Cheap flights from San Francisco to Seoul from $368

The month of August is another great option to travel to Seoul, with average flight prices from San Francisco averaging around $662.

According to our data, Monday is the cheapest day to fly to Seoul from San Francisco. The lowest ticket price found for a Monday departure recently was $743. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $862.

Flying to Seoul from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $737 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to Seoul, so prices are often more expensive at around $831 per ticket.

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

You are more likely to see cheaper flights to Seoul from San Francisco when booking week ahead of your departure date. In general, you can expect to find flights to Seoul for around $850 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from San Francisco for as low as $765 on momondo.

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

China Eastern, Delta, and Japan Airlines are the most popular carriers operating from San Francisco to Seoul

United Airlines, AIR PREMIA and Asiana Airlines are the top three most popular airlines that fly to Seoul from San Francisco according to our data. United Airlines is the first choice among our users, with 34% of people opting to fly with this airline when traveling to Seoul. Keep in mind that there are 12 different airlines that fly to Seoul on a routine basis, so you have a few additional options to choose from.

Vancouver (YVR) was the most common stop: 21% of momondo users choosing 1-stop flights on this route connected there.

Flights via Manila (MNL) offer the lowest average round-trip price of $667.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 16h 14m.

Vancouver (YVR) has the shortest average layover time for this route: 2h 04m.

The number of flights available between San Francisco and Seoul is 11 per day as of April 2026. The most frequent departure time is 11:00PM, with 52% of daily flights leaving in the evening.

As of April 2026, 79 flights take off from San Francisco and land in Seoul each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.