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Cheap flights from Boston to Seattle from ₹ 16,972

BOS — SEA
25 Oct — 1 Nov1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Boston to Seattle

Enter your travel dates to find the best prices.

Cheapest flights from Boston to Seattle

Wed 28/1009:03 -
Nonstop6h 17m
Wed 28/1014:59 -
1 stop11h 29m
Deal found 23/9₹ 30,779
Sat 24/1007:51 -
1 stop15h 35m
Sat 24/1023:00 -
Nonstop5h 26m
Deal found 24/9₹ 31,067
Sat 31/1007:51 -
1 stop16h 42m
Sat 31/1023:59 -
Nonstop5h 26m
Deal found 25/9₹ 32,601
Sat 17/1019:20 -
Nonstop6h 22m
Sat 24/1023:53 -
Nonstop5h 21m
Deal found 25/9₹ 33,848
Sat 17/1019:20 -
Nonstop6h 22m
Wed 21/1022:15 -
1 stop9h 46m
Deal found 24/9₹ 34,806
Wed 14/1019:20 -
Nonstop6h 22m
Sat 17/1022:15 -
1 stop9h 46m
Deal found 22/9₹ 35,094

Find flight deals from Boston to Seattle

Round-trip from

₹ 30,779

One-way from

₹ 16,972

Popular in

December

Cheapest in

March

Average price

₹ 39,984

Good round-trip deal

₹ 16,600 or less

Good one-way deal

₹ 8,502 or less
Alaska Airlines
  • Alaska Airlines
  • 28/10-28/10
  • 1 total stop
  • 17h 46m total
  • Boston to Seattle
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JetBlue
  • JetBlue
  • 21/10-31/12
  • Nonstop
  • 6h 22m total
  • Boston to Seattle
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Highest demand for flights based on searches. 4% potential increase in price (₹ 193,771 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (₹ 85,927 potential savings vs. average return price).
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Average for round-trip flights in September 2026
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Price to beat on a round-trip flight from Boston Logan Intl to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Boston Logan Intl to Seattle/Tacoma Intl.
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Cheapflights Fare Finder

 
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

Tue 3/11

17:55-23:30

1 stop8h 35m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 17,931

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Thu 5/11

16:20-00:45

1 stop11h 25m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 19,081

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Sun 10/1

05:05-11:10

1 stop9h 05m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 21,287

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Tue 3/11

17:55-21:20

Nonstop6h 25m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 21,478

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Thu 5/11

07:13-10:39

Nonstop6h 26m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 21,478

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Mon 9/11

19:25-22:55

Nonstop6h 30m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 21,478

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

₹ 21,478
Fastest return journey

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Fri 13/11

15:45-19:06

Nonstop6h 21m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 21,478

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Thu 3/12

07:50-11:21

Nonstop6h 31m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 21,478

BostonSeattle

BOS Boston Logan Intl - SEA Seattle/Tacoma Intl

BOSSEA

Boston Logan Intl

Mon 5/10

19:09-22:31

Nonstop6h 22m

Seattle/Tacoma Intl

Wed 31/12

00:00-03:00

Nonstop0h 00m

₹ 24,355

Flights are sorted by cheapest return flights first.

Deals found on 22/9

Showing 1-10 of 22 resultsSorted by cheapest first
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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.
Estimated return price

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 84 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 ₹ 34,039). Flying from Boston to Seattle in December is currently the most expensive (average of ₹ 50,723). 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?

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 ₹ 31,450 and ₹ 48,662 in October.
The cheapest return price found within the last 5 days was ₹ 30,779 on Alaska Airlines (28 Oct–28 Oct).

Related info for your journey

  • 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 United Airlines and Southwest fly from Boston to Seattle in about 8h 49m. The time it takes to get you to your destination can typically vary by up to 4h 16m. 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 (92%), EL AL (80%) or Air France (78%) 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 ₹ 34,039). Flying from Boston to Seattle in December is currently the most expensive (average of ₹ 50,723). 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.

See more FAQs

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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.

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