Cheapest return flights from Boston to Istanbul in May from $601

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

Return flights

06 May - 13 May Scandinavian Airlines
07 May - 21 May Scandinavian Airlines
15 May - 06 Jun Aer Lingus
06 May - 30 May Aer Lingus
20 May - 06 Jun Aer Lingus
06 May - 20 May Scandinavian Airlines
10 May - 24 May Aer Lingus
06 May - 30 May Turkish Airlines direct
07 May - 21 May Turkish Airlines direct
06 May - 13 May Turkish Airlines direct
06 May - 20 May Turkish Airlines direct
10 May - 24 May Turkish Airlines direct
20 May - 06 Jun Turkish Airlines direct
15 May - 06 Jun Turkish Airlines direct

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

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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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