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Cheap flights from Ontario to London from $514

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 7/9. 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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Find the cheapest flights from Ontario to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:05 am - 9:40 am
ONT
-
LGW
18h 35m
2 stops
Delta Logo
10:25 am - 10:45 pm
LGW
-
ONT
20h 20m
2 stops
$909Delta
Mon, Aug 3 - Fri, Aug 28
Delta Logo
7:00 am - 9:25 am
ONT
-
LGW
18h 25m
2 stops
Delta Logo
10:25 am - 10:40 pm
LGW
-
ONT
20h 15m
2 stops
$1,059Delta
Wed, Sep 23 - Mon, Sep 28
Multiple Airlines Logo
10:55 am - 2:40 pm
ONT
-
LGW
19h 45m
2 stops
Multiple Airlines Logo
3:40 pm - 10:00 pm
LGW
-
ONT
38h 20m
2 stops
$1,106Multiple Airlines
Tue, Sep 15 - Tue, Sep 22
Icelandair Logo
2:14 pm - 2:40 pm
ONT
-
LGW
16h 26m
2 stops
Icelandair Logo
11:55 am - 11:42 pm
LGW
-
ONT
18h 47m
2 stops
$1,180Icelandair
Sat, Oct 3 - Wed, Oct 28
Icelandair Logo
2:14 pm - 2:40 pm
ONT
-
LGW
16h 26m
2 stops
Icelandair Logo
3:40 pm - 11:42 pm
LGW
-
ONT
40h 02m
2 stops
$1,182Icelandair
Sat, Oct 10 - Mon, Oct 19
Multiple Airlines Logo
3:12 pm - 2:40 pm
ONT
-
LGW
15h 28m
2 stops
Multiple Airlines Logo
3:40 pm - 10:35 pm
LGW
-
ONT
38h 55m
2 stops
$1,183Multiple Airlines
Sat, Sep 26 - Wed, Oct 7
Multiple Airlines Logo
3:05 pm - 2:40 pm
ONT
-
LGW
15h 35m
2 stops
Multiple Airlines Logo
1:00 pm - 10:00 pm
LGW
-
ONT
17h 00m
2 stops
$1,226Multiple Airlines
Fri, Aug 21 - Tue, Aug 25
Multiple Airlines Logo
12:00 pm - 10:35 pm
ONT
-
LGW
26h 35m
2 stops
Multiple Airlines Logo
6:25 am - 2:47 pm
LGW
-
ONT
40h 22m
2 stops
$1,231Multiple Airlines
Wed, Nov 4 - Sun, Nov 15
Multiple Airlines Logo
3:12 pm - 2:40 pm
ONT
-
LGW
15h 28m
2 stops
Multiple Airlines Logo
3:40 pm - 11:42 pm
LGW
-
ONT
40h 02m
2 stops
$1,233Multiple Airlines
Thu, Oct 1 - Sat, Oct 10
Icelandair Logo
12:00 pm - 2:40 pm
ONT
-
LGW
18h 40m
2 stops
Icelandair Logo
11:55 am - 10:39 pm
LGW
-
ONT
17h 44m
2 stops
$1,245Icelandair
Fri, Oct 16 - Thu, Oct 29

Turkish Airlines flights from Ontario to London Gatwick Airport

Our best Turkish Airlines deals on Ontario to London Gatwick Airport flight tickets
Turkish Airlines
Aug 21
ONT11:50 pmOntario
50h 05m
2 stops
LGW9:55 amLondon Gatwick
Sep 7
LGW5:35 pmLondon Gatwick
58h 38m
2 stops
ONT8:13 pmOntario
$1,530
Turkish Airlines
May 23
ONT10:41 pmOntario
27h 14m
2 stops
LGW9:55 amLondon Gatwick
May 31
LGW5:35 pmLondon Gatwick
59h 12m
2 stops
ONT8:47 pmOntario
$1,844
Turkish Airlines
May 22
ONT10:41 pmOntario
51h 14m
2 stops
LGW9:55 amLondon Gatwick
Jun 1
LGW5:35 pmLondon Gatwick
59h 12m
2 stops
ONT8:47 pmOntario
$2,016

Icelandair flights from Ontario to London Gatwick Airport

Our best Icelandair deals on Ontario to London Gatwick Airport flight tickets
Icelandair
Oct 3
ONT2:14 pmOntario
16h 26m
2 stops
LGW2:40 pmLondon Gatwick
Oct 28
LGW11:55 amLondon Gatwick
18h 47m
2 stops
ONT11:42 pmOntario
$1,180
Icelandair
Oct 10
ONT2:14 pmOntario
16h 26m
2 stops
LGW2:40 pmLondon Gatwick
Oct 19
LGW3:40 pmLondon Gatwick
40h 02m
2 stops
ONT11:42 pmOntario
$1,182
Icelandair
Oct 16
ONT12:00 pmOntario
18h 40m
2 stops
LGW2:40 pmLondon Gatwick
Oct 29
LGW11:55 amLondon Gatwick
17h 44m
2 stops
ONT10:39 pmOntario
$1,245

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated May 9, 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 round-trip

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Mon 8/3

7:05 am-9:40 am

2 stops18h 35m

London Gatwick

Fri 8/28

10:25 am-10:45 pm

2 stops20h 20m

$909

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 9/23

7:00 am-9:25 am

2 stops18h 25m

London Gatwick

Mon 9/28

10:25 am-10:40 pm

2 stops20h 15m

$1,059

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Tue 9/15

10:55 am-2:40 pm

2 stops19h 45m

London Gatwick

Tue 9/22

3:40 pm-10:00 pm

2 stops38h 20m

$1,106

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 10/3

2:14 pm-2:40 pm

2 stops16h 26m

London Gatwick

Wed 10/28

11:55 am-11:42 pm

2 stops18h 47m

$1,180

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 10/10

2:14 pm-2:40 pm

2 stops16h 26m

London Gatwick

Mon 10/19

3:40 pm-11:42 pm

2 stops40h 02m

$1,182

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Sat 9/26

3:12 pm-2:40 pm

2 stops15h 28m

London Gatwick

Wed 10/7

3:40 pm-10:35 pm

2 stops38h 55m

$1,183
Quickest round-trip

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Fri 8/21

3:05 pm-2:40 pm

2 stops15h 35m

London Gatwick

Tue 8/25

1:00 pm-10:00 pm

2 stops17h 00m

$1,226

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Wed 11/4

12:00 pm-10:35 pm

2 stops26h 35m

London Gatwick

Sun 11/15

6:25 am-2:47 pm

2 stops40h 22m

$1,231

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Thu 10/1

3:12 pm-2:40 pm

2 stops15h 28m

London Gatwick

Sat 10/10

3:40 pm-11:42 pm

2 stops40h 02m

$1,233

OntarioLondon

ONT - LGW

ONTLGW

Ontario

Fri 10/16

12:00 pm-2:40 pm

2 stops18h 40m

London Gatwick

Thu 10/29

11:55 am-10:39 pm

2 stops17h 44m

$1,245

Flights are sorted by cheapest round-trip 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?

The cheapest day to depart from Ontario to London Gatwick Airport is on a Tuesday when prices can be found for as low as $591. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to London Gatwick Airport on Thursday is $716.

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 round-trip 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

Fastest flight time

15h 28m

Direct flights

None
The fastest flight from Ontario to London Gatwick Airport takes 15h 28m
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

Frequently asked questions about flying from Ontario to London Gatwick Airport

  • How far is Ontario to London Gatwick by plane?

    The straight-line distance from Ontario to London Gatwick is 5431.4 mi. Flights usually cover this in 15h 28m, depending on flying conditions and air traffic around both airports.

  • 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 are updated daily.

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to London Gatwick Airport.

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

    The necessary travel and health documents for your London Gatwick Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Dover
Luton
Hayes
Crawley
Wembley
Slough
Stansted
Watford
Croydon
Brentwood
Dartford
Cobham
Folkestone
Romford
Harrow
Uxbridge
Guildford

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Ontario.

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

momondo does allow users to show only those flights to London from Ontario which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for Ontario to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Of course. momondo tracks the price of Ontario to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your London Gatwick Airport trip

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