Cheap Flights from Seattle to Boston Starting at $120
Helping travelers to find the best flight offers
Cheapest flights from Seattle to Boston
Find the best fares and schedules for Seattle to Boston flights in seconds — we search over 700 airlines, 50+ agencies and 5+ top booking systems to uncover the cheapest options, ideal times and flexible conditions. Compare nonstop and connecting routes, lock in the fare that suits your plans, and book with confidence knowing you’ve seen the widest market selection available.
Remember that on average the ideal time to book flights is 2 months before departure!
Fly nonstop from Seattle to Boston for the fastest, most convenient way to cross the country — you’ll save travel time and skip the hassle of connections. Direct flights let you relax or work uninterrupted, though connecting options can sometimes be cheaper if you’re flexible with schedule or budget.
Schedule of direct flights from Seattle to Boston
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Seattle to Boston:
Seattle airports overview
Boston 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 Seattle to Boston
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
$120
Alaska Airlines
Direct flight
5h 19m
10/28/2025
The cheapest one-way flight from Seattle to Boston departs on 10/28/2025, is operated by Alaska Airlines and costs $120
Cheapest round trip flight
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There is no information about the cheapest roundtrip flight from Seattle to Boston
The fastest flight
5h 19m
Fastest flight from Seattle to Boston takes 5h 19m
Direct flights
Several times a week
There are direct flights on this route 2 days a week: Tu and Th
Earliest flight
7:50 AM
Latest flight
11:15 PM
Direct flights count
89
Distance
3999km
Timezone difference
3h
The distance between Seattle and Boston is 3999km (2479 miles). There are 89 direct flights from Seattle to Boston. The time difference between Seattle and Boston is 3h. Flights from Seattle begin at 7:50 AM. The latest flight from Seattle departs at 11:15 PM
Flights from Seattle to Boston are operated by several airlines — Alaska Airlines and Hawaiian Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $113, 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.
Seattle–Tacoma International Airport (SEA) is the region’s main international hub, serving a mix of legacy carriers and numerous low-cost and international airlines; it typically offers competitively priced options for both domestic and transpacific flights. Located about 14 miles south of downtown Seattle, travel to the city center usually takes 20–40 minutes by Link light rail or 20–40 minutes by car depending on traffic, with light rail fares generally in the low single-digit range and taxis/rideshares considerably higher. Frequent shuttle and rental-car services add flexibility. Pros: comprehensive amenities, strong connectivity and regular flight frequencies. Cons: can be busy during peak hours and ground transport times vary with congestion.
How much is the cheapest flight ticket from Seattle to Boston?
The cheapest flight ticket from Seattle to Boston according to data for the last 48 hours costs $120
When is the best time to buy air tickets on the route Seattle — Boston?
Often the best time to buy tickets from Seattle to Boston is 2 months before departure.
When is the cheapest time of year to fly from Seattle to Boston?
Based on statistics over the past years, the lowest prices for flights from Seattle to Boston can be found flying in these months: October.
How long does it take to fly from Seattle to Boston?
The fastest flights from Seattle to Boston start from 5 hours 19 minutes in the air.
Which airline can fly direct from Seattle to Boston?
The following airlines operate direct flights on the route Seattle — Boston: Alaska Airlines, Hawaiian Airlines
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 Seattle to Boston
Logan International Airport (BOS) is Boston’s primary international gateway and the region’s main hub, handling a mix of legacy carriers, major network airlines and a growing number of low-cost carriers. Located about 3 miles northeast of downtown, it’s typically perceived as mid-to-premium in price compared with nearby secondary airports. Ground links include the MBTA Silver Line bus (~20–30 minutes, often free from central stations), regular taxis and rideshares (~15–30 minutes depending on traffic, fares vary), and airport shuttles. Pros: extensive domestic and transatlantic connectivity and fast public-transit access to the city. Cons: can be busy and subject to weather or peak-hour congestion, and parking/ground transport costs can add up.
