AirHint found the following cheapest return flights from Rotterdam (RTM) to Helsinki (HEL) in July 2025 (see full year).

Return flights

24 Jul - 27 Jul	transavia
06 Jul - 13 Jul	transavia
14 Jul - 20 Jul	transavia
10 Jul - 13 Jul	transavia
21 Jul - 27 Jul	transavia
03 Jul - 11 Jul	Pegasus Airlines
04 Jul - 11 Jul	TUI fly Belgium
18 Jul - 20 Jul	British Airways

Also check the deals for one-way flights from Rotterdam to Helsinki in July.

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 Helsinki in July from $604

Return flights