$296+ Cheap flights from Ontario (ONT) to Southeast Asia

For a flight from Ontario to Southeast Asia, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

There are many flights that can get you from Ontario to Southeast Asia in 24h 35m. Fly via Korean Air, Delta, or United Airlines to get the fastest option. The distance from Ontario to Southeast Asia is about 7664 mi. Both multi-stop and nonstop flights can be found to your destination and back.

To fly one-way, consider booking your trip with Korean Air, which is currently one of the cheapest options available, starting at $341. China Airlines flights start at $374 while deals on United Airlines start at $389 one-way.

When deciding which route to take from Ontario to Southeast Asia consider Ontario - Manila Ninoy Aquino Intl, Ontario - Bangkok Suvarnabhumi or Ontario - Ho Chi Minh City as they are the most popular.

Yes. In addition to deals on Ontario to Southeast Asia flights, Cheapflights offers vacation packages that include both flights and hotel.

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Southeast Asia.

Yes. Cheapflights offers flight deals from Ontario to Southeast Asia by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Currently, January is the cheapest month in which you can book a flight from Ontario to Southeast Asia (average of $503). Flying from Ontario to Southeast Asia in June is currently the most expensive (average of $748). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.