Cheapest return flights from Boston to Istanbul in May from 534€

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

Return flights

02 May - 09 May Delta
02 May - 07 May LEVEL
29 May - 06 Jun KLM
18 May - 01 Jun KLM
02 May - 07 May Turkish Airlines direct
08 May - 08 Jun Air France
21 May - 04 Jun Air France
21 May - 04 Jun Turkish Airlines direct
18 May - 01 Jun Turkish Airlines direct
08 May - 08 Jun Turkish Airlines direct
02 May - 09 May Turkish Airlines direct

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

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