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Cheap flights from London Gatwick Airport to Ontario from £351

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 27/10. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
31 Jul — 7 Aug1
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 1 July 2026.

Fri 23/1010:25
LGW
-
ONT
2 stops20h 18m
Delta
Sat 31/1013:17
ONT
-
LGW
2 stops19h 28m
Delta
Deal found 29/6£534
Mon 6/710:25
LGW
-
ONT
2 stops19h 23m
Delta
Tue 25/806:20
ONT
-
LGW
2 stops19h 05m
Delta
Deal found 29/6£596
Sat 4/710:25
LGW
-
ONT
2 stops20h 16m
Delta
Sat 11/706:20
ONT
-
LGW
2 stops19h 00m
Delta
Deal found 29/6£597
Fri 20/1110:00
LGW
-
ONT
2 stops20h 43m
Virgin Atlantic
Thu 3/1207:00
ONT
-
LGW
2 stops24h 45m
Virgin Atlantic
Deal found 27/6£619
Fri 3/710:25
LGW
-
ONT
2 stops20h 16m
Delta
Tue 14/711:59
ONT
-
LGW
2 stops20h 01m
Delta
Deal found 29/6£620
Mon 6/710:25
LGW
-
ONT
2 stops19h 23m
Delta
Sun 23/809:43
ONT
-
LGW
2 stops22h 17m
Delta
Deal found 29/6£624
Sun 5/710:25
LGW
-
ONT
2 stops19h 23m
Delta
Sun 23/809:43
ONT
-
LGW
2 stops22h 17m
Delta
Deal found 29/6£665
Fri 7/811:30
LGW
-
ONT
2 stops19h 29m
British Airways
Mon 24/807:05
ONT
-
LGW
2 stops28h 55m
British Airways
Deal found 27/6£701
Thu 6/820:40
LGW
-
ONT
2 stops34h 19m
British Airways
Mon 24/806:00
ONT
-
LGW
2 stops30h 00m
British Airways
Deal found 27/6£710
Tue 14/711:30
LGW
-
ONT
2 stops40h 29m
Iberia
Fri 28/812:33
ONT
-
LGW
2 stops47h 27m
Iberia
Deal found 30/6£740
Tue 1/913:00
LGW
-
ONT
2 stops17h 00m
Multiple Airlines
Tue 29/915:14
ONT
-
LGW
2 stops15h 26m
Multiple Airlines
Deal found 29/6£757
Wed 30/915:40
LGW
-
ONT
2 stops38h 35m
Multiple Airlines
Wed 21/1014:13
ONT
-
LGW
2 stops16h 27m
Multiple Airlines
Deal found 1/7£788

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 1 July 2026.

Round-trip from

£534

One-way from

£351

Popular in

December

Cheapest in

September

Average price

£553
Delta
  • Delta
  • 23/10-31/10
  • 4 total stops
  • 39h 46m total
  • London to Ontario
Search Deals
American Airlines
  • American Airlines
  • 27/10
  • 2 total stops
  • 33h 12m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£10 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 July 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 1 July 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
Fastest return journey

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 1/9

13:00-22:00

2 stops17h 00m

Ontario

Tue 29/9

15:14-14:40

2 stops15h 26m

£757

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 30/9

15:40-22:15

2 stops38h 35m

Ontario

Wed 21/10

14:13-14:40

2 stops16h 27m

£788

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 1/9

13:00-22:00

2 stops17h 00m

Ontario

Tue 8/9

15:14-14:40

2 stops15h 26m

£801

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 1/9

13:00-22:00

2 stops17h 00m

Ontario

Sun 6/9

15:07-14:40

2 stops15h 33m

£871

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 1/11

11:55-22:40

2 stops18h 45m

Ontario

Sat 14/11

11:20-10:55

2 stops15h 35m

£880

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 28/9

17:35-20:13

2 stops34h 38m

Ontario

Mon 19/10

23:05-16:35

2 stops33h 30m

£986

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 29/7

11:30-23:59

2 stops20h 29m

Ontario

Wed 19/8

12:33-20:00

2 stops23h 27m

£1,132

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 26/8

10:25-22:45

2 stops20h 20m

Ontario

Mon 31/8

11:56-16:00

2 stops20h 04m

£1,148

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 24/12

11:55-22:39

2 stops18h 44m

Ontario

Thu 31/12

10:05-10:55

2 stops16h 50m

£1,160

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 17/10

07:10-23:45

2 stops24h 35m

Ontario

Tue 20/10

14:13-22:25

2 stops24h 12m

£1,207

Flights are sorted by cheapest return flights first.

Deals found on 27/6

Showing 1-10 of 24 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.

  • 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

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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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