Cheap Flights from Boston to Seoul from $420

Frequently Asked Questions

• What are the cheapest flights from Boston to Seoul (BOS-SEL)?

  Based on Trip.com data, WestJet offers one-way fares as low as $420 on Cheapest nonstop routes (e.g. BOS to ICN on Tue, Sep 15), while WestJet offers Cheapest nonstop round-trips from $955 departing on Thu, Oct 15 and returning on Thu, Oct 22.

• Which airlines offer direct flights from Boston to Seoul?

  At the moment, you can catch a nonstop flight from Boston to Seoul with the following airlines, including: Korean Air Air Premia Japan Airlines WestJet 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 Boston (BOS) to Seoul (SEL) and what is the distance?

  It takes around 15 hours 35 minutes to fly from Boston (BOS) to Seoul (SEL).

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

  By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Boston to Seoul 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 Boston to Seoul?

  Based on Trip.com data in the past 4 weeks, there is 6 flight per week flying from Boston to Seoul. You can check the weekly schedule for popular airlines on this route below: Korean Air: S/M/T/W/T/F/S -- KE092 (13:12)

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

  To find best deals on flights from Boston to Seoul, 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 Tue, Sep 15, with one-way flights priced at just $420.
  · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Korean Air.
  · 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 Seoul travel is around January.
  · Get exclusive promo codes for Trip.com app users.

• When are flight tickets from Boston (BOS) to Seoul (SEL) the cheapest?

  The cheapest months to fly from Boston to Seoul is October, when demand for travel is lower.

• Which upcoming date is cheapest to fly from Boston to Seoul on?

  After crunching the numbers on our September flight calendar, it's currently cheapest to fly from Boston to Seoul on September 9, 2026 with WestJet, with prices starting at $421.

• Which airports can I fly into Seoul from Boston?

  You can arrive at any of the following airports in Seoul: Incheon International Airport (ICN), and Gimpo International Airport (GMP). Flights from Boston Logan International Airport to Incheon International Airport (BOS-ICN) are by far the most popular option for this route.

• Is there any time difference between Boston and Seoul?

  The time difference between Seoul and Boston is 14h.

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

  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 Boston to Seoul?

  Based on Trip.com data for flights departing in the next 30 days, the average one-way fare from Boston to Seoul is $1,153. Fares vary by travel date, airline and availability.

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

  Based on Trip.com data for travel in the next 30 days, the average round-trip fare from Boston to Seoul is $2,100. The final price depends on the outbound and return dates, airline and fare conditions.

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

  Enter Boston and Seoul, 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 Boston to Seoul route?

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