Cheap flights from Incheon Intl Airport to San Francisco from $446

If you aren’t able to travel to San Francisco during the month of February, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $543.

The cheapest day to depart from Incheon Intl Airport to San Francisco is on a Tuesday when prices can be found for as low as $658. The most expensive day to fly to San Francisco is Friday, with ticket prices averaging around $811.

Our data shows that the cheapest Incheon Intl Airport 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 $765.

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

You are more likely to see cheaper flights to San Francisco from Incheon Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $643 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Incheon Intl Airport for as low as $465 on momondo.

You could potentially save up to 26% on your flight if you consider stops on a Incheon Intl Airport to San Francisco flight.

As of May 2026, prices for Incheon Intl Airport to San Francisco flights are approximately 15% cheaper when compared to flights at the same time last year.

China Eastern, AIR PREMIA, and United Airlines are the most popular carriers operating from Incheon Intl to San Francisco

Asiana Airlines, United Airlines and AIR PREMIA are the top three most popular airlines that fly to San Francisco from Incheon Intl Airport according to our data. Asiana Airlines is the first choice among our users, with 36% 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 23% of flights between Incheon and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 141 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 14% of their flights experiencing any sort of delay.

Seattle (SEA) was the most common stop: 83% of momondo users choosing 1-stop flights on this route connected there.

Flights via Seattle (SEA) offer the lowest average round-trip price of $611.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 13h 43m.

Vancouver (YVR) has the shortest average layover time for this route: 1h 33m.

10 flights are operational daily from Incheon Intl Airport to San Francisco as of May 2026. The most popular departure time for this route is 4:00PM, with 40% of flights per day taking off in the evening.

As of May 2026, 72 flights take off from Incheon Intl Airport and land in San Francisco each week. The most common flight departure day for this route is Fri, with 15% of weekly flights taking off on this day.