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Cheapest flights from Boston to Seattle
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.
Remember that on average the ideal time to book flights is 2 months before departure!
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.
Schedule of direct flights from Boston to Seattle
Boston airports overview
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Seattle airports overview
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Frequently asked questions (FAQ)
Answers to questions about the route that travelers are most interested in.
Special offers and sales on air tickets 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.
Alternative routes
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Cheapest one way flight
$156
Alaska Airlines
Direct flight
6h 13m
09/13/2026
The cheapest one-way flight from Boston to Seattle departs on 09/13/2026, is operated by Alaska Airlines and costs $156
Cheapest round trip flight
$199
Alaska Airlines
Direct flight
11h 53m
11/24/2026
The cheapest roundtrip flight from Boston to Seattle departs on 11/24/2026, is operated by Alaska Airlines and costs $199
The fastest flight
6h 13m
Fastest flight from Boston to Seattle takes 6h 13m
Direct flights
Several times a week
There are direct flights on this route 6 days a week: Su, Mo, Tu, Th, Fr, and Sa
Earliest flight
6:00 AM
Latest flight
7:44 PM
Average flight duration
10h 6m
Direct flights count
76
Distance
3999km
Timezone difference
3h
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
Flights from Boston to Seattle are operated by several airlines — Alaska Airlines, United Airlines, and JetBlue Airways. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $156, 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.
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.
Flights from Boston to Seattle from $156 – Compare Airfares | Flaut.Travel
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.
September 2026
Lowest price
on average:
$155
October 2026
Highest price
on average:
$158
Avg Price
What is the cheapest price for flights from Boston to Seattle?
The cheapest flight ticket from Boston to Seattle according to data for the last 48 hours costs $156
When is the best time to buy air tickets on the route Boston — Seattle?
Often the best time to buy tickets from Boston to Seattle is 2 months before departure.
When is the cheapest time of year to fly from Boston to Seattle?
Based on statistics over the past years, the lowest prices for flights from Boston to Seattle can be found flying in these months: September, October.
How long does it take to fly from Boston to Seattle?
The fastest flights from Boston to Seattle start from 6 hours 13 minutes in the air.
Which airline can fly direct from Boston to Seattle?
The following airlines operate direct flights on the route Boston — Seattle: Alaska Airlines, United Airlines
The cost of a one-way flight from Boston to Seattle ranges from $155 (September 2026) to $158 (October 2026). On average, the ticket price is about $157–$158.
We couldn't find any special offers for flights from Boston to Seattle
