ICN to SFO: Distance and Flight Time
The distance from Incheon International Airport (ICN) to San Francisco International Airport (SFO) is 9,085 km (5,645 mi). A typical nonstop flight covers it in about 11h 50m, heading northeast. The distance is the same in either direction (SFO to ICN).
How far is it from Seoul to San Francisco?
The great-circle distance between Incheon International Airport (ICN) and San Francisco International Airport (SFO) is 9,085 km (5,645 mi, 4,906 nautical miles). That is the straight-line distance; a real flight is a little longer because of air-traffic routing.
How long is the flight from ICN to SFO?
A nonstop flight typically takes about 11h 50m. This is an estimate from the distance; actual block times depend on the aircraft, winds and the exact routing. SFO is roughly northeast of ICN.
How is the ICN to SFO route written in code?
The pair is written ICN-SFO in IATA codes and RKSI-KSFO in ICAO codes, the form used on a flight plan. Incheon International Airport is ICN (RKSI), San Francisco International Airport is SFO (KSFO).
| ICN | SFO | |
|---|---|---|
| Airport | Incheon International Airport | San Francisco International Airport |
| ICAO code | RKSI | KSFO |
| Country | South Korea | United States |
| Elevation | 23 ft | 13 ft |
| Rank by connections | #14 | #46 |
RKSI starts with R, the ICAO prefix for East Asia; KSFO starts with K, the prefix for the contiguous United States. How ICAO prefixes are laid out.
The two fields sit at almost the same height, within 10 ft (3 m) of each other.
Airlines flying ICN to SFO
5 airlines appear on this route in the open route dataset, 5 of them still listed as active. Each row gives the IATA code, the ICAO code and the radio callsign, which is what an air traffic controller hears:
| IATA | Airline | ICAO | Callsign | Status |
|---|---|---|---|---|
| KE | Korean Air | KAL | Koreanair | Active |
| OZ | Asiana Airlines | AAR | Asiana | Active |
| SQ | Singapore Airlines | SIA | Singapore | Active |
| UA | United Airlines | UAL | United | Active |
| US | US Airways | USA | U S Air | Active |
A further 2 carriers sell this pair as a codeshare without operating it: AI, DL.
Route and carrier data comes from the OpenFlights open dataset, regenerated here on . It is a historical snapshot of scheduled connections, not a live schedule, and it includes codeshare listings, so some carriers shown may no longer operate the route or exist. How we build this · Data and sources.
Frequently asked questions
How far is Seoul from San Francisco?
Incheon International Airport (ICN) and San Francisco International Airport (SFO) are 9,085 km (5,645 mi, 4,906 nautical miles) apart in a straight line.
How long is the flight from ICN to SFO?
A typical nonstop flight between ICN and SFO takes about 11h 50m. Actual times vary with aircraft type, winds and routing.
What direction is SFO from ICN?
San Francisco International Airport (SFO) lies roughly northeast of Incheon International Airport (ICN).
Which airlines fly ICN to SFO?
5 airlines appear on the ICN-SFO route in the open dataset, including Korean Air, Asiana Airlines, Singapore Airlines.
Related routes
Other routes from Seoul (ICN):
Other routes from San Francisco (SFO):
ICN airport code · SFO airport code · Busiest airports worldwide