Alaska Airlines flights from SEA to BOS
Find comprehensive Alaska Airlines flight information, schedules, and booking details for direct flights from SEA to BOS. Alaska Airlines operates 3-7 flights daily flights on this route.• Flight Duration: 5h 14m - 6h 35m (average flight time)• Distance: 2502 miles (4026 km) (air miles between airports)• Daily Flights: 3-7 flights (scheduled departures per day)
SEA
BOS
FLIGHT TIME
5h 14m - 6h 35m
FLIGHT DISTANCE
2502 miles (4026 km)
5h 17m - 5h 20m
08:39
23:12
2502 miles (4026 km)
March
1 (Show)
42
Alaska Airlines Flight Schedule from SEA to BOS
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
AS306 |  Alaska Airlines | 08:39 | 16:59:00 | Boeing 737MAX 9 Passenger |
AS1436 | Alaska Airlines | 15:55 | 00:15:00 | Boeing 737-900 (winglets) Passenger/BBJ3 |
AS214 | Alaska Airlines | 23:12 | 07:29:00 | Boeing 737-900 (winglets) Passenger/BBJ3 |
Alaska Airlines Monthly Flight Calendar
December 2025
Route Insights
Duration variability: Flight duration on this route can vary based on aircraft type, wind conditions, and airline scheduling. Average duration is 5h 14m - 6h 35m.
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 8:00, 15:00, 23:00, offering more flight options and potentially better connections.
SEA - BOS flight price statistics
$359
ApproximateThe numbers are average prices found based on user searches for direct flights between the airports. It's calculated from the cheapest prices found per month for a round-trip with 1 adult and can vary depending on the amount of data we have for this particular route.
$214
Jan$228
Feb$198
Mar$238
Apr$238
May$525
Jun$578
Jul$766
Aug$348
Sep$218
Oct$268
Nov$488
DecAlaska Airlines Terminal Information
Terminal information for Alaska Airlines on this route is currently being updated. Please check back soon or contact the airports directly for terminal details.
Frequently Asked Questions about Alaska Airlines Flights
How many Alaska Airlines flights operate from SEA to BOS?
Alaska Airlines operates 3 flights from SEA to BOS.
What city does BOS airport serve?
BOS airport serves Boston.
How long is the Alaska Airlines flight from SEA to BOS?
The flight duration is approximately 5h 14m - 6h 35m.
What is the distance from SEA to BOS?
The distance is 2502 miles (4026 km).
What aircraft does Alaska Airlines use on this route?
Alaska Airlines uses Boeing 737MAX 9 Passenger, Boeing 737-900 (winglets) Passenger/BBJ3 on this route.
Which other airlines operate on this route?
1 other airline operates on this route: Delta Air Lines.
What are the earliest and latest Alaska Airlines flight departure times?
The earliest Alaska Airlines flight departs at 08:39 and the latest departs at 23:12.
What is the cheapest month to fly Alaska Airlines from SEA to BOS?
March is typically the cheapest month to fly Alaska Airlines on this route.
What is the average price for a Alaska Airlines flight from SEA to BOS?
The average price for a round-trip Alaska Airlines flight on this route is approximately $359. Prices can vary based on booking time and demand.
How many Alaska Airlines flights operate per week on this route?
Alaska Airlines operates approximately 42 flights per week from SEA to BOS.