Cheapest return flights from Boston to Istanbul in December from 447€

AirHint found the following cheapest return flights from Boston (BOS) to Istanbul (IST) in December 2025 (see full year).

Return flights

02 Dec - 09 Dec KLM
01 Dec - 08 Dec British Airways
30 Dec - 21 Jan British Airways
04 Dec - 11 Dec TAP
25 Dec - 08 Jan British Airways
15 Dec - 21 Dec KLM
30 Dec - 21 Jan Turkish Airlines direct
01 Dec - 08 Dec Turkish Airlines direct
22 Dec - 05 Jan KLM
18 Dec - 02 Jan KLM
15 Dec - 21 Dec Turkish Airlines direct
23 Dec - 03 Jan British Airways
25 Dec - 08 Jan Turkish Airlines direct
18 Dec - 02 Jan Turkish Airlines direct
22 Dec - 05 Jan Turkish Airlines direct
23 Dec - 03 Jan Turkish Airlines direct

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

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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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