Airlines with flights from Seattle to Denver
There are five airlines with scheduled flights between SEA and DEN. United, Southwest and 3 more carriers has non-stop flights from Seattle Airport to Denver International and the flight time is 2 hours and 45 minutes.
Choose airline
Schedules

Non-stop with United Airlines
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Total flight time: 2 hours and 45 minutes
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Denver is a United Airlines hub.
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33 flights per week
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Boeing 737-800 PassengerAirbus A319Boeing 737MAX 8 PassengerA321neoBoeing 737-900 PassengerAirbus A320
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First class available
SEA
Direct
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
UA2269
05:02
05:02
05:02
05:00
05:15
05:15
05:15
UA597
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08:50
08:50
08:50
08:50
UA1829
08:50
08:50
08:50
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UA423
12:46
12:46
12:46
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UA645
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12:55
12:55
12:55
12:55
UA757
15:16
15:16
15:16
15:45
15:45
15:45
15:45
UA1218
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19:10
19:10
19:11
19:10
UA1387
19:13
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19:13
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The timetable & schedule information was updated at 2025-02-17
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Non-stop with Southwest Airlines
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Total flight time: 2 hours and 40 minutes
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Low-cost airline
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Denver is a Southwest Airlines focus city (Operating base).
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27 flights per week
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Boeing 737-800 (winglets) Passenger/BBJ2Boeing 737MAX 8 PassengerBoeing 737-700 (winglets) Passenger/BBJ1
SEA
Direct
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
WN3228
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05:00
05:00
05:00
05:00
WN743
05:05
07:30
07:30
----
----
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WN1305
----
----
----
09:40
09:40
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11:00
WN805
09:45
----
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----
----
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WN249
15:55
10:00
10:00
----
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WN489
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----
----
----
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11:25
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WN3929
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12:20
12:20
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----
----
WN947
----
----
----
----
----
16:05
----
WN449
----
----
----
----
----
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16:25
WN2396
----
----
----
17:15
17:15
----
----
The timetable & schedule information was updated at 2025-02-17

Non-stop with Alaska Airlines
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Total flight time: 2 hours and 43 minutes
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One World Alliance
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Seattle is a Alaska Airlines hub (Primary hub).
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25 flights per week
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Boeing 737-900 (winglets) Passenger/BBJ3Boeing 737MAX 9 PassengerBoeing 737-800 (winglets) Passenger/BBJ2
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Business and first class available
SEA
Direct
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
AS682
07:55
07:55
07:55
07:55
07:55
07:55
07:55
AS602
12:34
12:34
12:34
12:34
12:34
12:39
12:34
AS524
15:21
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15:21
15:21
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15:21
AS147
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17:42
17:42
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----
----
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AS321
20:10
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20:10
20:10
20:10
20:10
The timetable & schedule information was updated at 2025-02-17

Non-stop with Delta Air Lines
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Total flight time: 2 hours and 52 minutes
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Sky Team Alliance
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Seattle is a Delta Air Lines hub.
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21 flights per week
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Embraer 175 (Enhanced Winglets)Airbus 220-100Airbus A 220-300
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Business and first class available
SEA
Direct
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
DL3694
08:30
08:30
08:30
08:30
08:30
08:30
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DL2740
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----
----
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09:35
DL3679
15:15
15:15
15:15
15:15
15:15
15:15
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DL3681
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----
----
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15:20
DL2851
19:55
20:35
20:35
19:55
19:55
20:35
19:55
The timetable & schedule information was updated at 2025-02-17

Non-stop with Frontier Airlines
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Total flight time: 2 hours and 48 minutes
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Low-cost airline
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Denver is a Frontier Airlines focus city.
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6 flights per week
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Airbus A320neo
SEA
Direct
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
F93406
15:16
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13:36
14:02
14:02
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14:02
The timetable & schedule information was updated at 2025-02-17
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Via Salt Lake City with Delta Air Lines
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Total flight time: 4h 10m - 6h 38m.
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Sky Team Alliance
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Seattle is a Delta Air Lines hub.
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27 flights per week
-
Embraer 175 (Enhanced Winglets)Airbus 220-100Airbus A 220-300
SEA
Via SLC
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
DL1128
DL1553
DL1553
05:30
05:30
05:30
05:30
05:30
05:30
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DL1128
DL681
DL681
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----
----
----
----
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05:30
DL1128
DL1274
DL1274
05:30
----
----
05:30
05:30
----
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DL1016
DL1623
DL1623
09:55
09:55
09:55
09:55
09:55
09:55
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DL1120
DL1586
DL1586
13:30
13:30
13:30
13:30
13:30
13:30
13:30
DL1165
DL1667
DL1667
17:05
17:05
17:05
17:05
17:05
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17:10
The timetable & schedule information was updated at 2025-02-17

Via Las Vegas with Southwest Airlines
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Total flight time: 5h 15m - 9h 55m.
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Low-cost airline
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Denver is a Southwest Airlines focus city (Operating base).
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15 flights per week
-
Boeing 737-800 (winglets) Passenger/BBJ2Boeing 737MAX 8 PassengerBoeing 737-700 (winglets) Passenger/BBJ1
SEA
Via LAS
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
WN546
WN2903
WN2903
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05:55
WN1295
WN1599
WN1599
----
----
----
----
----
06:15
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WN1088
WN55
WN55
----
----
----
06:20
06:20
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WN1088
WN2542
WN2542
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----
----
06:20
06:20
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WN1295
WN1863
WN1863
----
----
----
06:40
06:40
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WN4527
WN3034
WN3034
06:50
----
----
----
----
----
----
WN4527
WN188
WN188
06:50
----
----
----
----
----
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WN823
WN4381
WN4381
07:15
----
----
----
----
----
----
WN1249
WN1597
WN1597
07:45
09:10
09:10
----
----
----
----
WN988
WN1100
WN1100
----
08:50
08:50
----
----
----
----
WN1249
WN4381
WN4381
----
09:10
09:10
----
----
----
----
WN1249
WN2715
WN2715
----
09:10
09:10
----
----
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WN2717
WN596
WN596
----
----
----
11:35
11:35
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WN2717
WN3624
WN3624
----
----
----
11:35
11:35
----
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WN4153
WN1189
WN1189
----
----
----
----
----
----
13:05
WN4153
WN2046
WN2046
----
----
----
----
----
----
13:05
WN3142
WN2834
WN2834
----
----
----
13:30
13:30
----
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WN4211
WN3175
WN3175
14:40
14:35
14:35
----
----
----
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WN4153
WN699
WN699
----
----
----
----
----
16:00
----
WN4153
WN851
WN851
----
----
----
----
----
16:00
----
WN4153
WN4542
WN4542
----
----
----
19:00
19:00
----
----
The timetable & schedule information was updated at 2025-02-17

Via Portland with Alaska Airlines
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Total flight time: 4h 02m - 6h 14m.
-
One World Alliance
-
Seattle is a Alaska Airlines hub (Primary hub).
-
8 flights per week
-
Boeing 737-900 (winglets) Passenger/BBJ3Boeing 737MAX 9 PassengerBoeing 737-800 (winglets) Passenger/BBJ2
SEA
Via PDX
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
AS2111
AS336
AS336
06:42
----
----
06:42
06:42
----
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AS3362
AS336
AS336
08:05
08:05
08:05
08:05
08:05
----
08:05
AS2114
AS336
AS336
----
----
----
----
----
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08:55
The timetable & schedule information was updated at 2025-02-17

Via Sacramento with Southwest Airlines
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Total flight time: 4h 50m - 9h 30m.
-
Low-cost airline
-
Denver is a Southwest Airlines focus city (Operating base).
-
6 flights per week
-
Boeing 737-800 (winglets) Passenger/BBJ2Boeing 737MAX 8 PassengerBoeing 737-700 (winglets) Passenger/BBJ1
SEA
Via SMF
DEN
W10, Mar 03 - Mar 09
Flight
Mon
Mar 3
Tue
Mar 4
Wed
Mar 5
Thu
Mar 6
Fri
Mar 7
Sat
Mar 8
Sun
Mar 9
WN546
WN2903
WN2903
----
----
----
----
----
----
05:55
WN1295
WN1599
WN1599
----
----
----
----
----
06:15
----
WN1088
WN55
WN55
----
----
----
06:20
06:20
----
----
WN1088
WN2542
WN2542
----
----
----
06:20
06:20
----
----
WN1295
WN1863
WN1863
----
----
----
06:40
06:40
----
----
WN4527
WN3034
WN3034
06:50
----
----
----
----
----
----
WN4527
WN188
WN188
06:50
----
----
----
----
----
----
WN823
WN4381
WN4381
07:15
----
----
----
----
----
----
WN1249
WN1597
WN1597
07:45
09:10
09:10
----
----
----
----
WN988
WN1100
WN1100
----
08:50
08:50
----
----
----
----
WN1249
WN4381
WN4381
----
09:10
09:10
----
----
----
----
WN1249
WN2715
WN2715
----
09:10
09:10
----
----
----
----
WN2717
WN596
WN596
----
----
----
11:35
11:35
----
----
WN2717
WN3624
WN3624
----
----
----
11:35
11:35
----
----
WN4153
WN1189
WN1189
----
----
----
----
----
----
13:05
WN4153
WN2046
WN2046
----
----
----
----
----
----
13:05
WN3142
WN2834
WN2834
----
----
----
13:30
13:30
----
----
WN4211
WN3175
WN3175
14:40
14:35
14:35
----
----
----
----
WN4153
WN699
WN699
----
----
----
----
----
16:00
----
WN4153
WN851
WN851
----
----
----
----
----
16:00
----
WN4153
WN4542
WN4542
----
----
----
19:00
19:00
----
----
The timetable & schedule information was updated at 2025-02-17