SFO - USN

$3,027 Find Cheap Flights from San Francisco to Ulsan

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Ulsan departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Ulsan

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Ulsan, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Ulsan, as well as popular online travel agencies
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Flight Deals

Cheap Flights from San Francisco to Ulsan (SFO-USN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Ulsan that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from San Francisco to Ulsan

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SFO-USN
5605 mimulti-stop
Multiple Airlines Logo
USN-SFO
5605 mimulti-stop
Multiple Airlines
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Everything you should know

Our travelers' advice
AI-generated summary based on content written by travel experts
United's Premium Plus offers extra recline and legroom.
American's Main Cabin Extra includes early boarding.
Expert advice
Expert advice
Expert advice
Expert advice
Cheapest round-trip
Multiple Airlines
Mon 9/15
SFO - USN • multi-stop
Cheapest one-way
$3,027
Multiple Airlines
Mon 10/20
SFO - USN • 3 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Ulsan!
Expert advice

Expert advice for your flight from San Francisco to Ulsan

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-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.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

Consider Main Cabin Extra for early boarding and complimentary drinks on long-haul flights.


American Airlines offers Premium Economy with upgraded seats and meals on long international flights.

Read more about American Airlinesby Harriet Baskas
United Airlines

United Polaris offers lie-flat seats and aisle access, ideal for long-haul comfort.


United's Premium Plus offers extra recline and legroom, enhancing comfort on long flights.

Read more about United Airlinesby Stefanie Waldek
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

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
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Booking Insights

KAYAK's insights & trends for San Francisco to Ulsan flights

Get data-powered insights and trends into flights from San Francisco to Ulsan to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from San Francisco to Ulsan?

The average price of all round-trip flights from San Francisco to Ulsan clicked on KAYAK for each day over the last 12 months.

For San Francisco to Ulsan, Sunday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Ulsan back to San Francisco, the best deals are generally found on Saturday, with Monday being the most expensive.

Find deals

Good to know

Cheapest flight$3,027
Flight from San Francisco to Ulsan

When to book flights from San Francisco to Ulsan

Are your dates flexible? Find out the best times to travel from San Francisco to Ulsan based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from San Francisco to Ulsan

  • What is the cheapest flight from San Francisco to Ulsan?

    In the last 3 days, the lowest price for a flight from San Francisco to Ulsan was $3,027 for a one-way ticket.

  • Do I need a passport to fly between San Francisco and Ulsan?

    A passport is required to fly from San Francisco to Ulsan.

  • Which airports will I be using when flying from San Francisco to Ulsan?

    On your way to Ulsan, you’ll fly out from San Francisco. You’ll be landing at Ulsan.

  • Which aircraft models fly most regularly from San Francisco to Ulsan?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from San Francisco to Ulsan?

    SkyTeam is the only airline alliance operating flights between San Francisco and Ulsan.

  • How does KAYAK find such low prices on flights from San Francisco to Ulsan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from San Francisco to Ulsan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from San Francisco to Ulsan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ulsan from San Francisco is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from San Francisco to Ulsan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ulsan with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and USN can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from San Francisco to Ulsan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ulsan from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Everything you need to know for your flight from San Francisco to Ulsan

Information on your arrival and departure airports

San Francisco (SFO)
Ulsan (USN)

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