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Cheap flights from Ontario to London Gatwick Airport from £303

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 19/7. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGW
24 Mar — 31 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ontario to Gatwick

Enter your travel dates to find the best prices.

Cheapest flights from Ontario to Gatwick
Explore the most affordable flight options available from Ontario to Gatwick. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2026.

Tue 14/414:20
ONT
-
LGW
2 stops17h 40m
Delta
Wed 29/410:25
LGW
-
ONT
2 stops20h 12m
Delta
Deal found 21/2£510
Mon 17/814:00
ONT
-
LGW
2 stops17h 45m
Delta
Wed 2/910:25
LGW
-
ONT
2 stops20h 15m
Delta
Deal found 17/2£511
Tue 18/814:00
ONT
-
LGW
2 stops18h 00m
Delta
Wed 2/910:25
LGW
-
ONT
2 stops19h 31m
Delta
Deal found 17/2£548
Mon 6/406:00
ONT
-
LGW
2 stops26h 00m
Air France
Mon 13/410:25
LGW
-
ONT
2 stops42h 35m
Air France
Deal found 20/2£590
Thu 23/414:20
ONT
-
LGW
2 stops17h 40m
Delta
Mon 4/510:25
LGW
-
ONT
2 stops20h 12m
Delta
Deal found 20/2£611
Sat 18/414:20
ONT
-
LGW
2 stops17h 40m
Delta
Thu 30/410:25
LGW
-
ONT
2 stops18h 35m
Delta
Deal found 17/2£638
Tue 21/407:00
ONT
-
LGW
2 stops23h 40m
Multiple Airlines
Thu 30/413:00
LGW
-
ONT
2 stops18h 59m
Multiple Airlines
Deal found 20/2£690
Wed 15/406:00
ONT
-
LGW
2 stops24h 40m
Multiple Airlines
Tue 5/513:00
LGW
-
ONT
2 stops17h 32m
Multiple Airlines
Deal found 19/2£718
Sat 2/507:00
ONT
-
LGW
2 stops18h 20m
Delta
Sun 10/510:25
LGW
-
ONT
2 stops19h 23m
Delta
Deal found 21/2£748

Find flight deals from Ontario to Gatwick

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Gatwick (LGW). 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 22 February 2026.

Round-trip from

£510

One-way from

£303

Popular in

December

Cheapest in

September

Average price

£487
Delta
  • Delta
  • 14/4-29/4
  • 4 total stops
  • 37h 52m total
  • Ontario to London
Search Deals
Delta
  • Delta
  • 19/7
  • 2 total stops
  • 24h 50m total
  • Ontario to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£62 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£16 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 Ontario to Gatwick 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 22 February 2026.
Use the filters below to find and compare flights from Ontario to London Gatwick Airport that are best for you.

Fly from

Ontario

Fly to

Gatwick

Route

Depart

Return

Price

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 17/8

14:00-15:45

2 stops17h 45m

London Gatwick

Wed 2/9

10:25-22:40

2 stops20h 15m

£511

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 18/8

14:00-16:00

2 stops18h 00m

London Gatwick

Wed 2/9

10:25-21:56

2 stops19h 31m

£548

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 23/4

14:20-16:00

2 stops17h 40m

London Gatwick

Mon 4/5

10:25-22:37

2 stops20h 12m

£612

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 18/4

14:20-16:00

2 stops17h 40m

London Gatwick

Thu 30/4

10:25-21:00

2 stops18h 35m

£638

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 15/4

06:00-14:40

2 stops24h 40m

London Gatwick

Tue 5/5

13:00-22:32

2 stops17h 32m

£718

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 7/3

12:02-22:35

2 stops26h 33m

London Gatwick

Mon 9/3

06:20-11:08

2 stops35h 48m

£777

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Fri 1/5

10:39-22:25

2 stops27h 46m

London Gatwick

Mon 11/5

07:00-09:45

2 stops34h 45m

£790

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 29/4

10:39-22:25

2 stops27h 46m

London Gatwick

Mon 4/5

07:00-23:59

2 stops24h 59m

£791

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 21/7

07:00-16:00

2 stops25h 00m

£303

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 22/7

07:00-16:00

2 stops25h 00m

£303

Flights are sorted by cheapest return flights first.

Deals found on 17/2

Showing 1-10 of 20 results
1
2

Best time to book a flight from Ontario to Gatwick

Have a flexible travel schedule? Discover the best time to fly to Gatwick from Ontario 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 Ontario to London Gatwick Airport

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

Currently, October is the cheapest month in which you can book a flight from Ontario to London Gatwick Airport (average of £165). Flying from Ontario to London Gatwick Airport in February is currently the most expensive (average of £527). 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 Ontario to Gatwick. 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 from for flights from Ontario to London Gatwick?

    Most people fly from Ontario (ONT) if they book a flight from Ontario to London Gatwick. On average, Ontario has 0 outbound flights to London Gatwick per day from 0 airlines. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Ontario to London Gatwick Airport?

    Delta can get you from Ontario to London Gatwick Airport in just under 17h 45m. Your travel time can differ by up to . There are 5430 mi between Ontario and London Gatwick Airport.

  • Can I find deals for flights from Ontario to Gatwick that include hotel bookings?

    Yes. In addition to deals on Ontario to Gatwick flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Gatwick?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Gatwick.

  • Can I find deals for business class flights from Ontario to Gatwick?

    Yes. Cheapflights offers flight deals from Ontario to Gatwick 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 Ontario to London Gatwick Airport?

    Currently, October is the cheapest month in which you can book a flight from Ontario to London Gatwick Airport (average of £165). Flying from Ontario to London Gatwick Airport in February is currently the most expensive (average of £527). 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

Travelling to a place near London Gatwick Airport?

Book flights to London Gatwick Airport if you plan to visit one of these locations
Milton Keynes
Luton
Croydon
Wembley
Gatwick
Slough
Hounslow
Ilford
Hayes
Brentford
Colchester
Watford
Guildford
Kingston upon Thames
Eastbourne
Ipswich
Chelmsford
Bedford
Crawley
Romford

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How does Cheapflights help users find flights from Ontario to Gatwick?

Cheapflights makes it easy to find Ontario to Gatwick 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 Ontario to Gatwick?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ontario to Gatwick.

Can Cheapflights find flights from Ontario to Gatwick with no change fees?

Certainly. Search results for flights to Gatwick from Ontario shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Ontario to Gatwick become cheaper?

Yes, Cheapflights offers price alerts on Ontario to Gatwick 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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