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

Return flights

10 Jun - 24 Jun	KLM
01 Jun - 15 Jun	KLM
11 Jun - 28 Jun	KLM
04 Jun - 18 Jun	Air France
02 Jun - 16 Jun	KLM
15 Jun - 01 Jul	Lufthansa
21 Jun - 28 Jun	Air France
01 Jun - 11 Jun	Aer Lingus
17 Jun - 11 Jul	Icelandair
18 Jun - 11 Jul	Icelandair
19 Jun - 12 Jul	Lufthansa
04 Jun - 18 Jun	Turkish Airlines	direct
01 Jun - 11 Jun	Turkish Airlines	direct
01 Jun - 15 Jun	Turkish Airlines	direct

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

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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul

Cheapest return flights from Boston to Istanbul in June from 624€

Return flights