$426 Find Cheap Flights from San Francisco to South Korea

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 South Korea departing on 7/17. 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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Cheap Flights from San Francisco to South Korea

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheonnonstop$704
Jeju City
Jeju City1 stop$938
Busan
Busan1 stop$973
Daegu
Daegu1 stop$939
Seoul
Incheonnonstop$704
Jeju City
Jeju City1 stop$938
Busan
Busan1 stop$973
Daegu
Daegu1 stop$939

Book Cheap San Francisco to South Korea Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to South Korea 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 South Korea

Sun, Sep 6 - Sun, Sep 27
AIR PREMIA Logo
3:30 pm - 8:10 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:00 pm - 1:00 pm
ICN
-
SFO
11h 00mnonstop
$704AIR PREMIA
Sun, Aug 16 - Sun, Aug 23
AIR PREMIA Logo
3:30 pm - 8:10 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:00 pm - 1:00 pm
ICN
-
SFO
11h 00mnonstop
$714AIR PREMIA
Mon, Aug 10 - Fri, Aug 21
AIR PREMIA Logo
3:30 pm - 8:10 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:00 pm - 1:00 pm
ICN
-
SFO
11h 00mnonstop
$724AIR PREMIA
Fri, Sep 4 - Thu, Sep 10
Cathay Pacific Logo
1:20 am - 6:30 am
SFO
-
CJU
37h 10m
1 stop
Cathay Pacific Logo
7:30 am - 11:25 am
CJU
-
SFO
19h 55m
1 stop
$938Cathay Pacific
Mon, Aug 17 - Fri, Sep 4
Korean Air Logo
1:10 pm - 7:55 pm
SFO
-
TAE
14h 45m
1 stop
Korean Air Logo
7:55 am - 10:40 am
TAE
-
SFO
18h 45m
1 stop
$939Korean Air
Tue, Aug 18 - Fri, Sep 4
Korean Air Logo
2:40 pm - 7:55 pm
SFO
-
TAE
37h 15m
2 stops
Korean Air Logo
7:55 am - 10:40 am
TAE
-
SFO
18h 45m
1 stop
$940Korean Air
Sun, Oct 11 - Wed, Oct 21
Cathay Pacific Logo
1:00 pm - 1:35 pm
SFO
-
PUS
32h 35m
1 stop
Cathay Pacific Logo
2:20 pm - 10:40 pm
PUS
-
SFO
24h 20m
1 stop
$995Cathay Pacific
Wed, Oct 28 - Mon, Nov 23
Delta Logo
12:40 pm - 10:50 am
SFO
-
PUS
30h 10m
1 stop
Delta Logo
4:10 pm - 9:30 am
PUS
-
SFO
34h 20m
1 stop
$1,067Delta
Wed, Oct 28 - Mon, Nov 23
Delta Logo
7:00 am - 8:45 pm
SFO
-
PUS
21h 45m
2 stops
Delta Logo
4:10 pm - 9:30 am
PUS
-
SFO
34h 20m
1 stop
$1,071Delta
Fri, Aug 7 - Thu, Aug 13
Asiana Airlines Logo
11:20 pm - 2:10 pm
SFO
-
CJU
22h 50m
1 stop
Asiana Airlines Logo
7:05 am - 4:00 pm
CJU
-
SFO
24h 55m
1 stop
$1,157Asiana Airlines
Booking Insights

KAYAK's insights & trends for San Francisco to South Korea flights

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

What is the cheapest San Francisco to South Korea flight route?

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

The cheapest ticket to South Korea from San Francisco found in the last 72 hours was to Seoul, at $741 round-trip. The most popular route is from San Francisco (SFO) to Incheon Intl Airport (ICN), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $741.

What is the cheapest time of day to fly to South Korea?

The average price for all round-trip flights from San Francisco to South Korea depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to South Korea is generally at night, when round-trip flights cost $783 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to South Korea is generally in the morning, which is peak travel time and where the average cost of a ticket is $849.

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

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 $941, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from San Francisco to South Korea?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Francisco to South Korea, 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 South Korea is January, when tickets cost $596 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $2,099 and $1,840 respectively.

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

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

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

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

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 South Korea, 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 South Korea, you should book around 1 week before departure. For the absolute cheapest price, our data suggests you should book 2 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$426
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 43% increase in price.
Flight from San Francisco to Seoul Incheon Airport

Flights from San Francisco to South Korea: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from San Francisco to South Korea 
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 - booking South Korea flights

  • Are there nonstop flights from SFO to South Korea?

    Yes. About four daily nonstop flights service the SFO to South Korea route. The direct flights on this route take about 12h 40min, but the flight duration can vary depending on the airline and the departure time. Due to the limited schedule of nonstop flights from San Francisco to South Korea, it is essential to book your flight in advance. The airlines operating nonstop flights from San Francisco to South Korea are American Airlines, Asiana Airlines, and Korean Air.

  • What is the best airport to fly into in South Korea from San Francisco?

    Incheon International Airport (ICN) is the primary international gateway to South Korea. Booking your flight to ICN is best, as it is the hub for direct flights from SFO and places you only a few minutes from the country’s capital. This airport also services the most frequent flights from San Francisco, offering you options and flexibility. Gimpo International Airport (GMP) is smaller, nestled closer to the capital city, and you will spend the least amount of time in airport checks and clearance there because it is relatively less busy.

  • What public transportation options are available from ICN to the Seoul city center?

    ICN boasts efficient public transportation connections to the city center, featuring taxis, buses, and trains. You can catch the intercity bus service from the transit center to downtown Seoul or hop into local bus lines 111 and 303. You can take a taxi to the city center from the taxi stands located right at the exit of the Arrivals hall. The Airport Railroad service offers frequent direct connections to Seoul Station, with nonstop express options available.

  • What services are available for travelers with limited mobility at ICN?

    ICN features accessible amenities, free wheelchairs and strollers, wheelchair lifts, help-phone service, pickup services, and special assistance services for travelers with restricted mobility. If you need any special assistance, be sure to inform your airline in advance.

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

    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 South Korea.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from San Francisco to South Korea 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 South Korea?

    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 from San Francisco to South Korea with an airline and back with another airline.

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

    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 from San Francisco to South Korea up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top tips for finding cheap flights to South Korea

  • Looking for a cheap flight? 25% of our users found tickets from San Francisco to the following destinations at these prices or less: Incheon $491 one-way - $822 round-trip
  • US citizens need a valid passport to enter South Korea. As long as you have a valid government-issued passport, you can visit South Korea without a visa for a stay of up to 90 days. However, acquiring a visa or Korean Electronic Travel Authorization (K-ETA) in advance can make entry easier.
  • San Francisco International Airport (SFO) features four terminals, with the International Terminal servicing flights to South Korea. The airport terminals form a loop around the parking area, and walking through the loop can take a few minutes. However, you can also use the AirTrain if you don’t want to walk.
  • If you are stuck at SFO during a layover, you can beat boredom with various activities at the airport. Watch the aircraft take off at the outdoor terrace at the International Terminal, explore intriguing exhibits at the airport museums within the terminal building, or enjoy a self-guided tour of the airport.
  • You can access medical treatment at the SFO Medical Clinic before embarking on your flight to South Korea. The medical clinic is located within the International Terminal Main Hall.
  • Should you wish to grab a bite before your long-haul flight to South Korea, you can visit the airport food concessions. SFO features several eateries operating with varying schedules, offering you many options.

Reviews of the top 5 airlines serving from San Francisco to South Korea

 
Need help choosing which airline to fly with from San Francisco to South Korea? 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 1217 reviews
8.5Boarding
8.1Food
8.2Entertainment
8.7Crew
8.3Comfort
Airline reviews

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

4.0 OkayAnonymous, Apr 2026
GMP - CJU
Read more Korean Air reviews

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

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?

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 uses scammer sites to steal money from their victims.

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.

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.

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.

I flew on Zip Air on the way to Asia so I can compare. The two airlines are night and day. Air Premia was so amazing compared to Zip Air. I have flown Korean Air in the past and I honestly don’t know the difference between Air Premia and the “non-budget” airlines. My Air Premia flight provided me two bags whereas I had to pay for Zip Air. On my under 11 hour flight, we were provided two full meals! The flight attendants were so kind and polite.

For the price, the overall experience was what I expected. The prices were fair and competitive, the staff friendly and more responsive than other airlines, and seating spacious. The downside was food portion size, but I'll gladly pay a few dollars more for the hot noodles or other supplemental snacks, given the more affordable ticket prices. I don't mind the absence of Hollywood movie programming if that leads to inflated ticket prices. Wi-Fi worked well. In addition to spacious seating for the Wide Premiium, I'd suggest foot rests to complement the calf rests. There're problems with booking Air Premia tickets at the home website. The underlying app engine won't process non-Korean credit cards, which is a major oversight, probably hurting the company's bottom line. I can go to Kayak or a third-party website to book Air Premia tickets, but it's an awkward work-around when other airlines don't have to resort to this tactic.

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.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

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

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Flight itself excellent, but delayed so missed connection & got to destination 2 hrs later

Due to cancellation of connecting flight (Lufthansa) I didn’t fly with United

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Everything you need to know for your flight from San Francisco to South Korea

Information on your arrival and departure airports