Cheap flights from Incheon Intl Airport to San Francisco from $321

If you aren’t able to travel to San Francisco during the month of March, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $531.

The cheapest day to depart from Incheon Intl Airport to San Francisco is on a Wednesday when prices can be found for as low as $650. The most expensive day to fly to San Francisco is Saturday, with ticket prices averaging around $738.

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 $739.

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 $638 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 $546 on momondo.

There are 4 cabin classes available to choose from on Incheon Intl 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 and AIR PREMIA 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 33% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 6 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 24% 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 150 minutes.

Generally, flights departing in the morning tend to experience fewer delays. Flights at night 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. Friday 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 15% of their flights experiencing any sort of delay.

Seattle (SEA) was the most common stop: 67% of momondo users choosing 1-stop flights on this route connected there.

Flights via Seattle (SEA) offer the lowest average round-trip price of $493.

Flights connecting via Vancouver (YVR) have the shortest average one-way travel time: 15h 19m.

Vancouver (YVR) has the shortest average layover time for this route: 2h 19m.

10 flights are operational daily from Incheon Intl Airport to San Francisco as of February 2026. The most popular departure time for this route is 8:00PM, with 62% of flights per day taking off in the evening.

As of February 2026, 71 flights take off from Incheon Intl Airport and land in San Francisco each week. The most common flight departure day for this route is Mon, with 15% of weekly flights taking off on this day.