$703 Cheap United flights Seoul (ICN) to San Francisco (SFO)

Use the “Price (lowest to highest)” filter on Expedia to search for cheap United Airlines round-trip flights from $478 from ICN to SFO. Affordable one-way tickets from $703 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.

United Airlines flights to San Francisco are generally more affordable in the off-peak months of February and April. Whether you’re searching for a round-trip or one-way ticket, you could find a better deal then.

Getting the best United Airlines deals from ICN to SFO often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better still, you can pocket 17% on average by buying your tickets on a Sunday compared to a Friday, which is often the most expensive day to book.* It’s a good idea to start searching for flights about one month before you plan to travel.*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.

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

On average, it takes 10h 36m to fly nonstop from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO) with United Airlines.

If you’re looking for flexibility, Thursday offers the most choice for United Airlines flights from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO). You can pick from 2 different departures.

The first United Airlines flight from ICN to SFO takes off at 12:45PM UTC+9, arriving at 6:20AM UTC-8. If you’d like to set off later in the day, the last United Airlines flight leaves ICN at 6:00PM UTC+9 and touches down at SFO at 11:40AM UTC-8. Flying early is generally a smart choice as morning flights are 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.

San Francisco Intl. Airport (SFO) is the main San Francisco gateway for United Airlines flights from Incheon Intl. Airport (ICN).

Offering a rewarding loyalty program, United Airlines is a top choice for many travelers journeying from ICN to SFO. Plus, if you’re a United Mileage Plus and One Key™ member booking through Expedia, you can earn OneKeyCash™* on eligible flights along with your airline miles.*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 Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO). However, keep in mind that a different aircraft may be assigned due to operational demands.

Depending on your fare type, a fee will generally apply if you cancel or reschedule your flight more than 24 hours after confirmation. To find flexible fares, select our “Changes included” or “No cancel fee” filter when you search for flights. For more information on modifying or canceling your reservation, visit “Trips,” select your flight and tick “Manage Booking.”