Cheap flights from South Korea to San Francisco from $441

If you aren’t able to travel to San Francisco during the month of April, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $289.

The cheapest day to depart from South Korea to San Francisco is on a Wednesday when prices can be found for as low as $660. The most expensive day to fly to San Francisco is Friday, with ticket prices averaging around $822.

Our data shows that the cheapest South Korea to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $492. Flights in the morning are often more expensive with an average ticket price of $763.

Fly from Incheon Intl to San Francisco for the best South Korea - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from South Korea when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $648 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from South Korea for as low as $467 on momondo.

There are 3 cabin classes available to choose from on South Korea to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

ZIPAIR is the most popular carrier operating from South Korea to San Francisco

Asiana Airlines, United Airlines and AIR PREMIA are the top three most popular airlines that fly to San Francisco from South Korea according to our data. Asiana Airlines is the first choice among our users, with 32% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 5 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 21% of flights between South Korea and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 142 minutes.

Generally, flights departing at night tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Thursday has historically seen more delays on average compared to the rest of the week.

According to our data, United Airlines have had the least number of delays on this route over the last 12 months; with about 13% of their flights experiencing any sort of delay.

The number of flights available between South Korea and San Francisco is 10 per day as of May 2026. The most frequent departure time is 4:00PM, with 41% of daily flights leaving in the evening.

73 flights are operational weekly from South Korea to San Francisco as of May 2026. The most popular departure day for this route is Wed, with 15% of flights per week taking off on this day.