£392 Cheap Flights from Ontario (ONT) to London (LGW)

Flight 1

Popular airlines from Los Angeles - Ontario Intl. Airport (ONT) to Gatwick Airport (LGW)

  • Be in the know

    Get alerts if flight prices drop or rise*
  • Book smarter

    Save up to 25% on select hotels after you book a flight*
  • Earn twice

    Earn your airline miles on top of our rewards

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

Prices were available within the past 7 days and start at £392 for one-way flights and £811 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Air France
United
Alaska Airlines
JetBlue Airways
JetBlue Airways
Air France
United
JetBlue Airways
Virgin Atlantic

Alternative airports near London

Prices were available within the past 7 days. Prices and availability are subject to change.

Frequently asked questions

Which airlines fly direct from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
Enter ONT to LGW and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
To find a cheap flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
There are approximately 15 connecting flights per day from Ontario International Airport (ONT) to London Gatwick (LGW). Some common connection points include Dallas-Fort Worth International Airport (DFW), Seattle - Tacoma International Airport (SEA), and Denver International Airport (DEN).
What is the earliest flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
The earliest flight from Los Angeles - Ontario Intl. (ONT) to London Gatwick (LGW) typically departs at approximately 12:55 AM local time. This service is operated by American Airlines and British Airways, and it is a seasonal service active in December. An early departure like this can help you maximise your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
How long does it take to fly from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
A flight from ONT to LGW with a layover takes around 24 hours 50 minutes, with the route covering approximately 5,434 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
Select the "Business class" and "First class" filters when looking for ONT to LGW flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) flight with Expedia?
It's easy to earn miles on a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for London from Los Angeles - Ontario Intl. (ONT)?
From Los Angeles - Ontario Intl. (ONT), you can fly into London City (LCY), Heathrow (LHR), London Intl. (YXU) and Gatwick (LGW) in London. Some flights may connect through major hubs like Hartsfield-Jackson Atlanta Intl. (ATL), Dallas-Fort Worth Intl. (DFW), O'Hare Intl. (ORD) before reaching London. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) at the last minute?
Typically, booking a last minute flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) flight and hotel package?
Securing a Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick)?
If you booked your Ontario, CA (ONT-Los Angeles - Ontario Intl.) to London (LGW-Gatwick) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Ontario Intl. Airport
Destination airport
Gatwick
Airlines serving
Air France, Iberia, JetBlue Airways, KLM, Virgin Atlantic
Return price
£811
Distance
8693 km

Explore a world of travel with Expedia

*Available to Expedia members.