SFO - SEL

$326 Find Cheap Flights from San Francisco to Seoul - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Seoul departing on 9/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$687
Typical prices: $663-$925
AIR PREMIA
Sun 10/4Fri 10/30
SFO - ICN • Non-stop
Cheapest non-stop
$687
Typical prices: $663-$920
AIR PREMIA
Sun 10/4Wed 10/28
SFO - ICN • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts and KAYAK users. AI can make mistakes.
AIR PREMIA economy offers 33-35 inches of legroom, more than most airlines.
United Economy Plus and Asiana Economy Smartium add extra legroom on this route.
Expert advice
Expert advice
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Expert advice
Expert advice
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Top layover airports
Cheapest • Avg $687 (round-trip)
Shortest trip • 16h 38m (one-way)
Insights
Insights
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Insights
Top routes
Cheapest
Most popular
Insights
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Insights
Insights
When to travel
Cheapest • 21% price drop
Most popular
Good to know
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Flight Deals
Booking Insights
Expert advice
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Seoul that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Seoul

Sun, Oct 4 - Fri, Oct 30
AIR PREMIA Logo
5:00 pm - 9:40 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
7:45 pm - 2:20 pm
ICN
-
SFO
10h 35mnonstop
$687AIR PREMIA
Sun, Oct 4 - Mon, Nov 2
AIR PREMIA Logo
5:00 pm - 9:40 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
7:45 pm - 1:20 pm
ICN
-
SFO
10h 35mnonstop
$687AIR PREMIA
Wed, Sep 2 - Tue, Sep 15
Air China Logo
1:00 pm - 10:00 pm
SFO
-
ICN
17h 00m
1 stop
Air China Logo
1:05 pm - 10:30 am
ICN
-
SFO
37h 25m
1 stop
$691Air China
Mon, Sep 14 - Mon, Nov 9
China Southern Logo
12:35 am - 1:55 pm
SFO
-
ICN
45h 20m
2 stops
China Southern Logo
10:55 am - 7:40 pm
ICN
-
SFO
25h 45m
2 stops
$692China Southern
Sun, Sep 6 - Sun, Sep 27
United Airlines Logo
11:55 pm - 4:20 am
SFO
-
ICN
12h 25mnonstop
United Airlines Logo
11:30 am - 6:10 am
ICN
-
SFO
10h 40mnonstop
$719United Airlines
Wed, Aug 26 - Mon, Sep 14
United Airlines Logo
10:40 am - 3:00 pm
SFO
-
ICN
12h 20mnonstop
United Airlines Logo
4:50 pm - 11:40 am
ICN
-
SFO
10h 50mnonstop
$721United Airlines
Sun, Sep 13 - Sun, Sep 27
Asiana Airlines Logo
11:45 pm - 4:20 am
SFO
-
ICN
12h 35mnonstop
Asiana Airlines Logo
4:50 pm - 11:40 am
ICN
-
SFO
10h 50mnonstop
$722Asiana Airlines
Thu, Aug 27 - Thu, Sep 3
Asiana Airlines Logo
11:55 pm - 4:20 am
SFO
-
ICN
12h 25mnonstop
Asiana Airlines Logo
11:30 am - 6:30 am
ICN
-
SFO
11h 00mnonstop
$722Asiana Airlines
Fri, Aug 21 - Sun, Aug 23
Korean Air Logo
1:10 pm - 5:20 pm
SFO
-
ICN
12h 10mnonstop
Korean Air Logo
4:00 pm - 11:00 am
ICN
-
SFO
11h 00mnonstop
$813Korean Air
Sat, Sep 5 - Wed, Sep 16
Korean Air Logo
4:55 pm - 4:40 am
SFO
-
ICN
19h 45m
1 stop
Korean Air Logo
4:00 pm - 10:40 am
ICN
-
SFO
10h 40mnonstop
$814Korean Air
Booking Insights

KAYAK's insights & trends for San Francisco to Seoul flights

Get data-powered insights and trends into flights from San Francisco to Seoul to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from San Francisco to Seoul?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from San Francisco to Seoul departing in October.

Flight prices are typical for this route right now.

Flights to Seoul from San Francisco usually cost between $676 and $862 in October.
The lowest price found in the past 5 days was $687 on AIR PREMIA (Oct 4-Nov 1).

What is the cheapest San Francisco to Seoul flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest return flight from San Francisco to Seoul costs $682 on the route between San Francisco (SFO) and Incheon Intl Airport (ICN). It is also the most popular route.

What’s the cheapest day of the week to fly from San Francisco to Seoul?

The average price of all round-trip flights from San Francisco to Seoul clicked on KAYAK for each day over the last 12 months.

For San Francisco to Seoul, Monday is the cheapest day to fly on average and Saturday is the most expensive. Flying from Seoul back to San Francisco, the best deals are generally found on Wednesday, with Friday being the most expensive.

What is the cheapest month to fly from San Francisco to Seoul?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to Seoul, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from San Francisco to Seoul is February, where tickets cost $695 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $1,387 and $1,127 respectively.

Can I save money by flying with a layover from San Francisco to Seoul?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $742, prices are generally cheapest when you fly direct.

How far in advance should I book a flight from San Francisco to Seoul?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from San Francisco to Seoul, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from San Francisco to Seoul, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Expert advice

Expert advice for your flight from San Francisco to Seoul

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
John Walton

John Walton

Expert on AIR PREMIA and Asiana Airlines

Independent aviation journalist John Walton took his first flight at eight weeks old and hasn’t stopped travelling since. A world-renowned expert in airlines and the passenger experience, he writes in depth on aviation, is a resident expert on travel in Japan and France, and offers a uniquely queer perspective on travelling the world.

Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Robert Schrader

Robert Schrader

Expert on Korean Air and ICN

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Good to know

Low season

January

Cheapest flight

$326
Best time to beat the crowds with an average 18% drop in price.
Most popular time to fly and prices are also 14% lower on average.
Flight from San Francisco to Seoul Incheon Airport

When to book flights from San Francisco to Seoul

Are your dates flexible? Find out the best times to travel from San Francisco to Seoul based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

Flights from San Francisco to Seoul: the best tips from KAYAK users' own experiences

Insights shared by verified travelers who flew the route from San Francisco to Seoul 
Verified travelerFlew with Asiana Airlines
SFO
-
ICN
Mar 2026
Walk straight to arrivals upon getting to Incheon, and take their airport bus route if convenient.
DexterFlew with Asiana Airlines
SFO
-
ICN
Feb 2026
If traveling with toddlers or picky eaters, make sure you feed or buy food your kids will eat. Leaving San Francisco my kids didn’t eat any of the food coming from the SFO airport.

FAQs for booking flights from San Francisco to Seoul

  • What are the pet policies of Korean Air for passengers flying from San Francisco to Seoul?

    Korean Air has specific pet policies for passengers flying from San Francisco to Seoul. They allow pets to be transported as checked baggage or as cargo. For checked baggage, the maximum weight limit for pets and carriers combined is generally 70 lbs.

  • What are the public transportation options available from Incheon International Airport to the city center of Seoul?

    From Incheon International Airport, several public transportation options are available to reach the city center of Seoul. These include the Airport Railroad Express (AREX), which provides direct train service to major city destinations, and the airport limousine buses that offer convenient and affordable transportation to various locations within Seoul. Taxis and ride-hailing services are also available for a more personalized and convenient option.

  • What are the specific baggage policies for passengers traveling from San Francisco to Seoul on Korean Air?

    Korean Air's baggage policies for passengers flying from San Francisco to Seoul typically include a checked baggage allowance based on the ticket class. For most economy class passengers, the allowance is one checked bag weighing up to 50 lbs. Business class passengers usually have an allowance of two checked bags, each weighing up to 70 lbs.

  • What entertainment options does Korean Air have for passengers flying from San Francisco to Seoul?

    Korean Air offers a range of entertainment options for passengers flying from San Francisco to Seoul. Travelers can enjoy a wide selection of movies, TV shows, and music through the in-flight entertainment system. The system includes individual seat screens with a user-friendly interface. Additionally, Korean Air provides an assortment of gaming options to keep passengers entertained during the flight.

  • What is the cheapest flight from San Francisco to Seoul?

    In the last 5 days, the lowest price for a flight from San Francisco to Seoul was $326 for a one-way ticket and $687 for a round-trip.

  • Do I need a passport to fly between San Francisco and Seoul?

    Yes

  • Which airports will I be using when flying from San Francisco to Seoul?

    San Francisco is served by only 1 airport and there are 2 airports in Seoul. You will leave San Francisco from San Francisco and you will be arriving in Seoul at one of these airports: Seoul Gimpo Intl or Incheon Intl.

  • Which airlines offer Wi-Fi service onboard planes from San Francisco to Seoul?

    Only Asiana Airlines offers inflight Wi-Fi service on the San Francisco to Seoul flight route.

  • Which aircraft models fly most regularly from San Francisco to Seoul?

    The Boeing 787-9 Dreamliner is the aircraft model that flies most regularly on the San Francisco to Seoul flight route.

  • Which airline alliances offer flights from San Francisco to Seoul?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between San Francisco and Seoul, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from San Francisco to Seoul?

    There are nonstop flights from San Francisco to Seoul on a daily basis.

  • Which is the best airline for flights from San Francisco to Seoul, Korean Air or Japan Airlines?

    The two airlines most popular with KAYAK users for flights from San Francisco to Seoul are Korean Air and Japan Airlines. With an average price for the route of $980 and an overall rating of 8.4, Korean Air is the most popular choice. Japan Airlines is also a great choice for the route, with an average price of $659 and an overall rating of 8.3.

  • How does KAYAK find such low prices on flights from San Francisco to Seoul?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Seoul.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Seoul?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seoul from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Seoul?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seoul with an airline and back to San Francisco with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Seoul?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seoul from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from San Francisco to Seoul

  • Looking for a cheap flight? 25% of our users found flights on this route for $348 or less one-way and $719 or less round-trip.
  • Common layover destinations for flights from San Francisco to Seoul depend on the airline and routing. For example, Korean Air often has layovers in its hub at Incheon International Airport, Tokyo, Beijing, or Hong Kong.
  • Both San Francisco International Airport (SFO) and Incheon International Airport (ICN) have disability policies in place to assist passengers with disabilities. These policies may include wheelchair assistance, accessible facilities, designated assistance points, and trained staff to provide support and guidance. Passengers with disabilities are encouraged to contact the airports in advance to arrange for any necessary assistance and to ensure a smooth travel experience.
  • San Francisco International Airport (SFO) offers several lounges for passengers flying from San Francisco to Seoul. Some of the notable lounges include the United Polaris Lounge, which provides an upscale and luxurious environment for United Airlines' business and first-class passengers. The Cathay Pacific Lounge offers a comfortable setting with a variety of amenities.
  • U.S. citizens traveling from San Francisco to Seoul typically require a valid passport and a visa to enter South Korea. The type of visa and application process may vary based on the purpose and duration of the trip.
  • Delta Air Lines has specific policies in place for children traveling on flights from San Francisco to Seoul. Infants under the age of two can travel on an adult's lap or have the option to purchase a separate seat with a child fare. Delta also offers discounted fares for children between the ages of 2 and 11.

Everything you need to know for your flight from San Francisco to Seoul

Information on your arrival and departure airports