Ontario, CA to London, United Kingdom flights

Travelers frequently search for route combinations, such as Ontario and Orlando, New York, Denver, Austin, Las Vegas, Boston, San Francisco, Stockton, Richmond, Jacksonville, Nassau, Bengaluru, Detroit, Indianapolis, Boise, Cincinnati, Oklahoma City, Manchester, Guatemala City, Minneapolis.

Travelers frequently search for route combinations, such as London and Reykjavik, Bucharest, Athens, Dublin, Istanbul, Lisbon, Sofia, Tirana, New York, Edinburgh, Belfast, Larnaca, Glasgow, Málaga, Antalya, Faro, Thessaloniki, Budapest, Madrid, Alicante.

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

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

Yes, it's possible to combine different modes of transport between Ontario and London thanks to our Virtual Interlining technology. Making use of not only flights but also trains and buses between Ontario and London can give rise to new adventures. Read more about how Virtual Interlining works on Kiwi.com Stories.

Virtual Interlining provides a revolutionary way of traveling. You can combine different modes of transport like flights, trains, and buses into one itinerary. And this often saves money. Thanks to the world's largest carrier database, the Kiwi.com search function enables anyone to mix and match different modes of transport easily.

Currently, you can fly between Ontario and London with Frontier Airlines, Spirit Airlines, WestJet, Ryanair, United Airlines.

If you don’t have specific dates for your trip between Ontario and London, 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 Ontario and London, 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.