Direct (nonstop) flights from San Francisco to Seoul
4 airlines fly nonstop from San Francisco International (SFO) to Incheon International Airport (ICN). It's 5,658 miles (9,106 km), about 12h 45m in the air. Operated by Korean Air, Asiana Airlines, United Airlines and others.
Korean Air
Asiana Airlines
United Airlines
Air Premia
Route data last updated: May 29, 2026
Airlines with non-stop flights
OZ
Asiana Airlines
UA
United Airlines
Alternative Routes
Other ways to fly from San Francisco to Seoul with one stop · direct emits 865 kg CO₂ per passenger
Looking for the return flight?
ICN → SFO: Flights from Seoul to San FranciscoOther direct flights from San Francisco
Direct flights from Seoul (ICN)
Frequently Asked Questions
How long is the direct flight from San Francisco to Seoul?
A nonstop flight from San Francisco (SFO) to Seoul (ICN) takes approximately 12 hours and 45 minutes. The distance is 5,658 miles (9,106 km).
Which airlines fly nonstop from San Francisco to Seoul?
4 airlines: Korean Air, Asiana Airlines, United Airlines, Air Premia.
Is there a nonstop flight from San Francisco to Seoul?
Yes. 4 airlines: Korean Air, Asiana Airlines, United Airlines, Air Premia.
How far is San Francisco from Seoul?
The flight distance from San Francisco to Seoul is 5,658 miles (9,106 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Tokyo.
What is the time difference between San Francisco and Seoul?
Seoul is 16 hours ahead of San Francisco. (America/Los_Angeles vs Asia/Seoul.)
Will I experience jet lag flying from San Francisco to Seoul?
Probably — 16-hour time difference means significant jet lag. Expect about 1 day of adjustment per hour of shift. Flying eastward is generally harder to adjust to.
What type of aircraft flies from San Francisco to Seoul?
At 12h 45m, this route typically uses wide-body aircraft — Boeing 777, 787, or Airbus A330/A350. Varies by airline.
Do I need a visa to travel from USA to Republic of Korea?
Depends on your passport. Check with the Republic of Korea embassy or an official visa portal before booking — requirements change.
What is the carbon footprint of a flight from San Francisco to Seoul?
Roughly 865 kg CO2 per passenger one-way. That's about the same as driving 4,325 km.
Is the return flight from Seoul to San Francisco also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from San Francisco to Seoul?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. For long-haul, booking 2-3 months out tends to help. Use "Check Prices" above to compare.
How early should I arrive at San Francisco International for this flight?
3 hours before departure for international flights. You need time for check-in, security, and immigration.