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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.
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.
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.
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
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Boston — Seattle
05/04/2026
Departure
Direct flight
AS1437
starting at $588
Boston — Seattle
05/05/2026
Departure
Direct flight
UA360
starting at $345
Boston — Seattle
05/07/2026
Departure
Direct flight
AS306
starting at $348
Boston — Seattle
08/18/2026
Departure
Direct flight
AS1337
starting at $210
Boston — Seattle
08/19/2026
Departure
Direct flight
B6197
starting at $224
Boston — Seattle
05/23/2026
Departure
Direct flight
AS306
starting at $153
Boston — Seattle
05/24/2026
Departure
Direct flight
AS260
starting at $269
Boston — Seattle
05/27/2026
Departure
Direct flight
AS306
starting at $153
Boston — Seattle
06/30/2026
Departure
Direct flight
B6197
starting at $289
starting at $150
starting at $145
starting at $147
starting at $189
starting at $258
More than 5 airlines operate flights from Boston to Seattle, including Alaska Airlines, United Airlines, JetBlue Airways, American Airlines, and Frontier Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $145, 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.
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: May.
The fastest flights from Boston to Seattle start from 6 hours 16 minutes in the air.
The following airlines operate direct flights on the route Boston — Seattle: Alaska Airlines, United Airlines, JetBlue Airways
The cheapest one-way flight from Boston to Seattle departs on 08/19/2026, is operated by United Airlines and costs $145
The cheapest roundtrip flight from Boston to Seattle departs on 05/24/2026, is operated by JetBlue Airways and costs $320
Fastest flight from Boston to Seattle takes 6h 16m
There are direct flights on this route 6 days a week: Su, Mo, Tu, We, Th, and Sa
The distance between Boston and Seattle is 3999km (2479 miles). There are 20 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 6:42 PM
We couldn't find any special offers for flights from Boston to Seattle
Boston Logan International (BOS) is the city’s main international gateway and a full-service hub for legacy carriers while also handling many low-cost flights, making it a common choice for both business and leisure travelers. Located about 3–5 miles from downtown Boston, Logan is reachable by the MBTA Blue Line and Silver Line buses in roughly 20–30 minutes (fares typically under $5), as well as by taxis and rideshares that can take 10–25 minutes depending on traffic and cost more. Pros: frequent flights, international connections and on-site amenities; cons: can be busy at peak times and ground transport may be affected by congestion or higher fees for some services.
Seattle-Tacoma International Airport (SEA) is the primary international gateway for the Seattle region, functioning as a major hub for full-service carriers and offering a wide range of domestic and transpacific routes. Carriers typically include legacy airlines and several international operators, while low-cost carriers also serve many domestic routes. SEA sits about 14 miles (22 km) south of downtown Seattle; travel times are commonly 20–35 minutes by Link light rail or 20–45 minutes by taxi/rideshare depending on traffic. Public transit fares tend to be modest, with rideshares and taxis costing more. Pros: frequent flights, good amenities and direct connections; cons: can be busy during peak times and security lines may be long.
