AirHint found the following cheapest return flights from Lisbon (LIS) to Sofia (SOF) in April 2026 (see full year).
Return flights
| 08 Apr - 12 Apr | Vueling Airlines | ||
| 29 Apr - 03 May | Vueling Airlines | ||
| 22 Apr - 06 May | SKY express | ||
| 12 Apr - 15 Apr | SKY express |
Also check the deals for one-way flights from Lisbon to Sofia in April.
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