AirHint found the following cheapest return flights from Amsterdam (AMS) to Knokke (KNO) in September 2025 (see full year).

Return flights

08 Sep - 16 Sep	China Southern
17 Sep - 01 Oct	IndiGo
05 Sep - 26 Sep	Air India
08 Sep - 24 Sep	IndiGo
08 Sep - 08 Oct	IndiGo
07 Sep - 23 Sep	Air India
14 Sep - 28 Sep	Oman Air
12 Sep - 02 Oct	IndiGo
24 Sep - 01 Oct	IndiGo
22 Sep - 15 Oct	IndiGo
24 Sep - 04 Oct	IndiGo
07 Sep - 26 Sep	China Southern
22 Sep - 17 Oct	IndiGo
12 Sep - 20 Sep	IndiGo
21 Sep - 13 Oct	Air India
18 Sep - 27 Sep	Etihad Airways

Also check the deals for one-way flights from Amsterdam to Knokke 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 Amsterdam to Knokke in September from $786

Return flights