AirHint found the following cheapest return flights from Hamilton (YHM) to Lisbon (LIS) in August 2025 (see full year).

Return flights

26 Aug - 09 Sep	WestJet
19 Aug - 02 Sep	WestJet
27 Aug - 02 Sep	WestJet
23 Aug - 06 Sep	WestJet
22 Aug - 06 Sep	WestJet
22 Aug - 02 Sep	WestJet
28 Aug - 13 Sep	WestJet
24 Aug - 04 Sep	WestJet
20 Aug - 02 Sep	WestJet
18 Aug - 02 Sep	WestJet
06 Aug - 13 Aug	WestJet
07 Aug - 13 Aug	WestJet
05 Aug - 16 Aug	WestJet
05 Aug - 12 Aug	WestJet

Also check the deals for one-way flights from Hamilton to Lisbon 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 Hamilton to Lisbon in August from $1255

Return flights