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Round Trip Flights from Boston to Seattle

09 Mar
BOS
17 Mar
SEA
$ 211.78
09 Mar
BOS
17 Mar
SEA
$ 226.78
09 Apr
BOS
13 Apr
SEA
$ 249.48
08 Apr
BOS
15 Apr
SEA
$ 276.36
*Note: All fares are quoted in USD.

Last updated on Saturday 02/22/2025 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 Boston To Seattle Flights

When it comes to combining nature, innovation, and history, very few cities can match Seattle. This emerald city in Washington has evolved and become the 15th largest metropolitan statistical area in the United States. What Seattle offers tourists depends on what they want to see. The city has everything from historical centers, art galleries, and museums to botanical parks, zoos, and much more. You can visit the Seattle Aquarium, Seattle Art Museum (SAM), and Olympic Sculpture Park. 

Nature has bestowed Seattle with an integral beauty. The city overlooks the stunning views of North Cascades, Whitehorse Mountain, Mount Pilchuck, and Mount Index. Kerry Park is among the most beautiful places to spend a leisurely evening, enjoying the lush beauty. Mount Rainier National Park is another attraction you cannot miss in Seattle. The proximity to nature has made this city a wonder place for outdoor enthusiasts. 

Seattle is a year-round destination; however, there are a few months that promise exceptional experiences with less crowded places and cheap flights from Boston to Seattle. September, October, March, and April are the shoulder months when you can buy cheap airline tickets from Boston to Seattle. Boston Logan International Airport is the main airport for all departures and arrivals. Airlines such as Delta, Alaska, and Southwest regularly operate BOS to SEA flights from here. Seattle-Tacoma International Airport is around 2,492 miles from Boston and will take approximately 5 hours and 38 minutes to reach. 

To know more about flights from Boston to Seattle, you can call our executive 24/7. We are here to assist you with flight bookings, deals, and more. 

Finding Cheap Flights From Boston To Seattle : Frequently Asked Questions

* 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.

Major Carriers Operating Flights From Boston To Seattle
Airline Cheapest Average

ALASKA AIRLINES $98 $283

UNITED AIRLINES $168 $397

AMERICAN AIRLINES $151 $314

Low Cost Carriers Operating Flights From Boston To Seattle
Airline Cheapest Average

ALASKA AIRLINES $98 $283

AMERICAN AIRLINES $151 $314

UNITED AIRLINES $168 $397

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