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Cheap Flights from Seattle to Boston Logan International

Compare Seattle to Boston Logan International flight deals

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Flight deals from Seattle to Boston Logan International

Looking for a cheap last-minute deal or the best return flight from Seattle to Boston Logan International Airport? If you want to travel next month, return fares start from R 4,719. Find the lowest prices on one-way and return tickets right here.
Boston.R 1,750 per passenger.Departing Wed, 16 Sep.One-way flight with Southwest Airlines.Outbound indirect flight with Southwest Airlines, departs from Seattle / Tacoma International on Wed, 16 Sep, arriving in Boston Logan International.Price includes taxes and charges.From R 1,750, select.
Boston.R 2,407 per passenger.Departing Tue, 30 Jun.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 30 Jun, arriving in Boston Logan International.Price includes taxes and charges.From R 2,407, select.
Boston.R 2,407 per passenger.Departing Sat, 29 Aug.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Seattle / Tacoma International on Sat, 29 Aug, arriving in Boston Logan International.Price includes taxes and charges.From R 2,407, select.
Boston.R 2,416 per passenger.Departing Tue, 17 Nov.One-way flight with American Airlines.Outbound indirect flight with American Airlines, departs from Seattle / Tacoma International on Tue, 17 Nov, arriving in Boston Logan International.Price includes taxes and charges.From R 2,416, select.
Boston.R 2,477 per passenger.Departing Tue, 15 Sep.One-way flight with jetBlue.Outbound direct flight with jetBlue departs from Seattle / Tacoma International on Tue, 15 Sep, arriving in Boston Logan International.Price includes taxes and charges.From R 2,477, select.
Boston.R 2,491 per passenger.Departing Tue, 13 Oct.One-way flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 13 Oct, arriving in Boston Logan International.Price includes taxes and charges.From R 2,491, select.
Boston.R 2,491 per passenger.Departing Wed, 8 Jul.One-way flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 8 Jul, arriving in Boston Logan International.Price includes taxes and charges.From R 2,491, select.
Boston.R 2,573 per passenger.Departing Thu, 18 Feb.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Thu, 18 Feb, arriving in Boston Logan International.Price includes taxes and charges.From R 2,573, select.
Boston.R 2,989 per passenger.Departing Fri, 21 Aug.One-way flight with Alaska Airlines.Outbound direct flight with Alaska Airlines departs from Seattle / Tacoma International on Fri, 21 Aug, arriving in Boston Logan International.Price includes taxes and charges.From R 2,989, select.
Boston.R 3,047 per passenger.Departing Tue, 15 Dec.One-way flight with United.Outbound indirect flight with United, departs from Seattle / Tacoma International on Tue, 15 Dec, arriving in Boston Logan International.Price includes taxes and charges.From R 3,047, select.
Boston.R 3,136 per passenger.Departing Wed, 30 Dec.One-way flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Wed, 30 Dec, arriving in Boston Logan International.Price includes taxes and charges.From R 3,136, select.
Boston.R 3,137 per passenger.Departing Tue, 10 Nov.One-way flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Tue, 10 Nov, arriving in Boston Logan International.Price includes taxes and charges.From R 3,137, select.
Boston.R 3,145 per passenger.Departing Thu, 18 Feb.One-way flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Thu, 18 Feb, arriving in Boston Logan International.Price includes taxes and charges.From R 3,145, select.
Boston.R 3,461 per passenger.Departing Mon, 15 Jun.One-way flight with Delta.Outbound direct flight with Delta departs from Seattle / Tacoma International on Mon, 15 Jun, arriving in Boston Logan International.Price includes taxes and charges.From R 3,461, select.

Find the cheapest month to fly from Seattle to Boston Logan International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Seattle to Boston Logan International flights are currently cheapest in September.
Jun
from R 2,407
Jul
from R 2,491
Aug
from R 2,407
Sep
from R 1,750
Oct
from R 2,491
Nov
from R 2,416
Dec
from R 3,047
Jan
Find prices
Feb
from R 2,573
Mar
Find prices
Apr
Find prices
May
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Direct flights from Seattle to Boston Logan International

Seattle to Boston Logan International: Alternative routes

Compare routes from Seattle to Boston below. You may find an airport to fly into that's cheaper, faster, or easier than Boston Logan International.

Boston Logan International

5km from central Boston
ClosestCheapest
from R 1,750
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Worcester

68km from central Boston
from R 7,340
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Manchester

72km from central Boston
from R 3,195
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Provincetown

76km from central Boston
from R 7,064
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Fall River

76km from central Boston
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Providence

76km from central Boston
from R 2,644
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Portsmouth

82km from central Boston
from R 5,400
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Seattle to Boston: Flight information

The things to know before you go.
Cheapest flight foundR 1,750
Cheapest month to flySeptember
Average flight time5 hrs, 29 mins
Most popular airlineQatar Airways
Average flights per week846

Finding cheap flights from Seattle to Boston Logan International: Frequently asked questions

The best price we found for a return flight from Seattle to Boston Logan International is R 4,524. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
5 hours and 29 minutes is the average flight time from Seattle to Boston Logan International.
Qatar Airways, Alaska Airlines and Delta fly direct from Seattle to Boston Logan International.
As of June 2026, there are 846 flights per week flying from Seattle to Boston Logan International.
The cheapest month to fly from Seattle to Boston Logan International is usually September.
After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Seattle to Boston Logan International Airport on Wednesday, 16 September 2026.
Yes – the average flight time is 5 hours and 29 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Boston Logan International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Boston is around 40 days in advance, so don’t leave your flight to the last minute.

Flying from Seattle to Boston Logan International Airport (BOS): What you need to know

  • Seattle's main airport is Seattle-Tacoma International Airport (SEA). Explore your options for departing from this base when booking flights from Seattle to Boston Logan International Airport (BOS).

  • The average length of a direct Seattle to Boston Logan International Airport flight is 5 hours 30 minutes.

  • Boston Logan International Airport is located in Boston. The city follows the UTC-5 timezone and is three hours ahead of Seattle.

  • The busiest route is from Seattle-Tacoma International Airport (SEA) to Boston Logan International Airport (BOS), with 51 direct services every week. If you're not one for hanging around, the earliest flight from SEA to BOS is the 7:20am Delta Air Lines service. If you prefer to leave later in the day, the last departure is at 11:55pm with JetBlue Airways.

  • Arriving two hours before an international flight and one hour ahead of a domestic departure are travel rules worth sticking to. Be at the airport with enough time to catch your flight from Seattle to BOS.

  • Popular months like July or holiday times such as Christmas and spring break will mean longer queues at check-in and security. If you're travelling then, play it safe and get to the terminal even earlier. Arriving two hours before domestic flights and up four hours ahead of international flights is a smart idea.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Seattle-Tacoma International Airport (SEA) offers an easy route to your destination. Nonstop flights from Seattle to Boston Logan International Airport (BOS) leave from this terminal.

  • Top airlines that have direct flights from Seattle to Boston Logan International Airport departing SEA include:

  • Delta is the airline with the highest number of bookings for flights from SEA to BOS.

  • Among carriers on this route, Delta leads the way for on-time arrivals.

  • The journey from central Seattle to SEA takes around 35 minutes on public transport. If you drive, ride-share or take a taxi, you'll cover the 23 kilometres in 25 minutes or so, depending on traffic conditions.

  • Looking for a convenient hotel close to Seattle-Tacoma International Airport? If you've booked an early flight from Seattle to Boston Logan International Airport, these stays will put you moments from your check-in counter:

  • Seattle-Tacoma International Airport has a solid on-time record, reducing the likelihood of delays. Departures from SEA arrive at their destination as scheduled 80% of the time.

Seattle Paine Field International Airport (PAE)

  • PAE is about 40 kilometres from central Seattle. It takes 40 minutes or so to get to the airport in a car from the city centre. Public transport takes roughly 1 hour 30 minutes.

  • Get a head start on your holiday with an extra night away from home. Before your Seattle to BOS flight, stay in one of these hotels close to Seattle Paine Field International Airport:

  • Flights from Seattle Paine Field International Airport have a track record for punctuality, with 80% of them arriving as planned.

About Boston Logan International Airport (BOS)

Getting from Boston Logan International Airport (BOS) to central Boston

  • Central Boston is around 8 kilometres from Boston Logan International Airport and takes about 20 minutes to reach by car. See what your options are for heading into the city, whether that's with a taxi, car hire or ride-share.

  • When travelling by public transport, expect a journey time of about 25 minutes.

How to find the cheapest flights from Seattle to Boston Logan International Airport (BOS)

  • R 1,750 is currently the best price for a one-way ticket from Seattle to Boston Logan International Airport. Return flights start from R 4,524. These prices can change depending on availability and demand.

  • To find cheap flights from Seattle to BOS, book in advance. Airlines usually offer the most competitive fares when tickets are first released.

  • Affordable Seattle to Boston Logan International Airport tickets are easier to find when you have flexibility in your schedule. Use the 'Whole month' search tool to compare fares across the month and then choose the cheapest day.

  • You don't need to check every day to find out if prices have dropped when you set up a Price Alert. We'll let you know as soon as a new deal shows up on plane tickets from Seattle to BOS.

  • Tailor your flights using filters. Select your ideal departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Seattle to Boston Logan International Airport.

The best time to fly from Seattle to Boston Logan International Airport (BOS)

  • It's time to figure out when to book your flight from Seattle to Boston Logan International Airport (BOS). July is the peak month for travel to Boston. If you're all about a more relaxed kind of trip, think about going in December.

  • When booking your Seattle to BOS plane ticket, consider the kind of weather forecast you're hoping for. July is the warmest month in Boston, with temperatures ranging from 16ºC (61ºF) to 29ºC (84ºF).

  • If you want cooler conditions, search for a cheap ticket from Seattle to Boston Logan International Airport in January when temperatures are between -8ºC (18ºF) and 6ºC (43ºF).

More about Boston

  • When it comes to searching for somewhere to rest your head, you'll find the most popular stays in Boston right here. Explore these options after you've booked your flight from Seattle to Boston Logan International Airport:

  • Museum of Fine Arts Boston and Freedom Trail are just a couple of the leading attractions to put on your Boston itinerary. Keep the adventure rolling by checking out Boston Tea Party Ships & Museum.

Explore more of the United States

  • You've done Boston, now it's time to discover other corners of the United States. Travel about 290 kilometres southwest to Yonkers to tick off its must-visit sights. From LEGOLAND Discovery Centre Westchester to Philipse Manor Hall and Old Croton Aqueduct Trailhead, there's plenty to keep you busy.

  • If you're looking to explore another well-known destination in the United States, head for Springfield, roughly 137 kilometres west of Boston. Titanic Museum, Basketball Hall of Fame and Springfield Museums are among its highlights.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.