AirHint found the following cheapest return flights from Keflavik (KEF) to Bucharest (OTP) in July 2025 (see full year).

Return flights

25 Jul - 02 Aug	Wizz Air Malta
15 Jul - 22 Jul	Wizz Air Malta
24 Jul - 02 Aug	Wizz Air Malta
24 Jul - 01 Aug	Wizz Air Malta
04 Jul - 10 Jul	Eurowings
13 Jul - 17 Jul	Wizz Air Malta
23 Jul - 03 Aug	Transavia France
10 Jul - 17 Jul	Wizz Air Malta
10 Jul - 20 Jul	Wizz Air Malta
11 Jul - 17 Jul	Eurowings
10 Jul - 17 Aug	Wizz Air Malta
11 Jul - 20 Jul	Eurowings
12 Jul - 17 Jul	Wizz Air
01 Jul - 01 Jul	Icelandair

Also check the deals for one-way flights from Keflavik to Bucharest 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 Keflavik to Bucharest in July from $285

Return flights