AirHint found the following cheapest return flights from St. John's (YYT) to Amsterdam (AMS) in September 2025 (see full year).

Return flights

30 Sep - 01 Oct	WestJet
17 Sep - 01 Oct	WestJet
09 Sep - 06 Oct	WestJet
10 Sep - 01 Oct	WestJet
19 Sep - 13 Oct	WestJet
16 Sep - 08 Oct	WestJet
24 Sep - 15 Oct	WestJet
17 Sep - 08 Oct	WestJet
26 Sep - 15 Oct	WestJet
07 Sep - 01 Oct	Porter Airlines (Canada) Ltd
02 Sep - 16 Sep	WestJet
09 Sep - 30 Sep	WestJet
09 Sep - 23 Sep	WestJet
16 Sep - 30 Sep	WestJet
02 Sep - 14 Sep	WestJet
03 Sep - 09 Sep	WestJet
02 Sep - 08 Sep	WestJet
17 Sep - 27 Sep	WestJet
12 Sep - 18 Sep	WestJet
23 Sep - 28 Sep	WestJet

Also check the deals for one-way flights from St. John's to Amsterdam 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 St. John's to Amsterdam in September from $431

Return flights