$869 Cheap Flights from Los Angeles (LAX) to Ulsan (USN)

View $869 flight on Mon, Feb 2, 2026Opens in a new window

Popular airlines from Los Angeles Intl. (LAX) to Ulsan (USN)

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Cheap Flights from Los Angeles to Ulsan (LAX-USN)

Prices were available within the past 7 days and start at $869 for one-way flights and $1,518 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Mon, Feb 2 - Mon, Feb 9
LAX
Los Angeles
USN
Ulsan
$1,518 Roundtrip, found 6 days ago
$1,518
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Feb 2 from Los Angeles to Ulsan, returning Mon, Feb 9, priced at $1,518 found 6 days ago
Delta
Mon, Feb 2 - Sun, Feb 8
LAX
Los Angeles
USN
Ulsan
$1,519 Roundtrip, found 6 days ago
$1,519
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Feb 2 from Los Angeles to Ulsan, returning Sun, Feb 8, priced at $1,519 found 6 days ago
Delta
Mon, Feb 2 - Thu, Feb 12
LAX
Los Angeles
USN
Ulsan
$1,528 Roundtrip, found 6 days ago
$1,528
Roundtrip
found 6 days ago
Select Delta flight, departing Mon, Feb 2 from Los Angeles to Ulsan, returning Thu, Feb 12, priced at $1,528 found 6 days ago
Delta
Fri, Jan 30 - Mon, Feb 9
LAX
Los Angeles
USN
Ulsan
$1,568 Roundtrip, found 6 days ago
$1,568
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jan 30 from Los Angeles to Ulsan, returning Mon, Feb 9, priced at $1,568 found 6 days ago
Delta
Fri, Jan 30 - Sun, Feb 8
LAX
Los Angeles
USN
Ulsan
$1,569 Roundtrip, found 6 days ago
$1,569
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jan 30 from Los Angeles to Ulsan, returning Sun, Feb 8, priced at $1,569 found 6 days ago
Delta
Fri, Jan 30 - Thu, Feb 12
LAX
Los Angeles
USN
Ulsan
$1,578 Roundtrip, found 6 days ago
$1,578
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jan 30 from Los Angeles to Ulsan, returning Thu, Feb 12, priced at $1,578 found 6 days ago
Delta
Fri, Jan 30 - Fri, Feb 6
LAX
Los Angeles
USN
Ulsan
$1,618 Roundtrip, found 6 days ago
$1,618
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Jan 30 from Los Angeles to Ulsan, returning Fri, Feb 6, priced at $1,618 found 6 days ago
Delta
Wed, Dec 24 - Mon, Dec 29
LAX
Los Angeles
USN
Ulsan
$1,668 Roundtrip, found 2 days ago
$1,668
Roundtrip
found 2 days ago
Select Delta flight, departing Wed, Dec 24 from Los Angeles to Ulsan, returning Mon, Dec 29, priced at $1,668 found 2 days ago
Korean Air
Thu, Dec 25 - Mon, Dec 29
LAX
Los Angeles
USN
Ulsan
$1,669 Roundtrip, found 2 days ago
$1,669
Roundtrip
found 2 days ago
Select Korean Air flight, departing Thu, Dec 25 from Los Angeles to Ulsan, returning Mon, Dec 29, priced at $1,669 found 2 days ago
United
Fri, Sep 18 - Sat, Oct 10
LAX
Los Angeles
USN
Ulsan
$9,843 Roundtrip, found 6 hours ago
$9,843
Roundtrip
found 6 hours ago
Select United flight, departing Fri, Sep 18 from Los Angeles to Ulsan, returning Sat, Oct 10, priced at $9,843 found 6 hours ago

Alternative airports near Ulsan

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Ulsan USN. Cheapest option available. Flights from $1,869
USN
Ulsan
Cheapest
Flights from $1,869
Flights from Los Angeles (LAX) to Ulsan (USN)
Origin airport
Los Angeles Intl.
Destination airport
Ulsan
Roundtrip price
$1,518
Distance
5942 mi

Los Angeles to Ulsan Flights

The cheapest times to fly from Los Angeles to Ulsan

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 Los Angeles to Ulsan are during the month of February. You can find some of the cheapest flights from Los Angeles to Ulsan with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Los Angeles to Ulsan

Sunday is one of the best days to book for cheap flights from Los Angeles to Ulsan: 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 Los Angeles to Ulsan

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 Los Angeles to Ulsan in 2026. You can also book with separate airlines for your outbound and return journeys, from $869 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 Los Angeles to Ulsan 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 Los Angeles to Ulsan 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.

 

Frequently asked questions

How much does a flight from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN) cost?
Secure a cheap one-way flight from $869 or cheap return flight from $1,518 from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN)?
The cheapest month to fly from LAX to USN is February, when there's less demand. Off-peak months are typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN)?
To find the cheapest airline that'll fly you from LAX to USN, use Expedia's filter tool. Tailor your search based on your travel needs, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to see the cheapest fares upfront.
How many flights per day from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN)?
Nonstop flights from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your travel details and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from LAX to USN?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN)?
To reach Ulsan Airport (USN) without delays, choose a flight that leaves from Los Angeles Intl. Airport (LAX) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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.
Is it cheaper to buy a plane ticket from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN) last-minute?
Booking your flight from LAX to USN right before your getaway is generally more expensive. But if you're flexible with your travel times and dates, you could snag a cheap last-minute fare.
Is it cheaper to book a LAX to USN flight and hotel package?
Securing a LAX to USN flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your trip all in one place. Pick from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Los Angeles Intl. Airport (LAX) to Ulsan Airport (USN)?
If you reserved your LAX to USN flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for more information.

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*Available to One Key members.