$319 Find Cheap Flights from Ontario to London Heathrow Airport - Compare and Save

In the last 5 days, the lowest price for a flight from Ontario to London Heathrow Airport was $319 for a one-way ticket and $798 for a round-trip.

A passport is required to fly from Ontario to London Heathrow Airport.

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

oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Ontario and London Heathrow Airport, with oneworld being the most commonly used for this route.

The two airlines most popular with KAYAK users for flights from Ontario to London are Alaska Airlines and Delta. With an average price for the route of $1,592 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $771 and an overall rating of 7.8.

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 Ontario to London Heathrow Airport.

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Ontario 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 London Heathrow Airport with an airline and back to Ontario with another airline. Booking your flights between Ontario and LHR 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 London Heathrow Airport from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.