Cheap Flights from Seattle to Boston from $146

Frequently Asked Questions

• What are the cheapest flights from Seattle to Boston (SEA-BOS)?

  Based on Trip.com data, Frontier Airlines offers one-way fares as low as $146 on Cheapest nonstop routes (e.g. SEA to BOS on Fri, Oct 30), while Jetblue Airways offers Cheapest nonstop round-trips from $335 departing on Tue, Oct 20 and returning on Fri, Oct 23.

• Which airlines offer direct flights from Seattle to Boston?

  At the moment, you can catch a nonstop flight from Seattle to Boston with the following airlines, including: Jetblue Airways Alaska Airlines Delta Air Lines Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

• How long does it take to fly from Seattle (SEA) to Boston (BOS) and what is the distance?

  It takes around 5 hours 30 minutes to fly from Seattle (SEA) to Boston (BOS).

• When is the best time to book flights from Seattle to Boston?

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Boston is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

• How many flights are there per week from Seattle to Boston?

  Based on Trip.com data in the past 4 weeks, there is 54 flight per week flying from Seattle to Boston. You can check the weekly schedule for popular airlines on this route below: Delta Air Lines: S/M/T/W/T/F/S -- DL459 (08:28)

• How can I find the best deals on flights from Seattle to Boston?

  To find best deals on flights from Seattle to Boston, you can use various tools on Trip.com:
  · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, Oct 30, with one-way flights priced at just $146.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Alaska Airlines.
  · Set up price alerts to easily monitor ticket prices without having to check every day.
  · Check Trip.com flight deals and promo codes frequently.
  · Avoid peak season unless you book very early. It seems the peak season for Boston travel is around July.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Seattle (SEA) to Boston (BOS) the cheapest?

  The cheapest months to fly from Seattle to Boston is September, when demand for travel is lower.

• Which airports can I fly into Boston from Seattle?

  You can arrive at any of the following airports in Boston: Boston Logan International Airport (BOS), Hartford Barnes Airport (BNH), and Portsmouth International Airport (PSM). Flights from Seattle-Tacoma International Airport to Boston Logan International Airport (SEA-BOS) are by far the most popular option for this route.

• Is there any time difference between Seattle and Boston?

  The time difference between Boston and Seattle is 3h.

• How do I change or cancel my ticket from Seattle to Boston?

  Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

• What is the average cost of a one-way flight from Seattle to Boston?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Seattle to Boston is $263. Fares vary by travel date, airline and availability.

• What is the average cost of a round-trip flight from Seattle to Boston?

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Seattle to Boston is $520. The final price depends on the outbound and return dates, airline and fare conditions.

• How do I book flights from Seattle to Boston on Trip.com?

  Enter Seattle and Boston, choose your travel dates and passengers, then compare flights by price, duration and baggage. Select a fare, review the change and cancellation rules, enter traveler details and complete payment to receive your confirmation.

• Are there budget airlines on the Seattle to Boston route?

  Jetblue Airwaysare the most popular budget airlines flying from Seattle to Boston. Check baggage, seat and payment fees before comparing the final price.