United Airlines flights from Seattle-Tacoma (SEA) to Boston Logan (BOS).

Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:
Tue 09:25 Seattle-Tacoma (SEA) 21:42 Boston Logan (BOS) B
United Airlines UA 1372 1-stop Airbus A319 (319) 9:17 Operates only on 2026-01-06
Daily 09:25 Seattle-Tacoma (SEA) 21:42 Boston Logan (BOS) B
United Airlines UA 1372 1-stop Boeing 737-800 (738) 9:17 Effective 2026-01-07 through 2026-02-03
Wed 09:25 Seattle-Tacoma (SEA) 22:19 Boston Logan (BOS) B
United Airlines UA 1372 1-stop Boeing 737-900 (739) 9:54 Operates only on 2026-02-04
Mon,Tue,Thu-Sun 09:25 Seattle-Tacoma (SEA) 21:42 Boston Logan (BOS) B
United Airlines UA 1372 1-stop Boeing 737-800 (738) 9:17 Effective 2026-02-05 through 2026-02-10
Wed 09:25 Seattle-Tacoma (SEA) 21:45 Boston Logan (BOS) B
United Airlines UA 1372 1-stop Boeing 737-800 (738) 9:20 Operates only on 2026-02-11
Mon,Thu,Fri,Sun 19:30 Seattle-Tacoma (SEA) 08:10 Boston Logan (BOS) B
United Airlines UA 1665 1-stop Boeing 737-800 (738) 9:40 Effective 2026-01-08 through 2026-01-16
The flight arrives 1 day after departure.
Mon 19:30 Seattle-Tacoma (SEA) 08:10 Boston Logan (BOS) B
United Airlines UA 1665 1-stop Airbus A320 (320) 9:40 Effective 2026-01-19 through 2026-02-09
The flight arrives 1 day after departure.
Thu,Fri,Sun 19:30 Seattle-Tacoma (SEA) 08:10 Boston Logan (BOS) B
United Airlines UA 1665 1-stop Boeing 737-800 (738) 9:40 Effective 2026-01-22 through 2026-02-08
The flight arrives 1 day after departure.


United Airlines flights from Seattle-Tacoma (SEA) to Boston Logan (BOS).
Select flight date:
FLIGHT SCHEDULE
Non-Direct Flights:

Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 9:17, 1-stop
Airbus A319 (319)

Non-Direct Flights:

Effective 2026-01-07 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 9:17, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 9:54, 1-stop
Boeing 737-900 (739)

Non-Direct Flights:

Effective 2026-02-05 through 2026-02-10
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Duration: 9:17, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 9:20, 1-stop
Boeing 737-800 (738)

Non-Direct Flights:

Effective 2026-01-08 through 2026-01-16
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 9:40, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.

Non-Direct Flights:

Effective 2026-01-19 through 2026-02-09
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 9:40, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.

Non-Direct Flights:

Effective 2026-01-22 through 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Duration: 9:40, 1-stop
Boeing 737-800 (738)
The flight arrives 1 day after departure.
  • A domestic route departing from the Seattle-Tacoma airport (SEA) and arriving at Boston Logan airport (BOS).
  • The flight distance is 2487 miles, or 4003 km.
  • The timezone of the departure airport is UTC-8 , and the timezone of the arrival airport is UTC-5 . 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.