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$349 Cheap Flights from San Francisco (SFO) to Seoul (ICN)

View $349 flight on Fri, Jul 24, 2026Opens in a new window

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

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

Prices were available within the past 7 days and start at $349 for one-way flights and $721 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Aug 24 - Sat, Sep 5
SFO
San Francisco
ICN
Seoul
$721 Roundtrip, just found
$721
Roundtrip
just found
Select United flight, departing Mon, Aug 24 from San Francisco to Seoul, returning Sat, Sep 5, priced at $721 just found
Air Premia
Mon, Aug 24 - Sat, Sep 5
SFO
San Francisco
ICN
Seoul
$721 Roundtrip, just found
$721
Roundtrip
just found
Select Air Premia flight, departing Mon, Aug 24 from San Francisco to Seoul, returning Sat, Sep 5, priced at $721 just found
United
Wed, Nov 11 - Sat, Nov 21
SFO
San Francisco
ICN
Seoul
$726 Roundtrip, found 1 hour ago
$726
Roundtrip
found 1 hour ago
Select United flight, departing Wed, Nov 11 from San Francisco to Seoul, returning Sat, Nov 21, priced at $726 found 1 hour ago
Philippine Airlines
Tue, Mar 2 - Sat, Mar 20
SFO
San Francisco
ICN
Seoul
$838 Roundtrip, found 22 hours ago
$838
Roundtrip
found 22 hours ago
Select Philippine Airlines flight, departing Tue, Mar 2 from San Francisco to Seoul, returning Sat, Mar 20, priced at $838 found 22 hours ago
WestJet
Tue, Aug 18 - Fri, Sep 25
SFO
San Francisco
ICN
Seoul
$882 Roundtrip, found 4 hours ago
$882
Roundtrip
found 4 hours ago
Select WestJet flight, departing Tue, Aug 18 from San Francisco to Seoul, returning Fri, Sep 25, priced at $882 found 4 hours ago
China Eastern Airlines
Thu, Sep 24 - Sun, Oct 11
SFO
San Francisco
ICN
Seoul
$885 Roundtrip, found 1 hour ago
$885
Roundtrip
found 1 hour ago
Select China Eastern Airlines flight, departing Thu, Sep 24 from San Francisco to Seoul, returning Sun, Oct 11, priced at $885 found 1 hour ago
Korean Air
Mon, Aug 24 - Sat, Sep 5
SFO
San Francisco
ICN
Seoul
$923 Roundtrip, just found
$923
Roundtrip
just found
Select Korean Air flight, departing Mon, Aug 24 from San Francisco to Seoul, returning Sat, Sep 5, priced at $923 just found
Delta
Mon, Aug 24 - Sat, Sep 5
SFO
San Francisco
ICN
Seoul
$936 Roundtrip, just found
$936
Roundtrip
just found
Select Delta flight, departing Mon, Aug 24 from San Francisco to Seoul, returning Sat, Sep 5, priced at $936 just found
Alaska Airlines
Mon, Aug 24 - Sat, Sep 5
SFO
San Francisco
ICN
Seoul
$936 Roundtrip, just found
$936
Roundtrip
just found
Select Alaska Airlines flight, departing Mon, Aug 24 from San Francisco to Seoul, returning Sat, Sep 5, priced at $936 just found
Air Canada
Sun, Nov 15 - Mon, Nov 30
SFO
San Francisco
ICN
Seoul
$951 Roundtrip, just found
$951
Roundtrip
just found
Select Air Canada flight, departing Sun, Nov 15 from San Francisco to Seoul, returning Mon, Nov 30, priced at $951 just found

Alternative airports near Seoul

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Gimpo Intl. GMP. Closest option available. Average driving time to city center is 20 minutes. Flights from $2,421
GMP
Gimpo Intl.
Closest
Average driving time to city center20 min
Flights from $2,421

Frequently asked questions

How much does a flight from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) cost?
You can find cheap one-way flights from $349 and cheap return flights from $721 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) with Expedia. One-way flights usually range from $469 to $4371, and return flights typically cost between $907 and $7466. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
The cheapest month to fly from SFO to ICN is August when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you're able to. Use the calendar view in your search to see which months have low fares on this route.
Which airlines fly direct from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
4 airlines operate nonstop service from SFO to ICN:

  • United operates around 14 direct flights from SFO to ICN every week
  • Asiana Airlines operates around 7 direct flights from SFO to ICN every week
  • Korean Air operates around 7 direct flights from SFO to ICN every week
  • Aero Lloyd operates around 7 direct flights from SFO to ICN every week

What is the cheapest airline that flies from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
EVA Airways is one of the cheapest airlines offering connecting flights from San Francisco, CA (SFO) to Seoul (ICN), with round-trip tickets starting from around $889. Use Expedia's search tool to compare the prices and schedules of airlines that fly this route to find the best option for your plans and budget.*Prices based on flights available on Expedia in the last year.
How do I find cheap flights from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
To find a cheap flight from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
The best airline to fly with from San Francisco (SFO) to Seoul (ICN) will differ from traveler to traveler. If you like to fly early, Korean Air offers early morning flights. If price is the most important factor, Aero Lloyd typically offers the lowest fares. United offers the most daily flights from SFO to ICN, 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
On average, there are around 5 nonstop flights per day from San Francisco Intl. (SFO) to Incheon Intl. (ICN). For more options, look at flights that include layovers.
What is the earliest flight from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
The earliest flight from San Francisco International Airport (SFO) to Incheon International Airport (ICN) typically leaves at around 12:05 AM, operated by Cathay Pacific and Air China. This seasonal service is active in August, giving you a great opportunity to start your journey to South Korea early. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
The most popular departure times for flights from San Francisco International Airport (SFO) to Incheon International Airport (ICN) are in the late evening, from 9pm to midnight. About 21% of passengers prefer this time window. Many major carriers, including Cathay Pacific, United, and Asiana Airlines, offer flights during this window. This timing works well because it allows you to enjoy a full day in San Francisco before your flight.
How long does it take to fly from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
Flying nonstop from SFO to ICN takes around 13 hours, with the route covering approximately 5,646 miles. Flights with a layover typically take 4 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
You can fly business class between SFO and ICN. Airlines that offer business class service on this route include:

  • Cathay Pacific
  • Singapore Airlines
  • Korean Air
  • Air Canada
  • EVA Airways
  • United Airlines
  • Asiana Airlines
  • China Airlines
  • All Nippon Airways
  • Emirates

First class cabins are available on:

  • Emirates
  • American Airlines
  • Delta Air Lines
  • Korean Air
  • British Airways

How much is a business class flight from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
A direct, return business class ticket from San Francisco (SFO) to Seoul (ICN) typically costs between $6,431 - $11,457. A non-stop, one-way business class flight is usually around $3,762 - $8,239. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) if you opt for a connecting flight.*Prices based on flights available on Expedia in the last year.
How do I earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) flight with Expedia?
It's easy to earn miles on a San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon 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 Seoul from San Francisco Intl. (SFO)?
When traveling from San Francisco Intl. (SFO) to Seoul, you can fly into Gimpo Intl. (GMP) and Incheon Intl. (ICN). Some flights may connect through major hubs like Los Angeles Intl. (LAX), Vancouver Intl. (YVR), Dallas-Fort Worth Intl. (DFW) before reaching Seoul. 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) at the last minute?
Typically, booking a last minute flight from San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) flight and hotel package?
Securing a San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.) Incheon Vacation Packages 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 San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon Intl.)?
If you booked your San Francisco, CA (SFO-San Francisco Intl.) to Seoul (ICN-Incheon 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
San Francisco Intl.
Destination airport
Incheon Intl.
Airlines serving
Aeromexico, Air Canada, Air China, Air Premia, Alaska Airlines, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, China Eastern Airlines, China Southern Airlines, Delta, EVA Airways, Korean Air, Philippine Airlines, Singapore Airlines, United, Vietnam Airlines, WestJet
Roundtrip price
$721
Distance
5645 mi
Average flight time
28 hours 35 mins

Book with confidence

San Francisco to Seoul Flights

The cheapest times to fly from San Francisco to Seoul

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from San Francisco to Seoul are during the month of August. You can find some of the cheapest flights from San Francisco to Seoul with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from San Francisco to Seoul

Sunday is one of the best days to book for cheap flights from San Francisco to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from San Francisco to Seoul

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from San Francisco to Seoul in 2026. You can also book with separate airlines for your outbound and return journeys, from $349 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap San Francisco to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your San Francisco to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

San Francisco to Seoul Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

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