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

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FLIGHT SCHEDULE
Direct Flights:
Sat 19:00 Denver (DEN) 21:05 Seattle-Tacoma (SEA) Southwest Airlines WN 1601 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-10 through 2026-02-07
Sat 14:50 Denver (DEN) 16:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-01-10 through 2026-02-07
Mon-Fri 20:25 Denver (DEN) 22:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-06 through 2026-01-14
Tue-Fri,Sun 20:25 Denver (DEN) 22:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-18 through 2026-01-23
Mon-Fri 20:25 Denver (DEN) 22:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-26 through 2026-02-04
Tue,Wed,Sun 20:25 Denver (DEN) 22:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-08 through 2026-02-11
Tue,Wed 20:25 Denver (DEN) 22:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-18 through 2026-03-04
Thu,Fri,Sun 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-11 through 2026-01-16
Mon,Sun 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-01-19 through 2026-01-25
Thu,Fri,Sun 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-01 through 2026-02-06
Mon,Sun 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-09 through 2026-02-15
Sat 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-02-14 through 2026-02-28
Mon,Tue,Thu 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Effective 2026-02-17 through 2026-02-23
Mon 20:45 Denver (DEN) 22:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:05 Operates only on 2026-03-02
Mon,Thu,Fri 21:55 Denver (DEN) 00:10 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-12 through 2026-02-16 The flight arrives 1 day after departure.
Thu,Fri,Sun 21:55 Denver (DEN) 00:10 Seattle-Tacoma (SEA) Southwest Airlines WN 1603 Non-stop Boeing 737 MAX 8 (7M8) 3:15 Effective 2026-02-20 through 2026-03-01 The flight arrives 1 day after departure.
Wed 11:25 Denver (DEN) 13:20 Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-05 through 2026-09-30
Mon,Thu,Fri 15:35 Denver (DEN) 17:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-06 through 2026-09-28
Sat 19:35 Denver (DEN) 21:30 Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737-800 (73H) 2:55 Effective 2026-08-08 through 2026-09-26
Sun 19:50 Denver (DEN) 21:45 Seattle-Tacoma (SEA) Southwest Airlines WN 1670 Non-stop Boeing 737 MAX 8 (7M8) 2:55 Effective 2026-08-09 through 2026-09-27
Mon,Thu,Fri,Sun 07:45 Denver (DEN) 09:45 Seattle-Tacoma (SEA) Southwest Airlines WN 1713 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-06-04 through 2026-08-03
Tue,Wed 08:05 Denver (DEN) 10:05 Seattle-Tacoma (SEA) Southwest Airlines WN 1713 Non-stop Boeing 737 MAX 8 (7M8) 3:00 Effective 2026-06-09 through 2026-07-29
Sat 18:00 Denver (DEN) 20:10 Seattle-Tacoma (SEA) Southwest Airlines WN 1716 Non-stop Boeing 737-800 (73H) 3:10 Effective 2026-06-06 through 2026-08-01
Tue,Wed 18:15 Denver (DEN) 20:25 Seattle-Tacoma (SEA) Southwest Airlines WN 1716 Non-stop Boeing 737-700 (Scimitar Winglets) 3:10 Effective 2026-06-09 through 2026-07-29
Mon,Thu,Fri 19:50 Denver (DEN) 21:50 Seattle-Tacoma (SEA) Southwest Airlines WN 1716 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-06-04 through 2026-08-03
Mon,Tue,Fri-Sun 18:04 Denver (DEN) 20:14 Seattle-Tacoma (SEA) Delta Air Lines DL 1724 Non-stop Airbus A220-100 (221) 3:10 Valid until 2026-01-03
Sun 18:04 Denver (DEN) 20:17 Seattle-Tacoma (SEA) Delta Air Lines DL 1724 Non-stop Airbus A220-100 (221) 3:13 Operates only on 2026-01-04
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
Mon-Sat 06:05 Denver (DEN) 08:20 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:15 Valid until 2026-01-03
Sun 06:05 Denver (DEN) 08:20 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-100 (221) 3:15 Operates only on 2026-01-04
Daily 06:29 Denver (DEN) 08:40 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:11 Effective 2026-01-05 through 2026-02-11
Daily 06:30 Denver (DEN) 08:36 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:06 Effective 2026-03-08 through 2026-03-14
Daily 06:30 Denver (DEN) 08:38 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:08 Effective 2026-03-15 through 2026-04-12
Daily 06:40 Denver (DEN) 08:51 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:11 Effective 2026-02-12 through 2026-03-07
Daily 06:45 Denver (DEN) 08:53 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:08 Effective 2026-04-13 through 2026-10-05
Daily 06:45 Denver (DEN) 08:59 Seattle-Tacoma (SEA) Delta Air Lines DL 1731 Non-stop Airbus A220-300 (223) 3:14 Effective from 2026-10-06
Tue,Wed 08:35 Denver (DEN) 10:35 Seattle-Tacoma (SEA) Southwest Airlines WN 1738 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-03-10 through 2026-04-01
Sat 08:00 Denver (DEN) 10:05 Seattle-Tacoma (SEA) Southwest Airlines WN 1780 Non-stop Boeing 737-800 (73H) 3:05 Effective 2026-06-06 through 2026-08-01
Mon,Thu,Fri 17:05 Denver (DEN) 19:05 Seattle-Tacoma (SEA) Southwest Airlines WN 1801 Non-stop Boeing 737-800 (73H) 3:00 Effective 2026-04-09 through 2026-06-01
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

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Parallax here DEN-SEA

1 2 3 4 5 6 7 ... 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 WN1601

19:00

Denver (DEN)

21:05

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

14:50

Denver (DEN)

16:50

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1603

20:25

Denver (DEN)

22:30

Seattle-Tacoma (SEA)

Effective 2026-01-06 through 2026-01-14

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:25

Denver (DEN)

22:30

Seattle-Tacoma (SEA)

Effective 2026-01-18 through 2026-01-23

Mon
-

Tue

Wed

Thu

Fri

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:25

Denver (DEN)

22:30

Seattle-Tacoma (SEA)

Effective 2026-01-26 through 2026-02-04

Mon

Tue

Wed

Thu

Fri

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:25

Denver (DEN)

22:30

Seattle-Tacoma (SEA)

Effective 2026-02-08 through 2026-02-11

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:25

Denver (DEN)

22:30

Seattle-Tacoma (SEA)

Effective 2026-02-18 through 2026-03-04

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

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

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

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

Mon

Tue

Wed
-

Thu

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

20:45

Denver (DEN)

22:50

Seattle-Tacoma (SEA)

Operates only on 2026-03-02

Mon

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:05, non-stop
Boeing 737 MAX 8 (7M8)

Direct Flights:

Southwest Airlines WN1603

21:55

Denver (DEN)

00:10(+1)

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:15, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN1603

21:55

Denver (DEN)

00:10(+1)

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)
The flight arrives 1 day after departure.

Direct Flights:

Southwest Airlines WN1670

11:25

Denver (DEN)

13:20

Seattle-Tacoma (SEA)

Effective 2026-08-05 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 WN1670

15:35

Denver (DEN)

17:30

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN1670

19:35

Denver (DEN)

21:30

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 WN1670

19:50

Denver (DEN)

21:45

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 WN1713

07:45

Denver (DEN)

09:45

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun

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

Direct Flights:

Southwest Airlines WN1713

08:05

Denver (DEN)

10:05

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN1716

18:00

Denver (DEN)

20:10

Seattle-Tacoma (SEA)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:10, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1716

18:15

Denver (DEN)

20:25

Seattle-Tacoma (SEA)

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

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

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

Direct Flights:

Southwest Airlines WN1716

19:50

Denver (DEN)

21:50

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Delta Air Lines DL1724

18:04

Denver (DEN)

20:14

Seattle-Tacoma (SEA)

Valid until 2026-01-03

Mon

Tue

Wed
-

Thu
-

Fri

Sat

Sun

Duration: 3:10, non-stop
Airbus A220-100 (221)

Direct Flights:

Delta Air Lines DL1724

18:04

Denver (DEN)

20:17

Seattle-Tacoma (SEA)

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:13, non-stop
Airbus A220-100 (221)

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:

Delta Air Lines DL1731

06:05

Denver (DEN)

08:20

Seattle-Tacoma (SEA)

Valid until 2026-01-03

Mon

Tue

Wed

Thu

Fri

Sat

Sun
-

Duration: 3:15, non-stop
Airbus A220-300 (223)

Direct Flights:

Delta Air Lines DL1731

06:05

Denver (DEN)

08:20

Seattle-Tacoma (SEA)

Operates only on 2026-01-04

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat
-

Sun

Duration: 3:15, non-stop
Airbus A220-100 (221)

Direct Flights:

Delta Air Lines DL1731

06:29

Denver (DEN)

08:40

Seattle-Tacoma (SEA)

Effective 2026-01-05 through 2026-02-11

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:11, non-stop
Airbus A220-300 (223)

Direct Flights:

Delta Air Lines DL1731

06:30

Denver (DEN)

08:36

Seattle-Tacoma (SEA)

Effective 2026-03-08 through 2026-03-14

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:06, non-stop
Airbus A220-300 (223)

Direct Flights:

Delta Air Lines DL1731

06:30

Denver (DEN)

08:38

Seattle-Tacoma (SEA)

Effective 2026-03-15 through 2026-04-12

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:08, non-stop
Airbus A220-300 (223)

Direct Flights:

Delta Air Lines DL1731

06:40

Denver (DEN)

08:51

Seattle-Tacoma (SEA)

Effective 2026-02-12 through 2026-03-07

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:11, non-stop
Airbus A220-300 (223)

Direct Flights:

Delta Air Lines DL1731

06:45

Denver (DEN)

08:53

Seattle-Tacoma (SEA)

Effective 2026-04-13 through 2026-10-05

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:08, non-stop
Airbus A220-300 (223)

Direct Flights:

Delta Air Lines DL1731

06:45

Denver (DEN)

08:59

Seattle-Tacoma (SEA)

Effective from 2026-10-06

Mon

Tue

Wed

Thu

Fri

Sat

Sun

Duration: 3:14, non-stop
Airbus A220-300 (223)

Direct Flights:

Southwest Airlines WN1738

08:35

Denver (DEN)

10:35

Seattle-Tacoma (SEA)

Effective 2026-03-10 through 2026-04-01

Mon
-

Tue

Wed

Thu
-

Fri
-

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1780

08:00

Denver (DEN)

10:05

Seattle-Tacoma (SEA)

Effective 2026-06-06 through 2026-08-01

Mon
-

Tue
-

Wed
-

Thu
-

Fri
-

Sat

Sun
-

Duration: 3:05, non-stop
Boeing 737-800 (73H)

Direct Flights:

Southwest Airlines WN1801

17:05

Denver (DEN)

19:05

Seattle-Tacoma (SEA)

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

Mon

Tue
-

Wed
-

Thu

Fri

Sat
-

Sun
-

Duration: 3:00, non-stop
Boeing 737-800 (73H)

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)

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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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