Cheap flight from Boston to Seattle from $193
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Flights from Boston to Seattle
Find cheap airlines flights from Boston to Seattle
Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.
Cheap flight deals from Boston to Seattle
We've found these cheap flights for you. You can book one-way or round-trip flight tickets.
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Round-trip
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One way
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Cheapest nonstop
BOS 7:25 AM6h 19mNonstopSEA 10:44 AMBoston - Seattle | Tue, Jul 22 | Delta Air Lines
SEA 10:17 PM5h 23mNonstopBOS 6:40 AMSeattle - Boston | Wed, Jul 30 | Delta Air Lines$193 $30336% OFF36% OFF$303 $193 -
BOS 7:15 AM6h 18mNonstopSEA 10:33 AMBoston - Seattle | Tue, Jul 22 | Jetblue Airways
SEA 10:17 PM5h 23mNonstopBOS 6:40 AMSeattle - Boston | Tue, Jul 29 | Delta Air Lines$195 $30336% OFF36% OFF$303 $195 -
BOS 6:29 PM6h 24mNonstopSEA 9:53 PMBoston - Seattle | Tue, Jun 17 | Jetblue Airways
SEA 9:14 PM5h 16mNonstopBOS 5:30 AMSeattle - Boston | Wed, Jun 25 | Jetblue Airways$217 $30328% OFF28% OFF$303 $217
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BOS 6:29 PM6h 24mNonstopSEA 9:53 PMBoston - Seattle | Tue, Jun 24 | Jetblue Airways
SEA 9:14 PM5h 16mNonstopBOS 5:30 AMSeattle - Boston | Wed, Jul 2 | Jetblue Airways$21828% OFF$303 $218
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BOS 7:20 AM6h 18mNonstopSEA 10:38 AMBoston - Seattle | Tue, Jul 15 | Alaska Airlines
SEA 9:13 PM5h 12mNonstopBOS 5:25 AMSeattle - Boston | Wed, Jul 23 | Jetblue Airways$22127% OFF$303 $221 -
BOS 6:50 PM6h 26mNonstopSEA 10:16 PMBoston - Seattle | Mon, Jul 14 | Delta Air Lines
SEA 10:17 PM5h 23mNonstopBOS 6:40 AMSeattle - Boston | Tue, Jul 22 | Delta Air Lines$22626% OFF$303 $226
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BOS 7:25 AM6h 20mNonstopSEA 10:45 AMBoston - Seattle | Tue, Jun 17 | Delta Air Lines
SEA 10:15 PM5h 25mNonstopBOS 6:40 AMSeattle - Boston | Tue, Jun 24 | Delta Air Lines$23124% OFF$303 $231
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BOS 6:00 AM9h 52m1 stopsSEA 12:52 PMBoston - Seattle | Tue, Jul 22 | Hawaiian Airlines
SEA 3:50 PM5h 25mNonstopBOS 12:15 AMSeattle - Boston | Tue, Jul 29 | Delta Air Lines$19934% OFF$303 $199 -
BOS 7:15 AM6h 18mNonstopSEA 10:33 AMBoston - Seattle | Tue, Jul 29 | Jetblue Airways
SEA 10:43 PM8h 31m1 stopsBOS 10:14 AMSeattle - Boston | Tue, Aug 5 | American Airlines$21131% OFF$303 $211
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BOS 5:00 AM10h 24m1 stopsSEA 12:24 PMBoston - Seattle | Tue, Jul 22 | American Airlines
SEA 10:43 PM8h 31m1 stopsBOS 10:14 AMSeattle - Boston | Wed, Jul 30 | American Airlines$21928% OFF$303 $219 -
BOS 1:00 PM17h 25m1 stopsSEA Invalid DateBoston - Seattle | Tue, Jun 17 | Normal Airline
SEA 3:00 PM6hNonstopBOS 4:00 PMSeattle - Boston | Thu, Jun 19 | Normal AirlineFind More FlightsFind More Flights
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Cheapest nonstop
BOS 6:29 PM6h 35mNonstopSEA 10:04 PMBoston - Seattle | Tue, Jul 8 | Jetblue Airways$100 $22455% OFF55% OFF$224 $100
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BOS 6:29 PM6h 35mNonstopSEA 10:04 PMBoston - Seattle | Sat, Jul 26 | Jetblue Airways$109 $22451% OFF51% OFF$224 $109
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BOS 7:15 AM6h 18mNonstopSEA 10:33 AMBoston - Seattle | Tue, Jul 29 | Jetblue Airways$116 $22448% OFF48% OFF$224 $116
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BOS 7:00 AM6h 20mNonstopSEA 10:20 AMBoston - Seattle | Wed, Jul 30 | Jetblue Airways$12644% OFF$224 $126
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BOS 6:29 PM6h 35mNonstopSEA 10:04 PMBoston - Seattle | Tue, Jul 15 | Jetblue Airways$15431% OFF$224 $154
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BOS 6:50 PM6h 26mNonstopSEA 10:16 PMBoston - Seattle | Sat, Jul 12 | Delta Air Lines$17024% OFF$224 $170
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BOS 6:50 PM16h 47m1 stopsSEA 8:37 AMBoston - Seattle | Tue, Jun 24 | Southwest Airlines$10752% OFF$224 $107 -
BOS 8:16 AM15h 14m1 stopsSEA 8:30 PMBoston - Seattle | Sat, Jul 12 | American Airlines$11150% OFF$224 $111
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BOS 5:00 AM12h 18m1 stopsSEA 2:18 PMBoston - Seattle | Tue, Jun 24 | American Airlines$11350% OFF$224 $113
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BOS 6:00 AM29h 37m1 stopsSEA 8:37 AMBoston - Seattle | Tue, Jun 24 | Jetblue Airways$11349% OFF$224 $113
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BOS 1:00 PM17h 25m1 stopsSEA Invalid DateBoston - Seattle | Tue, Jun 17 | Normal AirlineFind More FlightsFind More Flights
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Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.
Flight Info | Boston to Seattle
| Cheapest one-way flight price | $91 |
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| Cheapest round-trip ticket price | $191 |
| Off-season for travel | March |
| Peak season for travel | June |
| Flight distance | 4,005.09 km |
| Average flight time | 6 hours 30 minutes |
| Popular airline | Alaska Airlines |
When is the cheapest time to fly from Boston to Seattle?
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Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Frequently Asked Questions
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When are flight tickets from Boston (BOS) to Seattle (SEA) the cheapest?
Airlines adjust prices for flights from Boston to Seattle based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays. -
How much do flights from Boston (BOS) to Seattle (SEA) cost?
According to Trip.com's data, the lowest price is around $303. -
How long does it take to fly from Boston (BOS) to Seattle (SEA) and what is the distance?
It takes around 6 hours 30 minutes to fly from Boston (BOS) to Seattle (SEA). -
What are the most popular airlines that fly from Boston (BOS) to Seattle (SEA)?
Airlines with flights from Boston (BOS) to Seattle (SEA): Qatar Airways, El Al, Southwest Airlines, American Airlines, Virgin Atlantic, Jetblue Airways, Scandinavian Airlines, Air France, Alaska Airlines, Air Tahiti Nui, Hawaiian Airlines, Korean Air, TAP Air Portugal and Aer Lingus.
How to find a cheap flight from Boston to Seattle
Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from Boston to Seattle. Book your flights at the right time and save more.
Be flexible with your travel dates to get the cheapest Boston to Seattle ticket.
Tap "Date" in the flight search bar to browse the calendar and find airfare from Boston to Seattle for the next six months in 2025. If you're looking to fly within the next three months, the lowest fare is $100 for a one-way ticket on Tue, Jul 8.
Compare cheap Boston to Seattle flight deals from hundreds of airlines.
Our powerful search system compares prices from over 500 airlines. So you can find the cheapest flights from Boston to Seattle. The most affordable airline currently operating on this route is Jetblue Airways.
Set up a Price Alert to track fare drops.
Set up a Price Alert for your Boston to Seattle route to track ticket prices effortlessly—no need to check manually every day.
Don't miss out on cheap Boston to Seattle flight deals and promo codes.
Stay updated on the latest deals with Trip.com Deals and Promo Codes for cheap flights. Sign up for a free membership to unlock even more exclusive flight discounts.
Book early or wait unitl the last minute to fine the best fares.
It's always better to book early! Airlines typically release their lowest fares about a year before departure, so check as soon as flights become available. If you miss that window, you may still find great deals closer to your travel date.
Search for flights on the go.
For the best booking experience on the go, download Trip.com and search for cheap flights from Boston to Seattle to access exclusive deals just for you.
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