Cheapest return flights from Boston to Sofia in April from 404€

AirHint found the following cheapest return flights from Boston (BOS) to Sofia (SOF) in April 2026 (see full year).

Return flights

12 Apr - 26 Apr Lufthansa
15 Apr - 29 Apr KLM

Also check the deals for one-way flights from Boston to Sofia in April.

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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.

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