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

14 Sep - 23 Sep Delta
18 Sep - 25 Sep TAP
01 Sep - 15 Sep British Airways
04 Sep - 18 Sep Delta
01 Sep - 13 Sep Delta
04 Sep - 18 Sep Turkish Airlines direct
18 Sep - 25 Sep Turkish Airlines direct
09 Sep - 13 Sep Scandinavian Airlines
14 Sep - 23 Sep Turkish Airlines direct
01 Sep - 15 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.

Book a cheap hotel in Istanbul

Cheap car rent in Istanbul