🇺🇸 BOS
Boston
2492 mi
SEA 🇺🇸
Seattle

Boston to Seattle Flights

Logan International Airport Seattle–Tacoma International Airport 3 airlines

Get Notified About Route Changes

Track up to 3 airports free. Weekly alerts when airlines add or remove routes.

Sign Up Free

The Boston to Seattle route connects Logan International Airport (BOS) in US with Seattle–Tacoma International Airport (SEA) in US. This medium-haul flight covers approximately 2492 miles (4010 km) with a typical flight time of 5h 50m. This route is served by 3 airlines: Alaska Airlines, Delta Air Lines, JBU. AirportRoutes has tracked 7 unique flight numbers on this route.

Search tickets for this route

Compare flight prices across hundreds of booking sites

Search BOS → SEA flights

Opens a live price search — just pick your dates

Departure Airport

Logan International Airport

ICAO Code:
KBOS
IATA Code:
BOS
City:
🇺🇸 Boston
Country:
US
Elevation:
20 ft

Destination Airport

Seattle–Tacoma International Airport

ICAO Code:
KSEA
IATA Code:
SEA
City:
🇺🇸 Seattle
Country:
US
Elevation:
433 ft

3

Operators

7

Tracked Flights

2492

Miles

5h 50m

Flight Duration

Route Map

Operating Airlines

Airline ICAO IATA
Alaska Airlines ASA AS
Delta Air Lines DAL DL
JetBlue JBU B6

Flight Schedule Pattern

Day Flights Observed Frequency Activity
Monday 4 10%
Tuesday 3 8%
Wednesday 7 18%
Thursday 5 12%
Friday 5 12%
Saturday 7 18%
Sunday 9 22%

Pattern Analysis

7 Tracked Flights:
Data Points: 40
API observations used to build this analysis
Weekdays: 24 flights
Weekend: 16 flights
Business Route More active on weekdays

All Flight Routes

3 Routes
Note: This table shows aggregated route data by airline. Each airline may operate multiple daily flights at different times. See the "Spotted Departure Times" section below for all observed departure times.
Airline Flight Numbers Aircraft Type Typical Time Days Active Last Seen Status
B39M 09:02 9:02 AM (Representative)
M T W T F S S
Jun 17, 2026 Active
A21N 07:15 7:15 AM (Representative)
M T W T F S S
Jun 17, 2026 Active
JetBlue
JBU / B6
A321 07:00 7:00 AM (Representative)
M T W T F S S
Jun 17, 2026 Active
Total Routes: 3
Active Routes: 3
Unique Airlines: 3
Aircraft Types: 3

Spotted Departure Times

Departure Time Operator ICAO IATA
07:00 7:00 AM JetBlue JBU B6
07:15 7:15 AM Delta Air Lines DAL DL
09:02 9:02 AM Alaska Airlines ASA AS

Time Information

Times are shown in the departure airport's local timezone (KBOS - America/New_York).

Total Departure Times: 3
Time Range:
07:00 - 09:02
These are typical departure times observed from actual flights. Times may vary by season and schedule changes.