Cheap flights from Seattle to Boston

Seattle-Tacoma
SEA
Logan
BOS

Flight deals from Seattle to Boston

Below you can see the best deals on flights Seattle — Boston for upcoming dates. Direct and connecting flights from various airlines — compare prices and choose the right ticket.

Top 10 cheap flights from Seattle to Boston

B6
$ 176

Seattle — Boston

23:42—08:06
12 Sep 2026
5 h 24 m
Direct flight
B6
$ 177

Seattle — Boston

23:42—08:06
15 Sep 2026
5 h 24 m
Direct flight
B6
$ 189

Seattle — Boston

23:42—08:06
11 Sep 2026
5 h 24 m
Direct flight
B6
$ 189

Seattle — Boston

23:42—08:06
14 Sep 2026
5 h 24 m
Direct flight
AS
AS
$ 191

Seattle — Boston

18:51—06:09
15 Sep 2026
8 h 18 m
1 stop
AS
AS
$ 191

Seattle — Boston

18:51—06:09
12 Sep 2026
8 h 18 m
1 stop
AS
AS
$ 191

Seattle — Boston

18:51—06:09
11 Sep 2026
8 h 18 m
1 stop
AS
AS
$ 191

Seattle — Boston

18:51—06:09
14 Sep 2026
8 h 18 m
1 stop
B6
$ 206

Seattle — Boston

23:42—08:06
13 Sep 2026
5 h 24 m
Direct flight
B6
$ 206

Seattle — Boston

23:42—08:06
9 Sep 2026
5 h 24 m
Direct flight

Prices were found in the last 72 hours and may change — check the exact price when you continue.

About the Seattle — Boston flight

Looking for cheap flights from Seattle to Boston? Compare fares from different airlines, check the flight schedule and travel time — and book your Seattle — Boston ticket online at the best price.

The route has direct flights — around 264 flights per week, flights are operated by Alaska Airlines, Hawaiian Airlines, Delta, JetBlue and 4 more airlines, a nonstop flight takes about 5 h 14 min, the distance between the cities is around 4,011 km.

Planning your trip? You may find our Boston travel guide, how to get from the airport into town and Boston weather forecast useful. To catch a low fare, use the low-price calendar and the monthly price chart on this page.

Facts about this route

YesDirect flights
4,011 kmDistance
5 h 14 minTravel time
8Airlines
264 / wkFlights

Flight schedule from Seattle to Boston

The table shows direct flights from Seattle to Boston on the selected date. The flight takes approximately 5 h 14 min. Regular flights are operated by Alaska Airlines, Hawaiian Airlines, Delta and JetBlue. Departures from Seattle-Tacoma International Airport and Paine Field airports, arrivals at Logan International Airport.

For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.

Today
Any time
Last update: 16 Aug 2026

Prices by month

Average one-way fares from Seattle to Boston by month. Tickets are usually cheapest in September (around $215) and priciest in June (about $306) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$294highMay$283highSep$215low
Feb$249mediumJun$306highOct$215low
Mar$272mediumJul$238lowNov$294high
Apr$294highAug$249mediumDec$306high

Some values are estimated based on seasonality.

When to fly

Weather in Boston: it is warmest in July (up to 28 °C on average) and coolest in January (around 3 °C). The driest month is September.

Temperature · Boston

Dry and wet days · Boston

Wind speed and direction · Boston

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How to get the best deal on a Seattle — Boston ticket

  • Book ahead: fares for Seattle — Boston are usually lower 3–8 weeks before departure than at the last minute.
  • Play with your dates — Tuesday, Wednesday and Saturday departures are often cheaper than Friday and Sunday.
  • Seattle is served by more than one airport — compare fares and travel time to each before you book.
  • Compare direct and connecting flights: nonstop is faster, while a connection is sometimes noticeably cheaper.
  • Watch the low-price calendar and the monthly price trend on this page — they make it easier to catch a good date.
  • Travelling light? Pick a cabin-baggage-only fare — tickets without checked luggage are noticeably cheaper.
  • Get to the airport in good time — about 2–3 hours before an international departure and roughly an hour before a domestic one.

Airlines

Flights on the Seattle — Boston route are operated by 8 airlines; Alaska Airlines runs the most flights (around 35% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    31x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight SEA → BOS31x/week
      Duration
      5h 30m
      Days
      MTWTFSS
    35.2%Open →
  • Hawaiian AirlinesHA
    19x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight SEA → BOS19x/week
    21.2%
  • DeltaDL
    19x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight SEA → BOS19x/week
      Duration
      5h 26m
      Days
      MTWTFSS
    21.2%Open →
  • JetBlueB6
    9x/week
    WebsiteFleet: 30742.5M pax/year
    • Direct flight SEA → BOS9x/week
      Duration
      5h 29m
      Days
      MTWTFSS
    10.6%Open →
  • American AirlinesAA
    9x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight SEA → BOS9x/week
      Duration
      5h 24m
      Days
      MTWTFSS
    10.2%Open →
  • Qatar AirwaysQR
    1x/week
    WebsiteFleet: 26640M pax/year
    • Direct flight SEA → BOS1x/week
    0.8%Open →
  • Latam Airlines GroupLA
    1x/week
    WebsiteFleet: 34782M pax/year
    • Direct flight SEA → BOS1x/week
    0.4%Open →
  • United AirlinesUA
    1x/week
    WebsiteFleet: 956165M pax/year
    • Direct flight SEA → BOS1x/week
    0.4%Open →

Cities and airports on the Seattle — Boston route

Flights Seattle — Boston depart from Seattle-Tacoma International Airport and Paine Field and arrive at Logan International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.

Departure

Seattle

SEA
United States
About the cityHow to get thereWeatherAll about the country United States
Arrival

Boston

BOS
United States
About the cityHow to get thereWeatherAll about the country United States
Departure airports
Arrival airports

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Frequently asked questions about the Seattle — Boston flight

How long is the flight from Seattle to Boston?

A nonstop Seattle — Boston flight takes about 5 h 14 min — the distance between the cities is around 4,011 km.

How far is it from Seattle to Boston?

The distance from Seattle to Boston is about 4,011 km, which a nonstop flight covers in around 5 h 14 min.

Are there direct flights from Seattle to Boston?

Yes, there are nonstop flights Seattle — Boston — around 264 flights per week.

Which airlines fly from Seattle to Boston?

Airlines operating Seattle — Boston include Alaska Airlines, Hawaiian Airlines, Delta, JetBlue, American Airlines. See the full list with schedules in the "Airlines" section on this page.

Which airports do Seattle — Boston flights use?

Flights from Seattle depart from Seattle-Tacoma International Airport, Paine Field, and arrive at Logan International Airport. If a city has more than one airport, check which one your ticket uses before you travel.

How much is a ticket from Seattle to Boston?

The price of a Seattle — Boston ticket depends on your travel date, season and demand. Check the current lowest fare and low-price calendar on this page.

When is the best time to book flights Seattle — Boston?

Flights Seattle — Boston are usually cheaper when booked in advance — a few weeks before departure and away from peak dates. Compare prices by month in the price trend chart on this page.

How can I find the cheapest flights from Seattle to Boston?

To catch a low fare Seattle — Boston, book a few weeks in advance, keep your dates flexible, and compare airlines and connecting options. The low-price calendar and monthly price chart on this page show the cheapest days and months at a glance.

How early should I arrive at the airport?

For international flights, plan to be at the airport about 2–3 hours before departure, and around an hour before a domestic flight. Allow extra time during busy travel seasons and at large hubs, where check-in and security lines can be longer.

Where else you can fly from Seattle

See all
Los AngelesAnchorageVancouverSan FranciscoPhoenixSan DiegoSan JoseSpokanePortlandSanta AnaNew York CityBoiseDenverChicagoDallasSalt Lake CitySacramentoLas VegasRedmondAtlantaHonoluluWashington, D.C.MinneapolisPascoAustinBurbankFairbanksEugeneJuneauNashvilleHoustonCalgaryBozemanDetroitPalm SpringsMissoulaMedfordRenoOrlandoVictoria

Where else you can fly from Boston

See all
New York CityWashington, D.C.ChicagoTorontoSan FranciscoAtlantaLos AngelesPhiladelphiaNantucketLondonDallasOrlandoDenverFort LauderdaleDetroitCharlotteRaleighMontrealNashvilleMarthas VineyardMiamiMinneapolisBuffaloSan DiegoPhoenixMadridTampaPittsburghClevelandBarcelonaIndianapolisSan JuanDublinHoustonParisLas VegasAustinRichmondCincinnatiAmsterdam

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