Compare Cheap Flights from Seattle to Boston

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Round Trip Flights from Seattle to Boston

27 Sep
LAX
05 Oct
SEA
$ 103.46
15 Sep
LAS
22 Sep
SEA
$ 143.59
15 Sep
LAS
22 Sep
SEA
$ 145.62
15 Oct
PHX
21 Oct
SEA
$ 158.96
17 Oct
DEN
19 Oct
SEA
$ 190.47
15 Oct
FLL
20 Oct
SEA
$ 312.39
*Note: All fares are quoted in USD.

Last updated on Friday 08/15/2025 at 05:00 AM, the fares mentioned above are for flight tickets and inclusive of fuel surcharges, service fee and taxes. Based on historical data, these fares are subject to change without prior notice and cannot be guaranteed at the time of booking. Kindly go through our terms and conditions before booking.

Book Seattle To Boston Flights

The presence of historical sites like the Freedom Trail to modern marvels like the New England Aquarium strengthens Boston’s claim as a modern city with a historical twist. Freedom Trail, Boston Common, Boston Tea Party Ships & Museum, USS Constitution, and Fenway Park are some of the historical landmarks that dot the city, endearing it to history buffs. Boston also boasts a flourishing cultural scene, which is evident from the many reputed museums in the city. Some of the popular ones include the Museum of Fine Arts, Isabella Stewart Gardner Museum, New England Aquarium, Museum of Science, John F Kennedy Presidential Library and Museum. 

To enjoy the diverse shopping experiences, head to the high-end boutiques of Newbury Street or visit the Quincy Market for its historic charm. SoWa Art + Design District, with outlet shopping, is also popular among shoppers visiting Boston. Boston is also a foodie’s delight and a hot favorite among the seafood enthusiasts who also love to sink their teeth into delicious baked beans and clam chowder as well as Cannoli, Boston cream pie, Frappes, Lobster rolls, Roast beef sandwiches, and more. 

With a variety of trendy bars and nightclubs and a diverse crowd, Boston has a colorful and action-packed nightlife scene. From breweries that sell crafted beer to movie screenings or a night at the museum, you will have plenty to explore in this fabulous Massachusetts capital. If you want to visit Boston, then you must compare the fares before booking the flights from Seattle to Boston. May to November is the best time to visit the city, with pleasant weather, lively fall foliage, and an array of exciting activities. The winter months from November to April are the cheapest time to visit Boston, with prices of almost everything from travel to accommodation available at reduced rates. The weather, however, can be cold, grey, and uncomfortable. 

The flights operate from Seattle-Tacoma International Airport (SEA) to General Edward Lawrence Logan International Airport (BOS), also known as Boston Logan International Airport. Packedbag allows you to compare and book cheap flights from Seattle to Boston. You can also connect with us 24/7 if you need any more information.
 

* The mentioned flight facts are based on the last 3 months' data. Information regarding the highest and lowest booking months is based on the last 12 months' data.