$633 Cheap United flights San Francisco (SFO) to Seoul (ICN)

View $633 flight on Thu, Aug 14, 2025Opens in a new window

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$633 Cheap United flights San Francisco (SFO) to Seoul (ICN)

Prices were available within the past 7 days and start at $633 for one-way flights and $662 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Thu, Aug 14 - Thu, Aug 21
SFO
San Francisco
ICN
Seoul
$662 Roundtrip, just found
$662
Roundtrip
just found
Select United flight, departing Thu, Aug 14 from San Francisco to Seoul, returning Thu, Aug 21, priced at $662 just found
United
Tue, Oct 14 - Fri, Oct 31
SFO
San Francisco
ICN
Seoul
$773 Roundtrip, just found
$773
Roundtrip
just found
Select United flight, departing Tue, Oct 14 from San Francisco to Seoul, returning Fri, Oct 31, priced at $773 just found
United
Thu, Aug 14 - Thu, Aug 21
SFO
San Francisco
ICN
Seoul
$827 Roundtrip, just found
$827
Roundtrip
just found
Select United flight, departing Thu, Aug 14 from San Francisco to Seoul, returning Thu, Aug 21, priced at $827 just found
Flights from San Francisco (SFO) to Seoul (ICN)
Origin airport
San Francisco Intl.
Destination airport
Incheon Intl.
Airlines serving
Air Canada, Air China, Air Premia, Alaska Airlines, American Airlines, Asiana Airlines, Cathay Pacific, China Airlines, China Eastern Airlines, China Southern Airlines, Delta, EVA Airways, Emirates, Hawaiian Airlines, Korean Air, Philippine Airlines, Singapore Airlines, United, Vietnam Airlines, WestJet
Popular airline
Asiana Airlines
Distance
5645 mi
Average flight time
28 hours 29 mins

Frequently asked questions

How much is a United Airlines flight from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN)?
Set the "Price (lowest to highest)" filter on Expedia to search for cheap United Airlines round-trip flights from $662 from SFO to ICN. Affordable one-way options from $633 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from SFO to ICN with United Airlines?
January is one of the cheapest months to jet away to Seoul with United Airlines. You could also find great prices on return and one-way tickets in February.
What is the cheapest time to book flights from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) with United Airlines?
To find affordable flights from SFO to ICN with United Airlines, start searching about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another helpful tip? Booking on Sunday can lead to average savings of 17% compared to Friday (the most expensive day).**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does United Airlines fly nonstop from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN)?
Yes, you can travel from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) on any of United Airlines's 14 weekly direct flights. Apply Expedia's "Nonstop" and "Airline" filters to find the United Airlines flight that'll take you to ICN at a time that suits you.
How long does it take to fly from SFO to ICN with United Airlines?
On average, it takes 12h 51m to travel nonstop from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) with United Airlines.
Which day of the week has the most United Airlines flights from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN)?
United Airlines operates the most flights from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN) on Friday. With up to 2 daily departures, you'll get the most options and flexibility on this day.
What is the earliest United Airlines flight from SFO to ICN?
The first flight from SFO to ICN with United Airlines leaves at 10:30AM UTC-8. You'll land at 4:15PM UTC+9. The final United Airlines flight of the day takes off at 11:45PM UTC-8 and arrives at 5:40AM UTC+9. With around 20% fewer cancellations for departures before noon, setting off early is typically the best way to go.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does United Airlines fly into in Seoul?
Jump on a United Airlines flight from San Francisco Intl. Airport (SFO) to Seoul, and you'll likely arrive at Incheon Intl. Airport (ICN). This is the airline's primary hub here.
Why fly with United Airlines from SFO to ICN?
Journey from SFO to ICN with United Airlines and you can look forward to a range of perks starting with a rewarding loyalty program. When booking through Expedia as a United Mileage Plus and One Key™ member, you may also earn OneKeyCash™* to spend on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
What type of plane does United Airlines fly from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN)?
You'll likely be on a Boeing 787-9 or a Boeing 777 when flying United Airlines from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN). However, keep in mind that a different plane may be used due to operational demands.
Can I change or cancel my United Airlines flight from San Francisco Intl. Airport (SFO) to Incheon Intl. Airport (ICN)?
Changes are typically free within 24 hours of making your booking, but your airline may charge a fee after that. For more information about altering your flights, head to your "Trips," select your flight and click on "Manage Booking." If you'd like the freedom to update your itinerary without extra charges, apply the "Changes included" and "No cancel fee" filters when planning your next escape.

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