Cheap Flights from Seattle to Boston Logan International

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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? Find the lowest prices on one-way and return tickets right here.

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 October.

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.

Seattle to Boston: Flight information

The things to know before you go.
Cheapest flight foundR 1,565
Cheapest month to flyOctober
Average flight time5 hrs, 29 mins
Most popular airlineHawaiian Airlines
Average flights per week234

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 3,299. 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.
Hawaiian Airlines, Air Tahiti Nui and Alaska Airlines fly direct from Seattle to Boston Logan International.
As of August 2025, there are 234 flights per week flying from Seattle to Boston Logan International.
The cheapest month to fly from Seattle to Boston Logan International is usually October.
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 Friday, 17 October 2025.
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.
The cheapest airline that flies to Boston Logan International is jetBlue .

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

  • Your journey comes together at Seattle's main airport, Seattle-Tacoma International Airport (SEA). Explore the options for booking a flight from Seattle to Logan International Airport (BOS) departing from this terminal.

  • Hop on a direct Seattle to Logan International Airport flight and you'll be in the air for around 5 hours 25 minutes.

  • Boston is three hours ahead of Seattle. Logan International Airport is located in Boston, which is in the UTC-4 timezone.

  • Seattle-Tacoma International Airport (SEA) to Logan International Airport (BOS) is the most popular route. There are 49 direct flights a week to pick from. If you prefer to head out later, take the last flight with JetBlue Airways at 11:55pm. Opt for the first SEA to BOS departure with Delta Air Lines at 7:20am if you'd rather get a move on.

  • Arrive at the airport on time so you don't miss your flight from Seattle to BOS. Be there at least two hours ahead for international flights and an hour early for domestic departures to skip the mad dash to your gate.

  • Delays at check-in and security are more likely if you're jetting off during high season, so allow even more breathing space. The recommendation for peak periods? Get there up to four hours early for international flights and at least two hours for domestic departures.

Airports in Seattle

Seattle-Tacoma International Airport (SEA)

  • Enjoy an uninterrupted journey from Seattle-Tacoma International Airport (SEA). Nonstop flights from Seattle to Logan International Airport (BOS) are available from here.

  • You'll have your pick of carriers offering direct flights from Seattle to Logan International Airport departing from SEA. Get on board with any of these:

  • Alaska Airlines sees the most traveller bookings for flights from SEA to BOS.

  • The carrier with the top on-time arrival rate on this route is Delta Air Lines.

  • The journey from central Seattle to SEA takes around 55 minutes by public transport. If you drive, ride-share or take a cab, you'll cover the 23 kilometres in 20 minutes or so, depending on traffic.

  • Want a leisurely start to your trip? Stay near Seattle-Tacoma International Airport. Whether you've booked an early flight from Seattle to Logan International Airport or prefer not to feel hurried, these hotels are just what you're after:

  • 81.27% of flights leaving Seattle-Tacoma International Airport arrive at their destination on time. With its strong on-time performance, you're unlikely to be delayed when taking off from SEA.

Lake Union Sea Plane Base Airport (LKE)

  • With public transport, you can travel from central Seattle to LKE in around 25 minutes. The terminal is roughly 3 kilometres away, and making the journey by car will take approximately 10 minutes.

  • Get your holiday started early with an additional night away from home. Before your Seattle to BOS flight, stay in one of these hotels close to Lake Union Sea Plane Base Airport:

About Logan International Airport (BOS)

Getting from Logan International Airport (BOS) to central Boston

  • Logan International Airport is about 3 kilometres from central Boston. How long it takes to get to the centre in a car hire or cab depends on the time of day. Do a little research before your trip.

  • When travelling on public transport, expect a journey of roughly 25 minutes.

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

  • R 1,565 is the best price for a one-way ticket from Seattle to Logan International Airport. Return flights start at R 3,299. These prices may change based on availability and demand.

  • Don't leave everything to the last moment. You're more likely to find cheap flights from Seattle to BOS if you book early. Airlines often have some amazing early bird rates.

  • If you can be flexible with your travel plans, use the 'Whole month' tool. It'll give you the lowest price in each month when searching for your Seattle to Logan International Airport ticket.

  • Be the first to know about deals for plane tickets from Seattle to BOS by setting up a Price Alert. We'll send you an email or push notification on the app when prices go down.

  • Find the best deal on a flight from Seattle to Logan International Airport with the help of the filters. Pick your ideal departure and arrival times, airlines and number of stops. You can also sort your results by 'Fastest,' 'Best' or 'Cheapest.'

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

  • May is the quietest month for flights from Seattle to Logan International Airport (BOS), while August is the most popular. Find the ideal time to visit Boston based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Lock in a Seattle to BOS plane ticket departing in July if you're eager to explore the city during its warmest month. You can expect temperatures in Boston to range from 16ºC (61ºF) to 29ºC (84ºF).

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

More about Boston

  • When it comes to looking for somewhere to rest your head, you'll find the best places to stay in Boston right here. Check out these options after you've booked your flight from Seattle to Logan International Airport:

  • Museum of Fine Arts Boston and Freedom Trail are just two of the popular attractions to add to your Boston must-do list. Keep the momentum going by heading to Quincy Market.

Explore more of the United States

  • Yonkers is just one of the many places in the United States waiting to be explored after you've experienced Boston. Around 290 kilometres away to the south-west, check out popular attractions including LEGOLAND Discovery Centre Westchester, Unity Park and Philipse Manor Hall.

  • If you want to check out another major stop in the United States, head for Springfield, roughly 137 kilometres west of Boston. Titanic Museum, Basketball Hall of Fame and Springfield Museums are among the biggest draws.

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