Cheapest return flights from Boston to Sofia in May from $557
AirHint found the following cheapest return flights from Boston (BOS) to Sofia (SOF) in May 2025 (see full year).
Return flights
| 02 May - 17 May | Fly Play | ||
| 27 May - 10 Jun | Fly Play | ||
| 21 May - 28 May | Vueling Airlines | ||
| 10 May - 08 Jun | Frontier Airlines | ||
| 24 May - 07 Jun | Fly Play | ||
| 23 May - 08 Jun | Air Serbia |
Also check the deals for one-way flights from Boston to Sofia in May.
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.
