Find flights
When to book
FAQs

Cheap flights from London Gatwick Airport to Ontario from £318

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Gatwick to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Gatwick (LGW) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 21 November 2025.

Round-trip from

£471

One-way from

£318

Popular in

December

Cheapest in

September

Average price

£484
American Airlines
  • American Airlines
  • 18/2-22/2
  • 4 total stops
  • 69h 31m total
  • London to Ontario
Search Deals
British Airways
  • British Airways
  • 3/2
  • 2 total stops
  • 35h 08m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find flight deals from Gatwick to Ontario

Enter your travel dates to find the best prices.

Cheapest flights from Gatwick to Ontario
Explore the most affordable flight options available from Gatwick to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 November 2025.

Mon 1/1219:40LGW - ONT
2 stops22h 17mIberia
Mon 8/1210:47ONT - LGW
2 stops24h 13mIberia
Deal found 17/11£1,301
Wed 31/1211:55LGW - ONT
2 stops20h 19mMultiple Airlines
Thu 8/106:00ONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 19/11£1,499
Wed 31/1211:55LGW - ONT
2 stops20h 19mMultiple Airlines
Fri 9/106:30ONT - LGW
2 stops20h 25mMultiple Airlines
Deal found 18/11£1,546
Fri 12/1219:40LGW - ONT
2 stops26h 15mBritish Airways
Mon 29/1210:50ONT - LGW
2 stops24h 10mBritish Airways
Deal found 18/11£1,653
Mon 24/1111:55LGW - ONT
2 stops20h 00mMultiple Airlines
Fri 28/1110:50ONT - LGW
2 stops16h 05mMultiple Airlines
Deal found 18/11£1,675
Mon 22/1211:55LGW - ONT
2 stops20h 10mMultiple Airlines
Wed 7/108:55ONT - LGW
2 stops18h 00mMultiple Airlines
Deal found 19/11£1,692
Thu 18/1211:55LGW - ONT
2 stops20h 19mMultiple Airlines
Thu 25/1206:00ONT - LGW
2 stops20h 55mMultiple Airlines
Deal found 18/11£1,938
Thu 18/1211:55LGW - ONT
2 stops20h 19mMultiple Airlines
Wed 31/1210:44ONT - LGW
2 stops16h 11mMultiple Airlines
Deal found 20/11£1,987
Mon 29/1211:55LGW - ONT
2 stops20h 10mMultiple Airlines
Sun 25/109:45ONT - LGW
2 stops17h 10mMultiple Airlines
Deal found 18/11£2,493
Mon 29/1211:55LGW - ONT
2 stops20h 10mMultiple Airlines
Mon 5/110:44ONT - LGW
2 stops16h 11mMultiple Airlines
Deal found 18/11£2,519
Sat 20/1205:55LGW - ONT
2 stops26h 19mMultiple Airlines
Fri 2/110:44ONT - LGW
2 stops27h 51mMultiple Airlines
Deal found 18/11£2,638

Cheapflights Fare Finder

 
Customise your flight search to find flights from Gatwick to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 21 November 2025.
Use the filters below to find and compare flights from London Gatwick Airport to Ontario that are best for you.

Fly from

Gatwick

Fly to

Ontario

Route

Depart

Return

Price

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 18/2

11:20-22:31

2 stops43h 11m

Ontario

Sun 22/2

22:40-09:00

2 stops26h 20m

£471

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 3/1

12:30-23:46

2 stops43h 16m

Ontario

Sat 10/1

15:09-09:00

2 stops33h 51m

£1,017

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 4/5

07:00-22:38

2 stops23h 38m

Ontario

Sat 9/5

23:25-16:20

2 stops32h 55m

£1,113

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 1/12

19:40-09:57

2 stops22h 17m

Ontario

Mon 8/12

10:47-19:00

2 stops24h 13m

£1,301

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 31/12

11:55-00:14

2 stops20h 19m

Ontario

Thu 8/1

06:00-10:55

2 stops20h 55m

£1,499

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 12/12

19:40-13:55

2 stops26h 15m

Ontario

Mon 29/12

10:50-19:00

2 stops24h 10m

£1,653

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 22/12

11:55-00:05

2 stops20h 10m

Ontario

Wed 7/1

08:55-10:55

2 stops18h 00m

£1,692

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 18/12

11:55-00:14

2 stops20h 19m

Ontario

Thu 25/12

06:00-10:55

2 stops20h 55m

£1,938

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 18/12

11:55-00:14

2 stops20h 19m

Ontario

Wed 31/12

10:44-10:55

2 stops16h 11m

£1,987

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 3/1

05:55-00:14

2 stops26h 19m

Ontario

Sat 4/4

11:30-22:25

2 stops26h 55m

£2,069

Flights are sorted by cheapest return flights first.

Deals found on 19/11

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Gatwick to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Gatwick with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Ontario

What is the cheapest month to book a flight from London Gatwick Airport to Ontario?

Currently, September is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of £245). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £477). 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.

Related info for your journey

Find useful and relevant information for your journey from Gatwick to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Ontario from London Gatwick?

    Located just 3.1 mi from the city center, Ontario is the airport most travelers will use when flying to Ontario from London Gatwick. Booking flights from London Gatwick to Ontario (ONT) should be relatively easy as there are 0 daily inbound flights from London Gatwick from 0 different airlines.

  • How long is the flight from London Gatwick Airport to Ontario?

    Departing from London Gatwick Airport to Ontario will take you 43h 11m. Airlines will cover a distance of 5430 mi. This flight may include one or multiple stops.

  • Can I find deals for flights from Gatwick to Ontario that include hotel bookings?

    Yes. In addition to deals on Gatwick to Ontario flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Gatwick to Ontario?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Gatwick to Ontario.

  • Can I find deals for business class flights from Gatwick to Ontario?

    Yes. Cheapflights offers flight deals from Gatwick to Ontario by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London Gatwick Airport to Ontario?

    Currently, September is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of £245). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £477). 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Gatwick to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Los Angeles flights
Heathrow to San Francisco flights
Heathrow to Las Vegas flights
Gatwick to Los Angeles flights
London City to Los Angeles flights
Gatwick to Las Vegas flights
Gatwick to San Francisco flights
Stansted to Los Angeles flights
Heathrow to Ontario flights
London City to Las Vegas flights
London City to San Francisco flights
Heathrow to Santa Ana flights
Luton to Los Angeles flights
Heathrow to San Jose flights
Heathrow to Burbank flights
Heathrow to Oakland flights
Heathrow to San Diego flights
Stansted to San Francisco flights
Stansted to Las Vegas flights
Gatwick to Oakland flights
Luton to San Francisco flights
Gatwick to San Jose flights
Gatwick to Santa Ana flights
Gatwick to Burbank flights
Luton to Las Vegas flights
Heathrow to Long Beach flights
Gatwick to San Diego flights
London City to San Diego flights
Gatwick to Sacramento flights
Heathrow to Santa Rosa flights
London City to Burbank flights
Heathrow to Sacramento flights
London City to Sacramento flights
London City to Santa Ana flights
Stansted to San Diego flights
London City to Oakland flights
Heathrow to Reno flights
Heathrow to Medford flights
London City to San Jose flights
Heathrow to Palm Springs flights
Gatwick to Reno flights
Southend to San Francisco flights
Southend to Los Angeles flights
Heathrow to Santa Barbara flights
London City to Ontario flights
Gatwick to Tijuana flights
Heathrow to Tijuana flights
London City to Santa Barbara flights
Heathrow to San Luis Obispo flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Gatwick to Ontario?

Cheapflights makes it easy to find Gatwick to Ontario flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Gatwick to Ontario?

Millions of users choose and trust Cheapflights to book the best flight deals from Gatwick to Ontario for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Gatwick to Ontario with no change fees?

Need flexible booking options for your flight to Ontario from Gatwick? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Gatwick to Ontario become cheaper?

Yes, Cheapflights offers price alerts on Gatwick to Ontario flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.