Find United Airlines(UA) flights from Seoul to San Francisco

At the moment, you can catch a nonstop flight from Seoul to San Francisco with the following airlines, including: Air Premia United Airlines Asiana Airlines Korean Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.

It takes about 10 hours 51 minutes to fly from Seoul to San Francisco.

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

Based on Trip.com data in the past 4 weeks, there is 47 flight per week flying from Seoul to San Francisco. You can check the weekly schedule for popular airlines on this route below: United Airlines: S/M/T/W/T/F/S -- UA806 (11:54) United Airlines: S/M/T/W/T/F/S -- UA7289 (21:33)

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

After crunching the numbers on our October flight calendar, it's currently cheapest to fly from Seoul to San Francisco on October 21, 2026 with Air Premia, with prices starting at US$628.

You can land at any one of the following hubs in San Francisco: San Francisco International Airport (SFO). Flying from Incheon International Airport to San Francisco International Airport (ICN-SFO) is by far the most common option on this route.

The time difference between San Francisco and Seoul is 17h.

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.