Find flights
When to book
FAQs

Cheap flights from Ontario to London Gatwick Airport from £336

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 3/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LGW
8 May — 15 May1
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 8 April 2026.

Tue 21/414:08
ONT
-
LGW
2 stops21h 52m
Iberia
Wed 6/511:30
LGW
-
ONT
2 stops20h 16m
Iberia
Deal found 7/4£674
Tue 5/514:20
ONT
-
LGW
2 stops17h 40m
Delta
Wed 20/510:25
LGW
-
ONT
2 stops19h 23m
Delta
Deal found 5/4£681
Tue 21/414:08
ONT
-
LGW
2 stops21h 52m
Iberia
Tue 5/520:40
LGW
-
ONT
2 stops35h 06m
Iberia
Deal found 7/4£683
Thu 23/407:00
ONT
-
LGW
2 stops18h 25m
Delta
Thu 30/410:25
LGW
-
ONT
2 stops18h 35m
Delta
Deal found 4/4£719
Mon 20/410:33
ONT
-
LGW
2 stops20h 07m
Multiple Airlines
Thu 30/413:00
LGW
-
ONT
2 stops18h 59m
Multiple Airlines
Deal found 5/4£735
Wed 13/506:00
ONT
-
LGW
2 stops20h 40m
American Airlines
Tue 19/514:30
LGW
-
ONT
2 stops30h 48m
American Airlines
Deal found 8/4£744
Tue 1/915:02
ONT
-
LGW
2 stops15h 38m
Multiple Airlines
Thu 10/913:00
LGW
-
ONT
2 stops18h 24m
Multiple Airlines
Deal found 5/4£747
Thu 23/414:20
ONT
-
LGW
2 stops17h 40m
Delta
Mon 4/510:25
LGW
-
ONT
2 stops18h 35m
Delta
Deal found 6/4£756
Sat 25/410:39
ONT
-
LGW
2 stops20h 01m
Multiple Airlines
Mon 11/515:40
LGW
-
ONT
2 stops38h 52m
Multiple Airlines
Deal found 4/4£774
Tue 1/915:02
ONT
-
LGW
2 stops15h 38m
Multiple Airlines
Sat 19/915:40
LGW
-
ONT
2 stops27h 36m
Multiple Airlines
Deal found 5/4£785

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 8 April 2026.

Round-trip from

£674

One-way from

£336

Popular in

December

Cheapest in

September

Average price

£557
Iberia
  • Iberia
  • 21/4-6/5
  • 4 total stops
  • 42h 08m total
  • Ontario to London
Search Deals
3/6
  • 3/6
  • 3 total stops
  • 55h 46m total
  • Ontario to London
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£63 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 April 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 8 April 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

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 20/4

10:33-14:40

2 stops20h 07m

London Gatwick

Thu 30/4

13:00-23:59

2 stops18h 59m

£735
Fastest return journey

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 23/4

07:00-09:25

2 stops18h 25m

London Gatwick

Mon 4/5

10:25-21:00

2 stops18h 35m

£756

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Fri 1/5

10:39-22:25

2 stops27h 46m

London Gatwick

Mon 11/5

07:05-09:45

2 stops34h 40m

£806

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 6/5

10:39-22:30

2 stops27h 51m

London Gatwick

Wed 13/5

07:05-23:58

2 stops24h 53m

£806

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 1/9

10:55-14:40

2 stops19h 45m

London Gatwick

Mon 21/9

15:40-22:00

2 stops38h 20m

£830

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 3/5

06:00-22:25

2 stops32h 25m

London Gatwick

Sun 10/5

07:00-23:59

2 stops24h 59m

£837

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 3/10

12:00-14:40

2 stops18h 40m

London Gatwick

Sun 11/10

15:40-22:35

2 stops38h 55m

£949

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 2/6

22:41-13:10

2 stops30h 29m

London Gatwick

Mon 8/6

14:05-20:47

2 stops62h 42m

£1,004

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Fri 4/9

15:02-11:45

2 stops36h 43m

London Gatwick

Sat 19/9

15:40-23:24

2 stops39h 44m

£1,043
Cheapest one-way

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 1/9

23:50-16:40

2 stops32h 50m

£520

Flights are sorted by cheapest return flights first.

Deals found on 8/4

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 17h 40m. 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
Milton Keynes
Wembley
Croydon
Hounslow
Gatwick
Luton
Ilford
Slough
Hayes
Brentford
Colchester
Watford
Kingston upon Thames
Romford
Eastbourne
Chelmsford
Ipswich
Southend-on-Sea
Guildford
Bishop's Stortford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.