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Cheap flights from Ontario to London from $388

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 8/19. 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

KAYAK's recommended round-trip deals from the most popular airlines that fly from Ontario to London.
Lufthansa Logo
1:15 pm - 9:40 amONT-LHR
12h 25m1 stop
Lufthansa Logo
11:25 am - 5:17 pmLHR-ONT
13h 52m1 stop
$668Lufthansa
Find Deal
Tue, Sep 23 - Tue, Oct 21
Lufthansa Logo
1:15 pm - 9:40 amONT-LHR
12h 25m1 stop
Lufthansa Logo
11:25 am - 5:17 pmLHR-ONT
13h 52m1 stop
$673Lufthansa
Find Deal
Tue, Sep 30 - Wed, Oct 15
Air Canada Logo
6:38 pm - 10:00 amONT-LHR
31h 22m2 stops
Air Canada Logo
2:10 pm - 5:37 pmLHR-ONT
35h 27m2 stops
$695Air Canada
Find Deal
Mon, Aug 11 - Fri, Aug 22
United Airlines Logo
4:15 pm - 12:20 pmONT-LHR
12h 05m1 stop
United Airlines Logo
9:30 am - 8:34 pmLHR-ONT
19h 04m2 stops
$705United Airlines
Find Deal
Tue, May 6 - Tue, May 13
United Airlines Logo
1:20 pm - 9:40 amONT-LHR
12h 20m1 stop
United Airlines Logo
9:30 am - 8:34 pmLHR-ONT
19h 04m2 stops
$707United Airlines
Find Deal
Wed, May 7 - Wed, May 14
Delta Logo
11:29 am - 2:15 pmONT-LHR
18h 46m1 stop
Delta Logo
9:20 am - 7:42 pmLHR-ONT
18h 22m1 stop
$717Delta
Find Deal
Wed, Aug 27 - Thu, Sep 11
British Airways Logo
12:45 pm - 2:25 pmONT-LHR
17h 40m1 stop
British Airways Logo
4:25 pm - 11:43 pmLHR-ONT
15h 18m1 stop
$719British Airways
Find Deal
Wed, May 7 - Wed, May 14
Delta Logo
12:00 pm - 6:45 amONT-LHR
34h 45m1 stop
Delta Logo
11:20 am - 7:42 pmLHR-ONT
16h 22m1 stop
$723Delta
Find Deal
Sun, Aug 31 - Fri, Sep 12
British Airways Logo
8:43 am - 9:00 amONT-LHR
16h 17m1 stop
British Airways Logo
8:20 am - 5:40 pmLHR-ONT
17h 20m1 stop
$812British Airways
Find Deal
Wed, Sep 17 - Wed, Oct 1
American Airlines Logo
12:59 am - 6:35 amONT-LGW
21h 36m2 stops
American Airlines Logo
10:25 am - 9:38 pmLGW-ONT
19h 13m2 stops
$1,018American Airlines
Find Deal
Sun, Jul 13 - Thu, Jul 24

Icelandair flights from Ontario to London

Our best Icelandair deals on Ontario to London flight tickets
Icelandair
Sep 30
ONT11:00 pmOntario
13h 45m
1 stop
LHR8:45 pmLondon Heathrow
Oct 15
LHR8:25 amLondon Heathrow
21h 16m
2 stops
ONT9:41 pmOntario
Icelandair
Sep 23
ONT11:00 pmOntario
13h 45m
1 stop
LHR8:45 pmLondon Heathrow
Oct 21
LHR8:25 amLondon Heathrow
21h 16m
2 stops
ONT9:41 pmOntario
Icelandair
May 23
ONT10:59 pmOntario
13h 46m
1 stop
LHR8:45 pmLondon Heathrow
May 30
LHR8:15 amLondon Heathrow
20h 56m
1 stop
ONT9:11 pmOntario

Lufthansa flights from Ontario to London

Our best Lufthansa deals on Ontario to London flight tickets
Lufthansa
Sep 23
ONT1:15 pmOntario
12h 25m
1 stop
LHR9:40 amLondon Heathrow
Oct 21
LHR11:25 amLondon Heathrow
13h 52m
1 stop
ONT5:17 pmOntario
Lufthansa
Sep 30
ONT1:15 pmOntario
12h 25m
1 stop
LHR9:40 amLondon Heathrow
Oct 15
LHR11:25 amLondon Heathrow
13h 52m
1 stop
ONT5:17 pmOntario

See travel insights to London from

How to get the cheapest flight ticket from Ontario to London

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 typical price of a round-trip flight between Ontario and London?

What is the cheapest month to fly to London?

The cheapest month to fly to London from Ontario is in October. Flight prices, which tend to average around $668, are often lower during this time because this is during the off-season. The month of January is another great option to travel to London, with average flight prices from Ontario averaging around $683.

What is the cheapest day to depart on your flight to London?

The cheapest day to depart from Ontario to London is on a Wednesday. Travelers who choose to depart for London on a Wednesday will often find tickets for as low as $802. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $930. These prices are subject to change though, so be sure to set up a Price Alert for flights to London.

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

Flying to London from Ontario in the morning is the least expensive time of day to depart. momondo users have found prices as low as $755 when looking at flights departing in the morning. Flights to London are more costly at noon, with an average ticket price of $900. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

How far in advance should I book a flight to London?

You are more likely to see cheaper flights to London from Ontario when booking 16 weeks ahead of your departure date. In general, you can expect to find flights to London for around $828 when searching 16 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London from Ontario for as low as $731 on momondo.

When to book flights from Ontario to London

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

Cheap Ontario to London (ONT to LON) flight deals and tips

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

Best Price Found

$388

Fastest flight time

12h 00m

Direct flights

None

Airports in London

2 airports
The best one-way flight to London from Ontario in the past 72 hours is $388. The best round-trip flight deal from Ontario to London found on momondo in the last 72 hours is $668.
The fastest flight from Ontario to London takes 12h 00m
There are no direct flights from Ontario to London. Popular non-direct routes for this connection are Ontario Airport - London Gatwick Airport and Ontario Airport - London Heathrow Airport.
There are 2 airports near London: London Heathrow (LHR), London Gatwick (LGW)

  • How far is Ontario to London by plane?

    The straight-line distance from Ontario to London is 5417.5 mi. A reasonable flight in good conditions will take 12h 05m.

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

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

  • How many operators does momondo search for flights from Ontario Airport to London?

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

    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.

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

    The necessary travel and health documents for your London 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.

  • What is the most popular airline from Ontario to London?


Best airlines flying from Ontario to London

Compare and see reviews for airlines that fly from Ontario to London with momondo
Airline
Rating
Free Cancellation
Price
Virgin AtlanticPriceFrom $454Free CancellationRating
7.4
642 reviews
Search Virgin Atlantic flights
IberiaPriceFrom $582Free CancellationRating
7.0
2,684 reviews
Search Iberia flights
DeltaPriceFrom $598Free CancellationRating
8.0
7,920 reviews
Search Delta flights
British AirwaysPriceFrom $629Free CancellationRating
6.6
6,805 reviews
Search British Airways flights
United AirlinesPriceFrom $629Free CancellationRating
7.4
8,685 reviews
Search United Airlines flights
American AirlinesPriceFrom $629Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Croydon
Luton
Guildford
Slough
Hayes
Dartford
Dover
Stansted
Ilford
Milton Keynes
Canterbury
Colchester
Horley
Wembley
Chelmsford
Richmond
Crawley
Hook

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to London?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to London. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Ontario to London with flexible booking policies on momondo?

All flight searches from Ontario to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ontario to London.

I’m not ready to book a flight from Ontario to London right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Ontario to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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Mon 4/28
Mon 5/5

Find better results for your trip to the United Kingdom

Fly into one of these airports located in London

Airports listed have a maximum distance of 35.6 mi from London