$874 Cheap United flights San Francisco (SFO) to Seoul (ICN)

Set the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines round-trip flights from $661 from SFO to ICN. Affordable one-way options from $874 are available too.**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 cheapest months to jet away to Seoul with United Airlines. You could also find great prices on return and one-way tickets in February.

To find affordable flights from SFO to ICN with United Airlines, start searching about one month before your intended 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. Another helpful 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.

Yes, you can travel from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) on any of United Airlines’s 14 weekly direct flights. Apply Expedia’s “Nonstop” and “Airline” filters to find the United Airlines flight that’ll take you to ICN at a time that suits you.

On average, it takes 12h 51m to travel nonstop from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) with United Airlines.

United Airlines operates the most flights from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) on Friday. With up to 2 daily departures, you’ll get the most options and flexibility on this day.

The first flight from SFO to ICN with United Airlines leaves at 10:30AM UTC-8. You’ll land at 4:15PM UTC+9. The final United Airlines flight of the day takes off at 11:45PM UTC-8 and arrives at 5:40AM UTC+9. With around 20% fewer cancellations for departures before noon, setting off early is typically the best way to go.**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.

Jump on a United Airlines flight from San Francisco Intl. Airport (SFO) to Seoul, and you’ll likely arrive at Incheon Intl. Airport (ICN). This is the airline’s primary hub here.

Journey from SFO to ICN with United Airlines and you can look forward to a range of perks starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You’ll likely be on a Boeing 787-9 or a Boeing 777 when flying United Airlines from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN). However, keep in mind that a different plane may be used due to operational demands.

Changes are typically free within 24 hours of making your booking, but your airline may charge a fee after that. For more information about altering your flights, head to your “Trips,” select your flight and click on “Manage Booking.” If you’d like the freedom to update your itinerary without extra charges, apply the “Changes included” and “No cancel fee” filters when planning your next escape.