AirHint found the following cheapest return flights from Boston (BOS) to Bucharest (BBU) in September 2026 (see full year).
Return flights
| 29 Sep - 06 Oct | Air France | ||
| 30 Sep - 07 Oct | KLM | ||
| 22 Sep - 29 Sep | Icelandair | ||
| 08 Sep - 15 Sep | Icelandair | ||
| 01 Sep - 08 Sep | Icelandair | ||
| 07 Sep - 14 Sep | SWISS | ||
| 06 Sep - 13 Sep | Icelandair |
Also check the deals for one-way flights from Boston to Bucharest in September.
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