Flights from Denver to Seattle Tacoma

Our cheapest offers for flights from Denver to Seattle Tacoma

Here you can compare cheap flights from Denver (DEN) to Seattle Tacoma (SEA) for one-way or return trips. The following offers were searched for and found on idealo during the last few days. Or start your own flight search to Seattle Tacoma. Prices and availability may change at any time.

Outbound Return Airlines Shop Baggage Price
Denver
Seattle-Tacoma
Outbound
04/21/25
direct
F93405
03h 07min
Return
05/19/25
1 Stopover (PHX)
F93974, F91376
10h 04min
Frontier Airlines ?
$122
Best option
Denver
Seattle-Tacoma
Outbound
06/08/25
direct
F91175
03h 09min
Return
06/12/25
direct
F93406
02h 47min
Frontier Airlines
$154
Denver
Seattle-Tacoma
Outbound
04/21/25
direct
F93405
03h 07min
Return
05/19/25
1 Stopover (PHX)
F93974, F91376
10h 04min
Frontier Airlines
$125
Denver
Seattle-Tacoma
Outbound
04/21/25
direct
F93405
03h 07min
Return
05/19/25
1 Stopover (PHX)
F93974, F91376
10h 04min
Frontier Airlines
$126
Denver
Seattle-Tacoma
Outbound
04/21/25
direct
F93405
03h 07min
Return
05/19/25
1 Stopover (PHX)
F93974, F91376
10h 04min
Frontier Airlines
$130
Denver
Seattle-Tacoma
Outbound
04/21/25
direct
F93405
03h 07min
Return
05/19/25
1 Stopover (ONT)
F93163, F91500
08h 27min
Frontier Airlines
$133
Denver
Seattle-Tacoma
Outbound
04/21/25
direct
F93405
03h 07min
Return
05/19/25
1 Stopover (ONT)
F93163, F91500
08h 27min
Frontier Airlines ?
$134
Denver
Seattle-Tacoma
Outbound
06/20/25
direct
F93405
03h 05min
Return
07/19/25
direct
F91176
02h 45min
Frontier Airlines
$158
Denver
Seattle-Tacoma
Outbound
06/08/25
direct
F93405
03h 05min
Return
06/12/25
direct
F91176
02h 45min
Frontier Airlines
$162
Denver
Seattle-Tacoma
Outbound
06/20/25
direct
F91175
03h 09min
Return
07/19/25
direct
F93406
02h 47min
Frontier Airlines
$169
Prices based on recent searches, subject to last-minute changes
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Tips and tricks to help you find cheap flights from Denver to Seattle Tacoma

Favorite airline: Frontier Airlines
Frontier Airlines is the most popular airline for flights from Denver to Seattle-Tacoma.
Frontier Airlines
50 %
Delta
22 %
United Airlines
17 %
Direct flights are cheaper
Compared to flights with a stopover, direct flights are $227.00 cheaper on this route.
non stop flight
1 stop
03h 00min
07h 28min
$ 160
$ 387
The favorite connection is non-stop
Flights from Denver to Seattle-Tacoma are most often booked as a direct flight.
Route
bookings
Direct flights
03h 00min, from $ 160
94 %
1 stopover Salt Lake City International Airport, UT
07h 28min, from $ 387
6 %

Important flight information

Flight information: Denver - Seattle-Tacoma

Roundtrip from $ 121,45
Flight duration min. 03:00 / max. 09:35
Return flight duration min. 02:30/ max. 07:05
Distance 1647 km
Flights per week 159
Departure airport Airport Denver International Airport, CO (DEN)
Arrival airport Airport Seattle-Tacoma International Airport, WA (SEA)
Destination country Flights to United States
Alternative routes to United States
Alternative flights to Seattle-Tacoma
Flight destinations with a similar price