SFO - SEL

$435 Find Cheap Flights from San Francisco to Seoul

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 9/23. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seoul

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Seoul.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Seoul.
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Everything you should know

Cheapest round-trip
$777
Typical prices: $1,337-$711
China Eastern
to. 11/26fr. 12/11
SFO - ICN • 2 stops
Cheapest non-stop
$777
Typical prices: $861-$661
AIR PREMIA
on. 8/12ma. 8/24
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 airlines
Cheapest • from $777 (round-trip)
Best reviews • 8.4 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Top layover airports
Cheapest • Avg $675 (round-trip)
Shortest trip • 16h 38m (one-way)
Insights
Insights
Insights
Insights
Top routes
Cheapest
Most popular
Insights
Insights
Insights
Insights
When to travel
Cheapest • 45% price drop
Most popular
Good to know
Good to know
+1
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Good to know
Good to know
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Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Seoul!
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

to., nov. 26 - fr., des. 11
China Eastern Logo
12:00 pm - 11:00 am
SFO
-
ICN
30h 00m
2 stops
China Eastern Logo
4:10 pm - 9:00 am
ICN
-
SFO
33h 50m
1 stop
$777China Eastern
on., sep. 2 - sø., sep. 13
United Airlines Logo
10:40 am - 3:00 pm
SFO
-
ICN
12h 20mnonstop
United Airlines Logo
5:15 pm - 9:15 pm
ICN
-
SFO
44h 00m
1 stop
$778United Airlines
ti., jul. 28 - fr., aug. 28
Asiana Airlines Logo
11:55 pm - 4:20 am
SFO
-
ICN
12h 25mnonstop
Asiana Airlines Logo
4:50 pm - 12:00 pm
ICN
-
SFO
11h 10mnonstop
$781Asiana Airlines
lø., sep. 5 - lø., sep. 12
United Airlines Logo
11:59 pm - 3:20 pm
SFO
-
ICN
23h 21m
1 stop
United Airlines Logo
5:15 pm - 10:18 am
ICN
-
SFO
33h 03m
1 stop
$783United Airlines
to., nov. 26 - to., des. 10
China Eastern Logo
12:00 pm - 11:00 am
SFO
-
ICN
30h 00m
2 stops
China Eastern Logo
1:15 pm - 9:00 am
ICN
-
SFO
60h 45m
2 stops
$785China Eastern
fr., jun. 19 - to., jun. 25
United Airlines Logo
11:55 pm - 4:20 am
SFO
-
ICN
12h 25mnonstop
United Airlines Logo
4:50 pm - 12:00 pm
ICN
-
SFO
11h 10mnonstop
$791United Airlines
lø., okt. 17 - lø., okt. 31
AIR PREMIA Logo
3:30 pm - 8:10 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:55 pm - 1:30 pm
ICN
-
SFO
10h 35mnonstop
$794AIR PREMIA
lø., sep. 5 - lø., okt. 31
AIR PREMIA Logo
3:30 pm - 8:10 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:55 pm - 1:30 pm
ICN
-
SFO
10h 35mnonstop
$796AIR PREMIA
on., jul. 15 - to., jul. 23
Multiple Airlines Logo
6:00 am - 10:25 pm
SFO
-
GMP
24h 25m
2 stops
Multiple Airlines Logo
8:10 am - 6:32 pm
GMP
-
SFO
26h 22m
2 stops
$1,011Multiple Airlines
on., jul. 8 - ma., jul. 20
Multiple Airlines Logo
6:00 am - 10:25 pm
SFO
-
GMP
24h 25m
2 stops
Multiple Airlines Logo
8:10 am - 3:22 pm
GMP
-
SFO
23h 12m
2 stops
$1,018Multiple Airlines
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 November.

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 $753 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 Friday is the most expensive. Flying from Seoul back to San Francisco, the best deals are generally found on Tuesday, 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 January, where tickets cost $596 (return) on average. On the other hand, the most expensive months are July and December, where the average cost of round-trip tickets is $2,140 and $1,749 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 $875, 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 2 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 seasonJanuary
Cheapest flight$435
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly and prices are also 11% 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 $435 for a one-way ticket and $777 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?

    Asiana Airlines, and American Airlines offer 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 $970 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 $656 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 $559 or less one-way and $839 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.

Reviews of the top 5 airlines serving from San Francisco to Seoul

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Seoul. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from San Francisco to Seoul? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.4
Korean AirOverall score based on 1218 reviews
8.7Crew
8.2Entertainment
8.3Comfort
8.1Food
8.5Boarding
Airline reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

10.0 ExcellentOmer, Mar 2026
MNL - ICN
Read more Korean Air reviews

Always on time and flight crew were great. Boarding in Manila was a bit chaotic and disorganized compared to Incheon.

Never had a flight delay issue with Korean Air, that's why I always go with this airline.

Flight crew were very attentive and made this trip a pleasure. Plus the fact that this our first time flying business class.

The boarding process was efficient and quick. The seats were comfortable. The food was good. The service was excellent. We had a lovely flight from Seattle on Korean air

Flight crew was fantastic. The aircraft was meticulously cleaned at all times. The crew was continuously checking to see if the passengers were ok.

Korean are so racist and when I ask question or directions they totally ignore me and say racist. Also they give me an rude attitude.

It was good, I liked the self-serve snacks but it was a little difficult to get the alcohol, which is understandable since I wouldn't want kids sneaking it.

Friendly flight attendants and gate agents. Very clean plane and food was good!

I normally love Korean Air, but this trip was not great. We boarded the plan and were settling into our seats. My son and I use these leg swings and we used it on the trip over to Cambodia, but on the way back the flight attendant very rudely told us we could not use it and that it was against regulations. I asked to see the regulation, but never saw it. The food on this trip was horrible as well, Even my son's kids meal was disgusting so we didn't eat anything on the flight. Thankfully we brought snacks. Entertainment - what happened to the games?

This was an amazing flight. The crew was great. The service was great. The food provided was great.

Reasonable fair, good service, in sum, I am very happy!

Courteous crew and effective service on-board. Good leg room. Areas for improvement: 1. Limited menu meal menu options. During checking there was no means provided to select meal option. On our return flight the first meal had Pork and Beef options only. Fortunately the second meal had Chicken as an option. Otherwise we would have gone without meal through 13+ hrs of journey, 2. Limited choice and very limited number of movies and TV shows.

I booked this airline twice. The first time, they cancelled the flight due to destination weather condition but without offering any optional flight but only a cancelation notice sent via SMS. I had no choice but to re-book United airline with the same travel date and destination. (no impact on the weather condition Air Premia claimed) The second time, my husband missed the flight due to local traffic in Seoul. Normally, all major airline would helped you to re-book the same flight next day with changing fee only. But Air Premia offered nothing and only requested my husband to re-book a full price ticket.

Don't splurge for the Premium Wide Economy. They compare it to business class. This is not business class, and the seats are very uncomfortable.

For the second meal, the different food choices ran out both times so we were only offered one.

Seating was good in the economy with plenty of leg room. The seat cushions were a little firm though, especially for such a long flight. All meals were Korean as would be expected. The food was typical airline quality. Edible, but not something you would recommend to friends. Inflight entertainment was also all Korean but Korean tv and movies are made well and you can find something to watch. Just be prepared to read subtitles. Overall it was a good flight, especially for the price.

The crews were friendly, professional and courteous. Checking in was easy and smooth. The best part is, as we all know, the price.

The person in front of me was rude. He may came from some communism countries and don’t care of other people. No common manner and sense between human being.

Very nice staff, airplanes, and an excellent value in premium economy.

Food quality is poor. Flight attendants are very friendly and professional.

Humm, I should have known that the seat I peaked on my flight from Inchon to Manila was designed for a toddler or very small person.

The staff hold my luggage to steel and exchange my stub, i was very disappointed.

Kayak along with airfare assay are attempting to steal my money. Charges are being pressed.

Customer service and attention to details. The food was good.

Felt like the oldest plane in Asiana Fleet. Screen was 5-6in only and no charging at all. Movie selection wasn't great.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

I’d have rated Asiana good except an unfortunate incident in which I felt one of your employee didn’t really help us. During the first leg of the trip, the flight from LAX to ICN, I left my backpack on the plane. When I realized, I reported to one of your employee who promised me that it’d be taken care of, that my backpack will be there at HCM city. When we arrived there, HCM people had no idea and my backpack was still at Incheon airport who denied any knowledge whatsoever. I was left in the cold and felt helpless. I was very disappointed. I’d like someone to look into this and let me know.

It was my first time flying Asiana but i was very pleased with how professional and understanding the flight crew is with little kids. One flight attendant held my 3 year old daughter’s hand guiding her to the exit after landing while i had my hands full with luggage and my infant. She was very helpful.

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Better screens, it would have been nice to have more comfortable seats.

Long story short, it was one of the better flight experiences I've had in some time when compared with other airlines.

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Easy of boarding, helpfully staff at check in, surprisingly comfortable seating

Lost of requested seat assignments. Lost my husband's meal choice

My service dog and I were asked to deplane just before they closed the door - clearly very last minute they couldn’t find the documentation that I have filled out many many times before that is for flying service animals. I purposely purchase 3seats (a whole row) since he is large and not all passengers want to sit next to a dog on a cross country flight. The plane departed with my husband on it!!! They made me fill out a hard copy of the same form and had to reschedule me on a later flight where they could find 3 seats together!! I’ve done this so many times before - clearly the error was on their part in a technology glitch - but really people - do better!! Very traumatic - and my husband had to wait for us when he landed ….so bad. Poor pup was confused and tired.

My flight time was changed without any notification to me which ruined my time sensitive plans so I ended up completely changing my travel plans and no reimbursement.

No screens or meal options. Freezing cold. Dirty seats. Left late.

I liked that my son and I were reseated next to each other (we had different bookings). I liked that it was a directg flight and mostly on time. I liked that you provided pillows and blankets. Flight attendants were generally courteous. The messaging through wifi did not work well. The food was not good. Seats are very narrow and I felt slightly claustraphobic in the window seat.

Some crew were unfriendly or in some cases just straight up rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

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

Information on your arrival and departure airports