Flight Time from San Francisco to Seoul

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

It takes about 12 hours 47 minutes to fly from San Francisco to Seoul.

By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from San Francisco to Seoul 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 3 flight per week flying from San Francisco to Seoul. You can check the weekly schedule for popular airlines on this route below: Asiana Airlines: S/M/T/W/T/F/S -- OZ6621 (00:36)

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

After crunching the numbers on our May flight calendar, it's currently cheapest to fly from San Francisco to Seoul on May 27, 2026 with Flair Airlines, with prices starting at US$419.

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

The time difference between Seoul and San Francisco 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.