Cheap flights from Ontario (ONT) to Heathrow (LHR) from $399

If you book a flight to London Heathrow from Ontario, you will be flying from Ontario, which is the city’s only airport. Ontario (ONT) is located 3.1 mi from the center of Ontario. There are 0 flights from Ontario to London Heathrow per day from 6 different airlines.

Yes, there are multiple flights from Ontario to London Heathrow Airport for under $600. The cheapest flight booked recently is on British Airways for just $546, but on average you can expect to pay $599.

There are currently 20+ open flights from Ontario to London Heathrow Airport within the next 7 days for less than $900.

According to our current data, British Airways ($546), Delta ($568), and Iberia ($571) offers the cheapest pricing from Ontario to London Heathrow Airport. British Airways is 24% cheaper than the average price of flights available within the next 90 days to this destination.

To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $399. American Airlines flights start at $404 while deals on British Airways start at $422 one-way.

These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a Ontario Airport to London Heathrow Airport flight would often be abbreviated as a ONT to LHR flight.

The amount of baggage you can bring on your Ontario to Heathrow flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

Yes, Cheapflights allows you to browse and filter Ontario to Heathrow flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

Many airlines flying from Ontario to Heathrow offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

Yes, you can often find last-minute deals on Ontario to Heathrow flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

The Ontario to London Heathrow Airport flight deals you see on this page were last updated on 6/7.

When booking a flight from Ontario to London Heathrow Airport, you may want to consider flying on American Airlines, British Airways or Delta as they are the most popular for this route.

Currently, November is the cheapest month in which you can book a flight from Ontario to London Heathrow Airport (average of $653). Flying from Ontario to London Heathrow Airport in June is currently the most expensive (average of $1,102). 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.