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Cheap flights from Ontario to London from $345

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 11/10. 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
1 adult, Economy, 0 bags

Find the cheapest flights from Ontario to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
1:04 pm - 4:40 pm
ONT
-
LCY
19h 36m
2 stops
Delta Logo
9:20 am - 10:40 pm
LCY
-
ONT
21h 20m
2 stops
$983Delta
Wed, Sep 23 - Mon, Sep 28
Multiple Airlines Logo
6:46 am - 12:50 pm
ONT
-
LCY
23h 04m
2 stops
Multiple Airlines Logo
12:20 pm - 6:29 pm
LCY
-
ONT
38h 09m
2 stops
$995Multiple Airlines
Thu, Oct 29 - Sat, Nov 7
Delta Logo
1:04 pm - 4:40 pm
ONT
-
LCY
19h 36m
2 stops
Delta Logo
9:20 am - 10:40 pm
LCY
-
ONT
21h 20m
2 stops
$1,013Delta
Wed, Sep 23 - Mon, Sep 28
British Airways Logo
10:29 am - 11:30 am
ONT
-
LCY
17h 01m
2 stops
British Airways Logo
3:30 pm - 10:59 pm
LCY
-
ONT
39h 29m
2 stops
$1,101British Airways
Tue, Sep 1 - Sun, Sep 6
KLM Logo
7:05 am - 7:15 am
ONT
-
LCY
16h 10m
2 stops
KLM Logo
7:45 am - 6:18 pm
LCY
-
ONT
18h 33m
2 stops
$1,143KLM
Tue, Nov 3 - Tue, Nov 17
KLM Logo
7:00 am - 7:15 am
ONT
-
LCY
16h 15m
2 stops
KLM Logo
7:45 am - 6:18 pm
LCY
-
ONT
18h 33m
2 stops
$1,342KLM
Tue, Dec 1 - Tue, Dec 8
KLM Logo
7:00 am - 7:15 am
ONT
-
LCY
16h 15m
2 stops
KLM Logo
7:45 am - 6:18 pm
LCY
-
ONT
18h 33m
2 stops
$1,343KLM
Tue, Dec 1 - Tue, Dec 8
Multiple Airlines Logo
9:10 pm - 8:25 am
ONT
-
LCY
27h 15m
2 stops
Multiple Airlines Logo
6:30 pm - 9:59 pm
LCY
-
ONT
35h 29m
2 stops
$1,348Multiple Airlines
Thu, Oct 1 - Sun, Oct 11
Iberia Logo
10:29 am - 3:15 pm
ONT
-
LCY
20h 46m
2 stops
Iberia Logo
9:35 am - 10:59 pm
LCY
-
ONT
21h 24m
2 stops
$1,385Iberia
Tue, Sep 1 - Tue, Sep 8
SWISS Logo
6:10 am - 8:25 am
ONT
-
LCY
18h 15m
2 stops
SWISS Logo
6:00 pm - 10:51 pm
LCY
-
ONT
36h 51m
2 stops
$1,396SWISS
Fri, Jul 24 - Mon, Jul 27

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KLM flights from Ontario to London City Airport

Our best KLM deals on Ontario to London City Airport flight tickets
KLM
Nov 3
ONT7:05 amOntario
16h 10m
2 stops
LCY7:15 amLondon City
Nov 17
LCY7:45 amLondon City
18h 33m
2 stops
ONT6:18 pmOntario
$1,143
KLM
Dec 1
ONT7:00 amOntario
16h 15m
2 stops
LCY7:15 amLondon City
Dec 8
LCY7:45 amLondon City
18h 33m
2 stops
ONT6:18 pmOntario
$1,342
KLM
Dec 1
ONT7:00 amOntario
16h 15m
2 stops
LCY7:15 amLondon City
Dec 8
LCY7:45 amLondon City
18h 33m
2 stops
ONT6:18 pmOntario
$1,343

Delta flights from Ontario to London City Airport

Our best Delta deals on Ontario to London City Airport flight tickets
Delta
Sep 23
ONT1:04 pmOntario
19h 36m
2 stops
LCY4:40 pmLondon City
Sep 28
LCY9:20 amLondon City
21h 20m
2 stops
ONT10:40 pmOntario
$983
Delta
Sep 23
ONT1:04 pmOntario
19h 36m
2 stops
LCY4:40 pmLondon City
Sep 28
LCY9:20 amLondon City
21h 20m
2 stops
ONT10:40 pmOntario
$1,013

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 July 11, 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

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 9/23

1:04 pm-4:40 pm

2 stops19h 36m

London City

Mon 9/28

9:20 am-10:40 pm

2 stops21h 20m

$983

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 10/29

6:46 am-12:50 pm

2 stops23h 04m

London City

Sat 11/7

12:20 pm-6:29 pm

2 stops38h 09m

$995

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Wed 9/23

1:04 pm-4:40 pm

2 stops19h 36m

London City

Mon 9/28

9:20 am-10:40 pm

2 stops21h 20m

$1,013

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 9/1

10:29 am-11:30 am

2 stops17h 01m

London City

Sun 9/6

3:30 pm-10:59 pm

2 stops39h 29m

$1,101
Quickest round-trip

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 11/3

7:05 am-7:15 am

2 stops16h 10m

London City

Tue 11/17

7:45 am-6:18 pm

2 stops18h 33m

$1,143

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 12/1

7:00 am-7:15 am

2 stops16h 15m

London City

Tue 12/8

7:45 am-6:18 pm

2 stops18h 33m

$1,342

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 12/1

7:00 am-7:15 am

2 stops16h 15m

London City

Tue 12/8

7:45 am-6:18 pm

2 stops18h 33m

$1,343

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 10/1

9:10 pm-8:25 am

2 stops27h 15m

London City

Sun 10/11

6:30 pm-9:59 pm

2 stops35h 29m

$1,348

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 9/1

10:29 am-3:15 pm

2 stops20h 46m

London City

Tue 9/8

9:35 am-10:59 pm

2 stops21h 24m

$1,385

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Fri 7/24

6:10 am-8:25 am

2 stops18h 15m

London City

Mon 7/27

6:00 pm-10:51 pm

2 stops36h 51m

$1,396

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?

Delta, United Airlines, and British Airways 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

16h 10m

Direct flights

None
The fastest flight from Ontario to London City Airport takes 16h 10m
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

Frequently asked questions about flying from Ontario to London City Airport

  • 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 16h 10m, 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
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Dover
Crawley
Wembley
Croydon
Stansted
Harrow
Slough
Watford
Brentwood
Ilford
Cobham
Folkestone
Guildford
Romford
Uxbridge

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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