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

Return flights

29 Sep - 06 Oct	transavia	direct
27 Sep - 04 Oct	transavia
23 Sep - 27 Sep	transavia
21 Sep - 25 Sep	transavia	direct
16 Sep - 22 Sep	transavia	direct
20 Sep - 25 Sep	transavia
15 Sep - 25 Sep	transavia
20 Sep - 25 Sep	transavia	direct
22 Sep - 27 Sep	transavia
20 Sep - 27 Sep	transavia
13 Sep - 20 Sep	transavia	direct
18 Sep - 25 Sep	transavia
27 Sep - 04 Oct	transavia	direct
26 Sep - 02 Oct	transavia
26 Sep - 02 Oct	transavia	direct
30 Sep - 07 Oct	transavia

Also check the deals for one-way flights from Rotterdam to Gerona 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.

Book a cheap hotel in Gerona

Cheap car rent in Gerona

Cheapest return flights from Rotterdam to Gerona in September from $184

Return flights