AirHint found the following cheapest return flights from Islamabad (ISB) to Bucharest (OTP) in December 2025 (see full year).
Return flights
| 26 Dec - 01 Jan | flydubai | ||
| 20 Dec - 24 Dec | flydubai | ||
| 02 Dec - 02 Jan | Fly Jinnah | ||
| 16 Dec - 20 Dec | flydubai |
Also check the deals for one-way flights from Islamabad to Bucharest in December.
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