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Last updated on Monday 08/18/2025 at 05:00 AM, the fares mentioned above are for Round Trip 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.
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You can now plan the perfect vacation from Boston to Seattle as both cities are served by the best airlines, which makes it one of the smoothest travel experiences, plus we have handpicked flight deals on this route. Fly from Boston Logan International Airport (BOS) to Seattle-Tacoma International Airport (SEA), and get ready to explore everything Seattle has. Get your flight tickets in advance to avoid any last-minute hassle and save on your BOS to SEA flights. There are direct, connecting, and nonstop flights from Boston to Seattle operating daily.
The best time to visit Seattle is from September to October. Being the peak summer season, it might affect the hotel and flight prices, but the outdoors are adventurous. If you want to save on flights from BOS to SEA, early fall and spring a great times to travel. Spring from April to May and autumn from September to October are when the crowd fades out, the weather is pleasant, and the fares for Seattle flights from Boston are also lower than compared to the summer. While winters can be the cheapest time to visit Seattle, the cold weather might not favour outdoor activities.
Take your Boston to Seattle flight from the Boston Logan International Airport (BOS). Serving as an international airport, it connects Boston with other global cities. BOS is 3 to 5 miles from downtown and has excellent ground transportation facilities. It serves as a hub for Delta Airlines. Many other domestic and international flights fly in and out of Boston Airport.
Seattle-Tacoma International Airport (SEA) serves Seattle and its surrounding areas with domestic and international flights. It is also one of the busiest airports in the Pacific Northwest region of North America. Flying from Boston, many flights operate connecting and direct flights. You can book BOS to SEA flights with JetBlue Airways, Alaska Airlines, and Delta Airlines.
Seattle is blessed with vibrant city life and breathtaking natural landscapes. Known as the Emerald City for its lush greenery, it attracts travelers from around the world who need a nature escape and a little adrenaline dose. The city has everything from cultural experiences to outdoor adventures. Surrounded by mountains and sparkling lakes, the beauty of Seattle is worth witnessing. For outdoor enthusiasts, there are hiking trails like Rattlesnake Ledge or Mount Si. One can also go kayaking on Lake Union or Elliott Bay.
Seattle is a perfect destination for a nature escape and adventure. It is one of the popular places for hiking, kayaking, and more, which attracts major tourism from all over the world. This also means that finding cheap flights from Boston to Seattle can be challenging most of the time. Here are some suggestions to help you organise a trip that will save you more money:
There are many airlines such as United Airlines, Alaska Airlines, JetBlue Airways, and American Airlines that operate on this route.
The distance between Boston (BOS) and Seattle (SEA) is approximately 2495.7 miles.
A nonstop flights on this route typically take around 6 hours and 15 minutes to reach.
St. Louis Lambert International Airport (STL), San Francisco International Airport (SFO), and Denver International Airport (DEN).
Alaska Airlines provides nonstop service on this route.
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