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

Return flights

21 Sep - 25 Sep	transavia	direct
28 Sep - 30 Sep	transavia	direct
16 Sep - 23 Sep	transavia	direct
23 Sep - 30 Sep	transavia	direct
14 Sep - 18 Sep	transavia	direct
18 Sep - 25 Sep	transavia	direct
14 Sep - 19 Sep	transavia	direct
07 Sep - 11 Sep	transavia	direct
18 Sep - 23 Sep	transavia	direct
09 Sep - 11 Sep	transavia	direct
30 Sep - 09 Oct	transavia	direct
14 Sep - 05 Oct	transavia
30 Sep - 03 Oct	transavia
24 Sep - 01 Oct	transavia
30 Sep - 03 Oct	transavia	direct
28 Sep - 05 Oct	transavia	direct

Also check the deals for one-way flights from Rotterdam to Rome 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 Rome in September from 131€

Return flights