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฿20,360 Cheap Flights from Seoul (ICN) to Ontario Intl. Airport (ONT)

View ฿20,360 flight on Thu, 17 Sept 2026Opens in a new window

Popular airlines from Incheon Intl. Airport (ICN) to Ontario Intl. Airport (ONT)

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Cheap Flights from Seoul (ICN) to Ontario Intl. Airport (ONT)

Prices were available within the past 7 days and start at ฿20,360 for one-way flights and ฿29,230 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, 21 Sept - Mon, 28 Sept
ICN
Seoul
ONT
Ontario
฿29,230 Return, found 12 hours ago
฿29,230
Return
found 12 hours ago
Select United flight, departing Mon, 21 Sept from Seoul to Ontario, returning Mon, 28 Sept, priced at ฿29,230 found 12 hours ago
United
Mon, 21 Sept - Mon, 28 Sept
ICN
Seoul
ONT
Ontario
฿31,050 Return, found 12 hours ago
฿31,050
Return
found 12 hours ago
Select United flight, departing Mon, 21 Sept from Seoul to Ontario, returning Mon, 28 Sept, priced at ฿31,050 found 12 hours ago
Delta
Thu, 24 Sept - Thu, 1 Oct
ICN
Seoul
ONT
Ontario
฿32,930 Return, found 10 hours ago
฿32,930
Return
found 10 hours ago
Select Delta flight, departing Thu, 24 Sept from Seoul to Ontario, returning Thu, 1 Oct, priced at ฿32,930 found 10 hours ago
China Airlines
Mon, 21 Sept - Mon, 28 Sept
ICN
Seoul
ONT
Ontario
฿35,175 Return, found 12 hours ago
฿35,175
Return
found 12 hours ago
Select China Airlines flight, departing Mon, 21 Sept from Seoul to Ontario, returning Mon, 28 Sept, priced at ฿35,175 found 12 hours ago
Korean Air
Thu, 24 Sept - Thu, 1 Oct
ICN
Seoul
ONT
Ontario
฿35,400 Return, found 10 hours ago
฿35,400
Return
found 10 hours ago
Select Korean Air flight, departing Thu, 24 Sept from Seoul to Ontario, returning Thu, 1 Oct, priced at ฿35,400 found 10 hours ago
United
Thu, 17 Sept - Thu, 24 Sept
ICN
Seoul
ONT
Ontario
฿35,985 Return, found 3 days ago
฿35,985
Return
found 3 days ago
Select United flight, departing Thu, 17 Sept from Seoul to Ontario, returning Thu, 24 Sept, priced at ฿35,985 found 3 days ago
United
Thu, 24 Sept - Thu, 1 Oct
ICN
Seoul
ONT
Ontario
฿36,385 Return, found 10 hours ago
฿36,385
Return
found 10 hours ago
Select United flight, departing Thu, 24 Sept from Seoul to Ontario, returning Thu, 1 Oct, priced at ฿36,385 found 10 hours ago
United
Thu, 17 Sept - Thu, 24 Sept
ICN
Seoul
ONT
Ontario
฿36,585 Return, found 3 days ago
฿36,585
Return
found 3 days ago
Select United flight, departing Thu, 17 Sept from Seoul to Ontario, returning Thu, 24 Sept, priced at ฿36,585 found 3 days ago
United
Thu, 17 Sept - Thu, 24 Sept
ICN
Seoul
ONT
Ontario
฿37,450 Return, found 3 days ago
฿37,450
Return
found 3 days ago
Select United flight, departing Thu, 17 Sept from Seoul to Ontario, returning Thu, 24 Sept, priced at ฿37,450 found 3 days ago
American Airlines
Thu, 17 Sept - Thu, 24 Sept
ICN
Seoul
ONT
Ontario
฿39,665 Return, found 3 days ago
฿39,665
Return
found 3 days ago
Select American Airlines flight, departing Thu, 17 Sept from Seoul to Ontario, returning Thu, 24 Sept, priced at ฿39,665 found 3 days ago

Alternative airports near Ontario

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

Select flight to John Wayne SNA. Cheapest option available. Average driving time to city centre is 42 minutes. Flights from ฿32,930
SNA
John Wayne
Cheapest
Average driving time to city centre42 min
Flights from ฿32,930

Frequently asked questions

How much is a flight from Incheon Airport to Los Angeles - Ontario Intl. Airport (ONT)?
Based on fares listed within the last 7 days on Expedia for flights departing within the next year, round-trip journeys from Incheon Airport to Ontario Airport start from ฿29,230. Make your booking ASAP to score the best price for your journey. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Seoul–Incheon Intl. Airport to Ontario Airport?
Every air carrier has its own terms and conditions. If you decide to cancel your trip, head to our Customer Service Portal.
How do I find cheap flights from ICN to ONT that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for ICN to Los Angeles - Ontario Intl. Airport (ONT) flights, you'll see a "no change fees" filter for you to select.
How far is the flight from ICN to Los Angeles - Ontario Intl. Airport (ONT)?
With around 9,700 kilometres separating South Korea and Ontario, your flight will be a long one. Pack wisely and make your trip more comfortable. Simple things like a spare pair of socks and a good neck pillow should be in your carry-on bag.
Which airlines fly direct from ICN to Los Angeles - Ontario Intl. Airport (ONT)?
If you want to travel straight from ICN to Ontario Airport, you'll need to book a flight with one or more stops. Unfortunately, there aren't any airlines that fly directly on this route.
Are Incheon Intl. Airport (ICN) to Los Angeles - Ontario Intl. Airport (ONT) flight tickets cheaper when they're purchased at the last minute?
Late planners can occasionally score a bargain, with some of the cheapest airfares from Seoul–Incheon Intl. Airport to Los Angeles - Ontario Intl. Airport (ONT) showing up a few weeks prior to the departure date. If you'd rather book ahead of time, Expedia compares and updates all the best flight deals continually — as early as 12 months in advance in some cases. It does depend on the carrier though, as not all airlines advertise prices so far in advance.

Travel information

Origin airport
Incheon Intl.
Destination airport
Ontario Intl. Airport
Return price
฿29,230
Distance
9614 km

Book with confidence

Perfect flights from Seoul to Ontario Intl. Airport

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from Seoul to Ontario Intl. Airport. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Incheon Intl. to Ontario Intl. Airport ticket options cater to your travel preferences, with incredible one-way fares from ฿20,360 and roundtrip prices from ฿29,230. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Ontario Intl. Airport and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Ontario Intl. Airport.
Perfect flights from Seoul to Ontario Intl. Airport
*Available to Expedia members.