AirHint found the following cheapest return flights from Waterloo (YKF) to Athens (ATH) in August 2025 (see full year).

Return flights

25 Aug - 09 Sep	WestJet
28 Aug - 06 Sep	WestJet
20 Aug - 27 Aug	WestJet
25 Aug - 29 Aug	WestJet
11 Aug - 28 Aug	WestJet
18 Aug - 28 Aug	WestJet
28 Aug - 07 Sep	WestJet
29 Aug - 06 Sep	WestJet
22 Aug - 14 Sep	WestJet
13 Aug - 27 Aug	WestJet
12 Aug - 21 Aug	WestJet
29 Aug - 18 Sep	WestJet
10 Aug - 27 Aug	WestJet
04 Aug - 12 Aug	WestJet
06 Aug - 18 Sep	WestJet
04 Aug - 16 Aug	WestJet
05 Aug - 16 Aug	WestJet
24 Aug - 16 Sep	WestJet

Also check the deals for one-way flights from Waterloo to Athens 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 Waterloo to Athens in August from $1426

Return flights