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Cheap flights from London Gatwick Airport to Ontario from £368

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 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
9 Jul — 16 Jul1
1 adult
1 adult, Economy, 0 bags

Cheap 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 9 June 2026.

Mon 7/910:25
LGW
-
ONT
2 stops19h 27m
Air France
Wed 7/1012:00
ONT
-
LGW
2 stops20h 00m
Air France
Deal found 9/6£510
Tue 8/911:30
LGW
-
ONT
2 stops19h 29m
Iberia
Tue 29/914:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 9/6£606
Thu 20/812:20
LGW
-
ONT
2 stops31h 23m
American Airlines
Fri 28/806:15
ONT
-
LGW
2 stops18h 25m
American Airlines
Deal found 6/6£654
Wed 15/711:30
LGW
-
ONT
2 stops20h 29m
Iberia
Tue 21/714:15
ONT
-
LGW
2 stops21h 45m
Iberia
Deal found 7/6£664
Thu 11/609:40
LGW
-
ONT
2 stops21h 25m
Multiple Airlines
Wed 17/600:55
ONT
-
LGW
2 stops22h 35m
Multiple Airlines
Deal found 8/6£720
Tue 16/611:30
LGW
-
ONT
2 stops20h 29m
British Airways
Wed 8/723:59
ONT
-
LGW
2 stops36h 01m
British Airways
Deal found 9/6£730
Wed 17/620:40
LGW
-
ONT
2 stops31h 16m
British Airways
Mon 6/705:34
ONT
-
LGW
2 stops30h 26m
British Airways
Deal found 9/6£738
Sat 5/1219:40
LGW
-
ONT
2 stops24h 13m
Iberia
Sat 26/1206:10
ONT
-
LGW
2 stops20h 40m
Iberia
Deal found 6/6£739
Tue 8/913:00
LGW
-
ONT
2 stops17h 00m
Multiple Airlines
Tue 29/910:55
ONT
-
LGW
2 stops19h 45m
Multiple Airlines
Deal found 8/6£767
Fri 4/915:40
LGW
-
ONT
2 stops32h 45m
Multiple Airlines
Fri 25/915:14
ONT
-
LGW
2 stops15h 26m
Multiple Airlines
Deal found 5/6£791
Tue 23/609:15
LGW
-
ONT
2 stops21h 50m
Multiple Airlines
Mon 6/700:55
ONT
-
LGW
2 stops22h 10m
Multiple Airlines
Deal found 6/6£794
Tue 9/609:15
LGW
-
ONT
2 stops21h 50m
Multiple Airlines
Mon 15/600:55
ONT
-
LGW
2 stops22h 10m
Multiple Airlines
Deal found 4/6£800

Find 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 9 June 2026.

Round-trip from

£606

One-way from

£368

Popular in

December

Cheapest in

September

Average price

£502
Iberia
  • Iberia
  • 8/9-29/9
  • 4 total stops
  • 41h 07m total
  • London to Ontario
Search Deals
Iberia
  • Iberia
  • 8/10
  • 2 total stops
  • 19h 36m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£15 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

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 9 June 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 15/7

11:30-23:59

2 stops20h 29m

Ontario

Tue 21/7

14:15-20:00

2 stops21h 45m

£664

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 30/6

20:40-19:56

2 stops31h 16m

Ontario

Mon 3/8

05:34-20:00

2 stops30h 26m

£738

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 27/6

10:25-22:41

2 stops20h 16m

Ontario

Tue 30/6

12:02-16:00

2 stops19h 58m

£929

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 31/10

11:55-23:42

2 stops18h 47m

Ontario

Sat 7/11

06:00-10:55

2 stops20h 55m

£986

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 24/8

15:40-17:10

2 stops33h 30m

Ontario

Thu 3/9

15:07-14:40

2 stops15h 33m

£1,046
Fastest return journey

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 9/7

13:00-23:11

2 stops18h 11m

Ontario

Thu 16/7

14:05-14:40

2 stops16h 35m

£1,158

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 27/6

07:10-11:11

2 stops36h 01m

Ontario

Wed 5/8

23:51-22:25

2 stops38h 34m

£1,170

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 5/7

07:30-23:11

2 stops23h 41m

Ontario

Sun 12/7

23:58-22:25

2 stops38h 27m

£1,173

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 3/7

10:50-22:01

2 stops43h 11m

Ontario

Fri 10/7

23:51-22:25

2 stops38h 34m

£1,237

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 3/7

17:35-22:01

2 stops36h 26m

Ontario

Fri 24/7

14:05-22:25

2 stops24h 20m

£1,237

Flights are sorted by cheapest return flights first.

Deals found on 4/6

Showing 1-10 of 23 resultsSorted by cheapest first
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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.

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 20h 16m. 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.

See more FAQs

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Alternative routes for Gatwick to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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.

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