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Cheap flights from London Gatwick Airport to Ontario from £310

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 7/6. Fares are subject to change and may not be available on all flights or dates of travel.
LGW — ONT
30 Mar — 6 Apr1
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 28 February 2026.

Wed 4/1111:35
LGW
-
ONT
2 stops32h 18m
Iberia
Mon 16/1110:47
ONT
-
LGW
2 stops24h 13m
Iberia
Deal found 25/2£441
Mon 27/410:25
LGW
-
ONT
2 stops18h 35m
Delta
Sat 9/513:35
ONT
-
LGW
2 stops18h 25m
Delta
Deal found 25/2£535
Fri 10/410:25
LGW
-
ONT
2 stops18h 35m
Air France
Fri 17/406:00
ONT
-
LGW
2 stops43h 20m
Air France
Deal found 24/2£570
Mon 27/415:40
LGW
-
ONT
2 stops38h 52m
Multiple Airlines
Tue 19/512:04
ONT
-
LGW
2 stops18h 36m
Multiple Airlines
Deal found 25/2£764
Wed 11/311:55
LGW
-
ONT
2 stops18h 57m
Multiple Airlines
Thu 26/306:00
ONT
-
LGW
2 stops21h 55m
Multiple Airlines
Deal found 27/2£770
Tue 12/513:00
LGW
-
ONT
2 stops17h 32m
Multiple Airlines
Tue 30/614:09
ONT
-
LGW
2 stops16h 31m
Multiple Airlines
Deal found 24/2£783
Tue 14/415:40
LGW
-
ONT
2 stops40h 19m
Multiple Airlines
Tue 21/410:59
ONT
-
LGW
2 stops19h 41m
Multiple Airlines
Deal found 28/2£788
Wed 27/511:30
LGW
-
ONT
2 stops20h 29m
Iberia
Wed 17/614:18
ONT
-
LGW
2 stops21h 42m
Iberia
Deal found 25/2£793
Fri 27/211:45
LGW
-
ONT
2 stops34h 04m
Iberia
Tue 3/306:00
ONT
-
LGW
2 stops20h 50m
Iberia
Deal found 27/2£823
Wed 8/715:40
LGW
-
ONT
2 stops27h 34m
Multiple Airlines
Wed 15/714:09
ONT
-
LGW
2 stops16h 31m
Multiple Airlines
Deal found 27/2£833

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 28 February 2026.

Round-trip from

£535

One-way from

£310

Popular in

December

Cheapest in

September

Average price

£399
Delta
  • Delta
  • 27/4-9/5
  • 4 total stops
  • 37h 00m total
  • London to Ontario
Search Deals
7/6
  • 7/6
  • 2 total stops
  • 31h 07m total
  • London to Ontario
Search Deals
Highest demand for flights based on searches. 6% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£7 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 28 February 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

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 27/4

10:25-21:00

2 stops18h 35m

Ontario

Sat 9/5

13:35-16:00

2 stops18h 25m

£535

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Fri 10/4

10:25-21:00

2 stops18h 35m

Ontario

Fri 17/4

06:00-09:20

2 stops43h 20m

£570

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Tue 14/4

15:40-23:59

2 stops40h 19m

Ontario

Tue 21/4

10:59-14:40

2 stops19h 41m

£788

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 9/7

13:00-23:11

2 stops18h 11m

Ontario

Thu 16/7

14:09-14:40

2 stops16h 31m

£997

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 20/4

15:40-23:59

2 stops40h 19m

Ontario

Mon 27/4

10:39-11:45

2 stops17h 06m

£1,010

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 13/4

10:20-23:59

2 stops21h 39m

Ontario

Mon 20/4

06:00-18:50

2 stops28h 50m

£1,016

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 16/3

11:55-22:45

2 stops17h 50m

Ontario

Tue 31/3

10:33-14:40

2 stops20h 07m

£1,025

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Sat 11/4

10:25-22:34

2 stops20h 09m

Ontario

Sat 18/4

12:49-16:00

2 stops19h 11m

£1,239

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Thu 4/6

07:00-23:58

2 stops24h 58m

Ontario

Mon 8/6

22:00-09:55

2 stops51h 55m

£1,275

LondonOntario

LGW - ONT

LGWONT

London Gatwick

Mon 30/3

17:35-23:59

2 stops38h 24m

Ontario

Sat 25/4

10:39-22:25

2 stops27h 46m

£1,302

Flights are sorted by cheapest return flights first.

Deals found on 25/2

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.

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 £237). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £449). 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 18h 35m. 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.

  • 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 £237). Flying from London Gatwick Airport to Ontario in December is currently the most expensive (average of £449). 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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