Route · SFO → ICN
Flights from San Francisco to Seoul
San Francisco to Seoul Incheon is one of the busiest transpacific corridors, spanning roughly 9,100 kilometres with a typical block time of just under eleven hours eastbound and closer to twelve or thirteen hours on the return against prevailing headwinds. Korean Air and Asiana Airlines dominate frequency and cabin quality on this pairing, typically operating A380s and B777s respectively, while United and Delta cover it with B777 and B767 equipment as part of their broader Pacific networks; Singapore Airlines and Air India serve it as an onward-connection play rather than a primary point-to-point product. Practically, most departures from San Francisco use the international terminal, and the crossing gains a full calendar day — you leave Monday and land Wednesday, so confirm onward connections carefully. Fares tend to soften in February and early March before cherry-blossom season drives a noticeable spring premium; business-class award availability on Korean Air is often strongest on midweek departures.
We may earn a commission when you book — at no cost to you.
Cheapest dates to fly
Live prices · powered by AviasalesThe calendar below pulls live fares from our search partner for San Francisco (SFO) → Seoul (ICN). Use the year… view to spot the cheapest week to fly, the day-of-week patterns most travellers miss, and any shoulder-season dips worth shifting your trip around. Prices refresh every few hours, so what you see is what your booking page should look like a moment later — click any date to jump straight to the fare on Aviasales.
Airlines on this route
7 carriersThe 7 carriers we currently track on the San Francisco–Seoul route, from full-service flag carriers to low-cost competitors. Tap any airline for its full profile,… baggage rules, fleet context, and a live fare search pre-filtered to that carrier — useful if you're loyal to a frequent-flyer programme, want to compare onboard product on the same dates, or are weighing a cheaper one-stop against a pricier nonstop.
Flights from San Francisco to Seoul
Live schedule · powered by AviasalesBelow is the published weekly schedule for nonstop and one-stop services from San Francisco to Seoul — the actual flight numbers, departure and arrival times… your booking page will pull from. Use it to plan around departure preferences (early morning vs late evening), see which carriers fly on which weekdays, or pick a connection that lets you sleep in your own bed before a long-haul leg. Click any row to load it directly in the search.
Airport guides
Quick links into the airport profiles at both ends of the route. Each guide covers terminal layout, the airlines that base hubs at SFO and… ICN, the other routes those airports serve, and the ground-transit options most travellers wish they'd read about before landing — the practical context you only really need to know once you've booked, but want to skim before you do.