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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 R3 998. If you aren’t able to travel during the month of January, then book flights to Boston from Seattle during February instead. Flights to Boston in February, while not as cheap as those in January, still average around R5 232.
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 R6 968 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 761 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 March 2025, prices for Seattle to Boston flights are approximately 8% more expensive when compared to flights at the same time last year.
When to book flights from Seattle to Boston
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
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?
Based on momondo bookings for flights between Seattle and Boston, the leading plane model is Airbus A321neo, making up 24,42% of the total bookings. Other popular models include Boeing 737 with 21,02%, Airbus A318/A319/A320/A321 with 15,22%, and Boeing 737-900 Passenger/BBJ3 (winglets) with 11,88%.
Travelling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsWhy 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.