Cheap flights from Boston to Seoul from $378

The month of November is another great option to travel to Seoul, with average flight prices from Boston averaging around $1,046.

According to our data, Monday is the cheapest day to fly to Seoul from Boston. The lowest ticket price found for a Monday departure recently was $1,005. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Friday, with ticket prices averaging around $1,191.

Flying to Seoul from Boston in the evening is the least expensive time of day to depart. momondo users have found prices as low as $743 when looking at flights departing in the evening. In the morning is when there is more demand to fly to Seoul, so prices are often more expensive at around $1,076 per ticket.

Fly from Boston Logan Intl to Incheon Intl for the best Boston Logan Intl - Seoul flight prices

You are more likely to see cheaper flights to Seoul from Boston when booking weeks ahead of your departure date. In general, you can expect to find flights to Seoul for around $1,493 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from Boston for as low as $1,064 on momondo.

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

You could potentially save up to 15% on your flight if you consider stops on a Boston to Seoul flight.

As of February 2026, prices for Boston to Seoul flights are approximately 26% cheaper when compared to flights at the same time last year.

Japan Airlines, American Airlines, and Turkish Airlines are the most popular carriers operating from Boston Logan Intl to Seoul

Korean Air, Air Canada and Cathay Pacific are the top three most popular airlines that fly to Seoul from Boston according to our data. Korean Air is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 7 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

Hong Kong (HKG) was the most common stop: 29% of momondo users choosing 1-stop flights on this route connected there.

Flights via Toronto (YYZ) offer the lowest average round-trip price of $975.

Flights connecting via Montreal (YUL) have the shortest average one-way travel time: 16h 55m.

Toronto (YYZ) has the shortest average layover time for this route: 1h 15m.

As of February 2026, there are 2 flights per day flying from Boston to Seoul. The most common time of day flights depart is 11:00AM, with 100% of flights taking off at noon.

The number of flights available between Boston and Seoul is 14 per week as of February 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.