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Cheap flights from San Francisco to Seoul from $349

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Seoul departing on 4/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from San Francisco to Seoul

Cheap round-trip flights

Enter your travel dates to find the best prices.
China Southern Logo
12:35 am - 1:55 pm
SFO
-
ICN
45h 20m2 stops
China Southern Logo
4:45 pm - 8:30 pm
ICN
-
SFO
43h 45m2 stops
$643China Southern
Mon, Apr 6 - Sun, Apr 19
China Southern Logo
12:35 am - 3:25 pm
SFO
-
ICN
22h 50m1 stop
China Southern Logo
4:45 pm - 8:30 pm
ICN
-
SFO
43h 45m2 stops
$645China Southern
Tue, Apr 7 - Wed, May 27
AIR PREMIA Logo
2:30 pm - 8:30 pm
SFO
-
ICN
13h 00mnonstop
AIR PREMIA Logo
6:55 pm - 12:30 pm
ICN
-
SFO
10h 35mnonstop
$648AIR PREMIA
Wed, Jan 7 - Wed, Jan 14
Multiple Airlines Logo
10:30 pm - 7:25 pm
SFO
-
ICN
27h 55m1 stop
Multiple Airlines Logo
6:55 pm - 1:30 pm
ICN
-
SFO
10h 35mnonstop
$650Multiple Airlines
Mon, Mar 2 - Wed, Mar 11
AIR PREMIA Logo
2:30 pm - 8:30 pm
SFO
-
ICN
13h 00mnonstop
AIR PREMIA Logo
6:55 pm - 12:30 pm
ICN
-
SFO
10h 35mnonstop
$651AIR PREMIA
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
10:30 pm - 7:25 pm
SFO
-
ICN
27h 55m1 stop
Multiple Airlines Logo
6:55 pm - 1:30 pm
ICN
-
SFO
10h 35mnonstop
$655Multiple Airlines
Wed, Mar 4 - Fri, Mar 13
Air China Logo
1:00 pm - 1:05 pm
SFO
-
GMP
32h 05m1 stop
Air China Logo
2:25 pm - 10:30 am
GMP
-
SFO
36h 05m1 stop
$752Air China
Sat, Apr 25 - Fri, May 8
Air China Logo
1:00 pm - 1:05 pm
SFO
-
GMP
32h 05m1 stop
Air China Logo
2:25 pm - 10:30 am
GMP
-
SFO
36h 05m1 stop
$771Air China
Sat, Apr 4 - Fri, Apr 10
China Eastern Logo
5:55 am - 11:00 am
SFO
-
GMP
36h 05m2 stops
China Eastern Logo
8:50 pm - 9:00 am
GMP
-
SFO
29h 10m1 stop
$829China Eastern
Fri, Jan 9 - Sun, Jan 25
China Eastern Logo
8:25 am - 11:00 am
SFO
-
GMP
33h 35m2 stops
China Eastern Logo
8:50 pm - 9:00 am
GMP
-
SFO
29h 10m1 stop
$874China Eastern
Fri, Jan 23 - Wed, Jan 28

Philippine Airlines flights from San Francisco to Seoul

Our best Philippine Airlines deals on San Francisco to Seoul flight tickets
Philippine Airlines
Mar 2
SFO10:30 pmSan Francisco
38h 40m
1 stop
ICN6:10 amIncheon Intl
Mar 17
ICN7:30 amIncheon Intl
29h 00m
1 stop
SFO8:30 pmSan Francisco
$667
Find similar
Philippine Airlines
Mar 2
SFO10:30 pmSan Francisco
27h 55m
1 stop
ICN7:25 pmIncheon Intl
Mar 22
ICN7:30 amIncheon Intl
29h 00m
1 stop
SFO8:30 pmSan Francisco
$670
Find similar
Philippine Airlines
Mar 14
SFO11:30 pmSan Francisco
27h 55m
1 stop
ICN7:25 pmIncheon Intl
Apr 21
ICN7:20 amIncheon Intl
29h 50m
1 stop
SFO9:10 pmSan Francisco
$697
Find similar

China Southern flights from San Francisco to Seoul

Our best China Southern deals on San Francisco to Seoul flight tickets
China Southern
Apr 6
SFO12:35 amSan Francisco
45h 20m
2 stops
ICN1:55 pmIncheon Intl
Apr 19
ICN4:45 pmIncheon Intl
43h 45m
2 stops
SFO8:30 pmSan Francisco
$643
Find similar
China Southern
Apr 7
SFO12:35 amSan Francisco
22h 50m
1 stop
ICN3:25 pmIncheon Intl
May 27
ICN4:45 pmIncheon Intl
43h 45m
2 stops
SFO8:30 pmSan Francisco
$645
Find similar
China Southern
Mar 12
SFO12:35 amSan Francisco
29h 15m
2 stops
ICN9:50 pmIncheon Intl
Mar 23
ICN10:55 amIncheon Intl
25h 45m
2 stops
SFO8:40 pmSan Francisco
$652
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Seoul 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from San Francisco to Seoul that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Mon 4/6

12:35 am-1:55 pm

2 stops45h 20m

Incheon Intl

Sun 4/19

4:45 pm-8:30 pm

2 stops43h 45m

$643

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Tue 4/7

12:35 am-3:25 pm

1 stop22h 50m

Incheon Intl

Wed 5/27

4:45 pm-8:30 pm

2 stops43h 45m

$645

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Wed 1/7

2:30 pm-8:30 pm

Nonstop13h 00m

Incheon Intl

Wed 1/14

6:55 pm-12:30 pm

Nonstop10h 35m

$648

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Mon 3/2

10:30 pm-7:25 pm

1 stop27h 55m

Incheon Intl

Wed 3/11

6:55 pm-1:30 pm

Nonstop10h 35m

$650

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sat 1/24

2:30 pm-8:30 pm

Nonstop13h 00m

Incheon Intl

Sat 1/31

6:55 pm-12:30 pm

Nonstop10h 35m

$651

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Wed 3/4

10:30 pm-7:25 pm

1 stop27h 55m

Incheon Intl

Fri 3/13

6:55 pm-1:30 pm

Nonstop10h 35m

$655

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Sat 4/25

1:00 pm-1:05 pm

1 stop32h 05m

Seoul Gimpo Intl

Fri 5/8

2:25 pm-10:30 am

1 stop36h 05m

$752

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Sat 4/4

1:00 pm-1:05 pm

1 stop32h 05m

Seoul Gimpo Intl

Fri 4/10

2:25 pm-10:30 am

1 stop36h 05m

$771

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Fri 1/9

5:55 am-11:00 am

2 stops36h 05m

Seoul Gimpo Intl

Sun 1/25

8:50 pm-9:00 am

1 stop29h 10m

$829

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Fri 1/23

8:25 am-11:00 am

2 stops33h 35m

Seoul Gimpo Intl

Wed 1/28

8:50 pm-9:00 am

1 stop29h 10m

$874

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Seoul from

How to get the cheapest flight ticket from San Francisco to Seoul

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Seoul?

The month of November is another great option to travel to Seoul, with average flight prices from San Francisco averaging around $661.

What is the cheapest day to depart on your flight to Seoul?

According to our data, Monday is the cheapest day to fly to Seoul from San Francisco. The lowest ticket price found for a Monday departure recently was $787. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Seoul is Saturday, with ticket prices averaging around $886.

What is the cheapest time of day to depart on your flight to Seoul?

Flying to Seoul from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $754 when looking at flights departing in the afternoon. In the morning is when there is more demand to fly to Seoul, so prices are often more expensive at around $852 per ticket.

What is the cheapest San Francisco to Seoul flight route?

Fly from San Francisco to Incheon Intl for the best San Francisco - Seoul flight prices

How far in advance should I book a flight to Seoul?

You are more likely to see cheaper flights to Seoul from San Francisco when booking week ahead of your departure date. In general, you can expect to find flights to Seoul for around $840 when searching week out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seoul from San Francisco for as low as $713 on momondo.

What cabin class options are available on San Francisco to Seoul flights?

There are 4 cabin classes available to choose from on San Francisco to Seoul flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Francisco to Seoul flights?

No. A direct flight is the cheapest option for a flight between San Francisco to Seoul.

How have San Francisco to Seoul flight prices changed over time?

As of December 2025, prices for San Francisco to Seoul flights are approximately 52% cheaper when compared to flights at the same time last year.

When to book flights from San Francisco to Seoul

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Seoul according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Seoul (SFO to SEL) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Seoul

Best Price Found

$381

Fastest flight time

12h 45m

Direct flights

Every day

Airports in Seoul

2 airports
The best one-way flight to Seoul from San Francisco in the past 72 hours is $381. The best round-trip flight deal from San Francisco to Seoul found on momondo in the last 72 hours is $661.
The fastest flight from San Francisco to Seoul takes 12h 45m
Direct flights go from San Francisco to Seoul every day.
There are 2 airports in Seoul. From San Francisco there are direct flights to Incheon Intl (ICN).
Search flight deals

  • How far is San Francisco to Seoul by plane?

    Seoul is 5606.2 mi away from San Francisco. A reasonable flight in good conditions will take 12h 45m.

  • When did momondo last update prices for flights from San Francisco Airport to Seoul?

    Prices for flights from San Francisco Airport to Seoul were last updated today.

  • How many operators does momondo search for flights from San Francisco Airport to Seoul?

  • How old do you have to be to fly from San Francisco Airport to Seoul?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from San Francisco Airport to Seoul.

  • What documentation or ID do you need to fly to Seoul?

    The necessary travel and health documents for your Seoul trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Francisco to Seoul?

  • What is the most popular airline from San Francisco to Seoul?

Best airlines flying from San Francisco to Seoul

Compare and see reviews for airlines that fly from San Francisco to Seoul with momondo
Airline
Rating
Free Cancellation
Price
AIR PREMIAPriceFrom $608Free CancellationRating
8.3
72 reviews
Search AIR PREMIA flights
China EasternPriceFrom $622Free CancellationRating
7.2
178 reviews
Search China Eastern flights
Japan AirlinesPriceFrom $630Free CancellationRating
8.3
1,651 reviews
Search Japan Airlines flights
Asiana AirlinesPriceFrom $648Free CancellationRating
8.2
492 reviews
Search Asiana Airlines flights
Singapore AirlinesPriceFrom $651Free CancellationRating
8.1
1,412 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $660Free CancellationRating
7.4
9,095 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $674Free CancellationRating
8.0
11,429 reviews
Search Alaska Airlines flights
Korean AirPriceFrom $790Free CancellationRating
8.4
1,184 reviews
Search Korean Air flights
Air CanadaPriceFrom $799Free CancellationRating
7.1
10,514 reviews
Search Air Canada flights
Cathay PacificPriceFrom $805Free CancellationRating
7.6
1,093 reviews
Search Cathay Pacific flights

  • Korean Air Flights From San Francisco to Seoul

    Korean Air is one of the most popular airlines flying from San Francisco to Seoul, operating 7 flights/week on average for this route. A good Korean Air flight deal for San Francisco to Seoul starts from $790 round-trip, up to an average price of $943. Our users have rated Korean Air at 8.4/10.

  • AIR PREMIA Flights From San Francisco to Seoul

    Another popular option for San Francisco to Seoul flights is AIR PREMIA (8.3/10, 72 ratings). AIR PREMIA flies from San Francisco to Seoul around 4 times per week, with deals starting from $608 round-trip and rising to an average price of around $809.

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Seoul?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to Seoul. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from San Francisco to Seoul with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Seoul from San Francisco with this policy.

How can momondo help me find flights from San Francisco to Seoul?

Once all potential San Francisco to Seoul flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Francisco to Seoul right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Francisco to Seoul flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to South Korea

Fly into one of these airports located in Seoul

Airports listed have a maximum distance of 30.3 mi from Seoul
Seoul Gimpo Intl Airport
Incheon Intl Airport