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Cheap flights from London Gatwick Airport to Ontario from £305

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 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
19 May — 26 May1
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 19 April 2026.

Tue 21/411:30
LGW
-
ONT
2 stops30h 39m
British Airways
Tue 28/410:59
ONT
-
LGW
2 stops25h 01m
British Airways
Deal found 18/4£541
Fri 29/510:25
LGW
-
ONT
2 stops19h 23m
Delta
Fri 5/613:35
ONT
-
LGW
2 stops18h 25m
Delta
Deal found 14/4£543
Thu 23/411:30
LGW
-
ONT
2 stops20h 16m
British Airways
Tue 28/410:59
ONT
-
LGW
2 stops25h 01m
British Airways
Deal found 18/4£571
Thu 21/510:25
LGW
-
ONT
2 stops20h 09m
Delta
Sat 6/613:35
ONT
-
LGW
2 stops18h 25m
Delta
Deal found 14/4£587
Tue 22/911:30
LGW
-
ONT
2 stops19h 36m
Iberia
Thu 8/1014:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 16/4£592
Mon 20/411:30
LGW
-
ONT
2 stops39h 07m
British Airways
Mon 27/410:59
ONT
-
LGW
2 stops25h 01m
British Airways
Deal found 18/4£602
Sun 19/420:40
LGW
-
ONT
2 stops56h 14m
British Airways
Mon 27/410:59
ONT
-
LGW
2 stops25h 01m
British Airways
Deal found 18/4£610
Mon 1/610:25
LGW
-
ONT
2 stops20h 07m
Delta
Mon 8/613:48
ONT
-
LGW
2 stops18h 12m
Delta
Deal found 17/4£637
Thu 19/1119:40
LGW
-
ONT
2 stops34h 43m
Iberia
Sun 22/1107:00
ONT
-
LGW
2 stops19h 50m
Iberia
Deal found 16/4£660
Tue 23/610:35
LGW
-
ONT
2 stops20h 06m
Delta
Sat 4/713:48
ONT
-
LGW
2 stops18h 12m
Delta
Deal found 18/4£671
Tue 21/411:30
LGW
-
ONT
2 stops30h 39m
British Airways
Wed 29/407:30
ONT
-
LGW
2 stops28h 30m
British Airways
Deal found 18/4£714
Thu 23/411:30
LGW
-
ONT
2 stops20h 16m
British Airways
Wed 29/410:59
ONT
-
LGW
2 stops25h 01m
British Airways
Deal found 18/4£744

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 19 April 2026.

Round-trip from

£543

One-way from

£305

Popular in

December

Cheapest in

September

Average price

£469
Delta
  • Delta
  • 29/5-5/6
  • 4 total stops
  • 37h 48m total
  • London to Ontario
Search Deals
1/6
  • 1/6
  • 2 total stops
  • 33h 44m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 19 April 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

Fri 29/5

10:25-21:48

2 stops19h 23m

Ontario

Fri 5/6

13:35-16:00

2 stops18h 25m

£543

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 21/5

10:25-22:34

2 stops20h 09m

Ontario

Sat 6/6

13:35-16:00

2 stops18h 25m

£587

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 1/6

10:25-22:32

2 stops20h 07m

Ontario

Mon 8/6

13:48-16:00

2 stops18h 12m

£637

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 23/6

10:35-22:41

2 stops20h 06m

Ontario

Sat 4/7

13:48-16:00

2 stops18h 12m

£671

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 26/5

10:35-22:34

2 stops19h 59m

Ontario

Sat 30/5

13:35-16:00

2 stops18h 25m

£762

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 1/10

15:40-22:35

2 stops38h 55m

Ontario

Wed 7/10

12:00-14:40

2 stops18h 40m

£824
Fastest return journey

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 12/5

13:00-22:32

2 stops17h 32m

Ontario

Tue 2/6

12:04-14:40

2 stops18h 36m

£861

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 14/10

15:40-22:39

2 stops38h 59m

Ontario

Wed 4/11

06:00-10:55

2 stops20h 55m

£869

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 14/5

15:40-21:55

2 stops62h 15m

Ontario

Thu 21/5

16:03-14:40

2 stops38h 37m

£912

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 6/6

17:40-20:47

2 stops59h 07m

Ontario

Sat 13/6

23:16-16:35

2 stops33h 19m

£1,061

Flights are sorted by cheapest return flights first.

Deals found on 13/4

Showing 1-10 of 22 resultsSorted by cheapest first
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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.

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 19h 23m. Airlines will cover a distance of 5430 mi.

  • 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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