$270 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 9/15. 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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1 adult, Economy

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Best South Korea Flight Deals from San Francisco

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seoul
Incheonnonstop$609
Jeju City
Jeju City2 stops$1,045
Busan
Busan1 stop$808
Gwangju
Gwangju1 stop$891
Seoul
Incheonnonstop$609
Jeju City
Jeju City2 stops$1,045
Busan
Busan1 stop$808
Gwangju
Gwangju1 stop$891

Cheap Flights from San Francisco to South Korea

 
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, Aug 24 - Mon, Sep 15
AIR PREMIA Logo
3:30 pm - 8:30 pmSFO-ICN
13h 00mnonstop
AIR PREMIA Logo
6:20 pm - 1:00 pmICN-SFO
10h 40mnonstop
$609AIR PREMIA
Find Deal
Fri, Aug 22 - Mon, Sep 15
AIR PREMIA Logo
3:30 pm - 8:30 pmSFO-ICN
13h 00mnonstop
AIR PREMIA Logo
6:20 pm - 1:00 pmICN-SFO
10h 40mnonstop
$613AIR PREMIA
Find Deal
Thu, Jul 24 - Thu, Sep 4
United Airlines Logo
10:40 am - 3:00 pmSFO-ICN
12h 20mnonstop
United Airlines Logo
11:30 am - 6:10 amICN-SFO
10h 40mnonstop
$659United Airlines
Find Deal
Thu, Jul 24 - Thu, Sep 4
United Airlines Logo
10:40 am - 3:00 pmSFO-ICN
12h 20mnonstop
United Airlines Logo
4:50 pm - 11:35 amICN-SFO
10h 45mnonstop
$660United Airlines
Find Deal
Thu, Aug 7 - Tue, Aug 19
Asiana Airlines Logo
11:55 pm - 4:20 amSFO-ICN
12h 25mnonstop
Asiana Airlines Logo
4:50 pm - 11:50 amICN-SFO
11h 00mnonstop
$683Asiana Airlines
Find Deal
Thu, Sep 25 - Thu, Oct 16
Asiana Airlines Logo
11:45 pm - 4:20 amSFO-ICN
12h 35mnonstop
Asiana Airlines Logo
11:30 am - 6:10 amICN-SFO
10h 40mnonstop
$684Asiana Airlines
Find Deal
Thu, Jul 24 - Thu, Sep 4
Korean Air Logo
3:45 pm - 4:30 amSFO-ICN
20h 45m1 stop
Korean Air Logo
4:00 pm - 10:40 amICN-SFO
10h 40mnonstop
$803Korean Air
Find Deal
Thu, Jul 24 - Thu, Sep 4
Korean Air Logo
6:50 pm - 4:30 amSFO-ICN
17h 40m1 stop
Korean Air Logo
4:00 pm - 10:40 amICN-SFO
10h 40mnonstop
$804Korean Air
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Wed, Aug 20 - Sun, Aug 24
Delta Logo
5:55 am - 8:45 pmSFO-PUS
22h 50m2 stops
Delta Logo
8:05 am - 11:00 amPUS-SFO
18h 55m1 stop
$979Delta
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Wed, Jul 16 - Sun, Jul 20
Delta Logo
1:10 pm - 7:45 amSFO-PUS
26h 35m1 stop
Delta Logo
8:05 am - 8:11 pmPUS-SFO
28h 06m2 stops
$985Delta
Find Deal
Useful Info

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?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from San Francisco to South Korea.

The cheapest ticket to South Korea from San Francisco found in the last 72 hours was to Seoul, at $645 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 $645.

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.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $2,002 on average.

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 February, when tickets cost $661 (return) on average. On the other hand, the most expensive months are December and June, when the average cost of round-trip tickets is $1,488 and $1,196 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, Sunday 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 Wednesday, with Saturday 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 1 week before departure.


Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$270
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly with an average 19% increase in price.
Flight from San Francisco to Seoul Incheon 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.

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

    The cheapest time of day to fly to South Korea is generally in the evening, when round-trip flights cost $788 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to South Korea is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $915.

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 $412 one-way - $705 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.

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 1088 reviews
8.1Food
8.3Comfort
8.2Entertainment
8.5Boarding
8.7Crew
Airline reviews

Korean air has a little bit more seating space than Asiana air.

8.0 ExcellentAnonymous, Jun 2025CRK - ICN
Read more Korean Air reviews

Korean air has a little bit more seating space than Asiana air.

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

Unfortunately, there has been a boarding and departure delay. However, as usual, the flight arrived earlier than the scheduled. There has been a turbulence in-between, it’s unavoidable. I couldn’t complain them.

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

The food on this flight from NRT to ICN was average. The staff were very friendly, but the flight took about 60 minutes longer than it should have because the pilot was only flying at 330mph instead of 500-550. Not sure what the reason is for that, but it meant for a much longer flight.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

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

First time flying with them and was pleasantly surprised. I had a premium economy seat which is very similar to some other airlines regional business class product. Seat was large, pillow was provided, huge amount of leg room, entertainment was available (only Korean shows), and lunch meal was served between Narita and Seoul. Really enjoyable and affordable

Maybe the reimbursement voucher should have been larger than a 10k won. That voucher is only for refreshments. The flight was delayed or pushed to more than 5 hours. It should be more than just 10k won and it was already past midnight. Some people or passengers like who was already there 5 hours prior to the original flight departure. 4pm** That was the only unfortunate thing about it . Other than that it was good .

5 hour delay, therefore, middle of the night arrival doesn’t help.

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.

Most of them are OK! But, meals service was not enough. I felt hungry after eating the meal for the first time. I had to buy some other food. So I had to buy a sandwich and drinks for the return flight. And I am not sure it's only my feeling or not, I felt my butt is getting forward. I will use Korean Air or Asiana Airline for next time to visit 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.

This form doesn’t work. Can’t type in, had to copy-paste. The crew constantly telling everyone about minor things is unnecessary. Did you put the belt on, push your bag more under the seat… The seat space was good for tall people, the food was decent for airplane.

Roomy seats for the given price! I couldn’t ask more!

Great airline, but there was no English entertainment (movies or shows)

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

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

Everything was perfect. A flight attendant even brought me snacks after I declined food due to my desire to force myself to follow the destination time zone.

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

The boarding process was good. The toilet could be better maintained.

This has been the worst experience I've ever had. We arrived to Ho Chi Minh Airport and were supposed to get our Asiana ticket from the transfer counter as we came with a different airline. However, the staff at the transfer counter were not helpful and kept giving us different information. We were first told by Asiana airlines staff we had to wait 2 hours so they could print out and give us our tickets, then someone else told us we had to wait 3hrs, someone told us "I don't know, just go sit and wait and we will tell you later." This was at a place in the Ho Chi Minh airport that had no coffee or food shops, nothing, just immigration (to enter Vietnam with a Vietnam Visa) and security (to transfer into the gates) but we needed our printed boarding pass to go through. It wasn't until we demanded to speak to a supervisor as our flight time was 1hr away because they kept telling us "there's alot of time left for your international flight, we will get your tickets later" we still had to wait around 20minutes for the "Supervisor" to give us our tickets. I would NOT recommend Asiana Airlines, especially if going thru Ho Chi Minh Airport as they are not helpful. (We almost missed our flight, due to their lazyness and incompetence of printing our tickets) I would suggest Asiana Airlines to have a Machine in the transfer area so passengers can easily print out their boarding passes themselves and save some money by not hiring incompetent staff that can't do a simple task such as printing a boarding pass.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

Delta flight was on time, seats were comfortable, and crew was nice.

Bathrooms dirty sinks clogged. No one seemed to clean them. Plane very old

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

It was terrible, if they ran flights on time it would make a big difference.

Delta seems to be improving in many areas, except they are super bad with the food available. Bring back normal food service on long flights.

I actually received a notification from kayak on email but not one by text from Delta when my departure gait changed and I almost missed my flight

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

Very comfortable (upgraded to business class). The audio on my screen didn’t work, but I managed to play the audio through my phone while watching the screen.

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Breakfast was not loaded at SFO due to catering company change. Seems like a major airline at a major hub would have thought of something else or warned passengers to pick up food before boarding a 3 hour flight.

Boarding seemed to be organized bedlam. For what ever reason, preboarding took longer than 20 minutes. Made the plane 20 minutes late taking off. Luckily we arrived on time. Flight crew seemed very friendly. Only slight turbulence.

They hired a new catering company the same day of my flight. They botched the job by not delivering the right carts and after THREE HOURS waiting, the flight crew timed out (flight was 19 hours long and FAA rules state crew can’t work more than 14 hours long). So they CANCELED OUR FLIGHT!! Worst experience ever. Avoid UAL at all costs.

The personnel were professional and friendly. The Boeing 737 Max 9 is too claustrophobic and was very warm at both airport gates, and still warm in the air.

While the staff was pleasant and helpful, the following observations are for your awareness. There was some delay on the tarmac on take off and landing. The paid lunch/food offerings were limited. Entertainment was only available on WiFi at a cost.

get E+, a must for 5 hours flight if you are tall

Liked fold flat bed. Didn’t like having no window. Didn’t like poor choice of food and being served dinner very late, hours after take off of a 7:40pm flight. Servers not friendly. Food horrible in business class.

Everything is good except the dinner and breakfast. The sandwich is very delicious. Toilet is clean, I only use one of them. Flight attendants are very nice. 👍👍

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

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