HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
London City

$428+ Cheap flights from Ontario (ONT) to London City (LCY)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/14. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LCY
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to London City with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Ontario to London City

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to London City (LCY). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$764
(United Airlines)

One-way from

$428
(United Airlines)

Popular in

December

Cheapest in

September

Average price

$617
Provider with most accurate pricing for Ontario-London City flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-London City flights.
Search Deals
From Ontario to London City
Search Deals
One-way flight from Ontario to London City
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($105 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Ontario to London City

Cheapest flights from Ontario to London City
Explore the most affordable flight options available from Ontario to London City. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 23, 2025.

This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/67:00 amONT - LCY
2 stops21h 55mMultiple Airlines
Mon 11/106:15 pmLCY - ONT
2 stops32h 21mMultiple Airlines
Deal found 10/21$764
This United Airlines deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/215:05 amONT - LCY
3 stops22h 35mMultiple Airlines
Thu 11/279:40 amLCY - ONT
2 stops34h 57mMultiple Airlines
Deal found 10/23$804
This YBTour deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure YBTour is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/612:12 pmONT - LCY
2 stops17h 03mKLM
Sat 12/1310:00 amLCY - ONT
2 stops45h 04mKLM
Deal found 10/22$830
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/297:00 amONT - LCY
2 stops22h 55mMultiple Airlines
Wed 11/59:50 amLCY - ONT
2 stops21h 01mMultiple Airlines
Deal found 10/22$895
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:50 pmONT - LCY
2 stops19h 50mMultiple Airlines
Sun 12/147:20 pmLCY - ONT
3 stops33h 22mMultiple Airlines
Deal found 10/22$1,093
This KAYAK deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/89:50 amONT - LCY
2 stops37h 25mVirgin Atlantic
Fri 11/146:55 pmLCY - ONT
2 stops34h 54mVirgin Atlantic
Deal found 10/21$1,239
This United Airlines deal was found by Cheapflights users on 10/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:50 pmONT - LCY
2 stops18h 50mMultiple Airlines
Thu 12/189:40 amLCY - ONT
2 stops21h 01mMultiple Airlines
Deal found 10/22$1,365
This United Airlines deal was found by Cheapflights users on 10/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:00 amONT - LCY
2 stops28h 45mMultiple Airlines
Sun 11/97:20 pmLCY - ONT
3 stops33h 24mMultiple Airlines
Deal found 10/21$1,439
This KLM deal was found by Cheapflights users on 10/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/207:05 amONT - LCY
2 stops16h 10mKLM
Wed 12/107:45 amLCY - ONT
2 stops19h 54mKLM
Deal found 10/23$1,502

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to London City 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, Cheapflights users made 2,558,603 searches. Data last updated October 23, 2025.
Use the filters below to find and compare flights from Ontario to London City Airport that are best for you.

Fly from

Ontario

Fly to

London City

Route

Depart

Return

Price

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 11/6

7:00 am-12:55 pm

2 stops21h 55m

London City

Mon 11/10

6:15 pm-6:36 pm

2 stops32h 21m

$764

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Fri 11/21

5:05 am-11:40 am

3 stops22h 35m

London City

Thu 11/27

9:40 am-12:37 pm

2 stops34h 57m

$804

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sat 12/6

12:12 pm-1:15 pm

2 stops17h 03m

London City

Sat 12/13

10:00 am-11:04 pm

2 stops45h 04m

$830

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sun 12/7

1:50 pm-5:40 pm

2 stops19h 50m

London City

Sun 12/14

7:20 pm-8:42 pm

3 stops33h 22m

$1,093

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Mon 1/19

7:16 am-2:35 pm

2 stops23h 19m

London City

Fri 1/23

7:50 am-10:49 pm

2 stops22h 59m

$1,139

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sat 11/8

9:50 am-7:15 am

2 stops37h 25m

London City

Fri 11/14

6:55 pm-9:49 pm

2 stops34h 54m

$1,239

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Sun 12/7

1:50 pm-4:40 pm

2 stops18h 50m

London City

Thu 12/18

9:40 am-10:41 pm

2 stops21h 01m

$1,365

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 11/20

7:05 am-7:15 am

2 stops16h 10m

London City

Wed 12/10

7:45 am-7:39 pm

2 stops19h 54m

$1,502

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Thu 1/1

10:42 am-5:40 pm

2 stops22h 58m

London City

Mon 1/5

6:15 pm-8:58 pm

2 stops34h 43m

$1,663

OntarioLondon

ONT - LCY

ONTLCY

Ontario

Tue 4/14

7:00 am-12:30 pm

2 stops21h 30m

$428

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/21

Showing 1-10 of 19 results
1
2
  • Most accurate provider: When it comes to deals on Ontario-London City Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-London City Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-London City Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-London City Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Ontario-London City Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Ontario to London City

Have a flexible travel schedule? Discover the best time to fly to London City from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to London City Airport

What is the cheapest month to book a flight from Ontario to London City Airport?

Currently, April is the cheapest month in which you can book a flight from Ontario to London City Airport (average of $559). Flying from Ontario to London City Airport in August is currently the most expensive (average of $1,005). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Ontario to London City. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to London City?

    For a flight from Ontario to London City, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city. Ontario is the only Ontario airport and it handles 0 outbound flights to London City per day. 0 airlines have flights to London City from Ontario on a regular basis.

  • How long is the flight from Ontario to London City Airport?

    For as low as $830, KLM can have you in London City Airport from Ontario in 17h 03m. Ontario and London City Airport are separated by a distance of 5422 mi.

  • Can I find deals for flights from Ontario to London City that include hotel bookings?

    Yes. In addition to deals on Ontario to London City flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to London City?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to London City.

  • Can I find deals for business class flights from Ontario to London City?

    Yes. Cheapflights offers flight deals from Ontario to London City by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to London City Airport?

    Currently, April is the cheapest month in which you can book a flight from Ontario to London City Airport (average of $559). Flying from Ontario to London City Airport in August is currently the most expensive (average of $1,005). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near London City Airport?

Book flights to London City Airport if you plan to visit one of these locations
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone
Eastbourne
Sutton

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to London City

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to Gatwick flights
Los Angeles to London City flights
San Francisco to Gatwick flights
San Francisco to London City flights
Ontario to Heathrow flights
Los Angeles to Luton flights
Santa Ana to Heathrow flights
San Diego to Heathrow flights
Los Angeles to Stansted flights
San Francisco to Luton flights
San Francisco to Stansted flights
Las Vegas to Heathrow flights
San Jose to Heathrow flights
San Diego to Gatwick flights
Oakland to Heathrow flights
Sacramento to Heathrow flights
Las Vegas to Gatwick flights
San Diego to London City flights
Las Vegas to London City flights
Ontario to Gatwick flights
San Jose to Gatwick flights
Burbank to Heathrow flights
Palm Springs to Heathrow flights
Oakland to Gatwick flights
Sacramento to Gatwick flights
Long Beach to Heathrow flights
Santa Rosa to Heathrow flights
Fresno to Heathrow flights
Santa Barbara to Heathrow flights
Reno to Heathrow flights
Las Vegas to Stansted flights
San Diego to Stansted flights
Santa Ana to Gatwick flights
Los Angeles to Southend flights
Sacramento to London City flights
Palm Springs to Gatwick flights
Santa Ana to London City flights
San Francisco to Southend flights
Burbank to Gatwick flights
San Luis Obispo to Heathrow flights
Reno to Gatwick flights
Fresno to Gatwick flights
Las Vegas to Luton flights
Palm Springs to London City flights
Medford to Heathrow flights
San Jose to London City flights
Medford to Gatwick flights
Arcata to Heathrow flights

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.