$319+ Cheap flights from Ontario (ONT) to London (LON)

Most people fly from Ontario (ONT) if they book a flight from Ontario to London. On average, Ontario has 0 outbound flights to London per day from 5 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

United Airlines, Delta, and Iberia can get you from Ontario to London in just under 15h 35m. Your travel time can differ by up to 4h 55m. Airlines will cover a distance of 5422 mi. This flight may include one or multiple stops.

Flying on Delta is currently your cheapest option to London, with prices starting at $570. Additional round-trip tickets that might be worth considering are offered by KLM and American Airlines, with the lowest prices starting at $580 and $624, respectively. You may be able to fly from Ontario to London for 26% less than the average price by searching for these airlines.

The most popular flight routes from Ontario to London are Ontario - London Heathrow, Ontario - London Gatwick and Ontario - London City.

Yes. In addition to deals on Ontario to London 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 London.

Yes. Cheapflights offers flight deals from Ontario to London 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, October is the cheapest month in which you can book a flight from Ontario to London (average of $222). Flying from Ontario to London in June is currently the most expensive (average of $572). 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.