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Cheap flights from Ontario to London from $424

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 1/28. 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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Find the cheapest flights from Ontario to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Iberia Logo
7:10 am - 8:50 am
ONT
-
LCY
17h 40m2 stops
Iberia Logo
7:50 am - 11:59 pm
LCY
-
ONT
23h 09m2 stops
$882Iberia
Thu, Mar 5 - Thu, Mar 12
Multiple Airlines Logo
7:05 am - 8:50 am
ONT
-
LCY
17h 45m2 stops
Multiple Airlines Logo
5:50 pm - 4:12 pm
LCY
-
ONT
30h 22m2 stops
$1,114Multiple Airlines
Thu, Jan 1 - Thu, Jan 8
Iberia Logo
10:58 am - 2:05 pm
ONT
-
LCY
19h 07m2 stops
Iberia Logo
7:15 pm - 1:56 pm
LCY
-
ONT
26h 41m2 stops
$1,157Iberia
Wed, Feb 11 - Mon, Feb 16
Delta Logo
1:20 pm - 4:35 pm
ONT
-
LCY
20h 15m2 stops
Delta Logo
1:45 pm - 11:54 pm
LCY
-
ONT
18h 09m2 stops
$1,323Delta
Sun, Mar 22 - Sun, Mar 29
Delta Logo
12:41 pm - 4:35 pm
ONT
-
LCY
19h 54m2 stops
Delta Logo
8:40 am - 9:05 pm
LCY
-
ONT
20h 25m2 stops
$1,668Delta
Mon, Jan 5 - Tue, Jan 20
Delta Logo
10:29 pm - 1:15 pm
ONT
-
LCY
30h 46m2 stops
Delta Logo
10:00 am - 9:05 pm
LCY
-
ONT
19h 05m2 stops
$1,718Delta
Fri, Jan 2 - Thu, Jan 29
Delta Logo
10:29 pm - 1:15 pm
ONT
-
LCY
30h 46m2 stops
Delta Logo
1:45 pm - 9:05 pm
LCY
-
ONT
39h 20m2 stops
$1,768Delta
Fri, Jan 2 - Sun, Feb 1
Delta Logo
10:29 pm - 1:15 pm
ONT
-
LCY
30h 46m2 stops
Delta Logo
10:00 am - 9:05 pm
LCY
-
ONT
19h 05m2 stops
$1,804Delta
Fri, Jan 2 - Sat, Jan 31
Delta Logo
10:29 pm - 1:15 pm
ONT
-
LCY
30h 46m2 stops
Delta Logo
7:45 am - 9:05 pm
LCY
-
ONT
21h 20m2 stops
$1,853Delta
Fri, Jan 2 - Fri, Jan 30
Delta Logo
1:00 pm - 4:40 pm
ONT
-
LCY
19h 40m2 stops
Delta Logo
10:00 am - 10:40 pm
LCY
-
ONT
20h 40m2 stops
$4,669Delta
Wed, Apr 15 - Tue, May 5

Delta flights from Ontario to London City Airport

Our best Delta deals on Ontario to London City Airport flight tickets
Delta
Mar 22
ONT1:20 pmOntario
20h 15m
2 stops
LCY4:35 pmLondon City
Mar 29
LCY1:45 pmLondon City
18h 09m
2 stops
ONT11:54 pmOntario
$1,323
Find similar
Delta
Jan 5
ONT12:41 pmOntario
19h 54m
2 stops
LCY4:35 pmLondon City
Jan 20
LCY8:40 amLondon City
20h 25m
2 stops
ONT9:05 pmOntario
$1,668
Find similar
Delta
Jan 2
ONT10:29 pmOntario
30h 46m
2 stops
LCY1:15 pmLondon City
Jan 29
LCY10:00 amLondon City
19h 05m
2 stops
ONT9:05 pmOntario
$1,718
Find similar

Iberia flights from Ontario to London City Airport

Our best Iberia deals on Ontario to London City Airport flight tickets
Iberia
Mar 5
ONT7:10 amOntario
17h 40m
2 stops
LCY8:50 amLondon City
Mar 12
LCY7:50 amLondon City
23h 09m
2 stops
ONT11:59 pmOntario
$882
Find similar
Iberia
Feb 11
ONT7:16 amOntario
22h 49m
2 stops
LCY2:05 pmLondon City
Feb 16
LCY7:15 pmLondon City
26h 41m
2 stops
ONT1:56 pmOntario
$1,157
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to London City 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 December 18, 2025.
Use the filters below to find and compare flights from Ontario to London City Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 3/5

7:10 am-8:50 am

2 stops17h 40m

London City

Thu 3/12

7:50 am-11:59 pm

2 stops23h 09m

$882

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 1/1

7:05 am-8:50 am

2 stops17h 45m

London City

Thu 1/8

5:50 pm-4:12 pm

2 stops30h 22m

$1,114

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 2/11

10:58 am-2:05 pm

2 stops19h 07m

London City

Mon 2/16

7:15 pm-1:56 pm

2 stops26h 41m

$1,157

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sun 3/22

1:20 pm-4:35 pm

2 stops20h 15m

London City

Sun 3/29

1:45 pm-11:54 pm

2 stops18h 09m

$1,323

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Mon 1/5

12:41 pm-4:35 pm

2 stops19h 54m

London City

Tue 1/20

8:40 am-9:05 pm

2 stops20h 25m

$1,668

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Fri 1/2

10:29 pm-1:15 pm

2 stops30h 46m

London City

Thu 1/29

10:00 am-9:05 pm

2 stops19h 05m

$1,718

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Fri 1/2

10:29 pm-1:15 pm

2 stops30h 46m

London City

Sun 2/1

1:45 pm-9:05 pm

2 stops39h 20m

$1,768

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Fri 1/2

10:29 pm-1:15 pm

2 stops30h 46m

London City

Sat 1/31

10:00 am-9:05 pm

2 stops19h 05m

$1,804

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Fri 1/2

10:29 pm-1:15 pm

2 stops30h 46m

London City

Fri 1/30

7:45 am-9:05 pm

2 stops21h 20m

$1,853

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 4/15

1:00 pm-4:40 pm

2 stops19h 40m

London City

Tue 5/5

10:00 am-10:40 pm

2 stops20h 40m

$4,669

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 City 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 City Airport?

The cheapest day to depart from Ontario to London City Airport is on a Wednesday. Travelers who choose to depart for London City Airport on a Wednesday will often find tickets for as low as $695. Be sure to avoid booking your departure on a Monday as prices are generally higher than usual. According to our data, the average ticket price to London City Airport on Monday is $1,135.

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

Our most recent data shows that the best time of day to fly to London City Airport is in the afternoon. Flights from Ontario to London City Airport during this time can be as low as $763. Flights at noon are often more expensive with an average ticket price of $1,135.

When to book flights from Ontario to London City Airport

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

Cheap Ontario to London City Airport (ONT to LCY) flight deals and tips

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

Fastest flight time

15h 35m

Direct flights

None
The fastest flight from Ontario to London City Airport takes 15h 35m
There are no direct flights from Ontario to London City Airport. There are no popular flight routes from Ontario to London City Airport.
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  • How far is Ontario to London City by plane?

    The straight-line distance from Ontario to London City is 5422.9 mi. Flights usually cover this in 15h 35m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Ontario Airport to London City Airport are updated daily.

  • How old do you have to be to fly from Ontario Airport to London City 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 City Airport.

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

    The necessary travel and health documents for your London City 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
Gatwick
Hounslow
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Wembley
Watford
Ilford
Cobham
Folkestone
Romford
Richmond
Uxbridge
Stansted

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?

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 helps you find the best flight between Ontario and London by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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 City Airport trip

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