There are most likely no direct flights on the Boston — Seattle route
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The cost of a one-way flight from Boston to Seattle ranges from $168 (October 2026) to $211 (December 2026). On average, the ticket price is about $190–$211.
A non-stop flight is the most convenient and comfortable way to fly from Boston to Seattle, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
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There are most likely no direct flights on the Boston — Seattle route
All airports
Boston — Seattle
11/03/2026
Departure
Direct flight
AS459
starting at $412
Boston — Seattle
11/05/2026
Departure
Direct flight
AS459
starting at $145
Boston — Seattle
11/02/2026
Departure
Direct flight
AS459
starting at $175
Boston — Seattle
12/13/2026
Departure
Direct flight
AS215
starting at $250
Boston — Seattle
11/08/2026
Departure
Direct flight
AS459
starting at $378
Boston — Seattle
04/12/2027
Departure
Direct flight
AS306
starting at $233
Boston — Seattle
10/27/2026
Departure
Direct flight
AS306
starting at $438
Flights from Boston to Seattle are operated by several airlines — Alaska Airlines, United Airlines, and American Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $145, making this destination accessible to travelers with different budgets. We help compare all available options in real time, so you can book tickets at the best value for money. The service ensures transparent search and lets you book affordable flights in just a few clicks.
The cheapest flight ticket from Boston to Seattle according to data for the last 48 hours costs $145
Often the best time to buy tickets from Boston to Seattle is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Boston to Seattle can be found flying in these months: October, December.
The fastest flights from Boston to Seattle start from 6 hours 22 minutes in the air.
The following airlines operate direct flights on the route Boston — Seattle: Alaska Airlines
The cheapest one-way flight from Boston to Seattle departs on 11/05/2026, is operated by Alaska Airlines and costs $145
The cheapest roundtrip flight from Boston to Seattle departs on 11/20/2026, is operated by Frontier Airlines and costs $407
Fastest flight from Boston to Seattle takes 6h 22m
There are direct flights on this route 4 days a week: Su, Mo, Tu, and Th
The distance between Boston and Seattle is 3999km (2479 miles). The average flight duration is 10h 6m. There are 76 direct flights from Boston to Seattle. The time difference between Boston and Seattle is 3h. Flights from Boston begin at 6:00 AM. The latest flight from Boston departs at 7:44 PM
We couldn't find any special offers for flights from Boston to Seattle
