Cheapest return flights from Ontario (ONT) to London (LHR), October

20 dates in October, from $ 907. Book in one tap, or check whether to buy now or wait.

One-wayReturn
Dates, airline, and price
Dates Airline Price
26 Oct 1 Nov Frontier Airlines
20 Oct 28 Oct Delta
18 Oct 10 Nov Alaska Airlines
18 Oct 11 Nov Alaska Airlines
19 Oct 27 Oct Alaska Airlines
27 Oct 3 Nov Iberia
19 Oct 5 Nov Alaska Airlines
20 Oct 5 Nov Alaska Airlines
18 Oct 5 Nov Alaska Airlines
20 Oct 4 Nov Alaska Airlines
25 Oct 1 Nov Delta
20 Oct 2 Nov Alaska Airlines
22 Oct 30 Oct Alaska Airlines
15 Oct 22 Oct Alaska Airlines
23 Oct 30 Oct Alaska Airlines
18 Oct 25 Oct Alaska Airlines
18 Oct 31 Oct Alaska Airlines
19 Oct 31 Oct Alaska Airlines
22 Oct 29 Oct Alaska Airlines
16 Oct 22 Oct British Airways
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Deals for one-way flights from Ontario to London in October.

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About these fares

These results come from our latest search across airlines for your currency. Prices change quickly and are not locked until you complete booking—always confirm the total and fare rules on the partner site.

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