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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 Seattle to Boston. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A direct flight is the most convenient and comfortable way to fly from Seattle to Boston, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Seattle to Boston:
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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.
More than 8 airlines operate flights from Seattle to Boston, including Alaska Airlines, United Airlines, American Airlines, Hawaiian Airlines, Air Arabia Abu Dhabi, Southwest Airlines, Frontier Airlines, and Sun Country Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $135, and our service lets you instantly compare all options. The variety of offers simplifies planning: you can choose budget fares or more comfortable options with baggage included or extra services. We help you find the best deals so your trip is cost-efficient.
Starting at $135
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Seattle — Boston
04/17/2026
Departure
Direct flight
AS460
Starting at $521
Seattle — Boston
12/08/2025
Departure
Direct flight
AS536
Starting at $320
Seattle — Boston
12/09/2025
Departure
Direct flight
AS460
Starting at $219
Seattle — Boston
12/11/2025
Departure
Direct flight
UA1372
Starting at $412
Seattle — Boston
12/13/2025
Departure
Direct flight
AA7432
Starting at $416
Seattle — Boston
12/16/2025
Departure
Direct flight
AS7471
Starting at $416
Seattle — Boston
12/18/2025
Departure
Direct flight
AS536
Starting at $317
Seattle — Boston
12/18/2025
Departure
Direct flight
HA6626
Starting at $388
Seattle — Boston
12/25/2025
Departure
Direct flight
AS460
Starting at $230
Seattle — Boston
03/29/2026
Departure
Direct flight
AS460
Starting at $182
Unable to find information about the schedule of direct flights from
The cheapest one-way flight from Seattle to Boston departs on 01/14/2026, is operated by Alaska Airlines and costs $135
The cheapest roundtrip flight from Seattle to Boston departs on 05/15/2026, is operated by Alaska Airlines and costs $136
Fastest flight from Seattle to Boston takes 5h 20m
There are direct flights on this route 3 days a week: Mo, Tu, and Th
The distance between Seattle and Boston is 3999km (2479 miles). There are 76 direct flights from Seattle to Boston. The time difference between Seattle and Boston is 3h. Flights from Seattle begin at 5:00 AM. The latest flight from Seattle departs at 11:10 PM
We couldn't find any special offers for flights from Seattle to Boston
The cheapest flight ticket from Seattle to Boston according to data for the last 48 hours costs $135
Often the best time to buy tickets from Seattle to Boston is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Seattle to Boston can be found flying in these months: December, April, June.
The fastest flights from Seattle to Boston start from 5 hours 20 minutes in the air.
The following airlines operate direct flights on the route Seattle — Boston: Alaska Airlines, United Airlines, American Airlines
The cost of a one-way flight from Seattle to Boston ranges from $160 (December 2025) to $270 (June 2026). On average, the ticket price is about $209–$466.