Cheap flights from San Francisco to South Korea from $331

If you aren’t able to travel to South Korea during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $691.

On average, the least expensive day to fly to South Korea from San Francisco is on a Monday. momondo users have found tickets for Monday departures for as low as $793. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Saturday, the most expensive travel day of the week, you can expect to see flight prices from San Francisco to South Korea for around $888.

Flying to South Korea from San Francisco in the evening is the least expensive time of day to depart. momondo users have found prices as low as $814 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $866 on average. Flights to South Korea from San Francisco at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

You are more likely to see cheaper flights to South Korea from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to South Korea for around $870 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to South Korea from San Francisco for as low as $761 on momondo.

There are 4 cabin classes available to choose from on San Francisco to South Korea flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

United Airlines, Cathay Pacific, and China Eastern are the most popular carriers operating from San Francisco to South Korea

AIR PREMIA, Asiana Airlines and United Airlines are the top three most popular airlines that fly to South Korea from San Francisco according to our data. AIR PREMIA is the first choice among our users, with 37% of people opting to fly with this airline when traveling to South Korea. Keep in mind that there are 12 different airlines that fly to South Korea on a routine basis, so you have a few additional options to choose from.

Historically, on average around 23% of flights between San Francisco and South Korea have experienced a delay on any given week. The average delay length over the past 12 months has been 227 minutes.

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

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

According to our data, Asiana Airlines have had the least number of delays on this route over the last 12 months; with about 7% of their flights experiencing any sort of delay.

As of September 2026, there are 10 flights per day flying from San Francisco to South Korea. The most common time of day flights depart is 11:00PM, with 58% of flights taking off in the evening.

The number of flights available between San Francisco and South Korea is 71 per week as of September 2026. The most frequent departure day is Fri, with 15% of weekly flights leaving on this day.