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Cheap flights from Ontario to London from £313

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 7/12. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
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Cheap return flights

Enter your travel dates to find the best prices.
Iberia Logo
06:10 - 10:50ONT-LGW
20h 40m2 stops
Iberia Logo
19:40 - 11:53LGW-ONT
24h 13m2 stops
£633Iberia
Find Deal
Tue, 2 Dec - Wed, 10 Dec
American Airlines Logo
06:47 - 09:00ONT-LGW
18h 13m2 stops
American Airlines Logo
12:30 - 17:49LGW-ONT
36h 19m2 stops
£638American Airlines
Find Deal
Wed, 4 Mar - Sun, 8 Mar
Iberia Logo
10:58 - 19:00ONT-LGW
48h 02m2 stops
Iberia Logo
11:45 - 14:18LGW-ONT
34h 33m2 stops
£640Iberia
Find Deal
Mon, 12 Jan - Wed, 28 Jan
Iberia Logo
10:58 - 10:50ONT-LGW
39h 52m2 stops
Iberia Logo
11:45 - 22:49LGW-ONT
43h 04m2 stops
£686Iberia
Find Deal
Sat, 31 Jan - Sat, 7 Feb
American Airlines Logo
10:38 - 07:30ONT-LGW
36h 52m2 stops
American Airlines Logo
12:30 - 09:31LGW-ONT
29h 01m2 stops
£687American Airlines
Find Deal
Thu, 26 Feb - Mon, 2 Mar
Multiple Airlines Logo
11:15 - 10:55ONT-LGW
15h 40m2 stops
Multiple Airlines Logo
11:55 - 23:29LGW-ONT
19h 34m2 stops
£712Multiple Airlines
Find Deal
Wed, 3 Dec - Thu, 11 Dec
Iberia Logo
06:00 - 10:50ONT-LGW
20h 50m2 stops
Iberia Logo
19:40 - 22:49LGW-ONT
35h 09m2 stops
£716Iberia
Find Deal
Sat, 31 Jan - Fri, 6 Feb
Iberia Logo
10:58 - 10:50ONT-LGW
39h 52m2 stops
Iberia Logo
11:45 - 22:49LGW-ONT
43h 04m2 stops
£724Iberia
Find Deal
Sat, 31 Jan - Sun, 8 Feb
British Airways Logo
15:09 - 20:00ONT-LGW
44h 51m2 stops
British Airways Logo
20:40 - 23:40LGW-ONT
35h 00m2 stops
£1,032British Airways
Find Deal
Sun, 29 Mar - Wed, 8 Apr
British Airways Logo
15:09 - 20:00ONT-LGW
44h 51m2 stops
British Airways Logo
20:40 - 23:40LGW-ONT
35h 00m2 stops
£1,107British Airways
Find Deal
Sun, 29 Mar - Tue, 7 Apr

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
24h 13m
2 stops
ONT11:53Ontario
£633
Find similar
Iberia
12 Jan
ONT10:58Ontario
48h 02m
2 stops
LGW19:00London Gatwick
28 Jan
LGW11:45London Gatwick
34h 33m
2 stops
ONT14:18Ontario
£640
Find similar
Iberia
31 Jan
ONT10:58Ontario
39h 52m
2 stops
LGW10:50London Gatwick
7 Feb
LGW11:45London Gatwick
43h 04m
2 stops
ONT22:49Ontario
£686
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
4 Mar
ONT06:47Ontario
18h 13m
2 stops
LGW09:00London Gatwick
8 Mar
LGW12:30London Gatwick
36h 19m
2 stops
ONT17:49Ontario
£638
Find similar
American Airlines
26 Feb
ONT10:38Ontario
36h 52m
2 stops
LGW07:30London Gatwick
2 Mar
LGW12:30London Gatwick
29h 01m
2 stops
ONT09:31Ontario
£687
Find similar
American Airlines
29 Nov
ONT09:59Ontario
37h 31m
2 stops
LGW07:30London Gatwick
15 Dec
LGW12:30London Gatwick
37h 47m
2 stops
ONT18:17Ontario
£744
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 15 October 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

19:40-11:53

2 stops24h 13m

£633

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 4/3

06:47-09:00

2 stops18h 13m

London Gatwick

Sun 8/3

12:30-17:49

2 stops36h 19m

£638

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 12/1

10:58-19:00

2 stops48h 02m

London Gatwick

Wed 28/1

11:45-14:18

2 stops34h 33m

£640

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 31/1

10:58-10:50

2 stops39h 52m

London Gatwick

Sat 7/2

11:45-22:49

2 stops43h 04m

£686

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 26/2

10:38-07:30

2 stops36h 52m

London Gatwick

Mon 2/3

12:30-09:31

2 stops29h 01m

£687

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 3/12

11:15-10:55

2 stops15h 40m

London Gatwick

Thu 11/12

11:55-23:29

2 stops19h 34m

£712

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 31/1

06:00-10:50

2 stops20h 50m

London Gatwick

Fri 6/2

19:40-22:49

2 stops35h 09m

£716

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 31/1

10:58-10:50

2 stops39h 52m

London Gatwick

Sun 8/2

11:45-22:49

2 stops43h 04m

£724

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 29/3

15:09-20:00

2 stops44h 51m

London Gatwick

Wed 8/4

20:40-23:40

2 stops35h 00m

£1,032

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sun 29/3

15:09-20:00

2 stops44h 51m

London Gatwick

Tue 7/4

20:40-23:40

2 stops35h 00m

£1,107

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

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 £302. 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 £545. 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 £442. In contrast, the most expensive time of day to depart to London Gatwick Airport is in the morning when prices are around £550.

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 40m.

  • 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
Gatwick
Maidstone
Slough
Canterbury
Southend-on-Sea
Ipswich
Ilford
Guildford
Colchester
Dover
Hayes
Chelmsford
Worthing
Dartford
Bedford
Ramsgate
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.

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