Cheap flights from Boston to Seattle from ₹ 16,256
This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 14/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — SEA
8 Oct — 15 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Boston Logan Intl to Seattle/Tacoma Intl are usually found in March or October, booked 64 days in advance, depart on a Monday or Tuesday and return on a Monday
Cheap flight deals from Boston to Seattle
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from Boston to Seattle
Explore the most affordable flight options available from Boston to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 September 2026.
Tue 27/1013:29 -
1 stop8h 34m
Sat 31/1009:05 -
1 stop9h 19m
Deal found 3/9₹ 29,866
Fri 23/1007:51 -
1 stop15h 35m
Fri 23/1023:00 -
Nonstop5h 26m
Deal found 6/9₹ 29,960
Thu 5/1109:45 -
1 stop9h 42m
Thu 12/1114:30 -
1 stop7h 16m
Deal found 3/9₹ 30,338
Tue 27/1014:50 -
2 stops10h 50m
Sat 31/1006:15 -
1 stop7h 50m
Deal found 3/9₹ 30,811
Tue 6/1007:03 -
Nonstop6h 17m
Tue 6/1011:31 -
1 stop14h 50m
Deal found 4/9₹ 30,905
Tue 29/907:45 -
1 stop9h 37m
Tue 29/923:14 -
1 stop8h 18m
Deal found 3/9₹ 31,000
Sat 26/905:00 -
2 stops11h 10m
Tue 29/908:30 -
1 stop13h 00m
Deal found 3/9₹ 31,378
Tue 29/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 7/9₹ 31,473
Sat 3/1019:20 -
Nonstop6h 17m
Sat 10/1023:55 -
Nonstop5h 21m
Deal found 7/9₹ 31,567
Sat 26/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 4/9₹ 31,662
Thu 24/915:55 -
1 stop11h 00m
Sat 26/909:15 -
1 stop12h 15m
Deal found 3/9₹ 31,851
Best flights from Boston to Seattle
Discover carefully curated flight deals from Boston to Seattle that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 8 September 2026.
Fri 30/1010:50 -
1 stop13h 15m
Mon 2/1111:10 -
2 stops9h 40m
Deal found 7/9₹ 38,939
Fri 23/1007:03 -
Nonstop6h 17m
Mon 26/1016:54 -
1 stop9h 34m
Deal found 8/9₹ 39,223
Thu 24/1218:15 -
Nonstop6h 27m
Wed 30/1223:15 -
Nonstop5h 22m
Deal found 3/9₹ 40,357
Fri 23/1018:35 -
1 stop9h 05m
Mon 26/1021:15 -
2 stops10h 55m
Deal found 8/9₹ 38,939
Sat 26/917:42 -
1 stop7h 57m
Sat 3/1008:49 -
1 stop17h 32m
Deal found 4/9₹ 39,695
Mon 2/1107:55 -
Nonstop6h 25m
Fri 6/1113:40 -
Nonstop5h 30m
Deal found 4/9₹ 42,247
Thu 10/1207:08 -
Nonstop6h 22m
Mon 14/1215:43 -
Nonstop5h 22m
Deal found 5/9₹ 40,357
Wed 18/1107:13 -
Nonstop6h 26m
Wed 2/1208:21 -
Nonstop5h 25m
Deal found 4/9₹ 40,357
Thu 3/1218:32 -
Nonstop6h 26m
Sun 6/1223:10 -
1 stop13h 17m
Deal found 7/9₹ 41,302
Wed 27/116:56 -
1 stop8h 32m
Mon 1/221:20 -
Nonstop5h 20m
Deal found 6/9₹ 41,302
Direct flights from Boston to Seattle
Explore direct flight options from Boston to Seattle based on user searches, and compare prices and availability for your desired travel dates. Data last updated 8 September 2026.
Tue 29/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 7/9₹ 31,473
Sat 3/1019:20 -
Nonstop6h 17m
Sat 10/1023:55 -
Nonstop5h 21m
Deal found 7/9₹ 31,567
Sat 26/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 4/9₹ 31,662
Mon 28/919:20 -
Nonstop6h 17m
Tue 6/1023:41 -
Nonstop5h 21m
Deal found 7/9₹ 34,024
Mon 28/919:20 -
Nonstop6h 17m
Sun 4/1023:42 -
Nonstop5h 24m
Deal found 7/9₹ 36,576
Sat 26/919:20 -
Nonstop6h 17m
Thu 1/1023:42 -
Nonstop5h 24m
Deal found 4/9₹ 37,332
Thu 24/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 6/9₹ 38,750
Mon 28/919:20 -
Nonstop6h 17m
Thu 1/1023:42 -
Nonstop5h 24m
Deal found 6/9₹ 39,884
Thu 29/1007:03 -
Nonstop6h 17m
Sun 1/1108:47 -
Nonstop5h 30m
Deal found 8/9₹ 40,357
Thu 24/919:20 -
Nonstop6h 17m
Fri 2/1023:42 -
Nonstop5h 24m
Deal found 6/9₹ 41,302
Mon 5/1007:03 -
Nonstop6h 17m
Mon 5/1015:32 -
Nonstop5h 27m
Deal found 7/9₹ 41,774
Last-minute flights from Boston to Seattle
Discover last-minute flight deals from Boston to Seattle. Data last updated 8 September 2026 and is based on user searches.
Thu 24/915:55 -
1 stop11h 00m
Sat 26/909:15 -
1 stop12h 15m
Deal found 3/9₹ 31,851
Sat 26/907:45 -
1 stop9h 37m
Tue 29/907:00 -
1 stop7h 37m
Deal found 3/9₹ 30,338
Sat 26/905:00 -
2 stops11h 10m
Tue 29/908:30 -
1 stop13h 00m
Deal found 3/9₹ 31,378
Sat 26/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 4/9₹ 31,662
Tue 29/907:45 -
1 stop9h 37m
Tue 29/923:14 -
1 stop8h 18m
Deal found 3/9₹ 31,000
Tue 29/919:20 -
Nonstop6h 17m
Sat 3/1023:42 -
Nonstop5h 24m
Deal found 7/9₹ 31,473
Sat 3/1019:20 -
Nonstop6h 17m
Sat 10/1023:55 -
Nonstop5h 21m
Deal found 7/9₹ 31,567
Tue 6/1007:03 -
Nonstop6h 17m
Tue 6/1011:31 -
1 stop14h 50m
Deal found 4/9₹ 30,905
Fri 23/1007:51 -
1 stop15h 35m
Fri 23/1023:00 -
Nonstop5h 26m
Deal found 6/9₹ 29,960
Tue 27/1013:29 -
1 stop8h 34m
Sat 31/1009:05 -
1 stop9h 19m
Deal found 3/9₹ 29,866
Tue 27/1014:50 -
2 stops10h 50m
Sat 31/1006:15 -
1 stop7h 50m
Deal found 3/9₹ 30,811
One-way flights from Boston to Seattle
Search for one-way flight options from Boston to Seattle. Find affordable one-way fares based on user searches. Data last updated 8 September 2026.
Sat 14/1110:40 -
1 stop8h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9₹ 16,256
Wed 28/1007:20 -
1 stop8h 25m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9₹ 16,729
Fri 2/1019:20 -
Nonstop6h 17m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9₹ 16,918
Sat 19/910:03 -
Nonstop6h 12m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 5/9₹ 17,107
Sat 7/1108:00 -
1 stop14h 10m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9₹ 17,201
Wed 4/1116:33 -
1 stop9h 27m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 8/9₹ 17,390
Fri 25/917:01 -
1 stop8h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9₹ 17,863
Thu 19/1108:25 -
2 stops16h 05m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 3/9₹ 17,957
Fri 16/1019:20 -
Nonstop6h 22m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9₹ 18,335
Thu 1/1016:50 -
1 stop10h 45m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/9₹ 18,524
Fri 16/1017:01 -
1 stop8h 55m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 4/9₹ 18,713
Fri 6/1116:33 -
1 stop9h 27m
Wed 31/1200:00 -
Nonstop0h 00m
Deal found 7/9₹ 19,280
Find 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 8 September 2026.
Customise your flight search to find flights from Boston to Seattle that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated 8 September 2026.
Use the filters below to find and compare flights from Boston to Seattle that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Sat 7/11
05:25-16:05
2 stops13h 40m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 17,201
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Wed 4/11
07:03-16:56
1 stop12h 53m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 17,390
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Fri 16/10
14:35-01:00
2 stops13h 25m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 19,753
Fastest return journey
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Fri 23/10
10:50-14:12
Nonstop6h 22m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 20,226
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Mon 12/10
19:25-22:49
Nonstop6h 24m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 20,226
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Wed 3/3
18:32-21:58
Nonstop6h 26m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 20,226
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Fri 13/11
09:03-12:27
Nonstop6h 24m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 20,226
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Thu 1/10
12:55-00:35
2 stops14h 40m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 20,320
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Tue 1/12
15:30-23:30
2 stops11h 00m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 20,509
BostonSeattle
BOS Boston Logan Intl - SEA Seattle/Tacoma Intl
BOSSEA
Boston Logan Intl
Tue 1/12
07:50-11:21
Nonstop6h 31m
Seattle/Tacoma Intl
Wed 31/12
00:00-03:00
Nonstop0h 00m
₹ 21,171
Flights are sorted by cheapest return flights first.
Deals found on 7/9
Showing 1-10 of 20 resultsSorted by cheapest first
1
2
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.
BOS-SEA
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Boston to Seattle
Prices
Airlines
Delays
How far ahead should I book a flight from Boston to Seattle?
Booking 33 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, March is the cheapest month in which you can book a flight from Boston to Seattle (average of ₹ 33,457). Flying from Boston to Seattle in December is currently the most expensive (average of ₹ 49,524). 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?
Find hourly flight availability from Boston to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 September 2026.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Boston to Seattle as you normally would.
How much does it cost for a return flight from Boston to Seattle?
Airfare is below average for this route at the moment.
Boston to Seattle flights typically cost between ₹ 30,433 and ₹ 48,012 in October.The cheapest return price found within the last 5 days was ₹ 29,866 on United Airlines (27 Oct–31 Oct).
Weekly flight availability from Boston to Seattle
Explore weekly flight availability from Boston to Seattle. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 8 September 2026.
The most flights from BOS to SEA are scheduled on a Monday (39 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (2 on average).
How often are flights from Boston to Seattle delayed?
About 17% of weekly flights between Boston and Seattle have experienced delays in the past year, with the average delay time being 164 minutes.
What is the most punctual flight time for Boston to Seattle flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Wednesday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Boston to Seattle flights?
Over the past year, JetBlue have had the lowest number of delays on this route, with just 15% of flights being delayed.
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.
How popular is this Boston to Seattle flight route?
Within the past month, 1 users have taken a look at flights from Boston Logan Intl to Seattle/Tacoma Intl.
How long is the flight from Boston to Seattle?
Airlines like Southwest and Alaska Airlines fly from Boston to Seattle in about 6h 17m. The time it takes to get you to your destination can typically vary by up to 6h 58m. The distance between Boston and Seattle is about 4002 km. This flight may include one or multiple stops.
What are the most reliable airlines from Boston to Seattle?
Consider LATAM Airlines (91%), Korean Air (80%) or EL AL (79%) when booking your flight. These represent the most reliable airlines when flying from Boston to Seattle.
Can I find deals for flights from Boston to Seattle that include hotel bookings?
Yes. In addition to deals on Boston to Seattle flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Boston to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Boston to Seattle.
Can I find deals for business class flights from Boston to Seattle?
Yes. Cheapflights offers flight deals from Boston to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Boston to Seattle?
Currently, March is the cheapest month in which you can book a flight from Boston to Seattle (average of ₹ 33,457). Flying from Boston to Seattle in December is currently the most expensive (average of ₹ 49,524). 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.
Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 8 September 2026.
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from Boston to Seattle?
Cheapflights helps you search for flights from Boston to Seattle via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
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.
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