Book 6-8 weeks ahead for the best fares on the SFO to ICN route.
Tuesday and Wednesday departures are typically 15-20% cheaper.
This is a long-haul flight (~10h 41m). Consider comfort upgrades or stopover options.
Compare 5 airlines on this route: AI, KE, OZ, UA, YP.
Check visa requirements for your destination well in advance.

Route details All flights from SFO All flights from ICN