nonstop
      DEN 8:48 PM
      Seattle - Denver | Mon, Dec 7 | Frontier Airlines
      €125
      21% off
      €158 €125
    • DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Wed, Nov 25 | Frontier Airlines
      SEA 4:58 PM
      2h 48m
      Nonstop
      DEN 8:46 PM
      Seattle - Denver | Wed, Dec 2 | Frontier Airlines
      €131
      17% off
      €158 €131
    • DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Thu, Nov 26 | Frontier Airlines
      SEA 4:58 PM
      2h 48m
      Nonstop
      DEN 8:46 PM
      Seattle - Denver | Wed, Dec 2 | Frontier Airlines
      €131
      17% off
      €158 €131
    • DEN 1:32 PM
      3h 11m
      Nonstop
      SEA 3:43 PM
      Denver - Seattle | Wed, Dec 16 | Frontier Airlines
      SEA 1:37 PM
      2h 49m
      Nonstop
      DEN 5:26 PM
      Seattle - Denver | Wed, Dec 23 | Frontier Airlines
      €135
      15% off
      €158 €135
    • DEN 6:00 AM
      3h 10m
      Nonstop
      SEA 8:10 AM
      Denver - Seattle | Fri, Nov 6 | Delta Air Lines
      SEA 7:23 AM
      2h 51m
      Nonstop
      DEN 11:14 AM
      Seattle - Denver | Sun, Nov 8 | Alaska Airlines
      €138
      13% off
      €158 €138
    • DEN 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Denver - Seattle | Sat, Oct 31 | Normal Airline
      SEA 3:00 PM
      6h
      Nonstop
      DEN 4:00 PM
      Seattle - Denver | Mon, Nov 2 | Normal Airline
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    • Cheapest
      DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Sun, Nov 22 | Frontier Airlines
      €27 €100
      73% off
      73% off
      €100 €27
    • DEN 1:55 PM
      3h 11m
      Nonstop
      SEA 4:06 PM
      Denver - Seattle | Sat, Dec 19 | Frontier Airlines
      €53 €100
      47% off
      47% off
      €100 €53
    • DEN 6:00 AM
      3h 12m
      Nonstop
      SEA 8:12 AM
      Denver - Seattle | Sun, Nov 22 | Delta Air Lines
      €70 €100
      30% off
      30% off
      €100 €70
    • DEN 6:05 AM
      3h 18m
      Nonstop
      SEA 8:23 AM
      Denver - Seattle | Sat, Dec 19 | Delta Air Lines
      €71
      28% off
      €100 €71
    • DEN 10:55 PM
      20h 59m
      1 stop
      SEA 6:54 PM
      Denver - Seattle | Mon, Nov 16 | Frontier Airlines
      €78
      22% off
      €100 €78
    • DEN 1:32 PM
      3h 8m
      Nonstop
      SEA 3:40 PM
      Denver - Seattle | Fri, Dec 4 | Frontier Airlines
      €80
      20% off
      €100 €80
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Wed, Nov 18 | Frontier Airlines
      €81
      19% off
      €100 €81
    • DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Fri, Nov 27 | Frontier Airlines
      €84
      16% off
      €100 €84
    • DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Mon, Nov 23 | Frontier Airlines
      €86
      14% off
      €100 €86
    • DEN 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Denver - Seattle | Sat, Oct 31 | Normal Airline
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    • Cheapest nonstop
      DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Sun, Nov 22 | Frontier Airlines
      €27 €100
      73% off
      73% off
      €100 €27
    • DEN 1:55 PM
      3h 11m
      Nonstop
      SEA 4:06 PM
      Denver - Seattle | Sat, Dec 19 | Frontier Airlines
      €53 €100
      47% off
      47% off
      €100 €53
    • DEN 6:00 AM
      3h 12m
      Nonstop
      SEA 8:12 AM
      Denver - Seattle | Sun, Nov 22 | Delta Air Lines
      €70 €100
      30% off
      30% off
      €100 €70
    • DEN 6:05 AM
      3h 18m
      Nonstop
      SEA 8:23 AM
      Denver - Seattle | Sat, Dec 19 | Delta Air Lines
      €71
      28% off
      €100 €71
    • DEN 1:32 PM
      3h 8m
      Nonstop
      SEA 3:40 PM
      Denver - Seattle | Fri, Dec 4 | Frontier Airlines
      €80
      20% off
      €100 €80
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Wed, Nov 18 | Frontier Airlines
      €81
      19% off
      €100 €81
    • DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Fri, Nov 27 | Frontier Airlines
      €84
      16% off
      €100 €84
    • DEN 1:14 PM
      3h 8m
      Nonstop
      SEA 3:22 PM
      Denver - Seattle | Mon, Nov 23 | Frontier Airlines
      €86
      14% off
      €100 €86
    • DEN 1:32 PM
      3h 8m
      Nonstop
      SEA 3:40 PM
      Denver - Seattle | Wed, Dec 2 | Frontier Airlines
      €88
      12% off
      €100 €88
    • DEN 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Denver - Seattle | Sat, Oct 31 | Normal Airline
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    • Cheapest nonstop
      DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Wed, Nov 18 | Frontier Airlines
      €81 €331
      76% off
      76% off
      €331 €81
    • DEN 1:32 PM
      3h 11m
      Nonstop
      SEA 3:43 PM
      Denver - Seattle | Sat, Dec 5 | Frontier Airlines
      €89 €331
      73% off
      73% off
      €331 €89
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Mon, Nov 16 | Frontier Airlines
      €96 €331
      71% off
      71% off
      €331 €96
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Fri, Nov 6 | Frontier Airlines
      €121
      63% off
      €331 €121
    • DEN 6:05 AM
      3h 18m
      Nonstop
      SEA 8:23 AM
      Denver - Seattle | Sun, Dec 20 | Delta Air Lines
      €126
      62% off
      €331 €126
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Fri, Nov 13 | Frontier Airlines
      €149
      55% off
      €331 €149
    • DEN 3:22 PM
      3h 9m
      Nonstop
      SEA 5:31 PM
      Denver - Seattle | Fri, Dec 11 | Alaska Airlines
      €160
      52% off
      €331 €160
    • DEN 6:00 AM
      3h 10m
      Nonstop
      SEA 8:10 AM
      Denver - Seattle | Sun, Nov 1 | Delta Air Lines
      €165
      50% off
      €331 €165
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Sat, Nov 7 | Frontier Airlines
      €167
      50% off
      €331 €167
    • DEN 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Denver - Seattle | Sat, Oct 31 | Normal Airline
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    • Cheapest nonstop
      DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Sat, Oct 31 | Frontier Airlines
      €100 €331
      70% off
      70% off
      €331 €100
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Fri, Oct 30 | Frontier Airlines
      €123 €331
      63% off
      63% off
      €331 €123
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Wed, Nov 4 | Frontier Airlines
      €159 €331
      52% off
      52% off
      €331 €159
    • DEN 7:03 AM
      3h 4m
      Nonstop
      SEA 9:07 AM
      Denver - Seattle | Sun, Nov 1 | Alaska Airlines
      €162
      51% off
      €331 €162
    • DEN 6:00 AM
      3h 10m
      Nonstop
      SEA 8:10 AM
      Denver - Seattle | Sun, Nov 1 | Delta Air Lines
      €165
      50% off
      €331 €165
    • DEN 1:04 PM
      3h 8m
      Nonstop
      SEA 3:12 PM
      Denver - Seattle | Mon, Nov 2 | Frontier Airlines
      €170
      49% off
      €331 €170
    • DEN 6:42 PM
      3h 6m
      Nonstop
      SEA 8:48 PM
      Denver - Seattle | Thu, Nov 5 | Delta Air Lines
      €235
      28% off
      €331 €235
    • DEN 1:55 PM
      3h 13m
      Nonstop
      SEA 4:08 PM
      Denver - Seattle | Tue, Nov 3 | Delta Air Lines
      €294
      11% off
      €331 €294
    • DEN 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Denver - Seattle | Sat, Oct 31 | Normal Airline
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    • DEN 3:30 PM
      2h 59m
      Nonstop
      SEA 5:29 PM
      Denver - Seattle | Sat, Oct 31 | Alaska Airlines
      €138 €386
      64% off
      64% off
      €386 €138
    • DEN 3:30 PM
      2h 59m
      Nonstop
      SEA 5:29 PM
      Denver - Seattle | Fri, Oct 30 | Alaska Airlines
      €162 €386
      57% off
      57% off
      €386 €162
    • DEN 3:05 PM
      3h 2m
      Nonstop
      SEA 5:07 PM
      Denver - Seattle | Wed, Jan 6 | Alaska Airlines
      €135 €386
      65% off
      65% off
      €386 €135
    • DEN 3:25 PM
      3h 2m
      Nonstop
      SEA 5:27 PM
      Denver - Seattle | Fri, Nov 6 | Alaska Airlines
      €158
      59% off
      €386 €158
    • DEN 3:25 PM
      3h 2m
      Nonstop
      SEA 5:27 PM
      Denver - Seattle | Mon, Nov 9 | Alaska Airlines
      €190
      51% off
      €386 €190
    • DEN 4:05 PM
      3h 2m
      Nonstop
      SEA 6:07 PM
      Denver - Seattle | Fri, Dec 18 | United Airlines
      €214
      45% off
      €386 €214
    • DEN 4:05 PM
      3h 2m
      Nonstop
      SEA 6:07 PM
      Denver - Seattle | Sun, Dec 20 | United Airlines
      €220
      43% off
      €386 €220
    • DEN 3:25 PM
      3h 2m
      Nonstop
      SEA 5:27 PM
      Denver - Seattle | Sun, Nov 15 | Alaska Airlines
      €222
      42% off
      €386 €222
    • DEN 4:05 PM
      3h 2m
      Nonstop
      SEA 6:07 PM
      Denver - Seattle | Tue, Dec 22 | United Airlines
      €229
      41% off
      €386 €229
    • DEN 1:00 PM
      17h 25m
      1 stop
      SEA 2:00 PM
      Denver - Seattle | Sat, Oct 31 | Normal Airline
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Displayed flight fares from Denver to Seattle are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

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

What is the cheapest month for one-way flights from Denver International Airport to Seattle Tacoma Intl. Airport?

Data is based on average one-way flight prices from Denver International Airport to Seattle Tacoma Intl. Airport in Trip.com's database over the past 12 months.

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 Intl. Airport, the best time to buy is in October, with an average price of €59. You’ll want to avoid June, when the average price can reach as high as €172.

€172
€116
€59
€3
  • €59
    Oct
  • €120
    Nov
  • €134
    Dec
  • €121
    Jan
  • €129
    Feb
  • €134
    Mar
  • €109
    Apr
  • €144
    May
  • €172
    Jun
  • €159
    Jul
  • €141
    Aug
  • €156
    Sep

What is the cheapest day of the week to fly from Denver International Airport to Seattle Tacoma Intl. Airport?

The data is based on the past 12 months and shows the average ticket prices from Denver International Airport to Seattle Tacoma Intl. 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 Intl. Airport is Wednesday, with average fares typically lower than other days. You’ll want to avoid flying on Thursday, as ticket prices are usually the highest that day.

€157
€134
€111
€88
    Cheapest
  • €147
    Mon
  • €120
    Tue
  • €111
    Wed
  • €157
    Thu
  • €154
    Fri
  • €148
    Sat
  • €152
    Sun

Which airline offers the cheapest flights from Denver International Airport to Seattle Tacoma Intl. Airport?

The cheapest airline flying from Denver International Airport to Seattle Tacoma Intl. Airport is Frontier Airlines (from €27) among 7 carriers operating this route. Based on Trip.com's latest 7-day flight data.

Frontier Airlines
From €27
Delta Air Lines
From €70
Alaska Airlines
From €89
American Airlines
From €102
United Airlines
From €106
Sun Country Airlines
From €176
Hahn Air
From €180

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What is the flight schedule from Denver International Airport to Seattle Tacoma Intl. 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. AS493

    Denver International Airport

    3:25 PM

    DEN

    3h 2m

    5:27 PM

    SEA

    S M T - - - S
    Search

  2. AS682

    Denver International Airport

    12:00 PM

    DEN

    2h 59m

    1:59 PM

    SEA

    S M T W T F S
    Search

  3. F91175

    Denver International Airport

    1:07 PM

    DEN

    3h 5m

    3:12 PM

    SEA

    S - T - T F -
    Search

  4. AS317

    Denver International Airport

    7:07 AM

    DEN

    3h 3m

    9:10 AM

    SEA

    S M T W T F S
    Search

  5. DL1731

    Denver International Airport

    6:45 AM

    DEN

    3h 14m

    8:59 AM

    SEA

    S M T W T F S
    Search

  6. DL2544

    Denver International Airport

    5:40 AM

    DEN

    1h 35m

    Nonstop

    7:15 AM

    SLC

    S M T W T - S
    Search

  7. DL2874

    Salt Lake City International Airport

    8:00 AM

    SLC

    2h 33m

    Nonstop

    9:33 AM

    SEA

    S M T W T F S

  8. F92341

    Denver International Airport

    2:22 PM

    DEN

    2h 33m

    Nonstop

    3:55 PM

    LAX

    S M T W T F S
    Search

  9. F91177

    Los Angeles Intl. Airport

    5:02 PM

    LAX

    3h

    Nonstop

    8:02 PM

    SEA

    S M T W T F S

  10. F94339

    Denver International Airport

    10:55 PM

    DEN

    2h 28m

    Nonstop

    12:23 AM

    LAX

    S M T W T F S
    Search

  11. F91177

    Los Angeles Intl. Airport

    5:02 PM

    LAX

    3h

    Nonstop

    8:02 PM

    SEA

    S M T W T F S
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About Denver International Airport and Seattle Tacoma Intl. Airport

Learn about Denver International Airport (DEN) and Seattle Tacoma Intl. Airport (SEA) — including location, terminals, transportation, and travel tips.

Flight distance 1,646.85 km
Cheapest one-way ticket price €27
Cheapest return ticket price €120

FAQs for Denver International Airport to Seattle Tacoma Intl. Airport Flights

  • How long is the flight from Denver International Airport to Seattle Tacoma Intl. Airport?

    Denver International Airport to Seattle Tacoma Intl. Airport takes about 2 hours 33 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 Intl. Airport (SEA).
  • The earliest flight from Denver International Airport to Seattle Tacoma Intl. Airport departs at 06:00, and the last departs at 21:15, with about 30 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 Intl. Airport (SEA) is quite popular. Without considering departure times or holidays, tickets cost around €195 in November, the most expensive month to book this route.
  • The earliest flight departs from Denver International Airport (DEN) at 05:30 and arrives in Seattle Tacoma Intl. Airport (SEA) at 07:33.
  • The latest flight departs from Denver International Airport (DEN) at 21:30 and arrives in Seattle Tacoma Intl. Airport (SEA) at 23:29.
    • 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.
  • One-way flights from Denver International Airport to Seattle Tacoma Intl. Airport currently start from €27, and round-trip fares start from €120. 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 Intl. Airport, with an average flight time of 2 hours 39 minutes, and around 131 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 Intl. Airport is €164. 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 Intl. Airport, with one-way fares starting from €27. Compare final prices carefully, as baggage, seat selection and payment fees may apply.
  • Denver International Airport to Seattle Tacoma Intl. Airport operates around 126 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 Intl. 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 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, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, 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.