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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 7/26. 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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Find the cheapest flights from Ontario to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
7:00 am - 9:30 am
ONT
-
LCY
18h 30m
2 stops
Delta Logo
10:00 am - 10:37 pm
LCY
-
ONT
20h 37m
2 stops
$1,328Delta
Thu, Apr 23 - Mon, May 4
Iberia Logo
2:22 pm - 9:10 am
ONT
-
LCY
34h 48m
2 stops
Iberia Logo
9:35 am - 6:57 pm
LCY
-
ONT
41h 22m
2 stops
$1,541Iberia
Wed, Aug 12 - Wed, Aug 19
Multiple Airlines Logo
7:08 pm - 12:45 pm
ONT
-
LCY
57h 37m
2 stops
Multiple Airlines Logo
7:15 pm - 11:46 pm
LCY
-
ONT
36h 31m
2 stops
$1,552Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
Iberia Logo
10:22 am - 3:15 pm
ONT
-
LCY
20h 53m
2 stops
Iberia Logo
9:35 am - 11:59 pm
LCY
-
ONT
22h 24m
2 stops
$1,691Iberia
Wed, May 27 - Wed, Jun 3
Iberia Logo
10:22 am - 3:15 pm
ONT
-
LCY
20h 53m
2 stops
Iberia Logo
9:35 am - 11:59 pm
LCY
-
ONT
22h 24m
2 stops
$1,699Iberia
Thu, May 28 - Fri, Jun 5
Multiple Airlines Logo
7:08 pm - 12:45 pm
ONT
-
LCY
57h 37m
2 stops
Multiple Airlines Logo
9:15 am - 9:50 pm
LCY
-
ONT
20h 35m
2 stops
$1,811Multiple Airlines
Thu, Apr 9 - Wed, Apr 15
Iberia Logo
10:22 am - 3:15 pm
ONT
-
LCY
20h 53m
2 stops
Iberia Logo
9:35 am - 11:59 pm
LCY
-
ONT
22h 24m
2 stops
$2,399Iberia
Wed, Jun 24 - Tue, Jun 30
British Airways Logo
11:59 pm - 1:20 pm
ONT
-
LCY
29h 21m
2 stops
British Airways Logo
2:05 pm - 11:59 pm
LCY
-
ONT
41h 54m
2 stops
$2,523British Airways
Sun, May 10 - Mon, Jul 13
Multiple Airlines Logo
11:15 am - 5:55 pm
ONT
-
LCY
22h 40m
2 stops
Multiple Airlines Logo
9:35 am - 11:59 pm
LCY
-
ONT
22h 24m
2 stops
$2,533Multiple Airlines
Mon, Jun 1 - Wed, Jun 10
British Airways Logo
11:59 pm - 11:30 am
ONT
-
LCY
27h 31m
2 stops
British Airways Logo
2:05 pm - 10:33 pm
LCY
-
ONT
40h 28m
2 stops
$2,574British Airways
Sat, May 9 - Mon, Jul 13

Iberia flights from Ontario to London City Airport

Our best Iberia deals on Ontario to London City Airport flight tickets
Iberia
Aug 12
ONT2:22 pmOntario
34h 48m
2 stops
LCY9:10 amLondon City
Aug 19
LCY9:35 amLondon City
41h 22m
2 stops
ONT6:57 pmOntario
$1,541
Iberia
May 27
ONT10:22 amOntario
20h 53m
2 stops
LCY3:15 pmLondon City
Jun 3
LCY9:35 amLondon City
22h 24m
2 stops
ONT11:59 pmOntario
$1,691
Iberia
May 28
ONT10:22 amOntario
20h 53m
2 stops
LCY3:15 pmLondon City
Jun 5
LCY9:35 amLondon City
22h 24m
2 stops
ONT11:59 pmOntario
$1,699

Delta flights from Ontario to London City Airport

Our best Delta deals on Ontario to London City Airport flight tickets
Delta
Apr 5
ONT5:09 pmOntario
15h 31m
2 stops
LCY4:40 pmLondon City
Apr 21
LCY9:20 amLondon City
19h 40m
2 stops
ONT9:00 pmOntario
$876
Delta
Apr 23
ONT7:00 amOntario
18h 30m
2 stops
LCY9:30 amLondon City
May 4
LCY10:00 amLondon City
20h 37m
2 stops
ONT10:37 pmOntario
$1,328
Delta
Apr 15
ONT5:05 pmOntario
15h 35m
2 stops
LCY4:40 pmLondon City
May 5
LCY9:20 amLondon City
19h 40m
2 stops
ONT9:00 pmOntario
$7,847

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 March 27, 2026.
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

Cheapest round-trip
Quickest round-trip

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 4/23

7:00 am-9:30 am

2 stops18h 30m

London City

Mon 5/4

10:00 am-10:37 pm

2 stops20h 37m

$1,328

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 8/12

2:22 pm-9:10 am

2 stops34h 48m

London City

Wed 8/19

9:35 am-6:57 pm

2 stops41h 22m

$1,541

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 4/9

7:08 pm-12:45 pm

2 stops57h 37m

London City

Thu 4/16

7:15 pm-11:46 pm

2 stops36h 31m

$1,552

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 5/27

10:22 am-3:15 pm

2 stops20h 53m

London City

Wed 6/3

9:35 am-11:59 pm

2 stops22h 24m

$1,691

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 5/28

10:22 am-3:15 pm

2 stops20h 53m

London City

Fri 6/5

9:35 am-11:59 pm

2 stops22h 24m

$1,699

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 4/9

7:08 pm-12:45 pm

2 stops57h 37m

London City

Wed 4/15

9:15 am-9:50 pm

2 stops20h 35m

$1,811

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 6/24

10:22 am-3:15 pm

2 stops20h 53m

London City

Tue 6/30

9:35 am-11:59 pm

2 stops22h 24m

$2,399

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sun 5/10

11:59 pm-1:20 pm

2 stops29h 21m

London City

Mon 7/13

2:05 pm-11:59 pm

2 stops41h 54m

$2,523

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Mon 6/1

11:15 am-5:55 pm

2 stops22h 40m

London City

Wed 6/10

9:35 am-11:59 pm

2 stops22h 24m

$2,533

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sat 5/9

11:59 pm-11:30 am

2 stops27h 31m

London City

Mon 7/13

2:05 pm-10:33 pm

2 stops40h 28m

$2,574

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 airline that flies from Ontario to London City?

United Airlines, KLM, and SWISS are the most popular carriers operating from Ontario to London City

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

20h 50m

Direct flights

None
The fastest flight from Ontario to London City Airport takes 20h 50m
There are no direct flights from Ontario to London City Airport. There are no popular flight routes from Ontario to London City Airport.
Search flight deals

  • 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 20h 50m, 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
Luton
Dover
Crawley
Slough
Wembley
Hayes
Croydon
Dartford
Brentwood
Guildford
Harrow
Cobham
Folkestone
Romford
Stansted
Watford
Richmond

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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