Cheap flights from London to Ontario from £291

Travelers frequently search for route combinations, such as London and Istanbul, Tirana, Barcelona, Jeddah, Tel Aviv, Prague, Paris, Athens, Bucharest, Málaga, Marrakesh, Bangkok, Rome, Chișinău, Madrid, Budapest, Edinburgh, New York, Oslo, Agadir.

Travelers frequently search for route combinations, such as Ontario and San Francisco, Guadalajara, Las Vegas, Seattle, Dallas, Houston, Sacramento, Portland, Denver, Atlanta, Chicago, Los Angeles, New York, Toronto, Calgary, Vancouver, Mexico City, Edmonton, Washington, D.C., Orlando.

London is mainly served by Gatwick. But there are other airports nearby, including Heathrow, London Stansted, Luton, London City, London Southend, RAF Northolt.

The main airport in London is Gatwick. It is also served by Birmingham, Bristol, East Midlands, Cardiff, Southampton, Bournemouth, Exeter, Norwich, Humberside.

The main airport in Ontario is Ontario International. It is also served by Tijuana International, San Diego International, John Wayne, Ontario International, Hollywood Burbank, Palm Springs International, Long Beach, Santa Barbara Municipal, Imperial County, Meadows Field.

Currently, you can fly between London and Ontario with Frontier Airlines, United Airlines, Hawaiian Airlines, KLM Royal Dutch Airlines, Ryanair.

If you don’t have specific dates for your trip between London and Ontario, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between London and Ontario, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around London. The main one is Gatwick and other nearby airports include Birmingham, Bristol, East Midlands, Cardiff, Southampton, Bournemouth, Exeter, Norwich, Humberside