Popular in | August |
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Cheapest in | January |
Average price | C$ 521 |
Round-trip from | C$ 412 |
Travellers have found that booking a Thursday departure is the best way to save up to 61% on the cost of booking your flights compared to booking on days of the week where this route is of high demand.
Travellers have found it’s best to book a flight 31 days in advance to save up to 33% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 31 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from Boston to Seattle 1-2 weeks in advance for as low as C$ 451, or C$ 758 for flights within the next 24 hours.
Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Seattle. Flights to Seattle from Boston in January are about C$ 487 on average during January, but can be found for as low as C$ 135.
Unlike in the afternoon, when flights are generally more expensive, you can save up to 44% on flights from Boston to Seattle by exploring options for tickets at noon.
Currently, October is the cheapest month in which you can book a flight from Boston to Seattle (average of C$ 303). Flying from Boston to Seattle in March is currently the most expensive (average of C$ 420). 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.
January
C$ 444
February
C$ 459
March
C$ 572
April
C$ 561
May
C$ 433
June
C$ 487
July
C$ 560
August
C$ 570
September
C$ 551
October
C$ 413
November
C$ 430
December
C$ 482
SEA Temperature | 5 - 19 °C |
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10%of flight departures | Early morningMidnight to 6 am |
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59%of flight departures | Morning6 am to noon |
29%of flight departures | AfternoonNoon to 6 pm |
2%of flight departures | Evening6 pm to midnight |
Sunday | 22daily flights |
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Monday | 23daily flights |
Tuesday | 25daily flights |
Wednesday | 21daily flights |
Thursday | 22daily flights |
Friday | 25daily flights |
Saturday | 20daily flights |
Deals for Boston to Seattle flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Boston to Seattle.
Cheapflights does show flights with no change fees to all users. To see these options for flights from Boston to Seattle, users can toggle the no change fees filter when performing a flight search.
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Seattle from Boston today and book when prices fit your budget.