$748 Cheap United flights Boston (BOS) to Seoul (ICN)

Scoring cheap one-way United Airlines flights from BOS to ICN from $748 on Expedia is a cinch — just filter by “Price (lowest to highest).” Or check out our affordable round-trip fares from $1,343 for your next break.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the least expensive months to jet off to Seoul with United Airlines. You could also find great deals on one-way and round-trip tickets in February.

To grab cheap flights from BOS to ICN with United Airlines, begin your search about one month before your planned departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Want another tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Click on the “Nonstop” filter when searching for direct United Airlines flights from BOS to ICN. It’s also a great way to compare other airlines servicing the same direct route.

Filter your results by “Early Morning” and “Morning” to find the earliest departures from BOS to ICN. Heading off early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Get on a United Airlines flight from Logan Intl. Airport (BOS) to Seoul, and you’ll probably come in to Incheon Intl. Airport (ICN). This is the airline’s main hub here.

A rewarding loyalty program and the opportunity to collect points through United Mileage Plus are the start of the reasons to jet off from BOS to ICN with United Airlines. Plus, when you join our One Key™ program, you can receive OneKeyCash™* on top of any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the ticket type you purchased, a fee is typically charged if you cancel or reschedule your flight more than 24 hours after it’s confirmed. To secure tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when looking for flights. For more information on modifying or canceling your reservation, visit “Trips,” select your flight and tick “Manage Booking.”