Alaska Airlines flights from BOS to SEA
Find comprehensive Alaska Airlines flight information, schedules, and booking details for direct flights from BOS to SEA. Alaska Airlines operates 4-6 flights daily flights on this route.• Flight Duration: 6h 08m - 6h 40m (average flight time)• Distance: 2502 miles (4026 km) (air miles between airports)• Daily Flights: 4-6 flights (scheduled departures per day)
BOS
SEA
FLIGHT TIME
6h 08m - 6h 40m
FLIGHT DISTANCE
2502 miles (4026 km)
6h 26m - 6h 31m
07:11
17:59
2502 miles (4026 km)
March
1 (Show)
51
Alaska Airlines Flight Schedule from BOS to SEA
| Flight | Airline | Departure | Arrival | Aircraft |
|---|---|---|---|---|
AS459 |  Alaska Airlines | 07:11 | 10:42:00 | Boeing 737-900 (winglets) Passenger/BBJ3 |
AS215 | Alaska Airlines | 09:02 | 12:28:00 | Boeing 737-900 (winglets) Passenger/BBJ3 |
AS306 | Alaska Airlines | 17:59 | 21:28:00 | Boeing 737MAX 9 Passenger |
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 6h 08m - 6h 40m.
Pricing patterns: March typically offers lower prices due to reduced demand outside peak travel seasons.
Best departure times: Peak departure times are 7:00, 9:00, 17:00, offering more flight options and potentially better connections.
BOS - SEA flight price statistics
$370
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$227
Feb$197
Mar$243
Apr$563
May$538
Jun$648
Jul$738
Aug$298
Sep$268
Oct$268
Nov$238
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 BOS to SEA?
Alaska Airlines operates 3 flights from BOS to SEA.
What city does SEA airport serve?
SEA airport serves SeaTac.
How long is the Alaska Airlines flight from BOS to SEA?
The flight duration is approximately 6h 08m - 6h 40m.
What is the distance from BOS to SEA?
The distance is 2502 miles (4026 km).
What aircraft does Alaska Airlines use on this route?
Alaska Airlines uses Boeing 737-900 (winglets) Passenger/BBJ3, Boeing 737MAX 9 Passenger 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 07:11 and the latest departs at 17:59.
What is the cheapest month to fly Alaska Airlines from BOS to SEA?
March is typically the cheapest month to fly Alaska Airlines on this route.
What is the average price for a Alaska Airlines flight from BOS to SEA?
The average price for a round-trip Alaska Airlines flight on this route is approximately $370. Prices can vary based on booking time and demand.
How many Alaska Airlines flights operate per week on this route?
Alaska Airlines operates approximately 51 flights per week from BOS to SEA.