Airlines operating on route
Starting at $80
Starting at $118
Starting at $139
Starting at $145
Starting at $215
Helping travelers to find the best flight offers
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from Boston to Seattle. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
Starting at $80
Starting at $118
Starting at $139
Starting at $145
Starting at $215
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Boston to Seattle:
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
Alaska Airlines
Every day
Starting at $261
Below you will find a list of airlines operating flights on the Boston — Seattle route and the starting prices for flights of each specific airline on it.
A direct 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.
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Boston to Seattle
Boston — Seattle
06/12/2025
Departure date
Direct flight
AS459
Starting at $347
Boston — Seattle
06/18/2025
Departure date
Direct flight
UA1414
Starting at $180
Boston — Seattle
06/24/2025
Departure date
Direct flight
AS819
Starting at $375
Boston — Seattle
06/28/2025
Departure date
Direct flight
AS819
Starting at $173
Boston — Seattle
07/07/2025
Departure date
Direct flight
B6397
Starting at $325
Boston — Seattle
08/02/2025
Departure date
Direct flight
AS459
Starting at $492
The cheapest flight ticket from Boston to Seattle according to data for the last 48 hours costs $162
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: June, July.
The fastest flights from Boston to Seattle start from 6 hours 18 minutes in the air.
The following airlines operate direct flights on the route Boston — Seattle: Alaska Airlines, United Airlines, JetBlue Airways
We couldn't find any special offers for flights from Boston to Seattle
The cheapest one-way flight from Boston to Seattle departs on 06/28/2025, is operated by Southwest Airlines and costs $162
The cheapest roundtrip flight from Boston to Seattle departs on 10/25/2025, is operated by JetBlue Airways and costs $195
Fastest flight from Boston to Seattle takes 6h 18m
There are direct flights on this route 1 day a week: Th
The distance between Boston and Seattle is 3999km (2479 miles). The average flight duration is 6h 10m. There are 116 direct flights from Boston to Seattle. The time difference between Boston and Seattle is 3h . Flights from Boston begin at 7:00 AM. The latest flight from Boston departs at 6:56 PM.
