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Cheap flights from London Gatwick Airport to Ontario from £321

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
4 Mar — 11 Mar1
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 2 February 2026.

Mon 27/410:25
LGW
-
ONT
2 stops20h 12m
Delta
Sat 9/513:35
ONT
-
LGW
2 stops18h 25m
Delta
Deal found 1/2£394
Sun 8/211:45
LGW
-
ONT
2 stops43h 03m
British Airways
Tue 3/310:56
ONT
-
LGW
2 stops24h 04m
British Airways
Deal found 1/2£416
Tue 17/311:20
LGW
-
ONT
2 stops29h 46m
Multiple Airlines
Tue 24/306:00
ONT
-
LGW
2 stops21h 50m
Multiple Airlines
Deal found 30/1£424
Mon 4/511:30
LGW
-
ONT
2 stops20h 16m
Iberia
Mon 25/514:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 2/2£697
Thu 21/511:30
LGW
-
ONT
2 stops20h 29m
Iberia
Fri 29/512:46
ONT
-
LGW
2 stops23h 14m
Iberia
Deal found 31/1£717
Thu 4/611:30
LGW
-
ONT
2 stops20h 29m
Iberia
Tue 9/614:22
ONT
-
LGW
2 stops21h 38m
Iberia
Deal found 1/2£803
Mon 16/311:55
LGW
-
ONT
2 stops18h 57m
Multiple Airlines
Mon 23/310:59
ONT
-
LGW
2 stops16h 56m
Multiple Airlines
Deal found 31/1£843
Fri 14/810:20
LGW
-
ONT
2 stops21h 36m
Multiple Airlines
Sun 23/812:00
ONT
-
LGW
2 stops18h 40m
Multiple Airlines
Deal found 1/2£949
Mon 2/311:55
LGW
-
ONT
2 stops18h 25m
Multiple Airlines
Mon 23/310:59
ONT
-
LGW
2 stops16h 56m
Multiple Airlines
Deal found 2/2£1,003
Mon 9/206:20
LGW
-
ONT
2 stops40h 48m
Multiple Airlines
Thu 5/312:02
ONT
-
LGW
2 stops26h 33m
Multiple Airlines
Deal found 1/2£1,063

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 2 February 2026.

Round-trip from

£394

One-way from

£321

Popular in

December

Cheapest in

September

Average price

£396
Delta
  • Delta
  • 27/4-9/5
  • 4 total stops
  • 38h 37m total
  • London to Ontario
Search Deals
British Airways
  • British Airways
  • 15/4
  • 2 total stops
  • 20h 16m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 2 February 2026.
Use the filters below to find and compare flights from London Gatwick Airport to Ontario that are best for you.

Fly from

Gatwick

Fly to

Ontario

Route

Depart

Return

Price

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 27/4

10:25-22:37

2 stops20h 12m

Ontario

Sat 9/5

13:35-16:00

2 stops18h 25m

£394

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 17/3

11:20-10:06

2 stops29h 46m

Ontario

Tue 24/3

06:00-10:50

2 stops21h 50m

£424

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 4/6

11:30-23:59

2 stops20h 29m

Ontario

Tue 9/6

14:22-20:00

2 stops21h 38m

£803

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 16/3

11:55-23:52

2 stops18h 57m

Ontario

Mon 23/3

10:59-10:55

2 stops16h 56m

£843

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 2/3

11:55-22:20

2 stops18h 25m

Ontario

Mon 23/3

10:59-10:55

2 stops16h 56m

£1,003

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 13/3

05:55-11:08

2 stops36h 13m

Ontario

Sun 22/3

10:33-22:35

2 stops29h 02m

£1,086

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 27/2

17:05-23:32

2 stops38h 27m

Ontario

Sun 15/3

12:02-22:35

2 stops27h 33m

£1,086

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Wed 18/3

06:25-23:59

2 stops24h 34m

Ontario

Wed 25/3

10:33-22:35

2 stops29h 02m

£1,125

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 14/4

07:00-23:59

2 stops24h 59m

Ontario

Fri 17/4

10:33-22:25

2 stops27h 52m

£1,154

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 28/4

07:00-14:32

2 stops39h 32m

Ontario

Tue 12/5

06:00-22:25

2 stops32h 25m

£1,167

Flights are sorted by cheapest return flights first.

Deals found on 1/2

Showing 1-10 of 22 results
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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.

Cheapflights Insights

Everything you need to know about your flight from London Gatwick Airport to Ontario

What is the cheapest month to book a flight from London Gatwick Airport to Ontario?

Currently, September is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of £234). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £442). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 12m. 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.

  • What is the cheapest month to book a flight from London Gatwick Airport to Ontario?

    Currently, September is the cheapest month in which you can book a flight from London Gatwick Airport to Ontario (average of £234). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £442). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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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