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Cheap flights from Seattle to Boston

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Cheap return flights

KAYAK's recommended return flight deals from the most popular airlines that fly from Seattle to Boston.
American Airlines Logo
SEA-BOS
5h 37mdirect
American Airlines Logo
BOS-SEA
6h 13mdirect
American Airlines
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Condor Logo
SEA-BOS
5h 20mdirect
Condor Logo
BOS-SEA
6h 23mdirect
Condor
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Qatar Airways Logo
SEA-BOS
5h 37mdirect
Qatar Airways Logo
BOS-SEA
6h 23mdirect
Qatar Airways
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Japan Airlines Logo
SEA-BOS
5h 24mdirect
Japan Airlines Logo
BOS-SEA
6h 13mdirect
Japan Airlines
Find Deal
Aer Lingus Logo
SEA-BOS
5h 22mdirect
Aer Lingus Logo
BOS-SEA
6h 30mdirect
Aer Lingus
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Air France Logo
SEA-BOS
5h 39mdirect
Air France Logo
BOS-SEA
6h 23mdirect
Air France
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Delta Logo
SEA-BOS
5h 34mdirect
Delta Logo
BOS-SEA
6h 40mdirect
China Eastern Logo
SEA-BOS
5h 34mdirect
China Eastern Logo
BOS-SEA
6h 40mdirect
China Eastern
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EL AL Logo
SEA-BOS
5h 34mdirect
EL AL Logo
BOS-SEA
6h 20mdirect
Alaska Airlines Logo
SEA-BOS
5h 37mdirect
Alaska Airlines Logo
BOS-SEA
6h 13mdirect
Alaska Airlines
Find Deal
JetBlue Logo
SEA-BOS
5h 27mdirect
JetBlue Logo
BOS-SEA
6h 20mdirect
JetBlue
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Etihad Airways Logo
SEA-BOS
5h 25mdirect
Etihad Airways Logo
BOS-SEA
6h 30mdirect
Etihad Airways
Find Deal
LATAM Airlines Logo
SEA-BOS
5h 34mdirect
LATAM Airlines Logo
BOS-SEA
6h 26mdirect
LATAM Airlines
Find Deal
Scandinavian Airlines Logo
SEA-BOS
5h 34mdirect
Scandinavian Airlines Logo
BOS-SEA
6h 38mdirect
Scandinavian Airlines
Find Deal
Hawaiian Airlines Logo
SEA-BOS
5h 37mdirect
Hawaiian Airlines Logo
BOS-SEA
6h 19mdirect
Hawaiian Airlines
Find Deal
Korean Air Logo
SEA-BOS
5h 34mdirect
Korean Air Logo
BOS-SEA
6h 23mdirect
Korean Air
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Air Tahiti Nui Logo
SEA-BOS
5h 37mdirect
Air Tahiti Nui Logo
BOS-SEA
6h 13mdirect
Air Tahiti Nui
Find Deal
TAP AIR PORTUGAL Logo
SEA-BOS
5h 27mdirect
TAP AIR PORTUGAL Logo
BOS-SEA
6h 19mdirect
TAP AIR PORTUGAL
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Virgin Atlantic Logo
SEA-BOS
5h 39mdirect
Virgin Atlantic Logo
BOS-SEA
6h 40mdirect
Virgin Atlantic
Find Deal
Singapore Airlines Logo
SEA-BOS
5h 27mdirect
Singapore Airlines Logo
BOS-SEA
6h 23mdirect
Singapore Airlines
Find Deal
British Airways Logo
SEA-BOS
5h 37mdirect
British Airways Logo
BOS-SEA
6h 30mdirect
British Airways
Find Deal

See travel insights to Boston from

How to get the cheapest flight ticket from Seattle to Boston

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Boston?

In general, January is the cheapest month to fly from Seattle to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around R4 081. If you aren’t able to travel during the month of January, then book flights to Boston from Seattle during March instead. Flights to Boston in March, while not as cheap as those in January, still average around R5 022.

How far in advance should I book a flight to Boston?

You are more likely to see cheaper flights to Boston from Seattle when booking 14 weeks ahead of your departure date. In general, you can expect to find flights to Boston for around R7 030 when searching 14 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from Seattle for as low as R6 583 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Boston Logan Intl flights?

There are 1 cabin classes available to choose from on Seattle/Tacoma Intl to Boston Logan Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Seattle to Boston flight prices changed over time?

As of April 2025, prices for Seattle to Boston flights are approximately 0% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Boston

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Boston according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Seattle to Boston (SEA to BOS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Boston

Direct flights

None
There are no direct flights from Seattle to Boston. There are no popular flight routes from Seattle to Boston.

  • How far is Seattle/Tacoma Intl to Boston Logan Intl by plane?

    A flight from Seattle/Tacoma Intl to Boston Logan Intl will travel around 3997,7 km.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport are updated daily.

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to Boston Logan Intl Airport.

  • What documentation or ID do you need to fly to Boston Logan Intl Airport?

    The travel and health documents required for your trip to Boston Logan Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s licence, and a passport valid for six-months after you plan to arrive at Boston Logan Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • What is the most popular plane model from Seattle to Boston?


Travelling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Leominster
Cambridge
Salem
Brookline

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Boston?

It is quick and easy to find Seattle to Boston flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Boston that suits you.

Can I find flights from Seattle to Boston with flexible booking policies on momondo?

Yes. All flights to Boston from Seattle on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Seattle to Boston?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Boston from Seattle.

I’m not ready to book a flight from Seattle to Boston right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Seattle to Boston flights. All you need is a valid email address and we will do the rest; it is that quick and easy.


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