$682 Round Trip Flights from San Francisco to Seoul

Expedia has round trip airfares from San Francisco (SFO) to Seoul South Korea (ICN) for $682, nonstop on United and Air Premia. This fare includes a personal item, a carry-on bag, and one free checked bag, but does not permit seat selection or changes. You can book for a range of travel dates between September and December 2026. This deal features a discount from the original estimate of $773, saving about $91. These fares are basic economy, so check baggage policies and restrictions carefully before booking. The price is attractive for nonstop flights during peak travel seasons, though similar fares often appear around this price point.