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Cheap flights from London Gatwick Airport to Ontario from £319

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
29 Aug — 5 Sep1
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 30 July 2026.

Fri 4/910:25
LGW
-
ONT
2 stops19h 27m
Delta
Fri 25/906:20
ONT
-
LGW
2 stops19h 05m
Delta
Deal found 28/7£514
Fri 30/1016:45
LGW
-
ONT
2 stops36h 58m
Air France
Wed 18/1107:00
ONT
-
LGW
2 stops24h 45m
Air France
Deal found 27/7£516
Wed 28/1016:45
LGW
-
ONT
2 stops36h 58m
Air France
Wed 18/1107:00
ONT
-
LGW
2 stops24h 45m
Air France
Deal found 29/7£528
Thu 24/1216:45
LGW
-
ONT
2 stops31h 28m
Multiple Airlines
Thu 31/1207:00
ONT
-
LGW
2 stops24h 45m
Multiple Airlines
Deal found 29/7£539
Mon 17/810:25
LGW
-
ONT
2 stops37h 59m
Multiple Airlines
Mon 24/818:01
ONT
-
LGW
2 stops37h 59m
Multiple Airlines
Deal found 27/7£545
Tue 25/811:30
LGW
-
ONT
2 stops19h 29m
Iberia
Tue 15/914:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 28/7£545
Mon 24/810:25
LGW
-
ONT
2 stops20h 20m
Delta
Sun 6/906:17
ONT
-
LGW
2 stops19h 08m
Delta
Deal found 27/7£559
Wed 26/811:30
LGW
-
ONT
2 stops19h 29m
Iberia
Wed 16/914:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 29/7£567
Mon 17/820:40
LGW
-
ONT
2 stops34h 19m
Iberia
Fri 28/814:27
ONT
-
LGW
2 stops21h 33m
Iberia
Deal found 28/7£596
Wed 19/811:30
LGW
-
ONT
2 stops43h 29m
Iberia
Fri 28/807:05
ONT
-
LGW
2 stops28h 55m
Iberia
Deal found 28/7£644
Wed 19/811:30
LGW
-
ONT
2 stops19h 29m
Iberia
Thu 27/814:27
ONT
-
LGW
2 stops45h 33m
Iberia
Deal found 28/7£683
Mon 24/810:25
LGW
-
ONT
2 stops20h 20m
Delta
Tue 1/907:05
ONT
-
LGW
2 stops18h 20m
Delta
Deal found 29/7£705

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 30 July 2026.

Round-trip from

£514

One-way from

£319

Popular in

December

Cheapest in

February

Average price

£537
Delta
  • Delta
  • 4/9-25/9
  • 4 total stops
  • 38h 32m total
  • London to Ontario
Search Deals
18/9
  • 18/9
  • 2 total stops
  • 28h 30m 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 (£5 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 30 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

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 24/8

10:25-22:45

2 stops20h 20m

Ontario

Sun 6/9

06:17-09:25

2 stops19h 08m

£559

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 9/11

11:55-22:40

2 stops18h 45m

Ontario

Tue 17/11

10:05-10:55

2 stops16h 50m

£723

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 4/9

15:40-16:30

2 stops32h 50m

Ontario

Fri 11/9

12:25-14:40

2 stops18h 15m

£771

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 25/1

11:55-22:39

2 stops18h 44m

Ontario

Mon 5/7

14:05-14:40

2 stops16h 35m

£848
Fastest return journey

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 1/9

13:00-22:00

2 stops17h 00m

Ontario

Thu 10/9

15:14-14:40

2 stops15h 26m

£858

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 3/9

13:00-22:15

2 stops17h 15m

Ontario

Wed 16/9

15:14-14:40

2 stops15h 26m

£864

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 27/8

13:00-23:24

2 stops18h 24m

Ontario

Wed 9/9

10:55-11:45

2 stops16h 50m

£893

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 18/11

11:55-21:35

2 stops17h 40m

Ontario

Tue 24/11

10:47-10:55

2 stops16h 08m

£1,021
Cheapest one-way

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 17/9

11:30-20:07

2 stops40h 37m

£363

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 14/9

11:30-09:29

2 stops53h 59m

£420

Flights are sorted by cheapest return flights first.

Deals found on 26/7

Showing 1-10 of 19 resultsSorted by cheapest first
1
2

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 20m. 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

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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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