$437 Find Cheap Flights from South Korea to San Francisco - Compare and Save

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Cheap Flights from South Korea to San Francisco

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from South Korea to San Francisco

Sat, Feb 27 - Sat, Mar 6
AIR PREMIA Logo
7:45 pm - 1:20 pmICN  Incheon Intl-SFO San Francisco
10h 35mnonstop
AIR PREMIA Logo
3:20 pm - 9:20 pmSFO  San Francisco-ICN Incheon Intl
13h 00mnonstop
$765AIR PREMIA
Fri, Dec 11 - Sat, Jan 9
AIR PREMIA Logo
7:45 pm - 1:20 pmICN  Incheon Intl-SFO San Francisco
10h 35mnonstop
AIR PREMIA Logo
3:20 pm - 9:20 pmSFO  San Francisco-ICN Incheon Intl
13h 00mnonstop
$766AIR PREMIA
Fri, Dec 18 - Tue, Jan 26
Multiple Airlines Logo
7:45 pm - 1:20 pmICN  Incheon Intl-SFO San Francisco
10h 35mnonstop
Multiple Airlines Logo
11:25 am - 12:40 amSFO  San Francisco-ICN Incheon Intl
20h 15m1 stop Hong Kong Intl
$801Multiple Airlines
Sun, Dec 20 - Tue, Jan 26
Multiple Airlines Logo
7:45 pm - 1:20 pmICN  Incheon Intl-SFO San Francisco
10h 35mnonstop
Multiple Airlines Logo
11:25 am - 12:40 amSFO  San Francisco-ICN Incheon Intl
20h 15m1 stop Hong Kong Intl
$801Multiple Airlines
Fri, Apr 30 - Tue, May 4
Air Canada Logo
5:45 pm - 12:38 pmICN  Incheon Intl-SFO San Francisco
34h 53m2 stops Vancouver Intl Edmonton
Air Canada Logo
1:30 pm - 4:05 pmSFO  San Francisco-ICN Incheon Intl
34h 35m2 stops Edmonton Vancouver Intl
$869Air Canada
Sat, Feb 13 - Sat, Feb 20
Air Canada Logo
6:55 pm - 11:01 pmICN  Incheon Intl-SFO San Francisco
21h 06m1 stop Vancouver Intl
Air Canada Logo
5:15 pm - 5:10 pmSFO  San Francisco-ICN Incheon Intl
30h 55m1 stop Vancouver Intl
$872Air Canada
Sun, Dec 20 - Tue, Dec 29
United Airlines Logo
12:45 pm - 6:30 amICN  Incheon Intl-SFO San Francisco
10h 45mnonstop
United Airlines Logo
9:30 pm - 4:25 pmSFO  San Francisco-ICN Incheon Intl
25h 55m1 stop Newark
$874United Airlines
Sun, Dec 27 - Wed, Dec 30
United Airlines Logo
12:45 pm - 6:30 amICN  Incheon Intl-SFO San Francisco
10h 45mnonstop
United Airlines Logo
11:45 pm - 5:40 amSFO  San Francisco-ICN Incheon Intl
12h 55mnonstop
$874United Airlines
Mon, Nov 23 - Fri, Nov 27
Asiana Airlines Logo
6:00 pm - 11:45 amICN  Incheon Intl-SFO San Francisco
10h 45mnonstop
Asiana Airlines Logo
11:45 pm - 5:40 amSFO  San Francisco-ICN Incheon Intl
12h 55mnonstop
$934Asiana Airlines
Sat, Dec 26 - Sat, Jan 2
Asiana Airlines Logo
6:00 pm - 11:45 amICN  Incheon Intl-SFO San Francisco
10h 45mnonstop
Asiana Airlines Logo
10:20 am - 4:15 pmSFO  San Francisco-ICN Incheon Intl
12h 55mnonstop
$934Asiana Airlines
Booking Insights

KAYAK's insights & trends for flights to San Francisco

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

What is the cheapest flight to San Francisco?

In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Incheon, at $765 return. The most popular connection is from Seoul to San Francisco and KAYAK users have found round-trip deals for as low as $765 in the last 5 days.

What is the cheapest day to fly to San Francisco?

Based on KAYAK data, the cheapest day to fly to San Francisco is Wednesday where round-trip tickets can be as cheap as $775. On the other hand, the most expensive day to fly is Friday, where round-trip prices are $977 on average.

What is the cheapest month to fly to San Francisco?

The cheapest month for flights to San Francisco is February, where tickets cost $578 on average for return flights. On the other hand, the most expensive months are August and July, where the average cost of tickets from South Korea is $1,011 and $932 respectively. For one-way flights, the best month to travel is February with an average price of $381.

What is the cheapest time of day to fly to San Francisco?

The cheapest time of day to fly to San Francisco is generally at night, when round-trip flights cost $781 on average. The most expensive time of day to fly to San Francisco is generally in the morning, which is peak travel time and where the average cost of a ticket is $879.

What is a good deal for flights to San Francisco?

If you’re looking for cheap airfare to San Francisco, 25% of our users found tickets to San Francisco for the following prices or less: From Incheon Intl Airport $875 round-trip.

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

To get a below average price, you should book around 3 weeks before departure, which saves you about 25% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Good to know

Low season

April

Cheapest flight

$437
Best time to beat the crowds with an average 5% drop in price.
Most popular time to fly and prices are also 23% lower on average.
Flight from Seoul Incheon Airport to San Francisco

FAQs - booking San Francisco flights

  • What is the cheapest flight to San Francisco?

    In the last 5 days, the cheapest flight deal to San Francisco was found on the route from Incheon, at $765 return. The most popular connection is from Seoul to San Francisco and KAYAK users have found round-trip deals for as low as $765 in the last 5 days.

  • How far is San Francisco Airport from central San Francisco?

    There are 11 miles between San Francisco city center and San Francisco Airport.

  • What is the name of San Francisco’s airport?

    When flying to San Francisco, you'll arrive at San Francisco Airport (SFO). The airport is also known as San Francisco or San Francisco Intl.

  • How much is a flight to San Francisco?

    On average, a flight to San Francisco costs $856. The cheapest price found on KAYAK in the last 2 weeks cost $452 and departed from Incheon Intl Airport.

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

    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 to San Francisco.

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

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

    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 San Francisco 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 to San Francisco?

    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 San Francisco 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 San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $468 or less one-way and $875 or less round-trip.

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest San Francisco flight deals.

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

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

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

10.0 ExcellentFiruz, Apr 2026
Read more Korean Air reviews

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I took several flights that day, this was the only flight that was absolutely freezing!! It was so cold.

It was a comfortable flight and the flight crew were lovely!

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.

The airplane very small , no space for put my carry on , they tell me loads my carry on I thought they will load my carry only Seattle to San Francisco but when I get off airplane at San Francisco they just tell me load my bags from Seattle to Bangkok Why they don’t tell me before load . I told them I don’t want load my bag from Seattle to Bangkok , because my carry on had medicine. Why crew from Seattle don’t help me , they only told my go to tell luggage claim Delta

Food was not great. Crew was lovely. There was no whisky on the first leg (BKK - ICN). And it took forever for my luggage to come out at LAX.

They let me board first because I'm a cancer patient & 75 years old. That was greatly helpful.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

Coming back to America was a peaceful flight everyone and everything was perfect

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.

Staff always with a smile and very helpful with my mom who has mobility issues.

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.

We took business class, It was comfortable and I was able to sleep.

The legroom in economy was better than other airlines. Since my legs are long, that means a lot. Also, the A380 from Los Angeles to Incheon gave passengers a smooth ride. Everything went smoothly from boarding to disembarkation in Incheon. I'd fly Asiana again!

The flight attendant, where kind of rude, there where hiding for almost 3 hours, without doing rounds to see if people needed water or pickup the water cups, the toilets were full of water cups, because they never come back to pick them up.

Amazing service and fabulous syaff. Loved the jumbo jet too, comfortable.

Air Premia flight and crew were great! My only complaint is that I booked through Kayak because my credit card wouldn’t work thru the Air Premia website. So, since I booked through Kayak, the seats that I selected with my daughter didn’t seem to happen, and we were separated by Air Premia and put in middle seats. We had to pay for bulkhead seats to correct the problem that someone else made. I then ensured that our seats were selected for the return trip, only to find out that we were separated again for the return flight. I recommend booking only with the airline if you want to sit next to your family.

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

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.

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.

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!

I would have enjoyed some hot tea, preferably green tea, but they only serve hot coffee.

10 Hours delay on departure of the return flight and in-flight Wi-Fi was not available entire flying time all that caused monetary loss to my business.

Starlink internet made the flight time shrink and I was able to work.

The plane was so old. I paid a ridiculous amount to fly business and there was no internet for six hours! This can't be happening in 2026 and especially in cross country flights where there are a high volume of business travelers.

The food could have been better and the entertainment could have better movies or streaming.

My flight from Boston to SFO was fine. Crew was friendly and helpful. Food was mediocre. Fright from SFO to MNL was not as good. My flight attendant was friendly but didn’t seem to have a lot of experience. She seemed overwhelmed. Also, this was the only red eye business class flight I’ve flown which only served dinner 2 hours after takeoff in a 13 hr flight. When I woke up 1 hr before landing, everyone was eating so I assumed bkft was being served. I pushed my button for help and no one came so I approached my flight attendant and she said they don’t serve bkft but she gave me choices for lunch or dinner. I routinely fly business class but I was disappointed with the lack of service and attention I was given on this flight. Also, most airlines will offer a snack or coffee before bkft is served but this was not offered during this flight. Overall, it was disappointing.

The food could be much better. Also very unfortunate that most of business class seats were empty but I could not upgrade.

Bag got checked but I thought one personal item was guaranteed.

The seats are very small, that is all the staff did a good job.

My experience was medium staff where great I dislike flying in triple 7 seats very uncomfortable and no room on jet all the rest of the flights where great

The crews are great.. Easy boarding. Inflight entertainment ok. Food is a disappointment.

There was no door or screen for privacy in Business class. With the price and class, the privacy is something the passengers expect. Understandably not all plane has the option but consider reconfiguration of the cabin. I would rather take other airlines in the future. The meal and snack options are different than what was in the website and printed information sheet. I also missed snacks but never offered again. It was not worth the price I paid.

My experience with Air Canada flight was really good. The seats were comfortable with decent legroom, and the staff was very polite and helpful throughout the journey. The food was tasty and served on time, and there were plenty of entertainment options which made the long flight feel much shorter. The flight was on time and the landing was smooth. Overall, it was a comfortable and stress-free journey, and I would definitely love to travel with Air Canada again.

The boarding process was going smoothly until the manager Bharti Singh insisted I check my duffle bag that fits under my seat. I travel with the duffle for this very reason. I know for a fact it fits under the seat. She was rude and aggressive, I was charged a check bag fee. She reminded me that I purchased a “basic”ticket. I fly Air Canada more then ten times a year and have spent thousands of dollars on tickets with Air Canada. Once the boarding closed there were many empty overhead bins. The airplane was an old, with no entertainment. The flight attendants were not pleasant, no smiles, not even friendly with each other. Over-all, seemed miserable. I fly all the time and have never experienced a flight crew so unpleasant. This was the worst flight I’ve ever had. If I didn’t have to fly Air Canada I would not use them again.

flight was full and no chance of getting a better sit. other than that. it was ok.

Traveling from Montreal to SFO, after landing in SFO, there was no announcement about where to claim our luggages. Our gate was in Terminal 1, and went to the luggage claim area in T1, but couldn't find any information on the screen. Eventually, an airport agent told us that our luggages would arrive in Terminal 2 luggage claim area.

We were reluctant to travel with Air Canada after reading many bad reviews; however, we were more than satisfied with the experience flying from San Francisco to Montreal and back. Seats were comfortable (although on the return flight we had very little leg room) and the crew was friendly and competent. The entertainment was outstanding, with hundreds of choices, from movies to shows to comedy. Our luggage was delivered in a timely manner (a little slow in San Francisco) and we were sent tracking notices all along the way through the Air Canada app. I wouldn't hesitate to travel with Air Canada again.

Flight was late from Vancouver to San Francisco but they never announced

The first flight was delayed and we almost lost the second flight . Was a scary moment

I suppose to board the plane AC5110 to San Francisco on July 16 2026 @07:00 am and arrive San Francisco at 09:25 am. At 9:30am still in YVR I was told the plane was delayed until 11:30 am to take off. Not until 11:35am the pilot of the plane declared that due to hydraulic system problem this plane was cancelled. After waited in a long pile up for negotiating with the counter-staff, I finally got the tickets for myself and my wife Yim Mei KONG firstly to Seattle and then transferred to San Francisco on the plane AS 2014 & AS 791 with Alaska Airlines. I suppose to attend the funeral of our friend in San Francisco on July 18 and a Memorial Gathering for the Birthday of the deceased on July 16, 2026. I arrived San Francisco at 9:40 pm that day (12 hours later) and couldn't joint the Memorial Gathering. This upset me a lot. I am seeking for compensation of this failing trip. Please let me know how to and where to forward my complaint.

Horrible! Rude flight attendant, barely any service on such a long flight. I wouldn't recommend Air Canada to anyone.

not able to change flight, no customer service from KAYAK

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