Cheap flights from Washington to Boston from $139

In general, September is the cheapest month to fly from State of Washington to Boston. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $342. If you aren’t able to travel during the month of September, then book flights to Boston from State of Washington during October instead. Flights to Boston in October, while not as cheap as those in September, still average around $352.

The cheapest day to depart from State of Washington to Boston is on a Tuesday when prices can be found for as low as $404. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Boston on Sunday is $528.

According to our data, the cheapest time of day to fly to Boston is at noon. momondo users have found flights departing from State of Washington to Boston at noon for as low as $290. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the morning is when there is more demand to fly to Boston, so prices are often more expensive at around $483 per ticket.

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

You are more likely to see cheaper flights to Boston from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Boston for around $418 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Boston from State of Washington for as low as $361 on momondo.

There are 4 cabin classes available to choose from on State of Washington to Boston flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Southwest, United Airlines, and JetBlue are the most popular carriers operating from Washington to Boston Logan Intl

Delta, Alaska Airlines and JetBlue are the top three most popular airlines that fly to Boston from State of Washington according to our data. Delta is the first choice among our users, with 41% of people opting to fly with this airline when traveling to Boston. Keep in mind that there are 8 different airlines that fly to Boston on a routine basis, so you have a few additional options to choose from.

As of August 2026, there are 29 flights per day flying from State of Washington to Boston. The most common time of day flights depart is 11:00AM, with 63% of flights taking off at noon.

As of August 2026, there are 208 flights per week flying from State of Washington to Boston. The most common day of the week flights depart is Thu, with 20% of flights taking off on this day.