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

Return flights

24 May - 01 Jun	WestJet
26 May - 09 Jun	WestJet
22 May - 09 Jun	WestJet
08 May - 18 May	WestJet
12 May - 17 Jun	WestJet
07 May - 14 May	WestJet
05 May - 12 May	WestJet
04 May - 11 May	WestJet
09 May - 18 May	WestJet
12 May - 18 May	WestJet
18 May - 29 May	WestJet
17 May - 06 Jun	WestJet
20 May - 13 Jun	WestJet
03 May - 10 May	WestJet
02 May - 14 May	WestJet
20 May - 05 Jun	WestJet
15 May - 24 May	WestJet
30 May - 20 Jun	WestJet
31 May - 20 Jun	WestJet

Also check the deals for one-way flights from Waterloo to London 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 London in May from 789€

Return flights