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Cheap flights from Ontario to London from £180

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to London departing on 13/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags
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Cheap return flights

Iberia Logo
06:10 - 10:50ONT-LGW
20h 40m2 stops
Iberia Logo
19:40 - 11:30LGW-ONT
23h 50m2 stops
£513Iberia
Find Deal
Tue, 2 Dec - Wed, 10 Dec
American Airlines Logo
23:59 - 07:30ONT-LGW
23h 31m2 stops
American Airlines Logo
12:30 - 14:57LGW-ONT
34h 27m2 stops
£585American Airlines
Find Deal
Mon, 29 Dec - Thu, 15 Jan
American Airlines Logo
23:59 - 07:30ONT-LGW
23h 31m2 stops
American Airlines Logo
12:30 - 14:57LGW-ONT
34h 27m2 stops
£586American Airlines
Find Deal
Mon, 29 Dec - Thu, 15 Jan
British Airways Logo
10:47 - 19:00ONT-LGW
24h 13m2 stops
British Airways Logo
19:40 - 18:17LGW-ONT
30h 37m2 stops
£696British Airways
Find Deal
Tue, 9 Dec - Mon, 15 Dec
Logo
08:00 - 09:20ONT-LGW
17h 20m1 stop
Logo
14:00 - 15:39LGW-ONT
33h 39m2 stops
£699
Find Deal
Tue, 23 Sep - Wed, 1 Oct
Logo
11:15 - 10:55ONT-LGW
15h 40m2 stops
Logo
11:55 - 22:05LGW-ONT
18h 10m2 stops
£720
Find Deal
Wed, 3 Dec - Thu, 11 Dec
Logo
08:00 - 09:20ONT-LGW
17h 20m1 stop
Logo
10:25 - 21:56LGW-ONT
19h 31m1 stop
£740
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Logo
08:00 - 09:20ONT-LGW
17h 20m1 stop
Logo
13:05 - 21:56LGW-ONT
40h 51m2 stops
£742
Find Deal
Tue, 23 Sep - Tue, 30 Sep
Logo
09:00 - 10:55ONT-LGW
18h 55m2 stops
Logo
11:55 - 23:32LGW-ONT
19h 37m2 stops
£743
Find Deal
Mon, 27 Oct - Fri, 7 Nov
British Airways Logo
10:47 - 19:00ONT-LGW
24h 13m2 stops
British Airways Logo
19:40 - 18:18LGW-ONT
30h 38m2 stops
£5,201British Airways
Find Deal
Mon, 1 Dec - Sat, 13 Dec

Iberia flights from Ontario to London Gatwick Airport

Our best Iberia deals on Ontario to London Gatwick Airport flight tickets
Iberia
2 Dec
ONT06:10Ontario
20h 40m
2 stops
LGW10:50London Gatwick
10 Dec
LGW19:40London Gatwick
23h 50m
2 stops
ONT11:30Ontario
£513
Find similar
Iberia
23 Sept
ONT12:47Ontario
23h 13m
2 stops
LGW20:00London Gatwick
30 Sept
LGW11:35London Gatwick
39h 19m
2 stops
ONT18:54Ontario
£867
Find similar
Iberia
24 Sept
ONT10:54Ontario
25h 06m
2 stops
LGW20:00London Gatwick
11 Oct
LGW11:35London Gatwick
19h 07m
2 stops
ONT22:42Ontario
£899
Find similar

American Airlines flights from Ontario to London Gatwick Airport

Our best American Airlines deals on Ontario to London Gatwick Airport flight tickets
American Airlines
29 Dec
ONT23:59Ontario
23h 31m
2 stops
LGW07:30London Gatwick
15 Jan
LGW12:30London Gatwick
34h 27m
2 stops
ONT14:57Ontario
£585
Find similar
American Airlines
29 Dec
ONT23:59Ontario
23h 31m
2 stops
LGW07:30London Gatwick
15 Jan
LGW12:30London Gatwick
34h 27m
2 stops
ONT14:57Ontario
£586
Find similar
American Airlines
28 Aug
ONT06:17Ontario
19h 03m
2 stops
LGW09:20London Gatwick
31 Aug
LGW12:20London Gatwick
19h 48m
2 stops
ONT00:08Ontario
£783
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Ontario to London Gatwick Airport 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, momondo users made 279,928 searches. Data last updated 28 August 2025.
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

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 2/12

06:10-10:50

2 stops20h 40m

London Gatwick

Wed 10/12

19:40-11:30

2 stops23h 50m

£513

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 29/12

23:59-07:30

2 stops23h 31m

London Gatwick

Thu 15/1

12:30-14:57

2 stops34h 27m

£585

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 29/12

23:59-07:30

2 stops23h 31m

London Gatwick

Thu 15/1

12:30-14:57

2 stops34h 27m

£586

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 9/12

10:47-19:00

2 stops24h 13m

London Gatwick

Mon 15/12

19:40-18:17

2 stops30h 37m

£696

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 23/9

08:00-09:20

1 stop17h 20m

London Gatwick

Wed 1/10

14:00-15:39

2 stops33h 39m

£699

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 3/12

11:15-10:55

2 stops15h 40m

London Gatwick

Thu 11/12

11:55-22:05

2 stops18h 10m

£720

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 23/9

08:00-09:20

1 stop17h 20m

London Gatwick

Tue 30/9

10:25-21:56

1 stop19h 31m

£740

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 23/9

08:00-09:20

1 stop17h 20m

London Gatwick

Tue 30/9

13:05-21:56

2 stops40h 51m

£742

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 27/10

09:00-10:55

2 stops18h 55m

London Gatwick

Fri 7/11

11:55-23:32

2 stops19h 37m

£742

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 1/12

10:47-19:00

2 stops24h 13m

London Gatwick

Sat 13/12

19:40-18:18

2 stops30h 38m

£5,201

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Ontario to London Gatwick Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London Gatwick Airport?

According to our data, Tuesday is the cheapest day to fly to London Gatwick Airport from Ontario. The lowest ticket price found for a Tuesday departure recently was £299. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Ontario to London Gatwick Airport on a Saturday will generally be more expensive and average around £541. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to London Gatwick Airport?

Our data shows that the cheapest Ontario to London Gatwick Airport flights are usually those with departure times in the afternoon. Our users have found flights to London Gatwick Airport in the afternoon for as low as £434. In contrast, the most expensive time of day to depart to London Gatwick Airport is in the morning when prices are around £544.

When to book flights from Ontario to London Gatwick Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to London Gatwick Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Ontario to London Gatwick Airport (ONT to LGW) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to London Gatwick Airport

Direct flights

None
There are no direct flights from Ontario to London Gatwick Airport. There are no popular flight routes from Ontario to London Gatwick Airport.
Search flight deals

  • How far is Ontario to London Gatwick by plane?

    The distance between Ontario and London Gatwick is about 5431.4 mi. In terms of flight time, this usually takes a little over 15h 34m.

  • When did momondo last update prices for flights from Ontario Airport to London Gatwick Airport?

    Prices for flights from Ontario Airport to London Gatwick Airport refresh daily.

  • How old do you have to be to fly from Ontario Airport to London Gatwick Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to London Gatwick Airport.

  • What documentation or ID do you need to fly to London Gatwick Airport?

    The travel and health documents you'll need for your trip to London Gatwick Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Gatwick Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Maidstone
Slough
Gatwick
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Worthing
Dartford
Chelmsford
Dover
Hounslow
Hayes
Folkestone
Stansted

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to London . Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to London with flexible booking policies on momondo?

Flights from Ontario to London with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Ontario to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to London.

I’m not ready to book a flight from Ontario to London right now. Can momondo alert me if prices change?

Price alerts on flights to London from Ontario are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your London Gatwick Airport trip

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