United Airlines flights from Denver (DEN) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE
Direct Flights:
Daily 19:07 Denver (DEN) 21:07 Seattle-Tacoma (SEA) United Airlines UA 360 Non-stop Boeing 737-800 (738) 3:00 Effective 2026-03-29 through 2026-04-29
Daily 19:13 Denver (DEN) 21:12 Seattle-Tacoma (SEA) United Airlines UA 360 Non-stop Boeing 737 MAX 9 (7M9) 2:59 Effective from 2026-04-30
Daily 06:00 Denver (DEN) 07:59 Seattle-Tacoma (SEA) United Airlines UA 366 Non-stop Boeing 737-800 (738) 2:59 Effective 2026-05-21 through 2026-08-17
Daily 19:14 Denver (DEN) 21:14 Seattle-Tacoma (SEA) United Airlines UA 486 Non-stop Boeing 737-800 (738) 3:00 Effective 2026-03-05 through 2026-03-28
Fri 11:40 Denver (DEN) 13:44 Seattle-Tacoma (SEA) United Airlines UA 769 Non-stop Boeing 737-800 (738) 3:04 Operates only on 2026-02-13
Wed,Thu,Sun 11:45 Denver (DEN) 13:49 Seattle-Tacoma (SEA) United Airlines UA 769 Non-stop Boeing 737-900 (739) 3:04 Effective 2026-02-12 through 2026-02-19
Sat 11:45 Denver (DEN) 13:49 Seattle-Tacoma (SEA) United Airlines UA 769 Non-stop Airbus A320 (320) 3:04 Effective 2026-02-14 through 2026-02-28
Mon 11:45 Denver (DEN) 13:49 Seattle-Tacoma (SEA) United Airlines UA 769 Non-stop Boeing 737 MAX 9 (7M9) 3:04 Operates only on 2026-02-16
Mon,Tue 11:45 Denver (DEN) 13:49 Seattle-Tacoma (SEA) United Airlines UA 769 Non-stop Boeing 737-800 (738) 3:04 Effective 2026-02-17 through 2026-03-03
Wed-Fri,Sun 11:45 Denver (DEN) 13:49 Seattle-Tacoma (SEA) United Airlines UA 769 Non-stop Boeing 737-900 (739) 3:04 Effective 2026-02-20 through 2026-03-04
Daily 11:15 Denver (DEN) 13:14 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Boeing 737-800 (738) 2:59 Effective 2026-03-29 through 2026-04-29
Daily 11:21 Denver (DEN) 13:20 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Boeing 737-800 (738) 2:59 Effective from 2026-04-30
Mon,Tue,Thu-Sun 11:42 Denver (DEN) 13:46 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Boeing 737-800 (738) 3:04 Effective 2026-03-05 through 2026-03-17
Wed 11:42 Denver (DEN) 13:46 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Airbus A319 (319) 3:04 Operates only on 2026-03-11
Daily 11:42 Denver (DEN) 13:46 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Boeing 737-800 (738) 3:04 Effective 2026-03-18 through 2026-03-28
Mon-Thu 11:50 Denver (DEN) 13:58 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Airbus A320 (320) 3:08 Valid until 2026-01-05
Fri-Sun 11:50 Denver (DEN) 13:58 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Airbus A319 (319) 3:08 Valid until 2026-01-04
Mon-Fri,Sun 11:50 Denver (DEN) 13:57 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Boeing 737-900 (739) 3:07 Effective 2026-01-06 through 2026-02-11
Sat 11:50 Denver (DEN) 13:58 Seattle-Tacoma (SEA) United Airlines UA 1424 Non-stop Airbus A321neo (32Q) 3:08 Effective 2026-01-10 through 2026-02-07
Mon-Wed,Sat 19:10 Denver (DEN) 21:17 Seattle-Tacoma (SEA) United Airlines UA 1729 Non-stop Airbus A320 (320) 3:07 Valid until 2026-01-03
Thu,Fri 19:10 Denver (DEN) 21:17 Seattle-Tacoma (SEA) United Airlines UA 1729 Non-stop Airbus A319 (319) 3:07 Valid until 2026-01-02
Mon,Sun 19:10 Denver (DEN) 21:17 Seattle-Tacoma (SEA) United Airlines UA 1729 Non-stop Boeing 737-800 (738) 3:07 Effective 2026-01-04 through 2026-01-05
Daily 19:08 Denver (DEN) 21:15 Seattle-Tacoma (SEA) United Airlines UA 1865 Non-stop Boeing 737 MAX 9 (7M9) 3:07 Effective 2026-01-06 through 2026-02-02
Tue 19:08 Denver (DEN) 21:15 Seattle-Tacoma (SEA) United Airlines UA 1865 Non-stop Boeing 737-800 (738) 3:07 Operates only on 2026-02-03
Mon-Fri,Sun 19:08 Denver (DEN) 21:15 Seattle-Tacoma (SEA) United Airlines UA 1865 Non-stop Boeing 737 MAX 9 (7M9) 3:07 Effective 2026-02-04 through 2026-02-11
Daily 19:08 Denver (DEN) 21:12 Seattle-Tacoma (SEA) United Airlines UA 1865 Non-stop Boeing 737-800 (738) 3:04 Effective 2026-02-12 through 2026-03-04
Sat 19:18 Denver (DEN) 21:25 Seattle-Tacoma (SEA) United Airlines UA 1865 Non-stop Boeing 737-900 (739) 3:07 Operates only on 2026-02-07
Daily 15:56 Denver (DEN) 17:57 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Airbus A320 (320) 3:01 Effective 2026-03-29 through 2026-04-29
Daily 16:00 Denver (DEN) 18:06 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Airbus A320 (320) 3:06 Valid until 2026-01-05
Mon,Wed-Sun 16:02 Denver (DEN) 18:03 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Boeing 737 MAX 9 (7M9) 3:01 Effective 2026-02-12 through 2026-02-22
Mon,Tue 16:02 Denver (DEN) 18:03 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Boeing 737-800 (738) 3:01 Effective 2026-02-17 through 2026-03-03
Wed-Sun 16:02 Denver (DEN) 18:03 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Boeing 737 MAX 9 (7M9) 3:01 Effective 2026-02-25 through 2026-03-04
Mon-Thu,Sun 16:04 Denver (DEN) 18:04 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Boeing 737 MAX 9 (7M9) 3:00 Effective 2026-03-05 through 2026-03-26
Fri 16:04 Denver (DEN) 18:04 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Airbus A320 (320) 3:00 Effective 2026-03-06 through 2026-03-27
Sat 16:04 Denver (DEN) 18:04 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Airbus A319 (319) 3:00 Effective 2026-03-07 through 2026-03-28
Daily 16:09 Denver (DEN) 18:09 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Airbus A320 (320) 3:00 Effective from 2026-04-30
Daily 16:20 Denver (DEN) 18:26 Seattle-Tacoma (SEA) United Airlines UA 2013 Non-stop Airbus A320 (320) 3:06 Effective 2026-01-06 through 2026-02-11
Daily 13:55 Denver (DEN) 15:54 Seattle-Tacoma (SEA) United Airlines UA 2164 Non-stop Boeing 737-800 (738) 2:59 Effective 2026-05-21 through 2026-10-24
Thu 07:45 Denver (DEN) 09:55 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-800 (738) 3:10 Valid until 2026-01-01
Mon-Wed,Fri-Sun 07:45 Denver (DEN) 09:56 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Airbus A320 (320) 3:11 Valid until 2026-01-04
Mon 07:45 Denver (DEN) 09:56 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Airbus A319 (319) 3:11 Operates only on 2026-01-05
Tue 07:45 Denver (DEN) 09:54 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-900 (739) 3:09 Operates only on 2026-01-06
Daily 07:45 Denver (DEN) 09:55 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-800 (738) 3:10 Effective 2026-01-07 through 2026-02-03
Daily 07:45 Denver (DEN) 09:55 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-800 (738) 3:10 Effective 2026-02-05 through 2026-02-11
Daily 07:45 Denver (DEN) 09:49 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737 MAX 9 (7M9) 3:04 Effective 2026-02-12 through 2026-03-04
Daily 07:45 Denver (DEN) 09:49 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-900 (739) 3:04 Effective 2026-03-05 through 2026-03-28
Daily 07:45 Denver (DEN) 09:45 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-800 (738) 3:00 Effective 2026-03-29 through 2026-04-29
Daily 08:00 Denver (DEN) 09:59 Seattle-Tacoma (SEA) United Airlines UA 2271 Non-stop Boeing 737-800 (738) 2:59 Effective from 2026-04-30
Fri 20:30 Denver (DEN) 22:37 Seattle-Tacoma (SEA) United Airlines UA 2651 Non-stop Boeing 737-800 (738) 3:07 Valid until 2026-01-02
Mon,Wed-Fri,Sun 20:54 Denver (DEN) 22:59 Seattle-Tacoma (SEA) United Airlines UA 2651 Non-stop Boeing 737 MAX 9 (7M9) 3:05 Effective 2026-02-12 through 2026-02-22

1 2

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 2:59 and 3:11.

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United Airlines flights from Denver (DEN) to Seattle-Tacoma (SEA).

FLIGHT SCHEDULE

Direct Flights:

United Airlines UA360

19:07

Denver (DEN)

21:07

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA360

19:13

Denver (DEN)

21:12

Seattle-Tacoma (SEA)

Effective from 2026-04-30

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:59, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA366

06:00

Denver (DEN)

07:59

Seattle-Tacoma (SEA)

Effective 2026-05-21 through 2026-08-17

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:59, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA486

19:14

Denver (DEN)

21:14

Seattle-Tacoma (SEA)

Effective 2026-03-05 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA769

11:40

Denver (DEN)

13:44

Seattle-Tacoma (SEA)

Operates only on 2026-02-13

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

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

Direct Flights:

United Airlines UA769

11:45

Denver (DEN)

13:49

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-02-19

Mon
-

Tue
-

Wed

Thu

Fri
-

Sat
-

Sun

Duration: 3:04, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA769

11:45

Denver (DEN)

13:49

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:04, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA769

11:45

Denver (DEN)

13:49

Seattle-Tacoma (SEA)

Operates only on 2026-02-16

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:04, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA769

11:45

Denver (DEN)

13:49

Seattle-Tacoma (SEA)

Effective 2026-02-17 through 2026-03-03

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

United Airlines UA769

11:45

Denver (DEN)

13:49

Seattle-Tacoma (SEA)

Effective 2026-02-20 through 2026-03-04

Mon
-

Tue
-

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:04, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA1424

11:15

Denver (DEN)

13:14

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:59, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA1424

11:21

Denver (DEN)

13:20

Seattle-Tacoma (SEA)

Effective from 2026-04-30

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:59, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA1424

11:42

Denver (DEN)

13:46

Seattle-Tacoma (SEA)

Effective 2026-03-05 through 2026-03-17

Mon

Tue

Wed
-

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA1424

11:42

Denver (DEN)

13:46

Seattle-Tacoma (SEA)

Operates only on 2026-03-11

Mon
-

Tue
-

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:04, non-stop
Airbus A319 (319)

Direct Flights:

United Airlines UA1424

11:42

Denver (DEN)

13:46

Seattle-Tacoma (SEA)

Effective 2026-03-18 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA1424

11:50

Denver (DEN)

13:58

Seattle-Tacoma (SEA)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:08, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA1424

11:50

Denver (DEN)

13:58

Seattle-Tacoma (SEA)

Valid until 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat

Sun

Duration: 3:08, non-stop
Airbus A319 (319)

Direct Flights:

United Airlines UA1424

11:50

Denver (DEN)

13:57

Seattle-Tacoma (SEA)

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

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

Direct Flights:

United Airlines UA1424

11:50

Denver (DEN)

13:58

Seattle-Tacoma (SEA)

Effective 2026-01-10 through 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:08, non-stop
Airbus A321neo (32Q)

Direct Flights:

United Airlines UA1729

19:10

Denver (DEN)

21:17

Seattle-Tacoma (SEA)

Valid until 2026-01-03

Mon

Tue

Wed

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

United Airlines UA1729

19:10

Denver (DEN)

21:17

Seattle-Tacoma (SEA)

Valid until 2026-01-02

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:07, non-stop
Airbus A319 (319)

Direct Flights:

United Airlines UA1729

19:10

Denver (DEN)

21:17

Seattle-Tacoma (SEA)

Effective 2026-01-04 through 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

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

Direct Flights:

United Airlines UA1865

19:08

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA1865

19:08

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

Operates only on 2026-02-03

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

United Airlines UA1865

19:08

Denver (DEN)

21:15

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun

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

Direct Flights:

United Airlines UA1865

19:08

Denver (DEN)

21:12

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA1865

19:18

Denver (DEN)

21:25

Seattle-Tacoma (SEA)

Operates only on 2026-02-07

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

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

Direct Flights:

United Airlines UA2013

15:56

Denver (DEN)

17:57

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:01, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA2013

16:00

Denver (DEN)

18:06

Seattle-Tacoma (SEA)

Valid until 2026-01-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:06, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA2013

16:02

Denver (DEN)

18:03

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed

Thu

Fri

Sat

Sun

Duration: 3:01, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA2013

16:02

Denver (DEN)

18:03

Seattle-Tacoma (SEA)

Effective 2026-02-17 through 2026-03-03

Mon

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:01, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA2013

16:02

Denver (DEN)

18:03

Seattle-Tacoma (SEA)

Effective 2026-02-25 through 2026-03-04

Mon
-

Tue
-

Wed

Thu

Fri

Sat

Sun

Duration: 3:01, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA2013

16:04

Denver (DEN)

18:04

Seattle-Tacoma (SEA)

Effective 2026-03-05 through 2026-03-26

Mon

Tue

Wed

Thu

Fri
-

Sat
-

Sun

Duration: 3:00, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA2013

16:04

Denver (DEN)

18:04

Seattle-Tacoma (SEA)

Effective 2026-03-06 through 2026-03-27

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA2013

16:04

Denver (DEN)

18:04

Seattle-Tacoma (SEA)

Effective 2026-03-07 through 2026-03-28

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:00, non-stop
Airbus A319 (319)

Direct Flights:

United Airlines UA2013

16:09

Denver (DEN)

18:09

Seattle-Tacoma (SEA)

Effective from 2026-04-30

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:00, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA2013

16:20

Denver (DEN)

18:26

Seattle-Tacoma (SEA)

Effective 2026-01-06 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:06, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA2164

13:55

Denver (DEN)

15:54

Seattle-Tacoma (SEA)

Effective 2026-05-21 through 2026-10-24

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:59, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:55

Seattle-Tacoma (SEA)

Valid until 2026-01-01

Mon
-

Tue
-

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:56

Seattle-Tacoma (SEA)

Valid until 2026-01-04

Mon

Tue

Wed

Thu
-

Fri

Sat

Sun

Duration: 3:11, non-stop
Airbus A320 (320)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:56

Seattle-Tacoma (SEA)

Operates only on 2026-01-05

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:11, non-stop
Airbus A319 (319)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:54

Seattle-Tacoma (SEA)

Operates only on 2026-01-06

Mon
-

Tue

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:09, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:55

Seattle-Tacoma (SEA)

Effective 2026-01-07 through 2026-02-03

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:10, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:55

Seattle-Tacoma (SEA)

Effective 2026-02-05 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:10, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:49

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-03-04

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:04, non-stop
Boeing 737 MAX 9 (7M9)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:49

Seattle-Tacoma (SEA)

Effective 2026-03-05 through 2026-03-28

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:04, non-stop
Boeing 737-900 (739)

Direct Flights:

United Airlines UA2271

07:45

Denver (DEN)

09:45

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed

Thu

Fri

Sat

Sun

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

Direct Flights:

United Airlines UA2271

08:00

Denver (DEN)

09:59

Seattle-Tacoma (SEA)

Effective from 2026-04-30

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 2:59, non-stop
Boeing 737-800 (738)

Direct Flights:

United Airlines UA2651

20:30

Denver (DEN)

22:37

Seattle-Tacoma (SEA)

Valid until 2026-01-02

Mon
-

Tue
-

Wed
-

Thu
-

Fri

Sat
-

Sun
-

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

Direct Flights:

United Airlines UA2651

20:54

Denver (DEN)

22:59

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed

Thu

Fri

Sat
-

Sun

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

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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 2:59 and 3:11.

All DEN-SEA flights

All United Airlines flights

Return (SEA-DEN) flights

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