$172+ 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.

Yes, there are multiple flights from Ontario to London for under $600. The cheapest flight booked recently is on Multiple Airlines for just $548, but on average you can expect to pay $848.

There are currently 9+ open flights from Ontario to London within the next 7 days for less than $1,000.

Flying on United Airlines is currently your cheapest option to London, with prices starting at $652. Additional round-trip tickets that might be worth considering are offered by Delta and British Airways, with the lowest prices starting at $663 and $666, respectively. You may be able to fly from Ontario to London for 11% less than the average price by searching for these airlines.

The cheapest airlines for a one-way flight from Ontario to London are British Airways ($402), Virgin Atlantic ($407), and Delta ($408).

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

ONT stands for Ontario Airport, while LHR stands for London Heathrow Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. London Gatwick Airport (LGW), London Stansted Airport (STN), London Luton Airport (LTN), London City Airport (LCY), London Southend Airport (SEN) are some additional IATA codes for airports related to your trip.

The amount of baggage you can bring on your Ontario to London 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 London 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 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.

Many airlines flying from Ontario to London 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 London 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 flight deals you see on this page were last updated on 11/4.

Currently, November is the cheapest month in which you can book a flight from Ontario to London (average of $649). Flying from Ontario to London in June is currently the most expensive (average of $1,089). 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.