AirHint found the following cheapest return flights from Waterloo (YKF) to Lisbon (LIS) in May 2026 (see full year).

Return flights

04 May - 28 May	WestJet
03 May - 12 May	WestJet
03 May - 28 May	WestJet
03 May - 23 May	WestJet
01 May - 08 May	WestJet
05 May - 12 May	WestJet
06 May - 21 May	WestJet
13 May - 20 May	WestJet
04 May - 11 May	WestJet
04 May - 30 May	WestJet
19 May - 13 Jun	WestJet
31 May - 08 Jun	WestJet
14 May - 06 Jun	WestJet
13 May - 06 Jun	WestJet

Also check the deals for one-way flights from Waterloo to Lisbon in May.

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 Lisbon in May from 1115€

Return flights