Delta Air Lines flight DL 1731: Denver - Seattle-Tacoma

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon-Sat 06:05 Denver (DEN) 08:20 Seattle-Tacoma (SEA)
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)
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)
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)
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)
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)
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)
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)
DL 1731 Non-stop Airbus A220-300 (223) 3:14 Effective from 2026-10-06
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Delta Air Lines flight DL 1731:
Denver - Seattle-Tacoma
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Select flight date:
FLIGHT SCHEDULE
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)
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  • DL 1731 is a domestic flight 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 3:06 and 3:15.
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