Cheap Flights from Denver, CO to Seattle, WA from $71

Return flight: Seattle – Denver
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On Cheapflightsplus.com you will find 7 direct and 48 connecting flights from Denver to Seattle. You can compare airfare deals from 6 airlines and multiple travel sites from $71, book and save on cheap plane tickets and last minute offers. Also check out DEN-SEA flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip Denver to Seattle Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $71 (one-way), $122 (round-trip).
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Best Flights from Denver to Seattle Today

Take a look at the list of non stop flights and flights with layovers from Denver to Seattle with the lowest price of $71. The fastest direct flight takes 2h 57m and the fastest connecting – 4h 51m.
Price Departure Arrival Flight Duration Airline Flight
from $71
Find flight
16:44
Denver
Denver International
 18:46
Seattle
Seattle-Tacoma Intl
 3h 2m Frontier Airlines
F91175
from $76
Find flight
15:03
Denver
Denver International
 17:00
Seattle
Seattle-Tacoma Intl
 2h 57m Hawaiian Airlines
HA4865
from $80
Find flight
15:03
Denver
Denver International
 17:00
Seattle
Seattle-Tacoma Intl
 2h 57m Alaska Airlines
AS535
from $95
Find flight
07:00
Denver
Denver International
 14:06
Seattle
Seattle-Tacoma Intl
 8h 6m
layover
3h 15m - Las Vegas
 Frontier Airlines
F92015
F92407
from $105
Find flight
11:33
Denver
Denver International
 15:24
Seattle
Seattle-Tacoma Intl
 4h 51m
layover
1h 10m - Portland
 Alaska Airlines
AS1136
AS2188
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*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 16, 2025
Full flight schedule will help you in detecting at what time planes fly from Denver to Seattle. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
05:30 — 10:48
05:30 — 07:12 UA2367 United Airlines
Denver — San Francisco
1h 18m stop
08:30 — 10:48 UA2367 United Airlines
San Francisco — Seattle
6h 18m
including layover
Find flight
from$237
06:00 — 08:01
06:00 — 08:01 UA751 United Airlines
Denver — Seattle
3h 1m
Find flight
from$104
07:00 — 14:06
06:00 — 07:09 F92015 Frontier Airlines
Denver — Las Vegas
3h 15m stop
15:44 — 18:38 F92407 Frontier Airlines
Las Vegas — Seattle
8h 6m
including layover
Find flight
from$95
08:08 — 10:08
08:08 — 10:08 UA204 United Airlines
Denver — Seattle
3h
Find flight
from$124
11:20 — 13:18
11:20 — 13:18 UA690 United Airlines
Denver — Seattle
2h 58m
Find flight
from$149
11:33 — 15:24
11:33 — 13:20 AS1136 Alaska Airlines
Denver — Portland
1h 10m stop
14:30 — 15:24 AS2188 Alaska Airlines
Portland — Seattle
4h 51m
including layover
Find flight
from$105
11:33 — 16:40
11:33 — 13:20 HA4863 Hawaiian Airlines
Denver — Portland
2h 20m stop
15:40 — 16:40 HA6419 Hawaiian Airlines
Portland — Seattle
6h 7m
including layover
Find flight
from$136
11:33 — 16:40
11:33 — 13:20 AS1136 Alaska Airlines
Denver — Portland
2h 20m stop
15:40 — 16:40 AS3446 Alaska Airlines
Portland — Seattle
6h 7m
including layover
Find flight
from$145
11:33 — 17:20
11:33 — 13:20 HA4863 Hawaiian Airlines
Denver — Portland
1h 10m stop
14:30 — 15:21 HA6417 Hawaiian Airlines
Portland — Redmond
40m stop
16:01 — 17:20 HA6513 Hawaiian Airlines
Redmond — Seattle
6h 47m
including layover
Find flight
from$183
11:33 — 17:20
11:33 — 13:20 AS1136 Alaska Airlines
Denver — Portland
1h 10m stop
14:30 — 15:21 AS3003 Alaska Airlines
Portland — Redmond
40m stop
16:01 — 17:20 AS3363 Alaska Airlines
Redmond — Seattle
6h 47m
including layover
Find flight
from$196
13:56 — 15:54
13:56 — 15:54 UA1951 United Airlines
Denver — Seattle
2h 58m
Find flight
from$134
15:03 — 17:00
15:03 — 17:00 HA4865 Hawaiian Airlines
Denver — Seattle
2h 57m
Find flight
from$76
15:03 — 17:00
15:03 — 17:00 AS535 Alaska Airlines
Denver — Seattle
2h 57m
Find flight
from$80
16:00 — 20:56
16:00 — 17:51 UA2633 United Airlines
Denver — San Francisco
57m stop
18:55 — 21:11 UA2019 United Airlines
San Francisco — Seattle
5h 56m
including layover
Find flight
from$148
16:44 — 18:46
16:44 — 18:46 F91175 Frontier Airlines
Denver — Seattle
3h 2m
Find flight
from$71
*Departure and arrival times - local. Updated on September 16, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from Denver to Seattle depends on and how to choose the most interesting flight option for you.

Distance between Denver and Seattle is 1644 miles. Time difference between the cities is 1h. Airplanes depart 05:02 to 23:54 from 2 Denver airports and arrive 05:02 to 23:54 to 3 Seattle airports. Average flight time is 2h 58m.

  • The fastest flight 2h 57m
  • Average flight time 2h 58m
  • The earliest flight 05:02
  • The latest flight 23:54
  • Distance 1022 ml

The cheapest months to travel to Seattle are august (from 71 $), july (from 92 $), may (from 96 $).

The most expensive months are november (from 183 $), september (from 149 $), february (from 136 $).

What is the lowest airfare Denver to Seattle?

The cheapest plane ticket found by our users is $71. This airfare is for economy class on one-way F91175 flight by Frontier Airlines for July 27, 2025 which leaves Denver International in Denver at 16:44 am and arrives at Seattle Seattle-Tacoma Intl at 18:46.

Economy class
$71
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Business class
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First class
?
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Popular Airlines on the Route

The flight Denver — Seattle is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 10 departures per week at the price of from $ 80 . And the most expensive tickets are offered by United Airlines airline - from $ 1564.

Direct flights

There are 7 nonstop flights on the route. The fastest direct flight is HA4865 by Hawaiian Airlines takes 2h 57m and the cheapest is F91175 by Frontier Airlines for $71.

  • AS - Alaska Airlines
    from $80
    Find
  • F9 - Frontier Airlines
    from $71
    Find
  • HA - Hawaiian Airlines
    from $76
    Find
  • UA - United Airlines
    from $104
    Find
See more direct flights

Connecting Flights

There are 48 flights with layovers on the route. The fastest connecting flight is AS1136 by Alaska Airlines takes 4h 51m and the cheapest is F91175 by Frontier Airlines for $95.

  • AS - Alaska Airlines
    from $105
    Find
  • F9 - Frontier Airlines
    from $95
    Find
  • SY - Sun Country Airlines
    from $310
    Find
  • HA - Hawaiian Airlines
    from $136
    Find
  • UA - United Airlines
    from $148
    Find
  • G4 - Allegiant Air
    from $244
    Find
See more connecting flights

Airports

You can fly from Denver to Seattle from 2 airports (Denver International, Arapahoe Co).

Denver airports

  • Denver International-DEN
    from $71
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  • Arapahoe Co-APA
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Seattle airports

  • Boeing Field International Airport-BFI
    Find
  • Seattle-Tacoma Intl-SEA
    Find
  • Kenmore Air Harbor SPB-LKE
    Find

Airplanes

There are flights to Seattle from Denver by 6 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.

Top Domestic Destinations from Denver

You may also consider searching for discounted plane tickets to some other popular places from Denver within United States.

Top International Destinations from Denver

Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.

How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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