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

Return flights

04 May - 05 May	WestJet
05 May - 27 May	WestJet
04 May - 26 May	WestJet
04 May - 27 May	WestJet
28 May - 01 Jun	WestJet
26 May - 27 May	WestJet
23 May - 26 May	WestJet
26 May - 17 Jun	WestJet
21 May - 24 May	WestJet
01 May - 16 Jun	WestJet
25 May - 16 Jun	WestJet
26 May - 16 Jun	WestJet

Also check the deals for one-way flights from Houston to Waterloo 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 Houston to Waterloo in May from $355

Return flights