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Cheap flights from London Gatwick Airport to Ontario from £354

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
19 Jul — 26 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 19 June 2026.

Thu 27/810:25
LGW
-
ONT
2 stops20h 20m
Delta
Wed 9/911:54
ONT
-
LGW
2 stops20h 06m
Delta
Deal found 18/6£567
Thu 25/610:25
LGW
-
ONT
2 stops20h 16m
Delta
Sat 11/706:20
ONT
-
LGW
2 stops19h 00m
Delta
Deal found 18/6£585
Sat 27/610:25
LGW
-
ONT
2 stops20h 16m
Delta
Sat 11/706:20
ONT
-
LGW
2 stops19h 00m
Delta
Deal found 18/6£603
Sat 4/710:25
LGW
-
ONT
2 stops20h 16m
Delta
Tue 28/707:05
ONT
-
LGW
2 stops18h 20m
Delta
Deal found 17/6£630
Thu 18/610:25
LGW
-
ONT
2 stops20h 16m
Delta
Mon 6/706:20
ONT
-
LGW
2 stops19h 20m
Delta
Deal found 18/6£681
Thu 17/911:30
LGW
-
ONT
2 stops20h 06m
Iberia
Thu 8/1014:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 18/6£682
Thu 27/811:30
LGW
-
ONT
2 stops19h 29m
Iberia
Sun 4/1014:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 14/6£684
Tue 23/609:15
LGW
-
ONT
2 stops21h 50m
Multiple Airlines
Mon 6/700:55
ONT
-
LGW
2 stops22h 10m
Multiple Airlines
Deal found 15/6£724
Tue 28/710:35
LGW
-
ONT
2 stops20h 17m
Delta
Tue 4/807:05
ONT
-
LGW
2 stops18h 20m
Delta
Deal found 13/6£772
Wed 8/710:25
LGW
-
ONT
2 stops20h 27m
Delta
Wed 22/707:05
ONT
-
LGW
2 stops18h 20m
Delta
Deal found 18/6£791
Tue 15/915:40
LGW
-
ONT
2 stops38h 20m
Multiple Airlines
Tue 6/1014:14
ONT
-
LGW
2 stops16h 26m
Multiple Airlines
Deal found 16/6£794
Wed 16/915:40
LGW
-
ONT
2 stops38h 30m
Multiple Airlines
Wed 7/1014:13
ONT
-
LGW
2 stops16h 27m
Multiple Airlines
Deal found 17/6£801

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 June 2026.

Round-trip from

£567

One-way from

£354

Popular in

December

Cheapest in

September

Average price

£548
Delta
  • Delta
  • 27/8-9/9
  • 4 total stops
  • 40h 26m total
  • London to Ontario
Search Deals
18/9
  • 18/9
  • 3 total stops
  • 41h 55m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£11 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 19 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

Thu 27/8

10:25-22:45

2 stops20h 20m

Ontario

Wed 9/9

11:54-16:00

2 stops20h 06m

£567

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 4/7

10:25-22:41

2 stops20h 16m

Ontario

Tue 28/7

07:05-09:25

2 stops18h 20m

£630

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 17/9

11:30-23:36

2 stops20h 06m

Ontario

Thu 8/10

14:22-20:00

2 stops21h 38m

£682

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 28/7

10:35-22:52

2 stops20h 17m

Ontario

Tue 4/8

07:05-09:25

2 stops18h 20m

£772

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 8/7

10:25-22:52

2 stops20h 27m

Ontario

Wed 22/7

07:05-09:25

2 stops18h 20m

£791

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 16/9

15:40-22:10

2 stops38h 30m

Ontario

Wed 7/10

14:13-14:40

2 stops16h 27m

£801
Fastest return journey

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sun 12/7

10:20-21:25

2 stops19h 05m

Ontario

Sun 19/7

16:35-18:50

2 stops18h 15m

£856

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 14/7

15:40-13:09

2 stops29h 29m

Ontario

Tue 21/7

17:26-11:45

2 stops34h 19m

£927

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 14/9

17:35-20:13

2 stops58h 38m

Ontario

Mon 5/10

21:10-16:35

2 stops35h 25m

£1,013

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 14/9

17:35-20:13

2 stops58h 38m

Ontario

Mon 19/10

23:05-16:35

2 stops33h 30m

£1,035

Flights are sorted by cheapest return flights first.

Deals found on 18/6

Showing 1-10 of 22 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 06m. 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

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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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