Cheap flights from San Francisco to South Korea from $367

If you aren’t able to travel to South Korea during the month of November, then flying in August is also cheap. Prices for this month can be found on momondo for an average of $662.

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 $757. 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 $859.

Flying to South Korea from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $715 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $830 on average. Flights to South Korea from San Francisco in the morning 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 week ahead of your departure date. In general, you can expect to find flights to South Korea for around $837 when searching week 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 $746 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.

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

United Airlines, AIR PREMIA and Asiana Airlines are the top three most popular airlines that fly to South Korea from San Francisco according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to South Korea. Keep in mind that there are 11 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 22% 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 233 minutes.

Generally, flights departing in the morning 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. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, AIR PREMIA 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.

As of March 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 56% of flights taking off in the evening.

The number of flights available between San Francisco and South Korea is 74 per week as of March 2026. The most frequent departure day is Mon, with 15% of weekly flights leaving on this day.