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$334+ Cheap flights from Seoul (SEL) to San Francisco (SFO)

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 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
SEL — SFO
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Seoul to San Francisco are usually found in November or June, booked 24 days in advance, depart on a Monday or Wednesday and return on a Monday

Cheap flight deals from Seoul to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Seoul (SEL) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 15, 2025.

Round-trip from

$449
(Alaska Airlines)

One-way from

$334
(Kissandfly.com)

Popular in

August

Cheapest in

November

Average price

$627

Good round-trip deal

$552 or less

Good one-way deal

$408 or less
From Seoul (SEL) to San Francisco
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One-way flight from Seoul (SEL) to San Francisco
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Highest demand for flights based on searches. 13% potential increase in price ($104 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($22 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seoul (SEL) to San Francisco.
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Price to beat on a one-way flight from Seoul (SEL) to San Francisco.
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Find flight deals from Seoul to San Francisco

Cheapest flights from Seoul to San Francisco
Explore the most affordable flight options available from Seoul to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/299:25 pmICN - SFO
1 stop24h 52mAlaska Airlines
Mon 12/2910:42 pmSFO - ICN
2 stops50h 53mAlaska Airlines
Deal found 9/14$449
This Gotogate deal was found by Cheapflights users on 9/15. 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.
Wed 11/126:55 pmICN - SFO
1 stop34h 25mAir Canada
Sat 11/1511:20 amSFO - ICN
1 stop36h 50mAir Canada
Deal found 9/15$450
This Agoda.com deal was found by Cheapflights users on 9/15. 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 Agoda.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/75:45 pmICN - SFO
1 stop13h 43mAir Canada
Sat 11/16:00 pmSFO - ICN
1 stop31h 10mAir Canada
Deal found 9/15$451
This Hanatour deal was found by Cheapflights users on 9/13. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/176:20 pmICN - SFO
Nonstop10h 40mAIR PREMIA
Mon 11/172:30 pmSFO - ICN
Nonstop13h 00mAIR PREMIA
Deal found 9/13$452
This WhyPayMore deal was found by Cheapflights users on 9/14. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/208:35 pmICN - SFO
1 stop14h 32mHawaiian Airlines
Tue 1/69:41 pmSFO - ICN
1 stop27h 54mHawaiian Airlines
Deal found 9/14$453
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:35 pmICN - SFO
1 stop33h 09mAlaska Airlines
Sat 9/205:50 amSFO - ICN
2 stops20h 45mAlaska Airlines
Deal found 9/13$454
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/218:35 pmICN - SFO
1 stop16h 42mAlaska Airlines
Wed 12/3110:13 amSFO - ICN
1 stop15h 22mAlaska Airlines
Deal found 9/15$456
This WhyPayMore deal was found by Cheapflights users on 9/13. 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 WhyPayMore is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/185:45 pmICN - SFO
2 stops34h 38mAir Canada
Tue 9/238:36 amSFO - ICN
2 stops39h 29mAir Canada
Deal found 9/13$457
This Hanatour deal was found by Cheapflights users on 9/15. 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 Hanatour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/156:20 pmICN - SFO
Nonstop10h 40mAIR PREMIA
Sun 10/193:30 pmSFO - ICN
Nonstop13h 00mAIR PREMIA
Deal found 9/15$458
This Alaska Airlines deal was found by Cheapflights users on 9/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/288:35 pmICN - SFO
2 stops33h 48mAlaska Airlines
Fri 10/310:08 amSFO - ICN
1 stop16h 27mAlaska Airlines
Deal found 9/14$461
This Trip.com deal was found by Cheapflights users on 9/15. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/188:35 pmICN - SFO
1 stop16h 37mAlaska Airlines
Fri 10/249:34 amSFO - ICN
1 stop17h 01mAlaska Airlines
Deal found 9/15$462
This Alaska Airlines deal was found by Cheapflights users on 9/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/318:35 pmICN - SFO
2 stops28h 20mAlaska Airlines
Wed 11/126:23 pmSFO - ICN
2 stops32h 02mAlaska Airlines
Deal found 9/13$463

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seoul to San Francisco 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 September 15, 2025.
Use the filters below to find and compare flights from Seoul to San Francisco that are best for you.

Fly from

Seoul

Fly to

San Francisco

Route

Depart

Return

Price

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Sat 11/22

6:00 pm-11:35 am

Nonstop10h 35m

San Francisco

Sun 11/30

10:30 am-4:15 pm

Nonstop12h 45m

$466

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Fri 10/24

9:25 pm-8:38 am

2 stops27h 13m

San Francisco

Fri 10/31

7:00 am-6:35 pm

2 stops19h 35m

$487

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Wed 10/15

9:25 pm-8:38 am

2 stops27h 13m

San Francisco

Fri 3/20

6:15 pm-6:35 pm

2 stops32h 20m

$542

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Thu 10/30

4:00 pm-10:30 am

Nonstop10h 30m

San Francisco

Thu 11/6

8:10 pm-3:55 pm

1 stop26h 45m

$563

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Mon 10/6

4:00 pm-10:40 am

Nonstop10h 40m

San Francisco

Mon 10/20

4:45 pm-4:40 pm

1 stop31h 55m

$563

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Thu 10/23

4:00 pm-10:40 am

Nonstop10h 40m

San Francisco

Sun 10/26

4:45 pm-3:55 pm

1 stop31h 10m

$563

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Fri 10/31

8:05 pm-9:55 am

1 stop29h 50m

San Francisco

Wed 11/12

11:40 am-5:40 pm

Nonstop13h 00m

$563

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Wed 10/15

7:20 pm-9:55 am

1 stop30h 35m

San Francisco

Fri 3/20

12:40 pm-5:40 pm

Nonstop13h 00m

$564

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Thu 9/18

4:50 pm-11:35 am

Nonstop10h 45m

San Francisco

Tue 9/23

11:45 pm-4:20 am

Nonstop12h 35m

$608

IncheonSan Francisco

ICN - SFO

ICNSFO

Incheon Intl

Mon 10/13

4:00 pm-10:40 am

Nonstop10h 40m

San Francisco

Mon 10/20

4:45 pm-4:40 pm

1 stop31h 55m

$618

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 40 results
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The best insider tips for Seoul to San Francisco flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Seoul to San Francisco trip
Airlines
Asiana Airlines

Asiana's A380 business suite features a 32-inch screen and fully flat bed for luxury travel.


Economy Smartium on A350 offers 36-inch legroom, enhancing comfort for long flights.

Read more about Asiana Airlinesby Marisa Garcia
AIR PREMIA

Air Premia offers 35-inch legroom in Economy, ensuring comfort on long-haul flights.


Premium Economy includes priority boarding and extra baggage, enhancing the travel experience.

Read more about AIR PREMIAby Esther Carlstone
United Airlines

United's Polaris Business Class offers lie-flat seats and Saks Fifth Avenue bedding for ultimate comfort.


United's Premium Plus seats offer extra legroom and upgraded meals, ideal for long-haul flights.

Read more about United Airlinesby Harriet Baskas
Airports
ICN

Plan for extra time at ICN security, as lines can take up to 20 minutes, especially without fast track options.

Read more about ICNby Gabriel Leigh
SFO

Use BART for an affordable 40-minute trip from SFO to downtown San Francisco. Purchase a Clipper Card for easy fare payment.

Read more about SFOby Harriet Baskas
Our travel experts
Marisa Garcia

Marisa Garcia

Expert on Asiana Airlines

Marisa Garcia

Marisa Garcia

Marisa knows planes inside and out, spending 16 years working on aircraft in hangars at airports around the world. She is an aviation industry expert, specialized in airline interiors and regulations. Ten years ago, she pivoted to journalism. She shares her insights in leading aviation, travel, and business publications and on her site FlightChic.

Read more
Esther Carlstone

Esther Carlstone

Expert on AIR PREMIA

Esther Carlstone

Esther Carlstone

Esther Carlstone is a travel and food writer based in Los Angeles. Her work has appeared in publications such as Travel + Leisure, Lonely Planet, Forbes, Tripadvisor, Insider, and more.

Read more
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Gabriel Leigh

Gabriel Leigh

Expert on ICN

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more

Best time to book a flight from Seoul to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Seoul 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 Seoul to San Francisco

How far ahead should I book a flight from Seoul to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Seoul to San Francisco. Price data was last updated on September 12, 2025.

Booking 24 days in advance of your planned departure date is, on average, the best time to get cheap flights from Seoul to San Francisco. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, January is the cheapest month in which you can book a flight from Seoul to San Francisco (average of $276). Flying from Seoul to San Francisco in June is currently the most expensive (average of $357). 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 SEL to SFO?

Find hourly flight availability from Seoul to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

A simple way to save on the total cost of your ticket is to fly from Seoul to San Francisco at noon. If you’re flexible enough to do this you can expect to save up to 40% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Seoul to San Francisco?

Use this chart to determine the cheapest time to fly round-trip from Seoul to San Francisco. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Seoul to San Francisco flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seoul to San Francisco

Explore weekly flight availability from Seoul to San Francisco. 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 September 15, 2025.

The most flights from SEL to SFO 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).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with Korean Air, AIR PREMIA, and Asiana Airlines from Seoul to San Francisco to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Korean Air
8.4
Very good
1,139 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
AIR PREMIA
8.2
Very good
62 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Asiana Airlines
8.2
Very good
479 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
United Airlines
7.4
Good
8,929 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!
Air Canada
7.1
Good
10,000 reviews
Korean Air
8.4
Very good
1,139 reviews

Entertainment

8.2

Crew

8.7

Comfort

8.3

Overall

8.4

Food

8.1

Boarding

8.5

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from Seoul to San Francisco. 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 into for flights to San Francisco from Seoul?

    San Francisco (SFO) is the airport you will fly into if you book a flight from Seoul to San Francisco. You should not have trouble finding flights to San Francisco from Seoul; the airport handles an average of 10 inbound flights from Seoul per day. You should also have plenty of airline options to choose from since 6 airlines have flights to the San Francisco airport from Seoul. It is only a 11.8 mi journey from San Francisco (SFO) to San Francisco’s city center.

  • How popular is this Seoul to San Francisco flight route?

    Within the past month, 40 users have taken a look at flights from Seoul to San Francisco.

  • How long is the flight from Seoul to San Francisco?

    A quick flight from Seoul to San Francisco can take about 10h 30m. United Airlines provides one of the quickest options available for as low as $563. The distance from Seoul to San Francisco is about 5642 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Seoul to San Francisco round-trip?

    Air Canada, at $381, was found to be the cheapest airline from Seoul to San Francisco.Alternate airlines to your destination round-trip include United Airlines and Asiana Airlines. These flights start at 44% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $336 on AIR PREMIA. Other airlines that offer cheap prices include United Airlines from $358 and ZIPAIR from $371 one-way.

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

    The top 3 most reliable airlines when flying from Seoul to San Francisco are Asiana Airlines (61%), United Airlines (61%) and Thai Airways (44%).

  • What are the cheapest flights from Seoul to San Francisco?

    Looking at all options, your cheapest flight can be booked for $320. While the most popular route (Incheon Intl - San Francisco) can be booked for $329 on average, our data indicates $1,457 when flying from Seoul to San Francisco.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seoul to San Francisco 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 Seoul to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Seoul to San Francisco (average of $276). Flying from Seoul to San Francisco in June is currently the most expensive (average of $357). 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

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
Santa Cruz
Livermore
South San Francisco
Turlock
Antioch
Watsonville
Santa Clara
Manteca
Sunnyvale
Hollister
Vacaville
Foster City
Union City
Vallejo
Burlingame
Redwood City
San Mateo
San Leandro
Lathrop

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Seoul to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Seoul to San Francisco

Discover the top 6 airlines that operate flights from Seoul to San Francisco. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$381Average$521FlexibilityNo cancel feeOn-time67%
United AirlinesCheapest$438Average$581FlexibilityNo cancel feeOn-time69%
Asiana AirlinesCheapest$454Average$668FlexibilityNo cancel feeOn-time76%
Korean AirCheapest$462Average$675FlexibilityNo cancel feeOn-time81%
AIR PREMIACheapest$490Average$673FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$595Average$819FlexibilityNo cancel feeOn-timeN/A

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