Menu

Cheap flights from Ontario (ONT) to London (LON)

Know your dates, get live prices in seconds:

From
To
Depart
–
Return
Any month
Compare vs. Cheapflights |
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
Add another flight clear all

We work with more than 300 partners to bring you better travel deals

The best prices from Ontario to London are usually found in March or April, booked 41 days in advance, depart on a Tuesday or Sunday and return on a Sunday

Cheap flights from Ontario to London
+60.0%
+40.0%
+20.0%
Base
Price
$501 - $779
Temperature
48 - 73 °F
Rainfall
1 - 3 inches
Most popular in July High demand for flights, 14% potential price rise
Cheapest in March Best time to find cheap flights, 3% potential price drop
Average price $652 Price for this month
Cheapest price $501 From Ontario to London

Cheap flights from Ontario to London in September 2019

The best prices found for ONT to LGW flights for September
29 Sep - 10 Oct
$910pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
30 Sep - 14 Oct
$910pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
26 Sep - 13 Oct
$955pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario

Ontario to London 2019 flight deals

Cheap flights to London from Ontario found for this year
19 Oct - 3 Nov
$374pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
24 Oct - 2 Nov
$374pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
25 Oct - 4 Nov
$374pp
ONT
Ontario
American Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
American Airlines
 
1 STOP
ONT
Ontario

Last minute flights from Ontario to London

Late deals on round-trip flights to London from Ontario, departing today and this week
26 Sep - 13 Oct
$955pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
21 Sep - 7 Oct
$1240pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario
23 Sep - 30 Sep
$1240pp
ONT
Ontario
United Airlines
 
1 STOP
LHR
London Heathrow
LHR
London Heathrow
United Airlines
 
1 STOP
ONT
Ontario

Alternative routes for Ontario to London

Los Angeles to Exeter from $1482 pp

Destination information for London

Things to know before you go. Useful info for your trip from Ontario to London
Today's exchange rate
$1.00 = £0.81
Average temperature for September in London
68.0 °F
Avg rainfall for September in London
1.9 ″

Airports servicing Ontario

Ontario (ONT)

Airports servicing London

Southend (SEN)
Stansted (STN)
City (LCY)
Gatwick (LGW)
Heathrow (LHR)
Luton (LTN)

Popular flight searches

Check out other popular destinations found by fellow travelers
Over the next ten days, the expected rainfall is likely to be 2 inches more in London than in Ontario .
The weather in London is likely to be 68°F for the next ten days.
According to recent data, direct flights from Ontario to London are not currently available on every day of the week.
Which airlines fly from Ontario to London?
Our recent data shows 0 airline is currently operating direct flights from Ontario to London .
18 users have been comparing flight prices between Ontario and London this week.