AirHint found the following cheapest return flights from Rotterdam (RTM) to Valencia (VLC) in September 2025 (see full year).

Return flights

08 Sep - 18 Sep	transavia	direct
22 Sep - 25 Sep	transavia	direct
29 Sep - 07 Oct	transavia	direct
15 Sep - 18 Sep	transavia	direct
15 Sep - 30 Sep	transavia	direct
29 Sep - 03 Oct	transavia	direct
30 Sep - 03 Oct	transavia	direct
14 Sep - 22 Sep	transavia
14 Sep - 19 Sep	transavia	direct
05 Sep - 11 Sep	transavia
05 Sep - 10 Sep	transavia
22 Sep - 29 Sep	transavia
06 Sep - 11 Sep	transavia
30 Sep - 04 Oct	transavia

Also check the deals for one-way flights from Rotterdam to Valencia 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 Rotterdam to Valencia in September from $147

Return flights