A stunning twilight view of Seattle's skyline with illuminated skyscrapers and busy traffic below. — flights from Boston to Seattle
BostonSeattle

Flights from Boston to Seattle

Nonstop flights from Boston (BOS) to Seattle (SEA) take about 5h 30m (4,006 km). Alaska Airlines and jetBlue fly it. Lowest fare seen: $142 one-way, nonstop (22 Oct 2026).

All flights from Boston →All flights to Seattle →

Photo of Seattle: Stephen Leonardi on Pexels.

When you land in Seattle

The airport transfer and the few things worth sorting before you fly.

Alaska Airlines plane soaring through a bright sky with fluffy clouds in Seattle. — arriving in Seattle

Airport transfer

SEA → Seattle, booked before you fly

A private driver meets you in arrivals at a price agreed when you book. Book with Welcome Pickups.

See transfer prices
Before you flyAirport lounges at Boston Logan →2 lounges at Boston Logan AirportTrains, buses and taxi faresSEA to Seattle: getting into town →Early arrival or late flightLuggage storage in Seattle →10 drop-off points, from $4.90

Things to book in Seattle

All 22 things to do in Seattle →
from €3.57
Seattle Center Monorail 4.5 · 1,891 Tiqets reviews
Seattle Aquariumfrom €44.59
Seattle Aquarium 4.3 · 353 Tiqets reviews
Woodland Park Zoofrom €20.49
Woodland Park Zoo 4.6 · 143 Tiqets reviews
from €43.10
Seattle Sightseeing Cruises 4.6 · 61 Tiqets reviews

Find hotels in Seattle

Hotels, hostels & more · Expedia

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Airlines flying Boston to Seattle

Carriers on BOS–SEA according to our route data and nonstop fares seen as of 22 Oct 2026. Not a complete list.

✈ Alaska Airlinesnonstop fare seen✈ jetBluenonstop fare seen

Boston to Seattle fares by month

Cheapest month seen for a nonstop flight: Nov 2026, from $142 one-way. Lowest one-way fares seen for departures in each month, read 22 Oct 2026.

DepartingNonstop fromCheaper with stops
Oct 2026$42627 Oct 2026$256 · 1 stop27 Oct 2026 · Alaska Airlines
Nov 2026$1425 Nov 2026 · Alaska Airlines—
Dec 2026$24213 Dec 2026 · Alaska Airlines$230 · 1 stop13 Dec 2026
Jun 2027$24015 Jun 2027 · Alaska Airlines—

When to go for the lowest fare

The next few weeks were the cheapest to fly: from $142 in November 2026, against $230 at best later on.

Nonstop or with a stop

A connection undercut nonstop in 2 of 2 months with both fares.

From Travelpayouts flight-search data, city to city (Boston to Seattle, any airport), USD, read 22 Oct 2026. These are fares that were on sale, not a guarantee of today's price; an airline is named only where we know it flies this route.

More for this trip

Frequently asked questions — Boston to Seattle flights

How long is the flight from Boston to Seattle?
A nonstop flight from Boston (BOS) to Seattle (SEA) takes about 5h 30m, covering 4,006 km. That is an estimate from the distance — actual time varies with the airline, aircraft and winds, and connecting itineraries take longer.
How far is Boston from Seattle by air?
The great-circle distance between Boston Logan International Airport and Seattle–Tacoma International Airport is 4,006 km (2,489 miles), a long-haul route.
Which airlines fly from Boston to Seattle?
Airlines with flights or nonstop fares on the BOS–SEA route include Alaska Airlines and jetBlue. This is not a complete list — schedules change by season, so check the current options before booking.
How much does a flight from Boston to Seattle cost?
The lowest one-way fare seen recently on BOS–SEA was $142 USD with Alaska Airlines (nonstop), departing 5 Nov 2026, found in fare searches as of 22 Oct 2026. Fares change constantly and depend on the date, so check the current price before booking.
What is the cheapest month to fly from Boston to Seattle?
In fares seen on 22 Oct 2026, departures in November 2026 were cheapest, from $142 one-way, against $256 for October 2026, the dearest month. Fares change daily, so check your own dates.
Do I need a visa to travel from Boston to Seattle?
It depends on your passport. Some nationalities can enter Seattle visa-free or get a visa on arrival; others must apply in advance. Use AirConnect's Visa Checker to see the rules for your passport.

Sources: fares from Travelpayouts flight-search data, seen 22 Oct 2026; airlines from each carrier's published network and nonstop fares on sale; distance from OurAirports coordinates; flight time estimated from distance. Fares change daily.

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