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Cheap flights from Ontario to London Gatwick Airport from £249

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 26/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGW
7 Jul — 14 Jul1
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 7 June 2026.

Wed 23/907:05
ONT
-
LGW
2 stops18h 20m
Delta
Mon 28/910:25
LGW
-
ONT
2 stops20h 15m
Delta
Deal found 3/6£680
Mon 21/912:25
ONT
-
LGW
2 stops18h 15m
Multiple Airlines
Tue 29/915:40
LGW
-
ONT
2 stops38h 20m
Multiple Airlines
Deal found 6/6£754
Tue 1/913:50
ONT
-
LGW
2 stops16h 50m
Multiple Airlines
Wed 16/915:40
LGW
-
ONT
2 stops38h 30m
Multiple Airlines
Deal found 4/6£755
Mon 8/621:36
ONT
-
LGW
2 stops25h 29m
Multiple Airlines
Thu 11/609:40
LGW
-
ONT
2 stops21h 25m
Multiple Airlines
Deal found 3/6£793
Thu 30/714:30
ONT
-
LGW
2 stops16h 10m
Multiple Airlines
Thu 20/813:00
LGW
-
ONT
2 stops17h 10m
Multiple Airlines
Deal found 7/6£804
Wed 22/707:05
ONT
-
LGW
2 stops18h 20m
Delta
Wed 29/710:25
LGW
-
ONT
2 stops20h 27m
Delta
Deal found 5/6£814
Mon 8/600:55
ONT
-
LGW
2 stops22h 10m
Multiple Airlines
Thu 18/609:40
LGW
-
ONT
2 stops21h 25m
Multiple Airlines
Deal found 3/6£815
Thu 11/621:36
ONT
-
LGW
2 stops26h 14m
Multiple Airlines
Thu 18/609:40
LGW
-
ONT
2 stops21h 25m
Multiple Airlines
Deal found 3/6£818
Mon 31/814:00
ONT
-
LGW
2 stops16h 40m
Multiple Airlines
Wed 16/915:40
LGW
-
ONT
2 stops38h 30m
Multiple Airlines
Deal found 4/6£837
Sat 1/807:00
ONT
-
LGW
2 stops19h 40m
American Airlines
Sun 9/814:30
LGW
-
ONT
2 stops29h 13m
American Airlines
Deal found 6/6£847

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 7 June 2026.

Round-trip from

£680

One-way from

£249

Popular in

December

Cheapest in

September

Average price

£671
Delta
  • Delta
  • 23/9-28/9
  • 4 total stops
  • 38h 35m total
  • Ontario to London
Search Deals
26/8
  • 26/8
  • 2 total stops
  • 19h 50m total
  • Ontario to London
Search Deals
Highest demand for flights based on searches. 11% potential increase in price (£52 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£15 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 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 7 June 2026.
Use the filters below to find and compare flights from Ontario to London Gatwick Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 23/9

07:05-09:25

2 stops18h 20m

London Gatwick

Mon 28/9

10:25-22:40

2 stops20h 15m

£680

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 1/9

13:50-14:40

2 stops16h 50m

London Gatwick

Wed 16/9

15:40-22:10

2 stops38h 30m

£755

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 1/9

13:50-14:40

2 stops16h 50m

London Gatwick

Tue 15/9

15:40-22:00

2 stops38h 20m

£755

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 22/7

07:05-09:25

2 stops18h 20m

London Gatwick

Wed 29/7

10:25-22:52

2 stops20h 27m

£814

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 31/8

14:00-14:40

2 stops16h 40m

London Gatwick

Wed 16/9

15:40-22:10

2 stops38h 30m

£837

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 4/7

06:20-09:20

2 stops19h 00m

London Gatwick

Tue 14/7

10:35-22:52

2 stops20h 17m

£893

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 3/11

12:00-22:35

2 stops26h 35m

London Gatwick

Tue 10/11

06:30-22:54

2 stops24h 24m

£938

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 22/6

06:00-16:00

2 stops26h 00m

London Gatwick

Thu 9/7

10:25-22:52

2 stops20h 27m

£1,003

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 22/6

11:50-16:00

2 stops20h 10m

London Gatwick

Wed 8/7

10:25-21:50

2 stops19h 25m

£1,004

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 25/8

13:50-14:40

2 stops16h 50m

London Gatwick

Mon 7/9

15:40-19:03

2 stops35h 23m

£1,021

Flights are sorted by cheapest return flights first.

Deals found on 7/6

Showing 1-10 of 23 resultsSorted by cheapest first
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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.

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 18h 20m. 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.

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
Hounslow
Milton Keynes
Wembley
Luton
Gatwick
Croydon
Ilford
Slough
Hayes
Brentford
Colchester
Kingston upon Thames
Eastbourne
Watford
Ipswich
Romford
Guildford
Borehamwood
Folkestone
Southall

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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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