AirHint found the following cheapest one-way flights from Newark (EWR) to Sofia (SOF) in December 2025 (see full year).
One-Way flights
| 07 Dec | TAP | ||
| 09 Dec | Icelandair | ||
| 12 Dec | SWISS | ||
| 13 Dec | Spirit Airlines | ||
| 29 Dec | Lufthansa | ||
| 14 Dec | FrenchBee | ||
| 17 Dec | FrenchBee |
Also check the deals for return flights from Newark to Sofia in December.
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