$349 Find Cheap Flights from San Francisco to South Korea - 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 South Korea departing on 7/30. 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.
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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
Incheon1 stop$707
Jeju City
Jeju City1 stop$893
Busan
Busan1 stop$882
Daegu
Daegu2 stops$994
Seoul
Incheon1 stop$707
Jeju City
Jeju City1 stop$893
Busan
Busan1 stop$882
Daegu
Daegu2 stops$994

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

Mon, Sep 28 - Sun, Oct 4
United Airlines Logo
10:45 pm - 3:20 pm
SFO
-
ICN
24h 35m
1 stop
United Airlines Logo
5:15 pm - 10:13 am
ICN
-
SFO
32h 58m
1 stop
$707United Airlines
Sat, Sep 5 - Sun, Sep 20
AIR PREMIA Logo
3:30 pm - 8:10 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
7:15 pm - 2:15 pm
ICN
-
SFO
11h 00mnonstop
$713AIR PREMIA
Wed, Aug 19 - Sat, Sep 5
AIR PREMIA Logo
5:00 pm - 9:40 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:00 pm - 1:00 pm
ICN
-
SFO
11h 00mnonstop
$714AIR PREMIA
Sun, Sep 13 - Sat, Oct 17
AIR PREMIA Logo
5:00 pm - 9:40 pm
SFO
-
ICN
12h 40mnonstop
AIR PREMIA Logo
6:00 pm - 1:00 pm
ICN
-
SFO
11h 00mnonstop
$716AIR PREMIA
Tue, Sep 15 - Sat, Oct 31
United Airlines Logo
11:45 pm - 4:20 am
SFO
-
ICN
12h 35mnonstop
United Airlines Logo
11:45 am - 6:30 am
ICN
-
SFO
10h 45mnonstop
$721United Airlines
Sun, Aug 30 - Fri, Sep 4
Philippine Airlines Logo
12:30 am - 7:50 pm
SFO
-
PUS
27h 20m
1 stop
Philippine Airlines Logo
9:00 pm - 9:10 pm
PUS
-
SFO
40h 10m
1 stop
$1,008Philippine Airlines
Tue, Aug 18 - Sun, Aug 30
Korean Air Logo
1:10 pm - 7:55 pm
SFO
-
TAE
14h 45m
1 stop
Korean Air Logo
7:55 am - 11:00 am
TAE
-
SFO
19h 05m
1 stop
$1,025Korean Air
Mon, Aug 31 - Fri, Sep 4
Korean Air Logo
2:36 pm - 7:45 am
SFO
-
PUS
25h 09m
2 stops
Korean Air Logo
10:40 am - 10:40 am
PUS
-
SFO
16h 00m
1 stop
$1,032Korean Air
Sun, Sep 13 - Sat, Sep 19
Delta Logo
12:50 pm - 7:45 am
SFO
-
PUS
26h 55m
1 stop
Delta Logo
8:45 am - 7:40 pm
PUS
-
SFO
26h 55m
2 stops
$1,033Delta
Sun, Oct 11 - Sat, Oct 17
Delta Logo
6:00 am - 7:55 pm
SFO
-
TAE
21h 55m
2 stops
Delta Logo
7:55 am - 11:56 pm
TAE
-
SFO
32h 01m
2 stops
$1,036Delta
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 5 days was to Seoul, at $696 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 5 days was $696.

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 $797 on average. Morning departures are around 3% 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 $857.

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 $790, 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 February and December, when the average cost of round-trip tickets is $1,715 and $1,658 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$349
Best time to beat the crowds with an average 3% 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 $430 one-way - $780 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 1221 reviews
8.3Comfort
8.1Food
8.7Crew
8.2Entertainment
8.5Boarding
Airline reviews

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

10.0 ExcellentVivian, Nov 2025
SEA - ICN
Read more Korean Air reviews

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.

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 was unable to select decent seats, and so I was stuck in the middle seat because it was selected for me

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

long flights are difficult but the crew and amenities made it a very good experience

Good. Obviously there is a slightly condescending attitude of all American workers towards their customers but other than that all good.

They destroyed my Michael Kors Carryon luggage, they didn’t announce that only check in the carry on and when we get inside a couple of room to put the carry on bag. I was disappointed and sad because of the damaged of my luggage. They should replace it or fixed it.

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

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 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.

The staff were very friendly, and the flight was comfortable. That said, there was no option to specify dietary restrictions before the flight, so you may need to bring your own food. Also, there was no wifi available for the flight, though there is an in-flight entertainment console with many Korean-language shows and movies.

The legroom was great for a 5’11” person. The 11 hour direct flight had two meal services included in the ticket price which was less than other airline’s cost without food service (Canada air)from sfo to incheon. The airline is focused towards Korean nationals with the onboard entertainment selection of Korean movies but English subtitles were available. Overall premia air is a great option to fly from the US to Korea.

Plane and service were great. The entertainment is only for Koreans. Wish there were vegetarian options for food. All in all pleasantly surprised. Economy premium was quite good.

Some favorite food ran out of service and I have to eat what was left available. Also I had to drink cold red wind! Why could not have been kept in room temperature?

Plan was very clean and very comfortable seat Very smooth flight without any engine noises.

The leg space is generous at 35 inches. The food is quite limited with one breakfast, one lunch and 1 snack throughout the 14 hr trip. The entrainment state is big fallout with only a handful of movies, all Korean. Quite a few of them are not for kids for sure. And the onboard paid wifi is not working, not sure whether it is just for this flt, which prevents you from entertaining yourself. The flt attendant speaks little language other than Korean. The biggest drawback with this new airline is that it does not have any partnership with other airlines so if you are connecting in Seoul, your luggage is not transferred. And you have to get into the custom, pick it up then check in with other airline, which requires very long layover to manage the connection. We planned 3.5 hr layover, with flt delayed 2.5 hrs, we missed the connection flt with one hr left in between. In summary, if no connection is needed for your itinerary and you are Korean, air premia is a good option with competitive price. Otherwise, go with one of the major carriers.

Food is very little, we were hungry again afterward. 💺 is very small not comfortable. Very helpful staffs at check in counter.

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.

Love flying Asiana. Been using it for over a decade now.

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

I like the food, the crew and everything.!!! Except for the delay in our flight.

Check in agent very rude, no greeting “Hi” or “ Thank you. Doesn’t direct where to go for gate info. In flight crew staff not friendly. Very disappointed ☹️

My favorite airline to fly across the Pacific. The Business class lounge is fantastic, the wonderful flight attendants are helpful and professional. Great comfort while flying.

I recently had the pleasure of flying with Asiana Airlines, and I can confidently say it was an outstanding experience. From the moment I checked in, the staff demonstrated exceptional professionalism and warmth. The boarding process was seamless and well-organized, ensuring a stress-free start to my journey. Onboard, the flight attendants were attentive, courteous, and went above and beyond to cater to passengers' needs. The seats were comfortable, with ample legroom, and the in-flight entertainment options were diverse and up-to-date, making the flight enjoyable and relaxing. Additionally, the meals served were delicious and well-presented, reflecting a high standard of culinary quality. The airline's commitment to safety was evident throughout the flight, with clear announcements and a reassuring presence from the crew. Overall, Asiana Airlines provided a top-tier travel experience, and I would highly recommend them to anyone seeking comfort, quality service, and a memorable journey.

Flight delayed four separate times. I’m now one hour hours late to landing.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

Our flight from SFO to MSP was right on time on 11/15/2025. No delays. As we approached MSP at about 8 pm, we circled in the air until 8:40 pm so I don't call that efficient for MSP. I think the captain should announce the delay and why. (as if we all don't know that we are just circling around the area, slowing down, speeding up, slowing down.) Thank you. Marilyn Fischer

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

Thank you for not flipping the plane on the run way. You guys get a 5 star rating for the flight!!!

Boarding is, as it always is… horrible. Gate lice. Slow moving zones. Too many people with carry ons

New boarding doesn't make sense. Filling front first is slow.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Excellent communication from the staff. We actually arrived early. Very friendly and professional staff.

No extra snacks were available. Meals quality is terrible. Crew was not friendly.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

It was perfect! United Airlines staff was extremely caring, super friendly and professional

United has maintenance issues and can then never recover. No operations ability and simple issues always turn into multiple hours long cascading delays. Worst airline on earth.

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

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

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

Information on your arrival and departure airports