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

Return flights

03 Sep - 09 Sep	Porter Airlines (Canada) Ltd
14 Sep - 01 Oct	WestJet
21 Sep - 15 Oct	WestJet
09 Sep - 23 Sep	WestJet
21 Sep - 12 Oct	WestJet
21 Sep - 11 Oct	WestJet
01 Sep - 27 Sep	WestJet
06 Sep - 18 Oct	WestJet
15 Sep - 22 Sep	WestJet
06 Sep - 23 Sep	WestJet
06 Sep - 22 Sep	WestJet
06 Sep - 13 Sep	WestJet
06 Sep - 20 Sep	WestJet
07 Sep - 23 Sep	WestJet
06 Sep - 16 Sep	WestJet

Also check the deals for one-way flights from Hamilton to Bucharest 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.

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Cheapest return flights from Hamilton to Bucharest in September from 936€

Return flights