AirHint found the following cheapest return flights from Toronto (YYZ) to London (LTN) in August 2025 (see full year).

Return flights

31 Aug - 06 Sep	WestJet
31 Aug - 15 Sep	WestJet
31 Aug - 10 Sep	WestJet
30 Aug - 05 Sep	WestJet
23 Aug - 31 Aug	WestJet
30 Aug - 06 Sep	WestJet
28 Aug - 07 Sep	WestJet
18 Aug - 06 Sep	WestJet
29 Aug - 10 Sep	WestJet
29 Aug - 13 Sep	WestJet
27 Aug - 13 Sep	WestJet
20 Aug - 25 Aug	Porter Airlines (Canada) Ltd
21 Aug - 28 Aug	WestJet
04 Aug - 12 Aug	Porter Airlines (Canada) Ltd
19 Aug - 29 Aug	WestJet
06 Aug - 13 Aug	Porter Airlines (Canada) Ltd
21 Aug - 26 Aug	WestJet
19 Aug - 28 Aug	WestJet
18 Aug - 28 Aug	WestJet
06 Aug - 28 Aug	WestJet

Also check the deals for one-way flights from Toronto to London in August.

The deals are updated regularly. The prices may go up as tickets are purchased by other travellers. Only the cheapest flights are offered. Select a price to book and secure these cheap prices.

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Cheapest return flights from Toronto to London in August from 359€

Return flights