Cheap flights from Seoul to Ontario from $426

Travelers frequently search for route combinations, such as Seoul and San Francisco, Los Angeles, Honolulu, New York, Tokyo, Saipan, Minneapolis, Bangkok, Manila, San Diego, Osaka, Jeju City, Seattle, Dallas, Hagåtña, Houston, Portland, Taipei, Fukuoka, Hong Kong.

Travelers frequently search for route combinations, such as Ontario and San Francisco, Las Vegas, Dallas, Guadalajara, Seattle, Sacramento, Houston, Portland, Denver, Atlanta, Chicago, New York, Los Angeles, Mexico City, Washington, D.C., Rome, Orlando, St. Louis, Columbus, Fargo.

Seoul is mainly served by Incheon International. But there are other airports nearby, including Gimpo International, Seoul Air Base.

The main airport in Seoul is Incheon International. It is also served by Daegu International, Cheongju International, Wonju, Gunsan.

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, Ontario International, John Wayne, Palm Springs International, Hollywood Burbank, Santa Barbara Municipal, Imperial County, Hawthorne Municipal, Long Beach.

Currently, you can fly between Seoul and Ontario with Frontier Airlines, Hawaiian Airlines, Korean Air, Starlux Airlines, Alaska Airlines.

If you don’t have specific dates for your trip between Seoul and Ontario, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Seoul and Ontario, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Seoul. The main one is Incheon International and other nearby airports include Daegu International, Cheongju International, Wonju, Gunsan