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Star Alliance
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Denver International Airport
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United States
Seattle–Tacoma International Airport
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Scan through all non-stop flights from Denver to Seattle / Tacoma. The full flight schedule below gives an overview of all non-stop flights from DEN to SEA, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
In Seattle / Tacoma, the summers are known for being warm, long, and dry, with temperatures typically reaching about 30°C (86°F). The area’s breathtaking scenery complements the sun-filled lifestyle, making it a popular destination for visitors all year round who are looking for relaxation, fun by the water, and the beauty of the outdoors.
Seattle / Tacoma is best explored from mid-spring to summer, specifically between April and September, as most rainfall occurs from October to February.
In total there are 6 airlines operating nonstop flights from Denver DEN to Seattle / Tacoma SEA. This section gives an overview of the flight schedules and timetables of every airline with direct flights for this route.
Click an airline below to view their DEN SEA flight schedule.
Flights from DEN to SEA are operated 144 times a week, with an average of 21 flights per day. Departure times vary between 06:00 - 22:45. The earliest flight departs at 06:00, the last flight departs at 22:45. However, this depends on the date you are flying so please check with the full flight schedule above to see which departure times are available on your preferred date(s) of travel.
You can fly in Economy and Business Class. Premium Economy and First Class are not available on this route (at least not as a non-stop flight).
The fastest direct flight from Denver to Seattle / Tacoma takes 3 hours. The flight distance between Denver and Seattle / Tacoma is 1,021 miles (or 1,643 km).
There are 3 airports in Seattle / Tacoma: Seattle–Tacoma International Airport (SEA), Boeing Field/King County Internat (BFI) and Kenmore Air Harbor Seaplane Base (FAA: W55) (LKE).
There are 144 flights per week flying from Denver to Seattle / Tacoma (as of July 2026).
3 hours is the average flight time from Denver to Seattle / Tacoma.
The distance from Denver to Seattle / Tacoma is 1,021 miles (1,643 kilometers).
Alaska, American Airlines, Delta, Frontier Airlines, Southwest Airlines and United Airlines are flying nonstop from Denver to Seattle / Tacoma.
Oneworld, SkyTeam and Star Alliance are flying nonstop from Denver to Seattle / Tacoma.
You can fly non-stop in Economy and Business Class.
Aircraft types that fly from Denver to Seattle / Tacoma:
The earliest flight departs at 06:00 from Denver and arrives at 07:56 at Seattle / Tacoma.
The latest flight departs at 22:45 from Denver and arrives at 00:50 at Seattle / Tacoma.
1,021 miles (1,643 km) · 3h
06:00
07:56
United Airlines
Star Alliance
UA 1482
United Airlines
Boeing 737-800
Y
W
J
F
06:00
08:00
United Airlines
Star Alliance
UA 1482
United Airlines
Airbus A320-100/200
Y
W
J
F
06:00
07:55
United Airlines
Star Alliance
UA 1482
United Airlines
Boeing 737-800
Y
W
J
F
06:00
08:00
United Airlines
Star Alliance
UA 1482
United Airlines
Airbus A320-100/200
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737 MAX 9
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737 MAX 9
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737 MAX 8
Y
W
J
F
06:02
08:05
Alaska
Oneworld
AS 643
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
06:30
08:26
Delta
SkyTeam
DL 1731
Delta
Airbus A220-300
Y
W
J
F
06:30
08:26
Delta
SkyTeam
DL 1731
Delta
Airbus A220-300
Y
W
J
F
06:30
08:26
Delta
SkyTeam
DL 1731
Delta
Airbus A220-300
Y
W
J
F
06:30
08:26
Delta
SkyTeam
DL 1731
Delta
Airbus A220-300
Y
W
J
F
06:30
08:26
Delta
SkyTeam
DL 1731
Delta
Airbus A220-300
Y
W
J
F
07:13
09:17
Frontier Airlines
F9 4545
Frontier Airlines
Airbus A321neo
Y
W
J
F
07:13
09:17
Frontier Airlines
F9 4545
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
07:45
09:45
Southwest Airlines
WN 1713
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
07:50
09:50
United Airlines
Star Alliance
UA 2271
United Airlines
Airbus A321neo
Y
W
J
F
08:00
10:05
Southwest Airlines
WN 1780
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
08:01
10:00
United Airlines
Star Alliance
UA 2271
United Airlines
Boeing 737 MAX 8
Y
W
J
F
08:01
10:00
United Airlines
Star Alliance
UA 2271
United Airlines
Boeing 737-800
Y
W
J
F
08:05
10:05
Southwest Airlines
WN 1713
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
08:40
10:42
Alaska
Oneworld
AS 317
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
08:40
10:42
Alaska
Oneworld
AS 317
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
08:40
10:42
Alaska
Oneworld
AS 317
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
08:40
10:42
Alaska
Oneworld
AS 317
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
08:40
10:42
Alaska
Oneworld
AS 317
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
08:45
10:47
Alaska
Oneworld
AS 317
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
08:45
10:47
Alaska
Oneworld
AS 317
Alaska
Boeing 737 MAX 9
Y
W
J
F
09:13
11:20
Frontier Airlines
F9 1175
Frontier Airlines
Airbus A320neo
Y
W
J
F
09:13
11:20
Frontier Airlines
F9 1175
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
09:13
11:20
Frontier Airlines
F9 1175
Frontier Airlines
Airbus A320-100/200
Y
W
J
F
09:13
11:20
Frontier Airlines
F9 1175
Frontier Airlines
Airbus A321neo
Y
W
J
F
09:13
11:20
Frontier Airlines
F9 1175
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
10:05
12:05
Southwest Airlines
WN 3051
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
11:20
13:15
Southwest Airlines
WN 4130
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
11:21
13:21
United Airlines
Star Alliance
UA 1424
United Airlines
Airbus A321neo
Y
W
J
F
11:22
13:22
United Airlines
Star Alliance
UA 1424
United Airlines
Airbus A321neo
Y
W
J
F
11:25
13:25
United Airlines
Star Alliance
UA 1424
United Airlines
Airbus A321neo
Y
W
J
F
12:30
14:25
Southwest Airlines
WN 4130
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
12:35
14:25
Southwest Airlines
WN 3051
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
12:55
14:45
Southwest Airlines
WN 4130
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737 MAX 9
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737 MAX 9
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737 MAX 9
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737 MAX 9
Y
W
J
F
12:55
14:53
Alaska
Oneworld
AS 381
Alaska
Boeing 737 MAX 9
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
13:03
15:05
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
14:00
16:00
United Airlines
Star Alliance
UA 2164
United Airlines
Airbus A320-100/200
Y
W
J
F
14:00
16:00
United Airlines
Star Alliance
UA 2164
United Airlines
Airbus A320-100/200
Y
W
J
F
15:45
17:45
Southwest Airlines
WN 4030
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
15:45
17:46
United Airlines
Star Alliance
UA 2013
United Airlines
Airbus A320-100/200
Y
W
J
F
15:58
17:59
United Airlines
Star Alliance
UA 2013
United Airlines
Boeing 737-900
Y
W
J
F
15:58
17:59
United Airlines
Star Alliance
UA 2013
United Airlines
Boeing 737 MAX 9
Y
W
J
F
16:36
18:38
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
16:36
18:38
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
16:36
18:38
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:00
20:10
Southwest Airlines
WN 1716
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
18:15
20:17
Alaska
Oneworld
AS 249
Alaska
Boeing 737 MAX 8
Y
W
J
F
18:15
20:30
Southwest Airlines
WN 1716
Southwest Airlines
Boeing 737-700
Y
W
J
F
18:15
20:17
Alaska
Oneworld
AS 249
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
18:15
20:17
Alaska
Oneworld
AS 249
Alaska
Boeing 737 MAX 8
Y
W
J
F
18:15
20:17
Alaska
Oneworld
AS 249
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:15
20:17
Alaska
Oneworld
AS 249
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
18:15
20:17
Alaska
Oneworld
AS 249
Alaska
Boeing 737 MAX 8
Y
W
J
F
18:18
20:20
Alaska
Oneworld
AS 249
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:21
20:23
Alaska
Oneworld
AS 249
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:21
20:23
Alaska
Oneworld
AS 249
Alaska
Boeing 737 MAX 9
Y
W
J
F
18:21
20:23
Alaska
Oneworld
AS 249
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:39
20:41
Delta
SkyTeam
DL 2543
Delta
Airbus A220-300
Y
W
J
F
19:10
21:10
United Airlines
Star Alliance
UA 360
United Airlines
Airbus A321neo
Y
W
J
F
19:10
21:10
United Airlines
Star Alliance
UA 360
United Airlines
Airbus A321neo
Y
W
J
F
19:20
21:19
United Airlines
Star Alliance
UA 360
United Airlines
Boeing 737 MAX 9
Y
W
J
F
19:25
21:25
Southwest Airlines
WN 760
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
19:50
21:50
Southwest Airlines
WN 1716
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
21:08
23:10
Alaska
Oneworld
AS 493
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
21:08
23:10
Alaska
Oneworld
AS 493
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
21:10
23:10
United Airlines
Star Alliance
UA 2651
United Airlines
Boeing 737 MAX 8
Y
W
J
F
21:10
23:10
United Airlines
Star Alliance
UA 2651
United Airlines
Boeing 737 MAX 8
Y
W
J
F
21:10
23:10
Southwest Airlines
WN 3856
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
21:35
23:35
Southwest Airlines
WN 3856
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
22:20
00:15
Southwest Airlines
WN 3856
Southwest Airlines
Boeing 737-700
Y
W
J
F
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