Cheap Flights from London (LGW) to Ontario (ONT)

Prices were available within the past 7 days and starts at £359 for one-way flights and £380 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Flight from London to Ontario route information

Origin Airport Gatwick
Destination Airport Los Angeles - Ontario Intl.
Airlines Serving American Airlines
Flight Price £380
Distance 8,693 km

Cheap London to Ontario (LGW-ONT) flights: frequently asked questions

Compare flights from London to Ontario easily and book in confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from London to Ontario. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Los Angeles - Ontario Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Gatwick to Los Angeles - Ontario Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Gatwick ( LGW) to Los Angeles - Ontario Intl. (ONT) 

The easiest way to view the best deals on flights from London to Ontario today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Gatwick to Los Angeles - Ontario Intl. start at just £380 and range up to £402.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near London and Ontario
  • booking your flight during March, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why book your London to Ontario flights with Expedia?  

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Gatwick to Los Angeles - Ontario Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.