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Get United's best fares today on flights from Ontario to London from *

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Low fare calendar for flights from Ontario (ONT) to London (LHR)

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from
$929*
Viewed:19 hours ago
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Return:01/31/20
25
from
$929*
Viewed:2 hours ago
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Return:02/08/20
26
from
$929*
Viewed:2 hours ago
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Return:02/02/20
27
from
$929*
Viewed:2 hours ago
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Return:02/10/20
28
from
$879*
Viewed:2 hours ago
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Return:02/04/20
29
from
$879*
Viewed:2 hours ago
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Return:02/12/20
30
from
$829*
Viewed:2 hours ago
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Return:02/06/20
31
from
$829*
Viewed:2 hours ago
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Return:02/07/20
from
$829*
Viewed:2 hours ago
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Return:02/15/20
Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Looking for additional flights from Ontario to London?

FromToDatesFare TypePrice

Ontario (ONT)

London (LHR)

Depart: 03/02/20

Return: 03/16/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 02/28/20

Return: 03/13/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 03/04/20

Return: 03/18/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 03/09/20

Return: 03/23/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 02/27/20

Return: 03/12/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 03/10/20

Return: 03/24/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 02/24/20

Return: 03/09/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 02/26/20

Return: 03/11/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 02/25/20

Return: 03/10/20

Roundtrip
from
$381*
Viewed:1hourago

Ontario (ONT)

London (LHR)

Depart: 03/03/20

Return: 03/17/20

Roundtrip
from
$381*
Viewed:1hourago

*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in London

Friday overcast clouds
44°F 01/24/20
Saturday broken clouds
45°F 01/25/20
Sunday moderate rain
47°F 01/26/20
Monday moderate rain
47°F 01/27/20
Tuesday light snow
44°F 01/28/20
Wednesday scattered clouds
43°F 01/29/20
Thursday broken clouds
43°F 01/30/20
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