Cheapest return flights from Boston to Istanbul in May from 623€

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

Return flights

31 May - 30 Jun Air France
13 May - 26 May KLM
19 May - 10 Jun Air France
16 May - 09 Jun KLM
16 May - 09 Jun Turkish Airlines direct
13 May - 26 May Turkish Airlines direct
19 May - 10 Jun Turkish Airlines direct
31 May - 30 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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