$327 Cheap Flights from Seoul (ICN) to San Francisco (SFO)

View $327 flight on Fri, Dec 5, 2025Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)

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Cheap Flights from Seoul to San Francisco (ICN-SFO)

Prices were available within the past 7 days and start at $327 for one-way flights and $341 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Oct 25 - Sun, Oct 26
ICN
Seoul
SFO
San Francisco
$341 Roundtrip, found 3 days ago
$341
Roundtrip
found 3 days ago
Select Alaska Airlines flight, departing Sat, Oct 25 from Seoul to San Francisco, returning Sun, Oct 26, priced at $341 found 3 days ago
United
Wed, Oct 22 - Mon, Nov 24
ICN
Seoul
SFO
San Francisco
$445 Roundtrip, found 6 hours ago
$445
Roundtrip
found 6 hours ago
Select United flight, departing Wed, Oct 22 from Seoul to San Francisco, returning Mon, Nov 24, priced at $445 found 6 hours ago
American Airlines
Sat, Nov 8 - Mon, Nov 24
ICN
Seoul
SFO
San Francisco
$457 Roundtrip, found 15 hours ago
$457
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sat, Nov 8 from Seoul to San Francisco, returning Mon, Nov 24, priced at $457 found 15 hours ago
Air Canada
Sat, Oct 18 - Sat, Oct 25
ICN
Seoul
SFO
San Francisco
$482 Roundtrip, found 6 hours ago
$482
Roundtrip
found 6 hours ago
Select Air Canada flight, departing Sat, Oct 18 from Seoul to San Francisco, returning Sat, Oct 25, priced at $482 found 6 hours ago
Air Premia
Mon, Feb 9 - Mon, Feb 16
ICN
Seoul
SFO
San Francisco
$498 Roundtrip, found 2 days ago
$498
Roundtrip
found 2 days ago
Select Air Premia flight, departing Mon, Feb 9 from Seoul to San Francisco, returning Mon, Feb 16, priced at $498 found 2 days ago
Korean Air
Wed, Dec 3 - Mon, Dec 8
ICN
Seoul
SFO
San Francisco
$612 Roundtrip, found 5 hours ago
$612
Roundtrip
found 5 hours ago
Select Korean Air flight, departing Wed, Dec 3 from Seoul to San Francisco, returning Mon, Dec 8, priced at $612 found 5 hours ago
Asiana Airlines
Wed, Dec 3 - Mon, Dec 8
ICN
Seoul
SFO
San Francisco
$623 Roundtrip, found 5 hours ago
$623
Roundtrip
found 5 hours ago
Select Asiana Airlines flight, departing Wed, Dec 3 from Seoul to San Francisco, returning Mon, Dec 8, priced at $623 found 5 hours ago
Delta
Tue, Sep 23 - Thu, Oct 2
ICN
Seoul
SFO
San Francisco
$629 Roundtrip, found 2 days ago
$629
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Sep 23 from Seoul to San Francisco, returning Thu, Oct 2, priced at $629 found 2 days ago
Philippine Airlines
Sat, Nov 1 - Mon, Nov 17
ICN
Seoul
SFO
San Francisco
$714 Roundtrip, found 1 day ago
$714
Roundtrip
found 1 day ago
Select Philippine Airlines flight, departing Sat, Nov 1 from Seoul to San Francisco, returning Mon, Nov 17, priced at $714 found 1 day ago
China Airlines
Wed, Dec 3 - Mon, Dec 8
ICN
Seoul
SFO
San Francisco
$862 Roundtrip, found 5 hours ago
$862
Roundtrip
found 5 hours ago
Select China Airlines flight, departing Wed, Dec 3 from Seoul to San Francisco, returning Mon, Dec 8, priced at $862 found 5 hours ago

Find the cheapest month to fly from Seoul (ICN) to San Francisco (SFO)

November is typically the cheapest month to fly

From $380 - $596 per traveler.

Frequently asked questions

How much does a flight from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO) cost?
Lock in a cheap one-way flight from $327 or cheap return flight from $341 from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between ICN and SFO. You'll usually find the lowest prices during the off-season.
Which airlines fly direct from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Avoid the layovers and fly straight from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO) with 4 carriers, including:

  • United Airlines
  • Asiana Airlines
  • Korean Air

What is the cheapest airline that flies from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Air Premia and Korean Air are some popular carriers offering reasonable fares. Don't forget that flight prices from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO) can change based on travel dates, demand and how early you book. With Expedia's filter tool, you can easily find an ICN to SFO flight that works with your plans and budget.
How many flights per day from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Each day on average, 5 direct flights take off from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO). Choose the departure date that best suits your plans.
What are the most popular departure times for flights from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
More travelers fly between ICN and SFO at 12 PM than at any other time of day. Rather go when it's quieter? Pick a flight outside the busiest times and there's a chance you'll save on your fare as well.
What day of the week has the most flights from ICN to SFO?
Fly on a Friday if you're looking for the biggest selection of flights from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO).
What is the earliest flight from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Catch the earliest flight at around 12:45PM UTC+9, leaving from Incheon Intl. Airport (ICN). You'll be traveling for around 10h 35m, reaching San Francisco Intl. Airport (SFO) at approximately 6:20AM UTC-8.
How long does it take to fly from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Typically, it takes 10 hours and 25 minutes to cover the 5,700 mi from ICN to SFO.
What airline has the least delays from ICN to SFO?
United Airlines has the strongest track record for on-time direct flights from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO), with an on-time rating of 80%. Use the Expedia App to check your flight status before you take off and get notified of any trip changes.
What is the best time to fly from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
To arrive at San Francisco Intl. Airport (SFO) on schedule, choose a flight that takes off from Incheon Intl. Airport (ICN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for San Francisco from Incheon Intl. Airport (ICN)?
If you're on a direct flight from Incheon Intl. Airport (ICN) to San Francisco, San Francisco Intl. Airport (SFO) is the only airport you can touch down at.
Is it cheaper to buy a plane ticket from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO) last-minute?
Last-minute bookings from ICN to SFO are usually more expensive. To lock in the cheapest rates, start looking for flights as soon as possible. That being said, if you can play around with your travel dates, you may score a cheap fare right before you leave.
Is it cheaper to book an ICN to SFO flight and hotel package?
Booking an ICN to SFO flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Choose from our wide range of stays and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Incheon Intl. Airport (ICN) to San Francisco Intl. Airport (SFO)?
Usually, it's possible to cancel or reschedule your ICN to SFO flight. However, if it's been more than 24 hours since booking, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more information on our Customer Service portal.

Travel information

Travel information

Origin airport
Incheon Intl.
Destination airport
San Francisco Intl.
Airlines serving
Air Canada, Air China, Air Premia, Alaska Airlines, All Nippon Airways, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, China Southern Airlines, Delta, EVA Airways, Hawaiian Airlines, Japan Airlines, Korean Air, Philippine Airlines, Singapore Airlines, United, Vietnam Airlines, WestJet
Roundtrip price
$340
Distance
5645 mi
Average flight time
-5 hours -20 mins

Book with confidence

Book with confidence

Seoul to San Francisco Flights

The cheapest times to fly from Seoul to San Francisco

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Seoul to San Francisco are during the month of October. You can find some of the cheapest flights from Seoul to San Francisco with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to San Francisco

Sunday is one of the best days to book for cheap flights from Seoul to San Francisco: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Seoul to San Francisco

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Seoul to San Francisco in 2025. You can also book with separate airlines for your outbound and return journeys, from $327 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Seoul to San Francisco flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Seoul to San Francisco airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Seoul to San Francisco Flights

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