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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 6 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 90 times a week, with an average of 13 flights per day. Departure times vary between 05:00 - 21:15. The earliest flight departs at 05:00, the last flight departs at 21:15. 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 90 flights per week flying from Seattle / Tacoma to Denver (as of August 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, American Airlines, 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 21:15 from Seattle / Tacoma and arrives at 00:55 at Denver.
1,021 miles (1,643 km) · 2h 50m
05:00
08:45
United Airlines
Star Alliance
UA 2601
United Airlines
Airbus A321neo
Y
W
J
F
05:20
08:55
Southwest Airlines
WN 4697
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
06:30
10:05
Southwest Airlines
WN 1384
Southwest Airlines
Boeing 737-700
Y
W
J
F
06:40
10:15
Southwest Airlines
WN 4697
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
06:50
10:25
Southwest Airlines
WN 4697
Southwest Airlines
Boeing 737-700
Y
W
J
F
07:14
11:04
Alaska
Oneworld
AS 682
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
07:14
11:04
Alaska
Oneworld
AS 682
Alaska
Boeing 737 MAX 9
Y
W
J
F
07:14
11:04
Alaska
Oneworld
AS 682
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
08:40
12:26
Delta
SkyTeam
DL 1358
Delta
Airbus A220-300
Y
W
J
F
08:40
12:32
United Airlines
Star Alliance
UA 1505
United Airlines
Boeing 737-800
Y
W
J
F
08:40
12:32
United Airlines
Star Alliance
UA 1505
United Airlines
Boeing 737-800
Y
W
J
F
08:40
12:32
United Airlines
Star Alliance
UA 1505
United Airlines
Boeing 737-800
Y
W
J
F
08:55
12:35
Southwest Airlines
WN 1921
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
09:30
13:11
Delta
SkyTeam
DL 1358
Delta
Boeing 737-900
Y
W
J
F
10:08
14:02
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
10:08
14:02
Alaska
Oneworld
AS 535
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
10:08
14:02
Alaska
Oneworld
AS 535
Alaska
Boeing 737 MAX 9
Y
W
J
F
10:08
14:02
Alaska
Oneworld
AS 535
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
10:08
14:02
Alaska
Oneworld
AS 535
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
10:08
14:02
Alaska
Oneworld
AS 535
Alaska
Boeing 737 MAX 9
Y
W
J
F
10:20
14:10
Southwest Airlines
WN 1663
Southwest Airlines
Boeing 737-700
Y
W
J
F
10:45
14:30
Southwest Airlines
WN 2860
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
11:03
14:54
United Airlines
Star Alliance
UA 2031
United Airlines
Boeing 737-800
Y
W
J
F
11:10
14:50
Southwest Airlines
WN 4507
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
12:40
16:25
Southwest Airlines
WN 428
Southwest Airlines
Boeing 737-700
Y
W
J
F
12:44
16:35
United Airlines
Star Alliance
UA 2832
United Airlines
Airbus A321neo
Y
W
J
F
12:48
16:36
Alaska
Oneworld
AS 304
Alaska
Boeing 737 MAX 9
Y
W
J
F
12:48
16:36
Alaska
Oneworld
AS 304
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:48
16:36
Alaska
Oneworld
AS 304
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:48
16:36
Alaska
Oneworld
AS 304
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
12:48
16:36
Alaska
Oneworld
AS 304
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:48
16:36
Alaska
Oneworld
AS 304
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
12:55
16:35
Southwest Airlines
WN 1384
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
13:35
17:34
Frontier Airlines
F9 3406
Frontier Airlines
Airbus A321neo
Y
W
J
F
13:55
17:45
Southwest Airlines
WN 4507
Southwest Airlines
Boeing 737 MAX 8
Y
W
J
F
13:55
17:45
Southwest Airlines
WN 2690
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
13:55
17:48
Delta
SkyTeam
DL 2543
Delta
Airbus A220-300
Y
W
J
F
13:55
17:48
Delta
SkyTeam
DL 2543
Delta
Airbus A220-300
Y
W
J
F
13:55
17:45
Southwest Airlines
WN 4507
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
14:23
18:10
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
14:23
18:10
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
14:23
18:10
Alaska
Oneworld
AS 602
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
14:23
18:10
Alaska
Oneworld
AS 602
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
14:23
18:10
Alaska
Oneworld
AS 602
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
14:34
18:25
United Airlines
Star Alliance
UA 1762
United Airlines
Airbus A321neo
Y
W
J
F
14:37
18:33
Frontier Airlines
F9 3406
Frontier Airlines
Airbus A320neo
Y
W
J
F
15:45
19:30
Southwest Airlines
WN 4697
Southwest Airlines
Boeing 737-700
Y
W
J
F
15:54
19:45
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:54
19:45
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:54
19:45
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:54
19:45
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
15:54
19:45
United Airlines
Star Alliance
UA 757
United Airlines
Boeing 737 MAX 8
Y
W
J
F
17:40
21:25
Southwest Airlines
WN 196
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
18:10
21:55
Southwest Airlines
WN 2860
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
18:10
21:54
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-900
Y
W
J
F
18:15
22:00
Southwest Airlines
WN 3485
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
18:15
21:59
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-900
Y
W
J
F
18:15
21:59
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-800
Y
W
J
F
18:15
21:59
United Airlines
Star Alliance
UA 1218
United Airlines
Boeing 737-900
Y
W
J
F
18:45
22:25
Southwest Airlines
WN 2522
Southwest Airlines
Boeing 737-800 (winglets)
Y
W
J
F
19:06
22:58
Frontier Airlines
F9 1176
Frontier Airlines
Airbus A321-100/200
Y
W
J
F
19:29
23:16
Alaska
Oneworld
AS 310
Alaska
Boeing 737 MAX 9
Y
W
J
F
19:29
23:16
Alaska
Oneworld
AS 310
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
19:29
23:16
Alaska
Oneworld
AS 310
Alaska
Boeing 737-900 (winglets)
Y
W
J
F
19:29
23:16
Alaska
Oneworld
AS 310
Alaska
Boeing 737 MAX 9
Y
W
J
F
19:29
23:16
Alaska
Oneworld
AS 310
Alaska
Boeing 737-800 (winglets)
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
20:07
23:58
Delta
SkyTeam
DL 2851
Delta
Airbus A220-300
Y
W
J
F
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