Cheap flights from Boston to Seattle
Cheapflights Tip: The best prices from Boston Logan Intl to Seattle/Tacoma Intl are usually found in January or March, booked 31 days in advance, depart on a Wednesday or Tuesday and return on a Monday
Cheap flight deals from Boston to Seattle
Discover tips and strategies to find the most affordable flight options for your journey from Boston (BOS) to Seattle (SEA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 August 2025.
Popular in | August |
|---|---|
Cheapest in | January |
Average price | ₹ 39,346 |
Good one-way deal | ₹ 18,568 or less |
Best time to book a flight from Boston to Seattle
Have a flexible travel schedule? Discover the best time to fly to Seattle from Boston with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Boston to Seattle
How far ahead should I book a flight from Boston to Seattle?
Booking 31 days in advance of your planned departure date is, on average, the best time to get cheap flights from Boston to Seattle. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Boston to Seattle?
Currently, October is the cheapest month in which you can book a flight from Boston to Seattle (average of ₹ 984). Flying from Boston to Seattle in August is currently the most expensive (average of ₹ 1,289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from BOS to SEA?
It’s typically best to fly out from Boston to Seattle at midday. Doing so could potentially save you 36% on the flight price compared to flying in the morning, which is usually more expensive.
Related info for your journey
Find useful and relevant information for your journey from Boston to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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How does Cheapflights help users find flights from Boston to Seattle?
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Why should you use Cheapflights to find cheap flight tickets from Boston to Seattle?
Millions of users choose and trust Cheapflights to book the best flight deals from Boston to Seattle for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from Boston to Seattle with no change fees?
Need flexible booking options for your flight to Seattle from Boston? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.
Can Cheapflights notify me if prices for flights from Boston to Seattle become cheaper?
Not ready to book yet? You can track prices for flights from Boston to Seattle on Cheapflights with our Price Alert feature and get notified when better prices are available.