AirHint found the following cheapest return flights from St. Louis (STL) to Bucharest (OTP) in November 2025 (see full year).
Return flights
| 02 Nov - 10 Nov | Spirit Airlines | ||
| 06 Nov - 15 Nov | Delta | ||
| 30 Nov - 20 Dec | Frontier Airlines |
Also check the deals for one-way flights from St. Louis to Bucharest in November.
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