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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 1/18. 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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Philippine Airlines Logo
11:25 pm - 7:35 pmSFO-ICN
28h 10m1 stop
Philippine Airlines Logo
8:10 am - 8:15 pmICN-SFO
28h 05m1 stop
$642Philippine Airlines
Find Deal
Sun, Apr 19 - Sun, Apr 26
Multiple Airlines Logo
9:10 am - 6:35 pmSFO-ICN
17h 25m1 stop
Multiple Airlines Logo
6:20 pm - 1:00 pmICN-SFO
10h 40mnonstop
$644Multiple Airlines
Find Deal
Mon, May 11 - Mon, May 25
Multiple Airlines Logo
10:30 pm - 7:25 pmSFO-ICN
27h 55m1 stop
Multiple Airlines Logo
6:55 pm - 12:30 pmICN-SFO
10h 35mnonstop
$645Multiple Airlines
Find Deal
Mon, Feb 23 - Fri, Mar 6
Multiple Airlines Logo
10:30 pm - 7:25 pmSFO-ICN
27h 55m1 stop
Multiple Airlines Logo
6:55 pm - 12:30 pmICN-SFO
10h 35mnonstop
$646Multiple Airlines
Find Deal
Tue, Feb 24 - Mon, Mar 2
Air China Logo
1:00 pm - 4:35 pmSFO-ICN
35h 35m1 stop
Air China Logo
5:50 pm - 10:30 amICN-SFO
32h 40m1 stop
$651Air China
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Sat, Mar 28 - Fri, Apr 3
China Southern Logo
12:35 am - 1:50 pmSFO-ICN
45h 15m2 stops
China Southern Logo
4:45 pm - 8:30 pmICN-SFO
43h 45m2 stops
$652China Southern
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Mon, Mar 16 - Sun, Mar 29
Air China Logo
1:00 pm - 1:05 pmSFO-GMP
32h 05m1 stop
Air China Logo
2:25 pm - 10:30 amGMP-SFO
36h 05m1 stop
$682Air China
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Sat, Apr 18 - Fri, May 1
Japan Airlines Logo
12:50 pm - 10:05 pmSFO-GMP
16h 15m1 stop
Japan Airlines Logo
12:05 pm - 10:15 amGMP-SFO
15h 10m1 stop
$844Japan Airlines
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Mon, Dec 8 - Mon, Dec 15
Japan Airlines Logo
1:55 pm - 10:55 amSFO-GMP
29h 00m1 stop
Japan Airlines Logo
8:00 am - 11:25 amGMP-SFO
19h 25m1 stop
$849Japan Airlines
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Wed, Mar 11 - Wed, Mar 25
Japan Airlines Logo
12:55 pm - 10:05 pmSFO-GMP
16h 10m1 stop
Japan Airlines Logo
7:40 pm - 11:25 amGMP-SFO
31h 45m1 stop
$851Japan Airlines
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Tue, Mar 3 - Tue, Mar 24

United Airlines flights from San Francisco to Seoul

Our best United Airlines deals on San Francisco to Seoul flight tickets
United Airlines
Dec 2
SFO11:45 pmSan Francisco
12h 55m
ICN5:40 amIncheon Intl
Dec 19
ICN6:00 pmIncheon Intl
10h 35m
SFO11:35 amSan Francisco
$661
Find similar
United Airlines
Jan 15
SFO10:30 amSan Francisco
12h 45m
ICN4:15 pmIncheon Intl
Jan 24
ICN6:00 pmIncheon Intl
10h 35m
SFO11:35 amSan Francisco
$663
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Air China flights from San Francisco to Seoul

Our best Air China deals on San Francisco to Seoul flight tickets
Air China
Mar 28
SFO1:00 pmSan Francisco
35h 35m
1 stop
ICN4:35 pmIncheon Intl
Apr 3
ICN5:50 pmIncheon Intl
32h 40m
1 stop
SFO10:30 amSan Francisco
$651
Find similar
Air China
Mar 18
SFO1:00 pmSan Francisco
30h 40m
1 stop
ICN11:40 amIncheon Intl
Apr 1
ICN10:50 amIncheon Intl
15h 40m
1 stop
SFO10:30 amSan Francisco
$654
Find similar
Air China
Apr 18
SFO1:00 pmSan Francisco
31h 35m
1 stop
ICN12:35 pmIncheon Intl
May 12
ICN5:50 pmIncheon Intl
32h 40m
1 stop
SFO10:30 amSan Francisco
$682
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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 November 26, 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

Sun 4/19

11:25 pm-7:35 pm

1 stop28h 10m

Incheon Intl

Sun 4/26

8:10 am-8:15 pm

1 stop28h 05m

$642

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Mon 5/11

9:10 am-6:35 pm

1 stop17h 25m

Incheon Intl

Mon 5/25

6:20 pm-1:00 pm

Nonstop10h 40m

$644

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Mon 2/23

10:30 pm-7:25 pm

1 stop27h 55m

Incheon Intl

Fri 3/6

6:55 pm-12:30 pm

Nonstop10h 35m

$645

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Tue 2/24

10:30 pm-7:25 pm

1 stop27h 55m

Incheon Intl

Mon 3/2

6:55 pm-12:30 pm

Nonstop10h 35m

$646

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Sat 3/28

1:00 pm-4:35 pm

1 stop35h 35m

Incheon Intl

Fri 4/3

5:50 pm-10:30 am

1 stop32h 40m

$651

San FranciscoIncheon

SFO - ICN

SFOICN

San Francisco

Mon 3/16

12:35 am-1:50 pm

2 stops45h 15m

Incheon Intl

Sun 3/29

4:45 pm-8:30 pm

2 stops43h 45m

$652

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Sat 4/18

1:00 pm-1:05 pm

1 stop32h 05m

Seoul Gimpo Intl

Fri 5/1

2:25 pm-10:30 am

1 stop36h 05m

$682

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Mon 12/8

12:50 pm-10:05 pm

1 stop16h 15m

Seoul Gimpo Intl

Mon 12/15

12:05 pm-10:15 am

1 stop15h 10m

$844

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Wed 3/11

1:55 pm-10:55 am

1 stop29h 00m

Seoul Gimpo Intl

Wed 3/25

8:00 am-11:25 am

1 stop19h 25m

$849

San FranciscoSeoul

SFO - GMP

SFOGMP

San Francisco

Tue 3/3

12:55 pm-10:05 pm

1 stop16h 10m

Seoul Gimpo Intl

Tue 3/24

7:40 pm-11:25 am

1 stop31h 45m

$851

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 typical price of a round-trip flight between San Francisco and Seoul?

What is the cheapest month to fly to Seoul?

The month of August is another great option to travel to Seoul, with average flight prices from San Francisco averaging around $662.

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 $793. 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 $885.

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 $851 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 $706 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.

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

As of November 2025, prices for San Francisco to Seoul flights are approximately 44% 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

$377

Fastest flight time

12h 45m

Direct flights

Every day

Airports in Seoul

1 airport
The best one-way flight to Seoul from San Francisco in the past 72 hours is $377. 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 is 1 airport near Seoul: Incheon Intl (ICN)
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  • 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 $610Free CancellationRating
8.3
71 reviews
Search AIR PREMIA flights
China EasternPriceFrom $622Free CancellationRating
7.2
178 reviews
Search China Eastern flights
Asiana AirlinesPriceFrom $648Free CancellationRating
8.2
490 reviews
Search Asiana Airlines flights
Singapore AirlinesPriceFrom $651Free CancellationRating
8.1
1,409 reviews
Search Singapore Airlines flights
United AirlinesPriceFrom $660Free CancellationRating
7.4
9,046 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $672Free CancellationRating
8.0
11,354 reviews
Search Alaska Airlines flights
Korean AirPriceFrom $775Free CancellationRating
8.4
1,170 reviews
Search Korean Air flights
Air CanadaPriceFrom $799Free CancellationRating
7.1
10,476 reviews
Search Air Canada flights
Cathay PacificPriceFrom $805Free CancellationRating
7.6
1,068 reviews
Search Cathay Pacific flights
Vietnam AirlinesPriceFrom $833Free CancellationRating
7.6
214 reviews
Search Vietnam Airlines 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 $775 round-trip, up to an average price of $919. 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, 71 ratings). AIR PREMIA flies from San Francisco to Seoul around 4 times per week, with deals starting from $610 round-trip and rising to an average price of around $807.

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