￥92,460 Cheap Flights from Ontario (ONT) to Seoul (ICN)

View ￥92,460 flight on Tue, Oct 14, 2025Opens in a new window

Featured airlines

  • Plan, book, fly with confidence

  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 40% on select hotels after you book a flight*
  • payments icon
    Earn twice
    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from Ontario to Seoul (ONT-ICN)

Prices were available within the past 7 days and start at ￥92,460 for one-way flights and ￥155,750 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

China Airlines
Mon, Apr 28 - Mon, May 12
ONT
Ontario
ICN
Seoul
￥155,750 Roundtrip, found 1 day ago
￥155,750
Roundtrip
found 1 day ago
Select China Airlines flight, departing Mon, Apr 28 from Ontario to Seoul, returning Mon, May 12, priced at ￥155,750 found 1 day ago
China Airlines
Tue, Oct 14 - Tue, Oct 21
ONT
Ontario
ICN
Seoul
￥155,880 Roundtrip, found 1 hour ago
￥155,880
Roundtrip
found 1 hour ago
Select China Airlines flight, departing Tue, Oct 14 from Ontario to Seoul, returning Tue, Oct 21, priced at ￥155,880 found 1 hour ago
China Airlines
Thu, Aug 21 - Wed, Aug 27
ONT
Ontario
ICN
Seoul
￥156,410 Roundtrip, found 3 days ago
￥156,410
Roundtrip
found 3 days ago
Select China Airlines flight, departing Thu, Aug 21 from Ontario to Seoul, returning Wed, Aug 27, priced at ￥156,410 found 3 days ago
China Airlines
Thu, Sep 11 - Wed, Sep 17
ONT
Ontario
ICN
Seoul
￥156,500 Roundtrip, found 2 days ago
￥156,500
Roundtrip
found 2 days ago
Select China Airlines flight, departing Thu, Sep 11 from Ontario to Seoul, returning Wed, Sep 17, priced at ￥156,500 found 2 days ago
China Airlines
Tue, Oct 14 - Tue, Oct 21
ONT
Ontario
ICN
Seoul
￥159,380 Roundtrip, found 1 hour ago
￥159,380
Roundtrip
found 1 hour ago
Select China Airlines flight, departing Tue, Oct 14 from Ontario to Seoul, returning Tue, Oct 21, priced at ￥159,380 found 1 hour ago
China Airlines
Thu, Sep 11 - Sun, Sep 14
ONT
Ontario
ICN
Seoul
￥161,450 Roundtrip, found 2 days ago
￥161,450
Roundtrip
found 2 days ago
Select China Airlines flight, departing Thu, Sep 11 from Ontario to Seoul, returning Sun, Sep 14, priced at ￥161,450 found 2 days ago
Delta
Mon, Sep 8 - Mon, Sep 22
ONT
Ontario
ICN
Seoul
￥194,870 Roundtrip, found 1 day ago
￥194,870
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Sep 8 from Ontario to Seoul, returning Mon, Sep 22, priced at ￥194,870 found 1 day ago
United
Thu, Apr 24 - Mon, Apr 28
ONT
Ontario
ICN
Seoul
￥209,070 Roundtrip, found 10 hours ago
￥209,070
Roundtrip
found 10 hours ago
Select United flight, departing Thu, Apr 24 from Ontario to Seoul, returning Mon, Apr 28, priced at ￥209,070 found 10 hours ago
Korean Air
Tue, Jul 8 - Tue, Aug 19
ONT
Ontario
ICN
Seoul
￥242,650 Roundtrip, found 3 days ago
￥242,650
Roundtrip
found 3 days ago
Select Korean Air flight, departing Tue, Jul 8 from Ontario to Seoul, returning Tue, Aug 19, priced at ￥242,650 found 3 days ago
American Airlines
Tue, Jul 8 - Tue, Aug 19
ONT
Ontario
ICN
Seoul
￥281,530 Roundtrip, found 3 days ago
￥281,530
Roundtrip
found 3 days ago
Select American Airlines flight, departing Tue, Jul 8 from Ontario to Seoul, returning Tue, Aug 19, priced at ￥281,530 found 3 days ago
Flights from Ontario (ONT) to Seoul (ICN)
Origin airport
Los Angeles - Ontario Intl.
Destination airport
Incheon Intl.
Airlines serving
China Airlines, United
Roundtrip price
￥155,750
Distance
9614 km

Ontario to Seoul Flights

Sometimes you just need to get out of town or maybe you’re looking for a change of scenery. Regardless of the reason, a flight from Ontario to will do just the trick! Go on, plan to see all the famous landmarks and eat your weight in the local cuisine. Your trip is beckoning, so answer the call by packing your suitcase and filling your travel itinerary with exploring Seoul.

Whether you’re flying for business or jet-setting on your personal time, you’ve come to the right place. Here at Expedia.com, we’ll pair you up with ONT to ICN flights that won’t make your bank account wince. Ready to temporarily leave behind Ontario for new horizons? Browse through our cheap airfare, and filter by flight times and dates until you find just what you had in mind. From flights without layovers to ones that arrive early in the morning, you’ll come across plane tickets that suit your travel preferences. You can even bundle your flight to ICN with hotels and car rentals to score even bigger savings.

All set to hit the clouds? Book your travel arrangements with us today and have left-over money to put toward your travel outings and adventures.

Frequently asked questions

How much is a flight from Los Angeles - Ontario Intl. Airport (ONT) to Incheon Intl. Airport (ICN)?
Round-trip journeys from ONT to Seoul–Incheon Intl. Airport start from ￥155,750. This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book now to avoid missing out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Los Angeles - Ontario Intl. Airport (ONT) to ICN?
The majority of flights can be canceled online, but whether you are charged a fee depends on your airline. If you do need to cancel your break, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Ontario Airport to Seoul--Incheon Intl. Airport 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 ONT to Seoul–Incheon Intl. Airport flights, you’ll see a “no change fees” filter for you to select.
How many hours is the flight from ONT to Incheon Intl. Airport (ICN)?
To get through the 16 hours and 32 minutes flight time between ONT and Incheon Airport, it’s wise to come prepared. A device filled with your favorite podcasts is a fantastic start.
How far is the flight from Los Angeles - Ontario Intl. Airport (ONT) to ICN?
With around 9,700 kilometers separating Ontario Airport and Seoul–Incheon Intl. Airport, your flight will be a long one. Pack wisely to make your time in the air more comfortable. Simple things like warm clothing and some noise-canceling headphones can make the biggest difference.
Which airlines fly direct from Ontario Airport to ICN?
You won’t find any airlines operating directly between Ontario Airport and Incheon Airport, so be prepared to make at least one stop on your journey. A layover can be a good way to break up a trip!
Are ONT to Incheon Intl. Airport (ICN) flight tickets cheaper when they're purchased at the last minute?
Booking your trip from ONT to Seoul–Incheon Intl. Airport at the last minute could save you some serious cash. However, it might cost you a whole lot more! If you’d rather play it safe, book well ahead of your departure date. In fact, Expedia has some of the best bargains up to 12 months in advance. If your preferred carrier hasn’t released tickets yet, check back regularly as deals are updated on Expedia all the time.

Explore a world of travel with Expedia

Ontario nearby Airports

Los Angeles

Los Angeles Intl. to Seoul
￥106,980

Burbank

Long Beach

Orange County

*Available to Expedia members.