AirHint found the following cheapest return flights from Sofia (SOF) to Hanoi (HAN) in April 2026 (see full year).
Return flights
| 10 Apr - 20 May | Pegasus Airlines | ||
| 02 Apr - 17 Apr | Pegasus Airlines | ||
| 04 Apr - 12 Apr | IndiGo |
Also check the deals for one-way flights from Sofia to Hanoi in April.
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