The cheapest times to fly from SFO to ICN are

  • January 29th to May 20th (except the week of March 26th)
  • September 17th to December 2nd (except the week of October 1st)

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 SFO to ICN is mid November. Prices can be as high as $1431 for Saturday flights during mid December, or as low as $690 for Tuesday flights around mid November.


When to Fly to Seoul

Flying from San Francisco, CA (SFO) to Seoul (ICN) will usually cost between $706 to $1153 per person if booking more than four weeks in advance. On average the very cheapest time to fly is mid November with an average ticket price of $731. Due to high demand the most expensive time to fly is mid December, with an average price of $1306. Planning your trip to low-cost times can easily save you $575 on economy flights and even more on first-class flights. Generally, any price below $819 can be considered a good price for a round-trip SFO to ICN flight.

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

SFO to ICN Flight Prices

Compared to other flights, the SFO to ICN flight is cheaper than the average and costs less than the average flight leaving from San Francisco. The average price per mile (for a direct flight) is $0.09, 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 $818. Return trip prices are from the ICN to SFO 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 SFO to ICN 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 Hacking SFO to ICN

Flight hacking is when you book two tickets instead of a layover, sometimes with different airlines. You will need to either bring only a carry-on bag (highly recommended) or leave yourself plenty of time to go through security again. Flight hacking is completely allowed, but airlines don’t always tell you the cheapest way to get from SFO to ICN — but Champion Traveler does!

Hack #1: Hong Kong (SFO > HKG > ICN)

  • Price for both tickets: $758
  • Average savings: $62 (7.51%)

See SFO to HKG flights

Hack #2: Manila (SFO > MNL > ICN)

  • Price for both tickets: $808
  • Average savings: $11 (1.34%)

See SFO to MNL flights


Flight Questions Answered

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

Which airlines fly this route?

You can find 33 major airlines flying this route most often: Aeromexico, Air Canada, Air China, Air France, Alaska, American, ANA, Asiana, British Airways, 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, Philippines AirAsia, Shanghai Airlines, Singapore Airlines, THAI, United, Xiamen, and potentially more during busy seasons.

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

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

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

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

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

It depends on the day of the week and the date, but a typical day might have around 91 available flights from SFO to ICN.


Airport Location Info


Departing Airport

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

Return Airport

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


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.