HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
South Korea

$366+ Cheap flights from San Francisco (SFO) to South Korea

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ICN
Apr 17 — Apr 241
Fri 4/17
Fri 4/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from San Francisco to South Korea with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from San Francisco to South Korea

Cheapest flights from San Francisco to South Korea
Explore the most affordable flight options available from San Francisco to South Korea. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 18, 2026.

This AIR PREMIA deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AIR PREMIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:30 pm
SFO
-
ICN
Nonstop12h 40m
AIR PREMIA
Wed 9/236:00 pm
ICN
-
SFO
Nonstop11h 00m
AIR PREMIA
Deal found 3/13$662
This oojo deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/612:30 am
SFO
-
ICN
1 stop26h 45m
Philippine Airlines
Wed 10/288:30 pm
ICN
-
SFO
1 stop40h 40m
Philippine Airlines
Deal found 3/15$663
This AIR PREMIA deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure AIR PREMIA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/253:30 pm
SFO
-
ICN
Nonstop13h 00m
AIR PREMIA
Sat 11/146:55 pm
ICN
-
SFO
Nonstop10h 35m
AIR PREMIA
Deal found 3/13$664
This Trip.com deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:30 am
SFO
-
ICN
1 stop37h 30m
Philippine Airlines
Sat 9/267:20 am
ICN
-
SFO
1 stop29h 50m
Philippine Airlines
Deal found 3/16$666
This KAYAK deal was found by Cheapflights users on 3/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1612:30 am
SFO
-
ICN
1 stop26h 45m
Philippine Airlines
Wed 9/307:20 am
ICN
-
SFO
1 stop29h 50m
Philippine Airlines
Deal found 3/17$667
This KAYAK deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:30 am
SFO
-
ICN
1 stop26h 45m
Philippine Airlines
Mon 9/287:20 am
ICN
-
SFO
1 stop29h 50m
Philippine Airlines
Deal found 3/16$668
This CheapOair deal was found by Cheapflights users on 3/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:30 am
SFO
-
ICN
1 stop26h 45m
Philippine Airlines
Wed 9/97:20 am
ICN
-
SFO
1 stop29h 50m
Philippine Airlines
Deal found 3/16$669
This Vliegwinkel deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/193:30 pm
SFO
-
ICN
Nonstop12h 40m
AIR PREMIA
Mon 5/46:00 pm
ICN
-
SFO
Nonstop11h 00m
AIR PREMIA
Deal found 3/13$672
This BusinessClass deal was found by Cheapflights users on 3/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3112:35 am
SFO
-
ICN
2 stops29h 15m
China Southern
Tue 9/154:45 pm
ICN
-
SFO
1 stop19h 55m
China Southern
Deal found 3/13$674
This Gotogate deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1212:00 pm
SFO
-
ICN
1 stop34h 20m
China Eastern
Sun 12/64:20 pm
ICN
-
SFO
1 stop33h 40m
China Eastern
Deal found 3/15$675
This BusinessClass deal was found by Cheapflights users on 3/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2012:00 pm
SFO
-
ICN
1 stop33h 30m
China Eastern
Wed 5/204:20 pm
ICN
-
SFO
1 stop32h 45m
China Eastern
Deal found 3/15$677
This Kiwi.com deal was found by Cheapflights users on 3/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/273:30 pm
SFO
-
ICN
Nonstop12h 40m
AIR PREMIA
Sun 5/176:00 pm
ICN
-
SFO
Nonstop11h 00m
AIR PREMIA
Deal found 3/14$678

Find flight deals from San Francisco to South Korea

Keep the following information in mind while searching for San Francisco to South Korea flight deals. Data was last updated March 18, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$662
(AIR PREMIA)

One-way from

$366
(Trip.com)

Popular in

June

Cheapest in

November

Average price

$755

Good round-trip deal

$680 or less

Good one-way deal

$367 or less
Provider with most accurate pricing for San Francisco-Seoul (SEL) flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Seoul (SEL) flights.
Search Deals
From San Francisco to South Korea
Search Deals
One-way flight from San Francisco to South Korea
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($162 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from San Francisco to South Korea.
Search Deals
Price to beat on a one-way flight from San Francisco to South Korea.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to South Korea that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 18, 2026.
Use the filters below to find and compare flights from San Francisco to South Korea that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sat 9/5

12:30 am-7:15 pm

1 stop26h 45m

Incheon Intl

Wed 9/9

7:20 am-9:10 pm

1 stop29h 50m

$668
Quickest round-trip

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Wed 4/15

11:40 pm-4:20 am

Nonstop12h 40m

Incheon Intl

Wed 4/22

11:30 am-6:15 am

Nonstop10h 45m

$762

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Fri 5/1

10:20 am-3:00 pm

Nonstop12h 40m

Incheon Intl

Fri 5/22

11:30 am-6:30 am

Nonstop11h 00m

$762

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sun 9/6

11:59 pm-3:20 pm

1 stop23h 21m

Incheon Intl

Wed 9/9

11:30 am-6:20 am

Nonstop10h 50m

$766

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Wed 4/29

9:00 am-5:30 pm

1 stop16h 30m

Incheon Intl

Sun 5/10

7:35 pm-8:14 pm

1 stop40h 39m

$783

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sat 4/18

11:40 pm-4:20 am

Nonstop12h 40m

Incheon Intl

Sun 4/26

4:50 pm-11:35 am

Nonstop10h 45m

$812

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Wed 4/8

10:20 am-3:00 pm

Nonstop12h 40m

Incheon Intl

Wed 4/22

11:30 am-6:15 am

Nonstop10h 45m

$812

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sat 9/5

1:05 am-7:05 pm

1 stop26h 00m

Incheon Intl

Tue 9/22

12:35 pm-7:55 pm

1 stop23h 20m

$846

San FranciscoBusan

SFO - PUS

SFOPUS

San Francisco

Fri 5/1

11:50 pm-6:55 am

2 stops39h 05m

Busan Gimhae

Fri 5/8

7:50 am-2:45 pm

1 stop22h 55m

$866

San FranciscoJeju City

SFO - CJU

SFOCJU

San Francisco

Sat 4/25

12:00 pm-6:10 pm

1 stop38h 10m

Jeju City

Sun 5/10

7:10 pm-9:05 am

1 stop29h 55m

$867

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/17

Showing 1-10 of 60 resultsSorted by cheapest first
1
2
3
...
6

Best time to book a flight from San Francisco to South Korea

Have a flexible travel schedule? Discover the best time to fly to South Korea from San Francisco with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from San Francisco to South Korea?

Currently, May is the cheapest month in which you can book a flight from San Francisco to South Korea (average of $468). Flying from San Francisco to South Korea in June is currently the most expensive (average of $661). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SFO to KR?

Find hourly flight availability from San Francisco to South Korea. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 18, 2026.

Unlike in the morning, when flights are generally more expensive, you can save up to 23% on flights from San Francisco to South Korea by exploring options for tickets at noon.

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

Use this chart to determine the cheapest time to fly round-trip from San Francisco to South Korea. Price data was last updated on March 14, 2026.

Travelers seeking maximum savings on their San Francisco to South Korea flight should consider departing on Monday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from San Francisco to South Korea

Explore weekly flight availability from San Francisco to South Korea. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 18, 2026.

The most flights from SFO to KR0 are scheduled on a Monday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (10 on average).

How often are flights from San Francisco to South Korea delayed?

About 22% of weekly flights between San Francisco and South Korea have experienced delays in the past year, with the average delay time being 233 minutes.

What is the most punctual flight time for San Francisco to South Korea flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Saturday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on San Francisco to South Korea flights?

Over the last year, AIR PREMIA have had the lowest number of delays on this route, with just 13% of flights being delayed.

Reviews of airlines servicing South Korea

Get insights into the airlines that provide service to South Korea. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to South Korea. Reviews last updated March 18, 2026.
Get a feel of what it's like to fly with Korean Air,AIR PREMIA, andAsiana Airlines from San Francisco to South Korea by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,202 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Korean Air
8.4
Very good
1,202 reviews
Korean Air
8.4
Very good
1,202 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
AIR PREMIA
8.2
Very good
83 reviews
Korean Air
8.4
Very good
1,202 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Asiana Airlines
8.1
Very good
506 reviews
Korean Air
8.4
Very good
1,202 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
Delta
7.9
Good
8,289 reviews
Korean Air
8.4
Very good
1,202 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.
United Airlines
7.4
Good
9,435 reviews
Korean Air
8.4
Very good
1,202 reviews

Boarding

8.5

Comfort

8.3

Entertainment

8.2

Food

8.1

Overall

8.4

Crew

8.7

Reviews

1 / 20
10.0
Excellent

Chris,Mar 2025

SEA - ICN

Was told the flight was overbooked so they selected only a few people to weight their bags and we were forced to check our luggage. We Once we got seated on the flight there were many seats vacant and our overhead bin was completely open. Both our luggage and our carryon were small. We had booked our tickets months in advance and we watched people carry two small suitcases on without one word to them. Am I upset?? Yes it was disappointing.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to South Korea. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Francisco to South Korea?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to South Korea. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • How long is the flight from San Francisco to South Korea?

    Airlines like Philippine Airlines, United Airlines, and Alaska Airlines fly from San Francisco to South Korea in about 12h 40m. The time it takes to get you to your destination can typically vary by up to 14h 05m. Airlines will cover a distance of 5642 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from San Francisco to South Korea one-way?

    The cheapest airline one-way is Hawaiian Airlines, with whom users have recently found tickets for as low as $197. However, be on the lookout for offers from WestJet and Cathay Pacific, as they are both options that can get you from San Francisco to South Korea for a low price.

  • What are the most popular routes from San Francisco to South Korea?

    While some choose either San Francisco - Seoul Gimpo Intl or San Francisco - Jeju City, San Francisco - Incheon Intl is the most popular route from San Francisco to South Korea.

  • What are the most reliable airlines from San Francisco to South Korea?

    The top 3 most reliable airlines when flying from San Francisco to South Korea are Thai Airways (92%), Singapore Airlines (92%) and AIR PREMIA (90%).

  • What are the cheapest flights from San Francisco to South Korea?

    Looking for the cheapest flight from San Francisco to South Korea? While on average our users pay $1,196, our data indicates the cheapest price to be $312. The most popular route (San Francisco - Incheon Intl), is priced around $608.

  • Can I find deals for flights from San Francisco to South Korea that include hotel bookings?

    Yes. In addition to deals on San Francisco to South Korea flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to South Korea?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco to South Korea.

  • Can I find deals for business class flights from San Francisco to South Korea?

    Yes. Cheapflights offers flight deals from San Francisco to South Korea by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco to South Korea?

    Currently, May is the cheapest month in which you can book a flight from San Francisco to South Korea (average of $468). Flying from San Francisco to South Korea in June is currently the most expensive (average of $661). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from San Francisco to South Korea

Discover the top 10 airlines that operate flights from San Francisco to South Korea. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated March 18, 2026.
AirlineCheapestAverageFlexibilityOn-time
AIR PREMIACheapest$538Average$734FlexibilityNo cancel feeOn-timeN/A
Japan AirlinesCheapest$630Average$640FlexibilityNo cancel feeOn-time79%
Cathay PacificCheapest$640Average$890FlexibilityNo cancel feeOn-time72%
Singapore AirlinesCheapest$651Average$848FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$660Average$757FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$672Average$806FlexibilityNo cancel feeOn-time76%
Alaska AirlinesCheapest$672Average$1,072FlexibilityNo cancel feeOn-time75%
Air CanadaCheapest$796Average$1,115FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$813Average$924FlexibilityNo cancel feeOn-time81%
DeltaCheapest$861Average$1,261FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.