All airlines flying from Denver (DEN) to Seattle-Tacoma (SEA).

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FLIGHT SCHEDULE
Direct Flights:
Mon 08:05 Denver (DEN) 10:20 Seattle-Tacoma (SEA) Southwest Airlines WN 4746 Non-stop Boeing 737-800 (73H) 3:15 Operates only on 2026-02-16
Thu,Fri,Sun 08:05 Denver (DEN) 10:20 Seattle-Tacoma (SEA) Southwest Airlines WN 4746 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-20 through 2026-03-01
Sun 06:30 Denver (DEN) 08:25 Seattle-Tacoma (SEA) Southwest Airlines WN 4800 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-08-09 through 2026-09-27
Tue,Wed 21:05 Denver (DEN) 23:05 Seattle-Tacoma (SEA) Southwest Airlines WN 4800 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-08-04 through 2026-09-30
Sun 08:45 Denver (DEN) 10:40 Seattle-Tacoma (SEA) Southwest Airlines WN 4870 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-09 through 2026-09-27
Sat 09:05 Denver (DEN) 11:00 Seattle-Tacoma (SEA) Southwest Airlines WN 4870 Non-stop Boeing 737-700 (Scimitar Winglets) 2:55 Effective 2026-08-08 through 2026-09-26
Mon,Thu,Fri 09:15 Denver (DEN) 11:10 Seattle-Tacoma (SEA) Southwest Airlines WN 4870 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-06 through 2026-09-28
Tue,Wed 16:15 Denver (DEN) 18:10 Seattle-Tacoma (SEA) Southwest Airlines WN 4980 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-04 through 2026-09-30
Sat 16:20 Denver (DEN) 18:15 Seattle-Tacoma (SEA) Southwest Airlines WN 4980 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-08 through 2026-09-26
Sun 16:45 Denver (DEN) 18:40 Seattle-Tacoma (SEA) Southwest Airlines WN 4980 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri 20:55 Denver (DEN) 22:55 Seattle-Tacoma (SEA) Southwest Airlines WN 4980 Non-stop Boeing 737-700 (Scimitar Winglets) 3:00 Effective 2026-08-06 through 2026-09-28
Non-Direct Flights:
Mon,Wed-Fri,Sun 17:47 Denver (DEN) 23:28 Seattle-Tacoma (SEA) United Airlines UA 1007 1-stop Boeing 757-200 (752) 6:41 Effective 2026-03-05 through 2026-03-27
Daily 17:52 Denver (DEN) 23:36 Seattle-Tacoma (SEA) United Airlines UA 1007 1-stop Airbus A321neo (32Q) 6:44 Effective 2026-03-29 through 2026-04-29
Daily 17:52 Denver (DEN) 23:29 Seattle-Tacoma (SEA) United Airlines UA 1007 1-stop Airbus A321neo (32Q) 6:37 Effective 2026-04-30 through 2026-05-20
Daily 17:52 Denver (DEN) 23:21 Seattle-Tacoma (SEA) United Airlines UA 1007 1-stop Airbus A321neo (32Q) 6:29 Effective 2026-05-21 through 2026-08-10
Daily 17:52 Denver (DEN) 23:28 Seattle-Tacoma (SEA) United Airlines UA 1007 1-stop Airbus A321neo (32Q) 6:36 Effective 2026-08-11 through 2026-10-24
Daily 17:52 Denver (DEN) 23:21 Seattle-Tacoma (SEA) United Airlines UA 1007 1-stop Airbus A321neo (32Q) 6:29 Effective from 2026-10-25
Mon,Thu,Fri 09:00 Denver (DEN) 12:55 Seattle-Tacoma (SEA) Southwest Airlines WN 1739 1-stop Boeing 737-700 (Scimitar Winglets) 4:55 Effective 2026-06-04 through 2026-08-03
Tue,Wed 18:55 Denver (DEN) 23:10 Seattle-Tacoma (SEA) Southwest Airlines WN 1843 1-stop Boeing 737-800 (73H) 5:15 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 07:45 Denver (DEN) 20:56 Seattle-Tacoma (SEA) United Airlines UA 326 2-stop Boeing 737-800 (738) 14:11 Effective 2026-02-12 through 2026-03-02
Sat 07:45 Denver (DEN) 20:56 Seattle-Tacoma (SEA) United Airlines UA 326 2-stop Boeing 737 MAX 8 (7M8) 14:11 Effective 2026-02-14 through 2026-02-28
Sun 07:45 Denver (DEN) 20:56 Seattle-Tacoma (SEA) United Airlines UA 326 2-stop Boeing 737 MAX 8 (7M8) 14:11 Effective 2026-02-15 through 2026-03-01
Mon,Thu,Fri 13:35 Denver (DEN) 20:25 Seattle-Tacoma (SEA) Southwest Airlines WN 1219 2-stop Boeing 737-700 (Scimitar Winglets) 7:50 Effective 2026-04-09 through 2026-06-01
Mon,Thu,Fri 07:55 Denver (DEN) 14:25 Seattle-Tacoma (SEA) Southwest Airlines WN 1785 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-02-12 through 2026-02-16
Thu,Fri,Sun 07:55 Denver (DEN) 14:25 Seattle-Tacoma (SEA) Southwest Airlines WN 1785 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-02-20 through 2026-03-01
Tue,Wed 14:50 Denver (DEN) 21:00 Seattle-Tacoma (SEA) Southwest Airlines WN 1914 2-stop Boeing 737-700 (Scimitar Winglets) 7:10 Effective 2026-04-07 through 2026-06-03
Thu,Fri,Sun 11:10 Denver (DEN) 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1983 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-01-11 through 2026-01-16
Mon,Sun 11:10 Denver (DEN) 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1983 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 11:10 Denver (DEN) 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1983 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-02-01 through 2026-02-06
Mon,Sun 11:10 Denver (DEN) 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1983 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-02-09 through 2026-02-15
Mon,Tue,Thu 11:10 Denver (DEN) 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1983 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Effective 2026-02-17 through 2026-02-23
Mon 11:10 Denver (DEN) 17:40 Seattle-Tacoma (SEA) Southwest Airlines WN 1983 2-stop Boeing 737-700 (Scimitar Winglets) 7:30 Operates only on 2026-03-02
Mon,Thu,Fri 11:50 Denver (DEN) 21:15 Seattle-Tacoma (SEA) Southwest Airlines WN 1571 3-stop Boeing 737-700 (Scimitar Winglets) 10:25 Effective 2026-03-05 through 2026-04-06
Direct Codeshare Flights:
Daily 19:08 Denver (DEN) 21:15 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737 MAX 9 (7M9) 3:07 Effective 2026-01-06 through 2026-02-02 Codeshare flight, operated by United Airlines.(UA 1865)
Tue 19:08 Denver (DEN) 21:15 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:07 Operates only on 2026-02-03 Codeshare flight, operated by United Airlines.(UA 1865)
Mon-Fri,Sun 19:08 Denver (DEN) 21:15 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737 MAX 9 (7M9) 3:07 Effective 2026-02-04 through 2026-02-11 Codeshare flight, operated by United Airlines.(UA 1865)
Tue,Sat 19:08 Denver (DEN) 21:12 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:04 Effective 2026-02-14 through 2026-02-21 Codeshare flight, operated by United Airlines.(UA 1865)
Mon,Tue,Sat 19:08 Denver (DEN) 21:12 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:04 Effective 2026-02-23 through 2026-03-03 Codeshare flight, operated by United Airlines.(UA 1865)
Sat 19:14 Denver (DEN) 21:14 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:00 Operates only on 2026-03-07 Codeshare flight, operated by United Airlines.(UA 486)
Sat 19:18 Denver (DEN) 21:25 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-900 (739) 3:07 Operates only on 2026-02-07 Codeshare flight, operated by United Airlines.(UA 1865)
Fri 20:30 Denver (DEN) 22:37 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:07 Valid until 2026-01-02 Codeshare flight, operated by United Airlines.(UA 2651)
Mon,Wed-Fri,Sun 20:54 Denver (DEN) 22:59 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737 MAX 9 (7M9) 3:05 Effective 2026-02-12 through 2026-02-22 Codeshare flight, operated by United Airlines.(UA 2651)
Wed-Fri,Sun 20:54 Denver (DEN) 22:59 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737 MAX 9 (7M9) 3:05 Effective 2026-02-25 through 2026-03-27 Codeshare flight, operated by United Airlines.(UA 2651)
Daily 20:54 Denver (DEN) 22:54 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:00 Effective 2026-03-29 through 2026-04-13 Codeshare flight, operated by United Airlines.(UA 2651)
Mon,Wed-Sun 20:54 Denver (DEN) 22:54 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737-800 (738) 3:00 Effective 2026-04-15 through 2026-04-29 Codeshare flight, operated by United Airlines.(UA 2651)
Mon,Wed-Sun 21:00 Denver (DEN) 22:59 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737 MAX 8 (7M8) 2:59 Effective from 2026-04-30 Codeshare flight, operated by United Airlines.(UA 2651)
Mon,Tue,Thu,Sat,Sun 21:05 Denver (DEN) 23:12 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Boeing 737 MAX 8 (7M8) 3:07 Valid until 2026-01-04 Codeshare flight, operated by United Airlines.(UA 2651)
Mon 21:05 Denver (DEN) 23:12 Seattle-Tacoma (SEA) Copa Airlines CM 1141 Non-stop Airbus A320 (320) 3:07 Operates only on 2026-01-05 Codeshare flight, operated by United Airlines.(UA 2651)
Wed 12:15 Denver (DEN) 14:28 Seattle-Tacoma (SEA) Qatar Airways QR 2005 Non-stop Boeing 737 MAX 9 (7M9) 3:13 Operates only on 2026-01-07 Codeshare flight, operated by Alaska Airlines.(AS 1350)
Sat 20:22 Denver (DEN) 22:30 Seattle-Tacoma (SEA) Qatar Airways QR 2016 Non-stop Boeing 737 (73J) 3:08 Valid until 2026-01-03 Codeshare flight, operated by Alaska Airlines.(AS 615)

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Parallax here DEN-SEA

1 2 3 4 5 6 7 8 9 10 ... 15 16 17

A domestic route departing from the Denver airport (DEN) and arriving at Seattle-Tacoma airport (SEA).
The flight distance is 1022 miles, or 1644 km.
The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-8 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 2:50 and 3:20.

Return (SEA-DEN) flights

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All airlines flying from Denver (DEN) to Seattle-Tacoma (SEA).

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FLIGHT SCHEDULE

Direct Flights:

Southwest Airlines WN4746

08:05

Denver (DEN)

10:20

Seattle-Tacoma (SEA)

Operates only on 2026-02-16

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4746

08:05

Denver (DEN)

10:20

Seattle-Tacoma (SEA)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4800

06:30

Denver (DEN)

08:25

Seattle-Tacoma (SEA)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4800

21:05

Denver (DEN)

23:05

Seattle-Tacoma (SEA)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4870

08:45

Denver (DEN)

10:40

Seattle-Tacoma (SEA)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4870

09:05

Denver (DEN)

11:00

Seattle-Tacoma (SEA)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:55, non-stop
Boeing 737-700 (Scimitar Winglets)

Direct Flights:

Southwest Airlines WN4870

09:15

Denver (DEN)

11:10

Seattle-Tacoma (SEA)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4980

16:15

Denver (DEN)

18:10

Seattle-Tacoma (SEA)

Effective 2026-08-04 through 2026-09-30

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4980

16:20

Denver (DEN)

18:15

Seattle-Tacoma (SEA)

Effective 2026-08-08 through 2026-09-26

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 2:55, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN4980

16:45

Denver (DEN)

18:40

Seattle-Tacoma (SEA)

Effective 2026-08-09 through 2026-09-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 2:55, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN4980

20:55

Denver (DEN)

22:55

Seattle-Tacoma (SEA)

Effective 2026-08-06 through 2026-09-28

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

United Airlines UA1007

17:47

Denver (DEN)

23:28

Seattle-Tacoma (SEA)

Effective 2026-03-05 through 2026-03-27

Mon

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Duration: 6:41, 1-stop
Boeing 757-200 (752)

Non-Direct Flights:

United Airlines UA1007

17:52

Denver (DEN)

23:36

Seattle-Tacoma (SEA)

Effective 2026-03-29 through 2026-04-29

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 6:44, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA1007

17:52

Denver (DEN)

23:29

Seattle-Tacoma (SEA)

Effective 2026-04-30 through 2026-05-20

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 6:37, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA1007

17:52

Denver (DEN)

23:21

Seattle-Tacoma (SEA)

Effective 2026-05-21 through 2026-08-10

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 6:29, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA1007

17:52

Denver (DEN)

23:28

Seattle-Tacoma (SEA)

Effective 2026-08-11 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 6:36, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

United Airlines UA1007

17:52

Denver (DEN)

23:21

Seattle-Tacoma (SEA)

Effective from 2026-10-25

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 6:29, 1-stop
Airbus A321neo (32Q)

Non-Direct Flights:

Southwest Airlines WN1739

09:00

Denver (DEN)

12:55

Seattle-Tacoma (SEA)

Effective 2026-06-04 through 2026-08-03

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 4:55, 1-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1843

18:55

Denver (DEN)

23:10

Seattle-Tacoma (SEA)

Effective 2026-06-09 through 2026-07-29

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 5:15, 1-stop
Boeing 737-800 (73H)

Non-Direct Flights:

United Airlines UA326

07:45

Denver (DEN)

20:56

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-03-02

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 14:11, 2-stop
Boeing 737-800 (738)

Non-Direct Flights:

United Airlines UA326

07:45

Denver (DEN)

20:56

Seattle-Tacoma (SEA)

Effective 2026-02-14 through 2026-02-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 14:11, 2-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

United Airlines UA326

07:45

Denver (DEN)

20:56

Seattle-Tacoma (SEA)

Effective 2026-02-15 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 14:11, 2-stop
Boeing 737 MAX 8 (7M8)

Non-Direct Flights:

Southwest Airlines WN1219

13:35

Denver (DEN)

20:25

Seattle-Tacoma (SEA)

Effective 2026-04-09 through 2026-06-01

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 7:50, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1785

07:55

Denver (DEN)

14:25

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-02-16

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1785

07:55

Denver (DEN)

14:25

Seattle-Tacoma (SEA)

Effective 2026-02-20 through 2026-03-01

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1914

14:50

Denver (DEN)

21:00

Seattle-Tacoma (SEA)

Effective 2026-04-07 through 2026-06-03

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:10, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1983

11:10

Denver (DEN)

17:40

Seattle-Tacoma (SEA)

Effective 2026-01-11 through 2026-01-16

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1983

11:10

Denver (DEN)

17:40

Seattle-Tacoma (SEA)

Effective 2026-01-19 through 2026-01-25

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1983

11:10

Denver (DEN)

17:40

Seattle-Tacoma (SEA)

Effective 2026-02-01 through 2026-02-06

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1983

11:10

Denver (DEN)

17:40

Seattle-Tacoma (SEA)

Effective 2026-02-09 through 2026-02-15

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1983

11:10

Denver (DEN)

17:40

Seattle-Tacoma (SEA)

Effective 2026-02-17 through 2026-02-23

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1983

11:10

Denver (DEN)

17:40

Seattle-Tacoma (SEA)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 7:30, 2-stop
Boeing 737-700 (Scimitar Winglets)

Non-Direct Flights:

Southwest Airlines WN1571

11:50

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

Effective 2026-03-05 through 2026-04-06

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 10:25, 3-stop
Boeing 737-700 (Scimitar Winglets)

Direct Codeshare Flights:

Copa Airlines CM1141

19:08

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

Effective 2026-01-06 through 2026-02-02

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 1865)

Duration: 3:07, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Copa Airlines CM1141

19:08

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

Operates only on 2026-02-03

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by United Airlines. (UA 1865)

Duration: 3:07, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

19:08

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

Effective 2026-02-04 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 1865)

Duration: 3:07, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Copa Airlines CM1141

19:08

Denver (DEN)

21:12

Seattle-Tacoma (SEA)

Effective 2026-02-14 through 2026-02-21

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 1865)

Duration: 3:04, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

19:08

Denver (DEN)

21:12

Seattle-Tacoma (SEA)

Effective 2026-02-23 through 2026-03-03

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 1865)

Duration: 3:04, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

19:14

Denver (DEN)

21:14

Seattle-Tacoma (SEA)

Operates only on 2026-03-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 486)

Duration: 3:00, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

19:18

Denver (DEN)

21:25

Seattle-Tacoma (SEA)

Operates only on 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by United Airlines. (UA 1865)

Duration: 3:07, non-stop
Boeing 737-900 (739)

Direct Codeshare Flights:

Copa Airlines CM1141

20:30

Denver (DEN)

22:37

Seattle-Tacoma (SEA)

Valid until 2026-01-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:07, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

20:54

Denver (DEN)

22:59

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-02-22

Mon

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:05, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Copa Airlines CM1141

20:54

Denver (DEN)

22:59

Seattle-Tacoma (SEA)

Effective 2026-02-25 through 2026-03-27

Mon
-

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:05, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Copa Airlines CM1141

20:54

Denver (DEN)

22:54

Seattle-Tacoma (SEA)

Effective 2026-03-29 through 2026-04-13

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:00, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

20:54

Denver (DEN)

22:54

Seattle-Tacoma (SEA)

Effective 2026-04-15 through 2026-04-29

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:00, non-stop
Boeing 737-800 (738)

Direct Codeshare Flights:

Copa Airlines CM1141

21:00

Denver (DEN)

22:59

Seattle-Tacoma (SEA)

Effective from 2026-04-30

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 2:59, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Copa Airlines CM1141

21:05

Denver (DEN)

23:12

Seattle-Tacoma (SEA)

Valid until 2026-01-04

Mon

Tue

Wed
-

Thu

Fri
-

Sat

Sun

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:07, non-stop
Boeing 737 MAX 8 (7M8)

Direct Codeshare Flights:

Copa Airlines CM1141

21:05

Denver (DEN)

23:12

Seattle-Tacoma (SEA)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by United Airlines. (UA 2651)

Duration: 3:07, non-stop
Airbus A320 (320)

Direct Codeshare Flights:

Qatar Airways QR2005

12:15

Denver (DEN)

14:28

Seattle-Tacoma (SEA)

Operates only on 2026-01-07

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 1350)

Duration: 3:13, non-stop
Boeing 737 MAX 9 (7M9)

Direct Codeshare Flights:

Qatar Airways QR2016

20:22

Denver (DEN)

22:30

Seattle-Tacoma (SEA)

Valid until 2026-01-03

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Codeshare flight, operated by Alaska Airlines. (AS 615)

Duration: 3:08, non-stop
Boeing 737 (73J)

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A domestic route departing from the Denver airport (DEN) and arriving at Seattle-Tacoma airport (SEA).
The flight distance is 1022 miles, or 1644 km.
The timezone of the departure airport is UTC-7 , and the timezone of the arrival airport is UTC-8 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
For direct flights, the flight time varies between 2:50 and 3:20.

Return (SEA-DEN) flights

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