Cheap flights from Seattle to Massachusetts from $141

In general, September is the cheapest month to fly from Seattle to Massachusetts. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $319. If you aren’t able to travel to Massachusetts during the month of September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $335.

According to our data, Wednesday is the cheapest day to fly to Massachusetts from Seattle. The lowest ticket price found for a Wednesday departure recently was $398. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. On the other hand, Sunday is the most expensive day to depart from Seattle because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $526.

Our data shows that the cheapest Seattle to Massachusetts flights are usually those with departure times at noon. Our users have found flights to Massachusetts at noon for as low as $280. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $479 on average. Flights to Massachusetts from Seattle in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to Massachusetts from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Massachusetts for around $415 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Massachusetts from Seattle for as low as $354 on momondo.

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

JetBlue, Delta, and Southwest are the most popular carriers operating from Seattle/Tacoma Intl to Massachusetts

Delta, Alaska Airlines and JetBlue are the top three most popular airlines that fly to Massachusetts from Seattle according to our data. Delta is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Massachusetts. Keep in mind that there are 8 different airlines that fly to Massachusetts on a routine basis, so you have a few additional options to choose from.

As of July 2026, 25 flights take off from Seattle and land in Massachusetts each day. The most common flight departure time for this route is 11:00PM, with 58% of daily flights taking off at noon.

As of July 2026, there are 180 flights per week flying from Seattle to Massachusetts. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.