starting at $148
starting at $332
starting at $38
starting at $135
starting at $151
Compare airlines, prices, and flight durations for your trip
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 non-stop 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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Answers to questions about the route that travelers are most interested in.
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 5 airlines operate flights from Seattle to Boston, including Alaska Airlines, United Airlines, Southwest Airlines, American Airlines, and Grumeti Air. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $38, 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 $148
starting at $332
starting at $38
starting at $135
starting at $151
Seattle — Boston
01/31/2026
Departure
Direct flight
AS306
starting at $388
Seattle — Boston
02/02/2026
Departure
Direct flight
AS306
starting at $237
Seattle — Boston
04/12/2026
Departure
Direct flight
AS214
starting at $181
Seattle — Boston
04/15/2026
Departure
Direct flight
AS306
starting at $349
Seattle — Boston
02/02/2026
Departure
Direct flight
UA1665
starting at $351
Seattle — Boston
04/19/2026
Departure
Direct flight
AS460
starting at $148
Seattle — Boston
07/15/2026
Departure
Direct flight
AS536
starting at $158
Unable to find information about the schedule of direct flights from
The cheapest one-way flight from Seattle to Boston departs on 04/20/2026, is operated by Southwest Airlines and costs $38
The cheapest roundtrip flight from Seattle to Boston departs on 01/30/2026, is operated by United Airlines and costs $576
Fastest flight from Seattle to Boston takes 5h 14m
There are direct flights on this route 4 days a week: Su, Mo, We, and Sa
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 $38
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: July, February, January.
The fastest flights from Seattle to Boston start from 5 hours 14 minutes in the air.
The following airlines operate direct flights on the route Seattle — Boston: Alaska Airlines, United Airlines
The cost of a one-way flight from Seattle to Boston ranges from $158 (July 2026) to $238 (January 2026). On average, the ticket price is about $190–$414.