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Cheap Flights from Seoul (ICN) to San Francisco (SFO)

Compare Incheon International to San Francisco International flight deals

Find the cheapest month or even day of the year to fly to San Francisco International

Book the best San Francisco International fare with no extra fees

Flight deals from Incheon International to San Francisco International

Looking for a cheap last-minute deal or the best return flight from Incheon International to San Francisco International? Find the lowest prices on one-way and return tickets right here.
San Francisco.$580 per passenger.Departing Thu, 18 Sep, returning Wed, 24 Sep.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Thu, 18 Sep, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Wed, 24 Sep, arriving in Incheon International.Price includes taxes and charges.From $580, select.
San Francisco.$611 per passenger.Departing Wed, 11 Feb, returning Wed, 1 Apr.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Wed, 11 Feb, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Wed, 1 Apr, arriving in Incheon International.Price includes taxes and charges.From $611, select.
San Francisco.$611 per passenger.Departing Wed, 11 Feb, returning Thu, 26 Mar.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Wed, 11 Feb, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Thu, 26 Mar, arriving in Incheon International.Price includes taxes and charges.From $611, select.
San Francisco.$611 per passenger.Departing Thu, 29 Jan, returning Thu, 12 Feb.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Thu, 29 Jan, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Thu, 12 Feb, arriving in Incheon International.Price includes taxes and charges.From $611, select.
San Francisco.$613 per passenger.Departing Wed, 8 Oct, returning Wed, 29 Oct.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Wed, 8 Oct, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Wed, 29 Oct, arriving in Incheon International.Price includes taxes and charges.From $613, select.
San Francisco.$613 per passenger.Departing Thu, 9 Oct, returning Mon, 24 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Thu, 9 Oct, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Mon, 24 Nov, arriving in Incheon International.Price includes taxes and charges.From $613, select.
San Francisco.$613 per passenger.Departing Fri, 21 Nov, returning Thu, 27 Nov.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Fri, 21 Nov, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Thu, 27 Nov, arriving in Incheon International.Price includes taxes and charges.From $613, select.
San Francisco.$614 per passenger.Departing Fri, 12 Dec, returning Tue, 30 Dec.Return flight with Air Canada.Outbound indirect flight with Air Canada, departs from Incheon International on Fri, 12 Dec, arriving in San Francisco International.Inbound indirect flight with Air Canada, departs from San Francisco International on Tue, 30 Dec, arriving in Incheon International.Price includes taxes and charges.From $614, select.

Find the cheapest month to fly from Incheon International to San Francisco International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Incheon International to San Francisco International flights are currently cheapest in September.
Jul
from $1,055
Aug
from $928
Sep
from $580
Oct
from $613
Nov
from $613
Dec
from $614
Jan
from $726
Feb
from $654
Mar
from $871
Apr
from $925
May
from $901
Jun
from $1,018

Direct flights from Incheon International to San Francisco International

Incheon International to San Francisco International: Alternative routes

Compare routes from Incheon International to San Francisco below. You may find an airport to fly into that's cheaper, faster, or easier than San Francisco International.

Seoul to San Francisco: Flight information

The things to know before you go.
Cheapest flight found$580
Cheapest month to flySeptember
Average flight time10 hrs, 41 mins
Most popular airlineAsiana Airlines
Average flights per week56

Finding cheap flights from Incheon International to San Francisco International: Frequently asked questions

The best price we found for a return flight from Incheon International to San Francisco International is $580. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
10 hours and 41 minutes is the average flight time from Incheon International to San Francisco International.
Asiana Airlines, United and Delta fly direct from Incheon International to San Francisco International.
As of July 2025, there are 56 flights per week flying from Incheon International to San Francisco International.
The cheapest month to fly from Incheon International to San Francisco International is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Incheon International Airport to San Francisco International Airport on Thursday, 18 September 2025.
Yes – the average flight time is 10 hours and 41 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Francisco International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Francisco is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Air Canada and Air Premia offer the cheapest flight tickets to San Francisco International.

Travelling from Incheon International Airport (ICN) to San Francisco International Airport (SFO): what you need to know

  • The average duration of a direct flight from Incheon International Airport to San Francisco International Airport is 10 hours 40 minutes.

  • San Francisco is 16 hours behind Seoul and observes the UTC-7 timezone.

  • You can choose from 45 weekly Incheon International Airport to San Francisco International Airport flights. The 11:30 departure with United Airlines is the earliest flight available. Asiana Airlines operates the last service of the day at 20:50.

  • Your ICN to SFO flight won't wait if you're running late, so don't forget to check in on time. Arrive up to one hour in advance for domestic flights and two hours ahead when you're flying internationally.

  • During popular months such as July, it's best to get to the airport even earlier. Plan to arrive two hours before domestic departures and four hours ahead of international flights whenever you're flying during a high season in general.

  • With direct flights from Incheon International Airport to San Francisco International Airport operated by a number of airlines, flying to San Francisco (and then other parts of United States) is a breeze. You can travel nonstop with these carriers:

  • Most travellers choose to fly with Korean Air on this route.

  • Asiana Airlines is the most punctual carrier operating ICN to SFO flights, with 66.35% of its services landing on schedule.

  • We make it simple to book a flight with a stopover. To see your options for tickets from Incheon International Airport to San Francisco International Airport, deselect 'Direct flights only.' Then, choose a flight that has a stop long enough to tour your chosen city. Top stopovers between ICN and SFO include:

    • Hong Kong International Airport

    • Narita International Airport

    • Kansai International Airport

How to find the cheapest flights from Incheon International Airport (ICN) to San Francisco International Airport (SFO)

  • $529 is the lowest price for a one-way Incheon International Airport to San Francisco International Airport flight. Return flights start from $580. These fares can change based on demand and availability.

  • Get cheap tickets from ICN to SFO by booking five months ahead. Based on our research, that's the sweet spot for bagging a bargain.

  • The cheapest month for flights from Incheon International Airport to San Francisco International Airport is April. Use the 'Whole month' tool to see the lowest airfares if you have flexible travel dates.

  • Spend less time searching for cheap flights from ICN to SFO by creating a Price Alert. We'll send you an email or notification through the app when a special offer becomes available.

  • Choose your preferred departure and arrival times, number of stops and airlines with the filters. Alternatively, sort your results by 'Cheapest' to find the best deals on flights from Incheon International Airport to San Francisco International Airport.

Handy information about Incheon International Airport (ICN)

  • Of all flights leaving Incheon International Airport, 54.5% land on time at their destination.

  • The journey from the centre of Seoul to Incheon International Airport is about 48 kilometres. Check out travel apps like Google Maps for the quickest route, whether in your own car or with public transport.

  • Expect a trip time of around 1 hour 45 minutes when using public transport.

  • Taking an early flight from Incheon International Airport to San Francisco International Airport? Avoid the stress of rushing to the terminal (and catch some extra z's) by choosing one of these hotels near ICN:

Arriving at San Francisco International Airport (SFO)

Getting from San Francisco International Airport (SFO) to central San Francisco

  • San Francisco International Airport is roughly 21 kilometres from central San Francisco. Driving there takes about 20 minutes.

  • When travelling on public transport, expect a journey time of about 45 minutes.

When to fly to San Francisco International Airport (SFO)

  • It's time to pick your trip dates for your flight from Incheon International Airport to San Francisco International Airport. August is the busiest month to visit San Francisco. If you want a more relaxed vibe, go in February.

  • Before locking in your flight from Incheon International Airport to San Francisco International Airport, consider the kind of weather you like. September is the warmest month in San Francisco, with temperatures ranging from 12ºC (54ºF) to 22ºC (72ºF).

  • If you want cooler conditions, look for a cheap ticket from ICN to SFO in January. Temperatures average between 6ºC (43ºF) and 16ºC (61ºF) then.

Explore more of United States

  • San Francisco is always a good idea, but there are so many other parts of United States you'll want to see. Around 64 kilometres south-east of San Francisco, a visit to San Jose will keep your itinerary packed. Start with leading attractions like Winchester Mystery House, Rosicrucian Egyptian Museum and San Jose Museum of Art.

  • Fresno is another sought-after destination in United States and is around 257 kilometres south-east of San Francisco. No journey is complete without seeing Forestiere Underground Gardens, Fresno Chaffee Zoo and Shinzen Japanese Garden.

Plan the rest of your trip from Seoul to San Francisco

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.