£352 Cheap Flights from Seoul (ICN) to San Francisco (SFO)

View £352 flight on Fri, 15 May 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to San Francisco International Airport (SFO)

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

Prices were available within the past 7 days and start at £352 for one-way flights and £530 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Thu, 15 Oct - Wed, 21 Oct
ICN
Seoul
SFO
San Francisco
£530 Return, found 3 days ago
£530
Return
found 3 days ago
Select Air Canada flight, departing Thu, 15 Oct from Seoul to San Francisco, returning Wed, 21 Oct, priced at £530 found 3 days ago
United
Wed, 2 Dec - Sun, 6 Dec
ICN
Seoul
SFO
San Francisco
£586 Return, found 13 hours ago
£586
Return
found 13 hours ago
Select United flight, departing Wed, 2 Dec from Seoul to San Francisco, returning Sun, 6 Dec, priced at £586 found 13 hours ago
Alaska Airlines
Thu, 14 Jan - Thu, 21 Jan
ICN
Seoul
SFO
San Francisco
£614 Return, found 2 days ago
£614
Return
found 2 days ago
Select Alaska Airlines flight, departing Thu, 14 Jan from Seoul to San Francisco, returning Thu, 21 Jan, priced at £614 found 2 days ago
Asiana Airlines
Wed, 2 Dec - Sun, 6 Dec
ICN
Seoul
SFO
San Francisco
£621 Return, found 13 hours ago
£621
Return
found 13 hours ago
Select Asiana Airlines flight, departing Wed, 2 Dec from Seoul to San Francisco, returning Sun, 6 Dec, priced at £621 found 13 hours ago
Korean Air
Wed, 2 Dec - Sun, 6 Dec
ICN
Seoul
SFO
San Francisco
£646 Return, found 13 hours ago
£646
Return
found 13 hours ago
Select Korean Air flight, departing Wed, 2 Dec from Seoul to San Francisco, returning Sun, 6 Dec, priced at £646 found 13 hours ago
Delta
Wed, 2 Dec - Sun, 6 Dec
ICN
Seoul
SFO
San Francisco
£646 Return, found 13 hours ago
£646
Return
found 13 hours ago
Select Delta flight, departing Wed, 2 Dec from Seoul to San Francisco, returning Sun, 6 Dec, priced at £646 found 13 hours ago
Singapore Airlines
Mon, 12 Oct - Sat, 17 Oct
ICN
Seoul
SFO
San Francisco
£754 Return, found 1 day ago
£754
Return
found 1 day ago
Select Singapore Airlines flight, departing Mon, 12 Oct from Seoul to San Francisco, returning Sat, 17 Oct, priced at £754 found 1 day ago
China Airlines
Wed, 2 Dec - Sun, 6 Dec
ICN
Seoul
SFO
San Francisco
£838 Return, found 13 hours ago
£838
Return
found 13 hours ago
Select China Airlines flight, departing Wed, 2 Dec from Seoul to San Francisco, returning Sun, 6 Dec, priced at £838 found 13 hours ago
EVA Airways
Wed, 3 Jun - Wed, 24 Jun
ICN
Seoul
SFO
San Francisco
£876 Return, found 9 hours ago
£876
Return
found 9 hours ago
Select EVA Airways flight, departing Wed, 3 Jun from Seoul to San Francisco, returning Wed, 24 Jun, priced at £876 found 9 hours ago
Air India
Wed, 3 Jun - Wed, 24 Jun
ICN
Seoul
SFO
San Francisco
£888 Return, found 9 hours ago
£888
Return
found 9 hours ago
Select Air India flight, departing Wed, 3 Jun from Seoul to San Francisco, returning Wed, 24 Jun, priced at £888 found 9 hours ago

Find the cheapest month to fly from Seoul (ICN) to San Francisco (SFO)

October is typically the cheapest month to fly

From £322 - £669 per traveller.

Frequently asked questions

Which airlines fly direct from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Enter ICN to SFO and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
To find a cheap flight from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The best airline to fly with from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will differ from traveler to traveler. If you like to fly early, UA offers early morning flights. If price is the most important factor, YP typically offers the lowest fares. KE offers the most daily flights from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
There are approximately 5 nonstop flights per day from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.). For even more choice, look at flights that include layovers, as you'll find around 120 connecting flights per day. Some common connection points include Vancouver Intl. (YVR), Hong Kong Intl. (HKG), and Narita Intl. (NRT).
What is the earliest flight from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The earliest flight from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) typically departs at approximately 12:10 AM local time, operated by TK. This is a seasonal service active in January and March. An early departure like this can help maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
You'll typically find the most flights from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) on a Wednesday, with around 54 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include Korean Air, Asiana Airlines, and Jeju Air. Flight schedules are consistent throughout the week.
What are the most popular departure times for flights from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
The most popular departure times for flights from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) are in the evening, from 6pm to 9pm. About 37% of passengers prefer this time. Many major carriers, including Delta Air Lines, Korean Air and Cathay Pacific, offer flights during this window. This timing works well because it allows you to finish your day in Seoul and arrive in San Francisco ready to start your day.
How long does it take to fly from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Flying nonstop from ICN to SFO takes around 10 hours 30 minutes, with the route covering approximately 5,646 miles. Flights with a layover typically take 6 hours 20 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
Select the "Business class" and "First class" filters when looking for ICN to SFO flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight with Expedia?
It's easy to earn miles on a Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for San Francisco from Incheon Intl. (ICN)?
If you're planning to travel to San Francisco from Incheon Intl. (ICN), you can fly directly into San Francisco Intl. (SFO) Some flights may connect through major hubs like Capital Intl. (PEK), Dubai Intl. (DXB), Narita Intl. (NRT) before reaching San Francisco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) at the last minute?
Typically, booking a last minute flight from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package?
Securing a Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.)?
If you booked your Seoul (ICN-Incheon Intl.) to San Francisco, CA (SFO-San Francisco Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Incheon Intl.
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Air China, Air India, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, China Southern Airlines, Delta, EVA Airways, Japan Airlines, Korean Air, Philippine Airlines, Qatar Airways, Singapore Airlines, United, Vietnam Airlines, WestJet
Return price
£530
Distance
9032 km
Average flight time
-5 hours -16 mins

Book with confidence

Compare flights from Seoul to San Francisco easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Seoul to San Francisco. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to San Francisco Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Incheon Intl. to San Francisco Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Incheon Intl. (ICN) to San Francisco Intl. (SFO)

The easiest way to view the best deals on flights from Seoul to San Francisco today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Incheon Intl. to San Francisco Intl. start at just £530 and range up to £888.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Seoul and San Francisco
  • booking your flight during October, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Seoul to San Francisco flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Incheon Intl. to San Francisco Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Compare flights from Seoul to San Francisco easily and book with confidence

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*Available to Expedia members.