International route
Cheap flights from Seoul to San Francisco
Incheon International Airport (ICN) to San Francisco International Airport (SFO). 5,646 miles, 10h 45m nonstop.
ICN to SFO at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 5,646 milesgreat-circle
- Typical flight time
- 10h 45mnonstop, gate to gate
- Nonstop airlines
- ASKEOZ3 airlinesAlaska, Korean Air, Asiana
- Nonstop flights per day
- 3all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Tuesday21% less than Sunday
- Time difference
- 16h behindSan Francisco vs Seoul
Seoul to San Francisco
Round trips from $480
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Jan 19.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSeoul to San Francisco fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Seoul to San Francisco
3 airlines fly nonstop with 3 departures a day combined, plus 12 more with one stop.
- ASAlaska AirlinesoneworldNonstop · 1 flight a day · first checked bag from $35
- OZAsiana AirlinesStar AllianceNonstop · 1 flight a day · first checked bag included
- KEKorean AirSkyTeamNonstop · 1 flight a day · first checked bag included
- ACAir CanadaStar AllianceConnecting via YVR · first checked bag from $35
- AAAmerican AirlinesoneworldConnecting via DFW, ORD, PHX, LAX · first checked bag from $40
- NHANA All Nippon AirwaysStar AllianceConnecting via HND, NRT · first checked bag included
- CXCathay PacificoneworldConnecting via HKG · first checked bag included
- CIChina AirlinesSkyTeamConnecting via TPE · first checked bag included
- DLDelta Air LinesSkyTeamConnecting via MSP, DTW · first checked bag from $35
- BREVA AirStar AllianceConnecting via TPE · first checked bag included
- JLJapan AirlinesoneworldConnecting via HND, NRT, KIX · first checked bag included
- B6JetBlueConnecting via LAX · first checked bag from $40
- PRPhilippine AirlinesConnecting via MNL · first checked bag included
- UAUnited AirlinesStar AllianceConnecting via ORD, DEN, IAH · first checked bag from $40
- VBVivaLow-costConnecting via MTY · first checked bag from $45
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Chicago (ORD)AAUA2 airlines
- Los Angeles (LAX)AAB62 airlines
- Tokyo (HND)JLNH2 airlines
- Tokyo (NRT)JLNH2 airlines
- Taipei (TPE)BRCI2 airlines
Which airport should I use?
SeoulSan Francisco has 3 airports. Fares can differ by $50 to $150 round trip between them, so check the alternatives before you book.
Tips for this route
- Alaska, Korean Air and Asiana all fly ICN to SFO nonstop, so compare the total with bags before picking the lowest base fare: the difference between a basic and a standard economy ticket is often less than one checked bag each way.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $480; September 2026 is the most expensive at $609 and up, a difference of $129 per traveler.
- Departing on a Tuesday averages 21% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- San Francisco is 16 hours behind Seoul. A morning departure lands in San Francisco with most of the day left; an evening flight arrives close to local dinner time.
Destination guide
San Francisco: Fog, hills and the Golden Gate
San Francisco packs cable cars, the Golden Gate Bridge, Alcatraz and world-class food into 49 square miles. SFO is the main gateway; Oakland and San Jose are handy alternatives with lower fares on many routes.
Best time to visit: September and October are the warmest, clearest months. Spring (April–May) is green and mild. Summer fog ('Karl') keeps the coast cool; winter is rainy but inexpensive.
Flying the other way? San Francisco to SeoulFares, airlines and tips for SFO to ICN.Ready to compare live fares?
See every airline on ICN–SFO side by side with bags and seat rules spelled out.
Search Seoul to San FranciscoSeoul to San Francisco: common questions
How long is the flight from Seoul to San Francisco?
A nonstop flight from Seoul (ICN) to San Francisco (SFO) takes about 10h 45m gate to gate, covering 5,646 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from ICN to SFO?
Alaska Airlines, Korean Air and Asiana Airlines operate nonstop flights from Seoul (ICN) to San Francisco (SFO), with 3 nonstop departures a day between them. One-stop options connect through ORD, LAX and HND.
What is the cheapest month to fly from Seoul to San Francisco?
Over the next six months, January 2027 has the lowest round-trip fares from Seoul (ICN) to San Francisco (SFO), starting at $480 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book Seoul to San Francisco flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Seoul and San Francisco?
San Francisco is 16 hours behind Seoul. ICN is on Asia/Seoul time and SFO on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.
More flights from Seoul
All routesMore flights to San Francisco
All routes- New York to San FranciscoJFK → SFOfrom $239
- Chicago to San FranciscoORD → SFOfrom $159
- Los Angeles to San FranciscoLAX → SFOfrom $63
- Seattle to San FranciscoSEA → SFOfrom $80
- Honolulu to San FranciscoHNL → SFOfrom $243
- Vancouver to San FranciscoYVR → SFOfrom $107
- London to San FranciscoLHR → SFOfrom $513
- Paris to San FranciscoCDG → SFOfrom $508