United Airlines
Star Alliance
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United States
Seattle–Tacoma International Airport
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United States
Denver International Airport
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Scan through all non-stop flights from Seattle / Tacoma to Denver. The full flight schedule below gives an overview of all non-stop flights from SEA to DEN, which includes the daily timetable of every operating airline for the upcoming 12 months.
Note: for airline-specific flight schedules, please scroll further down.
The Mediterranean regions near Denver are known for their warm, arid summers, where temperatures often go beyond 30°C (86°F). In some inland spots, the heat can climb even higher, sometimes reaching 40°C (104°F) or more. The winters are pleasantly mild, accompanied by some rainfall. This lovely climate, paired with breathtaking landscapes and bright, sunny days attract visitors from around the globe.
Denver is a wonderful place to visit all year long, but spring (March-May) and fall (September-November) are the best seasons to visit. The weather is pleasantly warm during these times, especially since the summers can be quite hot in those regions.
In total there are 5 airlines operating nonstop flights from Seattle / Tacoma SEA to Denver DEN. 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 SEA DEN flight schedule.
Flights from SEA to DEN are operated 109 times a week, with an average of 16 flights per day. Departure times vary between 05:00 - 21:14. The earliest flight departs at 05:00, the last flight departs at 21:14. 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 Seattle / Tacoma to Denver takes 2 hours and 50 minutes. The flight distance between Seattle / Tacoma and Denver is 1,021 miles (or 1,643 km).
There are 2 airports in Denver: Denver International Airport (DEN) and Centennial Airport (APA).
There are 109 flights per week flying from Seattle / Tacoma to Denver (as of April 2026).
2 hours and 50 minutes is the average flight time from Seattle / Tacoma to Denver.
The distance from Seattle / Tacoma to Denver is 1,021 miles (1,643 kilometers).
Alaska, Delta, Frontier Airlines, Southwest Airlines and United Airlines are flying nonstop from Seattle / Tacoma to Denver.
Oneworld, SkyTeam and Star Alliance are flying nonstop from Seattle / Tacoma to Denver.
You can fly non-stop in Economy and Business Class.
Aircraft types that fly from Seattle / Tacoma to Denver:
The earliest flight departs at 05:00 from Seattle / Tacoma and arrives at 08:45 at Denver.
The latest flight departs at 21:14 from Seattle / Tacoma and arrives at 01:09 at Denver.
1,021 miles (1,643 km) · 2h 50m
05:00
08:45
United Airlines
Star Alliance
UA 2601
United Airlines
Airbus A319
Y
W
J
F
05:00
08:44
United Airlines
Star Alliance
UA 2601
United Airlines
Boeing 737 MAX 8
Y
W
J
F
05:00
08:41
United Airlines
Star Alliance
UA 2601
United Airlines
Boeing 737 MAX 8
Y
W
J
F
05:00
08:44
United Airlines
Star Alliance
UA 2601
United Airlines
Boeing 737 MAX 8
Y
W
J
F
05:05
08:49
United Airlines
Star Alliance
UA 2601
United Airlines
Boeing 737 MAX 8
Y
W
J
F
05:30
09:05
Southwest Airlines
WN 714
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
05:30
09:05
Southwest Airlines
WN 1310
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
05:35
09:10
Southwest Airlines
WN 1310
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
05:45
09:25
Southwest Airlines
WN 1310
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
06:00
09:40
Southwest Airlines
WN 714
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
06:30
10:05
Southwest Airlines
WN 1310
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737 MAX 9
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737 MAX 9
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737 MAX 9
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:05
10:51
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:05
10:54
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:05
10:54
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
08:00
11:40
Southwest Airlines
WN 4194
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
08:00
11:40
Southwest Airlines
WN 4194
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
08:30
12:26
Delta
SkyTeam
DL 3675
Delta
Embraer 175
Y
W
J
F
08:30
12:26
Delta
SkyTeam
DL 3675
Delta
Embraer 175
Y
W
J
F
08:35
12:17
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
08:51
12:41
United Airlines
Star Alliance
UA 1505
United Airlines
Boeing 737-800
Y
W
J
F
08:51
12:40
United Airlines
Star Alliance
UA 1505
United Airlines
Boeing 737-800
Y
W
J
F
08:55
12:45
United Airlines
Star Alliance
UA 1505
United Airlines
Boeing 737-800
Y
W
J
F
09:00
12:40
Southwest Airlines
WN 4194
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
09:05
12:40
Southwest Airlines
WN 4660
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
09:20
13:00
Southwest Airlines
WN 4195
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
10:30
14:10
Southwest Airlines
WN 4660
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
11:05
14:45
Southwest Airlines
WN 4194
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
11:10
14:45
Southwest Airlines
WN 4660
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
11:30
15:25
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
11:30
15:25
Alaska
Oneworld
AS 535
Alaska
Boeing 737 MAX 9
Y
W
J
F
11:34
15:25
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
11:34
15:25
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
11:34
15:25
Alaska
Oneworld
AS 535
Alaska
Boeing 737 MAX 9
Y
W
J
F
12:01
16:02
Alaska
Oneworld
AS 1332
Alaska
Boeing 737 MAX 8
Y
W
J
F
12:01
16:02
Alaska
Oneworld
AS 1332
Alaska
Boeing 737 MAX 8
Y
W
J
F
12:01
16:02
Alaska
Oneworld
AS 1332
Alaska
Boeing 737 MAX 8
Y
W
J
F
12:42
16:37
Frontier Airlines
F9 3406
Frontier Airlines
Airbus A320neo
Y
W
J
F
12:51
16:42
United Airlines
Star Alliance
UA 1351
United Airlines
Airbus A321neo
Y
W
J
F
12:54
16:45
United Airlines
Star Alliance
UA 1351
United Airlines
Boeing 737 MAX 9
Y
W
J
F
12:54
16:45
United Airlines
Star Alliance
UA 1351
United Airlines
Boeing 737-800
Y
W
J
F
12:54
16:45
United Airlines
Star Alliance
UA 1351
United Airlines
Boeing 737 MAX 8
Y
W
J
F
13:00
16:40
Southwest Airlines
WN 4195
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
13:17
17:11
Alaska
Oneworld
AS 786
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
13:17
17:11
Alaska
Oneworld
AS 786
Alaska
Boeing 737 MAX 9
Y
W
J
F
13:17
17:11
Alaska
Oneworld
AS 786
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
13:25
17:10
Southwest Airlines
WN 376
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737 MAX 9
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737 MAX 8
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737 MAX 9
Y
W
J
F
13:26
17:07
Alaska
Oneworld
AS 1413
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
13:36
17:30
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
13:36
17:30
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
13:36
17:30
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
13:36
17:30
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
13:36
17:30
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
13:36
17:30
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
13:55
17:40
Southwest Airlines
WN 4195
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:11
18:10
Delta
SkyTeam
DL 4026
Delta
Embraer 175
Y
W
J
F
14:20
18:00
Southwest Airlines
WN 4195
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
14:35
18:10
Southwest Airlines
WN 1217
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
14:45
18:15
Southwest Airlines
WN 1841
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
14:45
18:15
Southwest Airlines
WN 1217
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
15:40
19:31
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:48
19:39
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:48
19:39
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737-800
Y
W
J
F
15:48
19:39
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:48
19:39
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:48
19:36
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737-800
Y
W
J
F
15:48
19:39
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737-800
Y
W
J
F
15:48
19:39
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
16:20
20:11
Frontier Airlines
F9 3406
Frontier Airlines
Airbus A321neo
Y
W
J
F
16:20
20:11
Frontier Airlines
F9 3406
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
16:45
20:25
Southwest Airlines
WN 4831
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
18:00
21:49
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:00
21:49
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:00
21:49
Alaska
Oneworld
AS 602
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
18:00
21:49
Alaska
Oneworld
AS 602
Alaska
Boeing 737 MAX 9
Y
W
J
F
18:00
21:49
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:00
21:49
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
18:01
21:45
Alaska
Oneworld
AS 3072
Alaska
Embraer 175
Y
W
J
F
19:05
22:56
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-800
Y
W
J
F
19:05
22:56
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-800
Y
W
J
F
19:05
22:56
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737 MAX 8
Y
W
J
F
19:05
22:56
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737 MAX 8
Y
W
J
F
19:05
22:56
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-800
Y
W
J
F
19:12
22:59
Frontier Airlines
F9 1176
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
19:12
22:59
Frontier Airlines
F9 1176
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
19:46
23:32
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
19:46
23:32
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
19:46
23:32
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:00
23:50
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:00
23:50
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:00
23:50
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:00
23:50
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:05
23:59
Alaska
Oneworld
AS 642
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
20:07
23:59
Frontier Airlines
F9 1176
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737 MAX 9
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737 MAX 9
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737 MAX 9
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737 MAX 9
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737 MAX 9
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
20:11
23:56
Alaska
Oneworld
AS 642
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
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