Cheap Flights from Boston to Seattle Starting at $137
Helping travelers to find the best flight offers
Cheapest flights from Boston to Seattle
Fly from Boston to Seattle with confidence — our search scans over 700 airlines, more than 50 agencies, and 5+ top booking systems to uncover the best prices, schedules, and travel conditions for your trip. Compare nonstop and connecting options in seconds and lock in the itinerary that fits your timing and budget.
Remember that on average the ideal time to book flights is 2 months before departure!
Fly nonstop from Boston to Seattle for the fastest, most convenient way to cross the country—perfect when you value time and comfort. While connecting options can sometimes be cheaper, a direct flight gets you to the Pacific Northwest sooner and with fewer hassles, making it ideal for business trips or weekend escapes.
Schedule of direct flights from Boston to Seattle
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Boston to Seattle:
Boston airports overview
Seattle airports overview
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
$137
American Airlines
1 transfer
8h 56m
11/05/2025
The cheapest one-way flight from Boston to Seattle departs on 11/05/2025, is operated by American Airlines and costs $137
Cheapest round trip flight
$199
Alaska Airlines
1 transfer
14h 24m
12/12/2025
The cheapest roundtrip flight from Boston to Seattle departs on 12/12/2025, is operated by Alaska Airlines and costs $199
The fastest flight
6h 16m
Fastest flight from Boston to Seattle takes 6h 16m
Direct flights
Several times a week
There are direct flights on this route 6 days a week: Su, Tu, We, Th, Fr, and Sa
Earliest flight
7:00 AM
Latest flight
6:55 PM
Direct flights count
97
Distance
3999km
Timezone difference
3h
The distance between Boston and Seattle is 3999km (2479 miles). There are 97 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 6:55 PM
October 2025
Lowest price
on average:
$111
Avg Price
More than 5 airlines operate flights from Boston to Seattle, including Hawaiian Airlines, Alaska Airlines, JetBlue Airways, United Airlines, and American Airlines. This is a popular route, so passengers can choose tickets based on budget and preferences. Ticket prices start from $137, 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.
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.
We couldn't find any special offers for flights from Boston to Seattle
How much is the cheapest flight ticket from Boston to Seattle?
The cheapest flight ticket from Boston to Seattle according to data for the last 48 hours costs $137
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: October.
How long does it take to fly from Boston to Seattle?
The fastest flights from Boston to Seattle start from 6 hours 16 minutes in the air.
Which airline can fly direct from Boston to Seattle?
The following airlines operate direct flights on the route Boston — Seattle: Hawaiian Airlines, Alaska Airlines, JetBlue Airways
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
