AirHint found the following cheapest return flights from Santander (SDR) to Bucharest (OTP) in August 2025 (see full year).

Return flights

25 Aug - 03 Sep	Ryanair
26 Aug - 03 Sep	Ryanair
27 Aug - 03 Sep	Ryanair
25 Aug - 01 Sep	Ryanair
25 Aug - 02 Sep	Ryanair
24 Aug - 03 Sep	Vueling Airlines
07 Aug - 10 Aug	Ryanair
23 Aug - 03 Sep	Iberia
28 Aug - 04 Sep	Iberia
23 Aug - 01 Sep	Iberia
09 Aug - 17 Aug	Ryanair
11 Aug - 23 Aug	Ryanair
23 Aug - 02 Sep	Iberia
05 Aug - 12 Aug	Vueling Airlines
20 Aug - 30 Aug	Ryanair
15 Aug - 18 Aug	Vueling Airlines
21 Aug - 24 Aug	Vueling Airlines
09 Aug - 24 Aug	Ryanair
22 Aug - 24 Aug	Iberia

Also check the deals for one-way flights from Santander to Bucharest in August.

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 Santander to Bucharest in August from $206

Return flights