$452 Find Cheap Flights from London to Ontario - Compare and Save

In the last 5 days, the lowest price for a flight from London Heathrow Airport to Ontario was $452 for a one-way ticket and $578 for a round-trip.

Yes, you'll most likely have to show a valid passport before boarding the plane in London and on arrival in Ontario.

London airport is called London Heathrow and the only airport in Ontario is Ontario.

We unfortunately don’t have that data for this specific route.

oneworld is the only airline alliance operating flights between London and Ontario.

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from London to Ontario.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from London is likely to change within 7 days, so travelers know whether to wait or book now.

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to London with another airline. Booking your flights between London and ONT can sometimes prove cheaper using this method.

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from London up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.