Cheap flights Seattle — Boston (SEA — BOS)

Good to know - Cheap tickets Seattle — Boston

Minimal flight time 5h 14m
Flight distance 4001 km
Most popular airline Delta Connection
Round-trip from $98

Airfare Seattle – Boston by month

Here you can find out in what months how much a ticket Seattle – Boston costs to buy cheap plane tickets.

Month One-way Round-trip
September 2026
August 2026
July 2026
June 2026
May 2026
April 2026
March 2026
February 2026
January 2026
December 2025
November 2025
October 2025

Remember that the optimal time for booking air tickets is 59 days before the departure date, this is the average time at which air tickets were sold at the lowest prices.

Schedule of direct flights Seattle — Boston

Departure Arrival Flight days Flight Airlines Flight time Airports
07:20 15:42 tue, wed, sat DL459 Delta Connection 5h 22m Seattle-Tacoma International Airport — Logan International Airport Select dates
07:20 15:43 mon, tue, sun DL459 Delta Connection 5h 23m Seattle-Tacoma International Airport — Logan International Airport Select dates
07:30 15:59 daily DL459 Delta Connection 5h 29m Seattle-Tacoma International Airport — Logan International Airport Select dates
07:40 16:09 wed DL459 Delta Connection 5h 29m Seattle-Tacoma International Airport — Logan International Airport Select dates
07:55 16:20 tue, wed AS306 Alaska Airlines 5h 25m Seattle-Tacoma International Airport — Logan International Airport Select dates
08:15 16:36 daily AS306 Alaska Airlines 5h 21m Seattle-Tacoma International Airport — Logan International Airport Select dates
08:42 17:05 sun AS306 Alaska Airlines 5h 23m Seattle-Tacoma International Airport — Logan International Airport Select dates
15:38 23:59 daily AS460 Alaska Airlines 5h 21m Seattle-Tacoma International Airport — Logan International Airport Select dates
15:42 23:59 mon, tue AS460 Alaska Airlines 5h 17m Seattle-Tacoma International Airport — Logan International Airport Select dates
15:45 23:59 mon, tue, wed, thu, sun DL474 Delta Connection 5h 14m Seattle-Tacoma International Airport — Logan International Airport Select dates
All routes

Dynamics airfare Seattle — Boston by month for the last year

according to LowCost.Club for the last year

The airfare depends on the departure date. Our chart shows the low season prices on route Seattle — Boston

The graph shows that booking flights Seattle — Boston is best planned for May and flights Seattle — Boston — Seattle in the month of October.

Flights Seattle — Boston

The selection of cheap flights Seattle — Boston

The price of the flight Seattle — Boston (United States) — Seattle from $98 (round-trip).

The average price of the flight Seattle — Boston (United States) — Seattle $261 (round-trip).

Low cost flights Seattle — Boston (SEA — BOS)

The distance between Seattle and Boston 2486 miles (or 4001 kilometres).

The time difference between Seattle and Boston is 3 h.

Minimal flight time from Seattle to Boston 5h 14m.

Routes from nearby cities to Boston

A flight from a neighbouring city can help you save money on plane tickets.

Portland — Boston

Kelowna — Boston

Vancouver — Boston

The closest airports to Seattle with a flight to Boston are in Kelowna.

Popular International routes from Seattle

Popular routes from Boston

If you are going to fly from Boston, then study the popular flights. The most popular flights from Boston:

Popular domestic routes from Seattle

FAQ about Seattle — Boston

Yes, they do: DL459, AS306, AS460, DL474, DL473, AS214

Yes, you can fly from Seattle to Boston. Seattle has 3 airports (Boeing Field International Airport, Kenmore Air Harbor SPB, Seattle-Tacoma International Airport) for flights. Delta Connection, Alaska Airlines depart from Seattle on mon, tue, wed, thu, fri, sat, sun. There are non-direct flights through Aer Lingus, Aeromexico, Air Canada, Air France, American Eagle, Atlas Air, Boutique Air, British Airways, Emirates, FedEx, Frontier (Penny the Owl Livery), Hainan Airlines, Hawaiian Airlines, Icelandair, Japan Airlines, Jet Linx Aviation, Korean Air, Lufthansa, NetJets, Qatar Airways, SkyWest Charter, Southwest Airlines, Sun Country Airlines, Tradewind Aviation, Turkish Airlines, United Express, UPS, Virgin Atlantic.

A direct flight lasts an average of 5h 14m, during which time the aircraft covers a distance of 4001 km.

The price of flights Seattle — Boston starts from $98.

Planes fly Seattle — Boston 7 times a week on the following days: mon, tue, wed, thu, fri, sat, sun

In Seattle — Boeing Field International Airport, Kenmore Air Harbor SPB, Seattle-Tacoma International Airport. In Boston — Pease Air Force Base, Logan International Airport, Boston City Heliport.

The following flights fly between Seattle and Boston: DL459, DL459, DL459, DL459, AS306, AS306, AS306, AS460, AS460, DL474, DL473, AS214, DL473, DL473, DL473

High season is considered to be July and the cheapest month is May. Enter your preferred airports (or cities) and dates into the search form above to unlock the latest Seattle — Boston flight deals.

The following airlines have direct flights Seattle — Boston: Delta Connection, Alaska Airlines.

All the following airlines flights Seattle — Boston: Aer Lingus, Aeromexico, Air Canada, Air France, Alaska Airlines, American Eagle, Atlas Air, Boutique Air, British Airways, Delta Connection, Emirates, FedEx, Frontier (Penny the Owl Livery), Hainan Airlines, Hawaiian Airlines, Icelandair, Japan Airlines, Jet Linx Aviation, Korean Air, Lufthansa, NetJets, Qatar Airways, SkyWest Charter, Southwest Airlines, Sun Country Airlines, Tradewind Aviation, Turkish Airlines, United Express, UPS, Virgin Atlantic.

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