Cheap flights from Boston to Seattle

Logan
BOS
Seattle-Tacoma
SEA

Flight deals from Boston to Seattle

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

The lowest price for the next 2 months is on 31 August, from $116.

Top 10 cheap flights from Boston to Seattle

F9
F9
F9
$ 116

Boston — Seattle

12:45—09:19
1 Sep 2026
23 h 34 m
2 stops
F9
F9
F9
$ 116

Boston — Seattle

12:45—09:19
31 Aug 2026
23 h 34 m
2 stops
B6
F9
$ 158

Boston — Seattle

20:03—09:19
31 Aug 2026
16 h 16 m
1 stop
B6
F9
$ 158

Boston — Seattle

06:30—09:19
31 Aug 2026
29 h 49 m
1 stop
DL
F9
$ 161

Boston — Seattle

07:45—09:19
31 Aug 2026
28 h 34 m
1 stop
AS
AS
$ 163

Boston — Seattle

17:42—22:39
9 Sep 2026
7 h 57 m
1 stop
AS
AS
$ 163

Boston — Seattle

17:42—22:39
5 Sep 2026
7 h 57 m
1 stop
B6
$ 173

Boston — Seattle

19:21—22:44
5 Sep 2026
6 h 23 m
Direct flight
B6
$ 173

Boston — Seattle

19:20—22:37
12 Sep 2026
6 h 17 m
Direct flight
AS
AS
$ 175

Boston — Seattle

08:00—17:51
10 Sep 2026
12 h 51 m
1 stop

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

About the Boston — Seattle flight

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

The route has direct flights — around 237 flights per week, flights are operated by Alaska Airlines, Delta, Hawaiian Airlines, JetBlue and 4 more airlines, a nonstop flight takes about 6 h 21 min, the distance between the cities is around 4,011 km.

Planning your trip? You may find our Seattle travel guide, how to get from the airport into town and Seattle 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

from $116Min. price
AugustCheapest
JunePeak season
YesDirect flights
4,011 kmDistance
6 h 21 minTravel time
8Airlines
237 / wkFlights

Flight schedule from Boston to Seattle

The table shows direct flights from Boston to Seattle on the selected date. The flight takes approximately 6 h 21 min. Regular flights are operated by Alaska Airlines, Delta, Hawaiian Airlines and JetBlue. Departures from Logan International Airport airports, arrivals at Seattle-Tacoma International Airport and Paine Field.

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: 15 Aug 2026

Flight ticket prices by day: Boston — Seattle

Below is a calendar of the lowest flight ticket prices for Boston — Seattle by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from $116 in August, and the most expensive are around $229 in June. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.

 
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Prices by month

Average one-way fares from Boston to Seattle by month. Tickets are usually cheapest in January (around $224) and priciest in July (about $342) — use the table and chart below to pick the best time to fly.

MonthAverage priceLevelMonthAverage priceLevelMonthAverage priceLevel
Jan$224lowMay$274mediumSep$241medium
Feb$230lowJun$329highOct$233low
Mar$227lowJul$342highNov$260medium
Apr$260mediumAug$323highDec$334high

Some values are estimated based on seasonality.

When to fly

Weather in Seattle: it is warmest in August (up to 25 °C on average) and coolest in December (around 8 °C). The driest month is July.

Tickets are usually cheapest in August and most expensive in June. Compare prices and weather by month in the charts below to pick the best time to fly.

Temperature · Seattle

Dry and wet days · Seattle

Wind speed and direction · Seattle

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

  • Book ahead: fares for Boston — Seattle 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.
  • The cheapest month to fly to Seattle is usually August — plan your trip around it if your dates are flexible.
  • 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 Boston — Seattle route are operated by 8 airlines; Alaska Airlines runs the most flights (around 32% of all flights). Compare carriers, flight shares and schedules below.

  • Alaska AirlinesAS
    25x/week
    WebsiteFleet: 31545M pax/year
    • Direct flight BOS → SEA25x/week
      Duration
      6h 17m
      Days
      MTWTFSS
    32.1%Open →
  • DeltaDL
    19x/week
    WebsiteFleet: 986190M pax/year
    • Direct flight BOS → SEA19x/week
      Duration
      6h 28m
      Days
      MTWTFSS
    23.6%Open →
  • Hawaiian AirlinesHA
    19x/week
    WebsiteFleet: 7511M pax/year
    • Direct flight BOS → SEA19x/week
    23.6%
  • JetBlueB6
    9x/week
    WebsiteFleet: 30742.5M pax/year
    • Direct flight BOS → SEA9x/week
      Duration
      6h 23m
      Days
      MTWTFSS
    11.8%Open →
  • Qatar AirwaysQR
    3x/week
    WebsiteFleet: 26640M pax/year
    • Direct flight BOS → SEA3x/week
    3.4%Open →
  • American AirlinesAA
    3x/week
    WebsiteFleet: 965211M pax/year
    • Direct flight BOS → SEA3x/week
      Duration
      6h 22m
      Days
      MTWTFSS
    3.4%Open →
  • CondorDE
    1x/week
    WebsiteFleet: 508.5M pax/year
    • Direct flight BOS → SEA1x/week
    1.7%Open →
  • Japan AirlinesJL
    1x/week
    WebsiteFleet: 14540M pax/year
    • Direct flight BOS → SEA1x/week
    0.4%Open →

Cities and airports on the Boston — Seattle route

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

Departure

Boston

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

Seattle

SEA
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 Boston — Seattle flight

How long is the flight from Boston to Seattle?

A nonstop Boston — Seattle flight takes about 6 h 21 min — the distance between the cities is around 4,011 km.

How far is it from Boston to Seattle?

The distance from Boston to Seattle is about 4,011 km, which a nonstop flight covers in around 6 h 21 min.

Are there direct flights from Boston to Seattle?

Yes, there are nonstop flights Boston — Seattle — around 237 flights per week.

Which airlines fly from Boston to Seattle?

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

Which airports do Boston — Seattle flights use?

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

How much is a ticket from Boston to Seattle?

The price of a Boston — Seattle ticket depends on your travel date, season and demand: it is usually cheapest to fly in August, and most expensive in June. Tickets typically cost between $116 and $229. Check the current lowest fare and low-price calendar on this page.

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

Flights Boston — Seattle are usually cheaper when booked in advance — a few weeks before departure and away from peak dates; the most budget-friendly month to fly is August. Compare prices by month in the price trend chart on this page.

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

To catch a low fare Boston — Seattle, 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: the most budget-friendly month to fly is usually August.

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 Boston

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

Where else you can fly from Seattle

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

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