Cheap flights from Boston to Seattle from ₹ 16,603

If you aren’t able to travel during the month of March, then book flights to Seattle from Boston during January instead. Flights to Seattle in January, while not as cheap as those in March, still average around ₹ 36,068.

The cheapest day to depart from Boston to Seattle is on a Wednesday. Travellers who choose to depart for Seattle on a Wednesday will often find tickets for as low as ₹ 32,564. Flights from Boston to Seattle on a Thursday will generally be more expensive and average around ₹ 158,621. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

Our data shows that the cheapest Boston to Seattle flights are usually those with departure times in the morning. Our users have found flights to Seattle in the morning for as low as ₹ 44,046. Try not to purchase tickets in the evening because they tend to be around ₹ 158,621. Of course, these prices can vary depending on the time of year and what airport you fly to.

Fly from Boston Logan Intl to Seattle/Tacoma Intl for the best Boston Logan Intl - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around ₹ 40,402 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Boston for as low as ₹ 36,736 on momondo.

There are 3 cabin classes available to choose from on Boston to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

No. A direct flight is the cheapest option for a flight between Boston to Seattle.

As of September 2026, prices for Boston to Seattle flights are approximately 27% cheaper when compared to flights at the same time last year.

Historically, on average around 17% of flights between Boston and Seattle have experienced a delay on any given week. The average delay length over the past 12 months has been 161 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights departing in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week that experiences the fewest delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, Delta have had the fewest delays on this route over the last 12 months, with about 16% of their flights experiencing any sort of delay.

25 flights are operational daily from Boston to Seattle as of September 2026. The most popular departure time for this route is 19:00, with 52% of flights per day taking off at midday.

178 flights are operational weekly from Boston to Seattle as of September 2026. The most popular departure day for this route is Mon, with 20% of flights per week taking off on this day.