Cheapest return flights from Boston to Ljubljana in May from $715

AirHint found the following cheapest return flights from Boston (BOS) to Ljubljana (LJU) in May 2026 (see full year).

Return flights

22 May - 31 May Brussels Airlines
21 May - 31 May Lufthansa

Also check the deals for one-way flights from Boston to Ljubljana in May.

Skyscanner

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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