Cheapest return flights from San Francisco to Istanbul in September from $915

Best time to book flights for San Francisco (SFO) to Istanbul (IST) flights at AirHint

AirHint found the following cheapest return flights from San Francisco (SFO) to Istanbul (IST) in September 2025 (see full year).

Return flights

16 Sep - 23 Sep Icelandair
02 Sep - 11 Sep Delta
12 Sep - 19 Sep Delta
06 Sep - 20 Sep Delta
07 Sep - 22 Sep Icelandair
01 Sep - 07 Sep Delta
07 Sep - 22 Sep Turkish Airlines direct
12 Sep - 19 Sep Turkish Airlines direct
06 Sep - 20 Sep Turkish Airlines direct
02 Sep - 11 Sep Turkish Airlines direct

Also check the deals for one-way flights from San Francisco to Istanbul in September.

Skyscanner

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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