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

Return flights

01 Sep - 11 Sep	WestJet
29 Sep - 08 Oct	WestJet
03 Sep - 09 Sep	WestJet
03 Sep - 10 Sep	WestJet
03 Sep - 11 Sep	WestJet
02 Sep - 09 Sep	WestJet
01 Sep - 08 Sep	WestJet
20 Sep - 24 Sep	WestJet
28 Sep - 07 Oct	WestJet
10 Sep - 17 Sep	WestJet
18 Sep - 23 Sep	WestJet
01 Sep - 01 Oct	WestJet
26 Sep - 30 Sep	WestJet
30 Sep - 17 Oct	WestJet
24 Sep - 19 Oct	WestJet
27 Sep - 09 Oct	WestJet
26 Sep - 01 Oct	WestJet
29 Sep - 04 Oct	WestJet
26 Sep - 04 Oct	WestJet
22 Sep - 04 Oct	WestJet

Also check the deals for one-way flights from Hamilton to Lisbon in September.

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.

Book a cheap hotel in Lisbon

Cheap car rent in Lisbon

Cheapest return flights from Hamilton to Lisbon in September from $1461

Return flights