The cheapest times to fly from ICN to SFO are

  • January 29th to April 22nd
  • September 17th to December 2nd

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from ICN to SFO is late February and early March. Prices can be as high as $1324 for Saturday flights during early January, or as low as $596 for Tuesday flights around late February and early March.


When to Fly to San Francisco

Flying from Seoul (ICN) to San Francisco, CA (SFO) will usually cost between $616 to $999 per person if booking more than four weeks in advance. On average the very cheapest time to fly is late February and early March with an average ticket price of $632. Due to high demand the most expensive time to fly is early January, with an average price of $1178. Planning your trip to low-cost times can easily save you $545 on economy flights and even more on first-class flights. Generally, any price below $692 can be considered a good price for a round-trip ICN to SFO flight.

See below for a graph of average weekly prices for the ICN to SFO route. All prices are for round-trip tickets in USD.

ICN to SFO Flight Prices

Compared to other flights, the ICN to SFO flight is cheaper than the average and costs less than the average flight leaving from Seoul. The average price per mile (for a direct flight) is $0.08, which is far below average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Saturdays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $81 (9%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $705. Return trip prices are from the SFO to ICN flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from ICN to SFO can generally find a 0-layover flight. Because there is a direct flight option the real-world direct flight time of 11 hour 9 minutes may be realistic.


Flight Questions Answered

Still have questions about flying from ICN to SFO? We’ve got answers.

Which airlines fly this route?

You can find 30 major airlines flying this route most often: Aeromexico, Air Canada, Air China, Alaska, American, ANA, Asiana, Cathay Pacific, China Airlines, China Eastern, China Southern, Delta, EASTAR JET, Ethiopian, EVA Air, Finnair, Hawaiian, Hong Kong Airlines, Hong Kong Express, JAL, KLM, Korean Air, Lufthansa, Peach Aviation, Philippine Airlines, Shanghai Airlines, Singapore Airlines, THAI, United, Xiamen, and potentially more during busy seasons.

How far away is it from San Francisco International Airport to Incheon International Airport?

The distance between the two airports is roughly 5645 miles or 9085 kilometers.

How long does it take to fly from ICN to SFO?

The real-world flight time for a nonstop ICN to SFO flight is about 11 hour 9 minutes.

How many flights go between Seoul and San Francisco, CA?

It depends on the day of the week and the date, but a typical day might have around 92 available flights from ICN to SFO.


Airport Location Info


Departing Airport

Origination code ICN
Origination airport name Incheon International Airport
City Seoul
Country South Korea
Latitude 37.5
Longitude 126.4

Return Airport

Destination code SFO
Destination airport name San Francisco International Airport
City San Francisco, CA
Country the United States
Latitude 37.6
Longitude -122.4


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.