$394+ Cheap flights from London (LON) to Ontario (ONT)
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 3/26. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from London to Ontario 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.The best prices from London to Ontario are usually found in January or April, booked 58 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday
Cheap flight deals from London to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Ontario (ONT). 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 January 21, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $491 (The Travel House) |
One-way from | $394 (Kiwi.com) |
Popular in | August |
Cheapest in | January |
Average price | $578 |
Find flight deals from London to Ontario
Cheapest flights from London to OntarioExplore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.
Explore the most affordable flight options available from London to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.
This The Travel House deal was found by Cheapflights users on 1/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 1/20. 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.
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This The Travel House deal was found by Cheapflights users on 1/20. 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 The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This TravelUp deal was found by Cheapflights users on 1/19. 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 TravelUp is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Lufthansa deal was found by Cheapflights users on 1/20. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 1/20. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 1/20. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This American Airlines deal was found by Cheapflights users on 1/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Iberia deal was found by Cheapflights users on 1/19. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 1/21. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Iberia deal was found by Cheapflights users on 1/20. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Find flights from London to Ontario within your budget
Customize your flight search to find flights from London to Ontario 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 January 21, 2025.
Fly from
Fly to
Route
Depart
Return
Price
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 4/21
7:25 am-8:42 pm
2 stops21h 17m
Ontario
Mon 5/12
5:05 am-12:20 pm
1 stop23h 15m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 2/17
9:30 am-9:15 am
2 stops31h 45m
Ontario
Mon 2/24
6:00 am-7:25 am
1 stop17h 25m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Tue 2/18
1:50 pm-10:16 pm
1 stop16h 26m
Ontario
Mon 2/24
2:54 pm-12:05 pm
1 stop13h 11m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Wed 2/19
3:50 pm-10:32 pm
1 stop14h 42m
Ontario
Tue 2/25
1:05 pm-10:35 am
1 stop13h 30m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 2/17
9:20 am-9:59 pm
1 stop20h 39m
Ontario
Mon 2/24
6:00 am-7:30 am
1 stop17h 30m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Mon 3/3
8:40 am-10:52 pm
2 stops22h 12m
Ontario
Mon 3/10
1:30 pm-10:00 am
1 stop13h 30m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Tue 2/18
10:40 am-6:35 pm
1 stop15h 55m
Ontario
Tue 2/25
4:25 pm-1:20 pm
1 stop12h 55m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Thu 2/20
6:20 am-4:28 pm
2 stops18h 08m
Ontario
Wed 2/26
7:05 am-7:55 am
1 stop16h 50m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Thu 2/20
10:05 am-11:53 pm
2 stops21h 48m
Ontario
Wed 2/26
10:51 am-12:05 pm
1 stop17h 14m
LondonOntario
LHR - ONT
LHRONT
London Heathrow
Tue 2/18
10:40 am-6:35 pm
1 stop15h 55m
Ontario
Sat 2/22
10:50 pm-7:00 am
1 stop24h 10m
Compare providers for flights from London to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Ontario in January.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on London-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on London-Ontario 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 London-Ontario 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 London to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from London with our price prediction graph.
Travel insights for flights from London to Ontario
Get recent, data-driven insights about flights from London to Ontario including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from London to Ontario?
Use this chart to determine the optimal time to book a round-trip flight from London to Ontario. Price data was last updated on January 17, 2025.
Booking 58 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Ontario. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from London to Ontario?
Currently, August is the cheapest month in which you can book a flight from London to Ontario (average of $246). Flying from London to Ontario in March is currently the most expensive (average of $311). 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.
What is the cheapest time of day to fly from LON to ONT?
Find hourly flight availability from London to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated January 21, 2025.
A simple way to save on the total cost of your ticket is to fly from London to Ontario in the afternoon. If you’re flexible enough to do this you can expect to save up to 27% on your trip compared to booking a flight at noon.
Rainfall in Ontario by month
Plan your trip to Ontario by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.
Temperature in Ontario by month
Plan your trip to Ontario by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated January 21, 2025.
Peruse reviews from past customers who have flown with Delta, British Airways and Iberia from London to Ontario to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
Boarding
Food
Entertainment
Overall
Comfort
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Crew
Boarding
Food
Entertainment
Overall
Comfort
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Crew
Boarding
Food
Entertainment
Overall
Comfort
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Crew
Boarding
Food
Entertainment
Overall
Comfort
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Crew
Boarding
Food
Entertainment
Overall
Comfort
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Crew
Boarding
Food
Entertainment
Overall
Comfort
Reviews
Delta has consistently been the best U.S. airline for my travels and this flight was no exception