Cheapest return flights from San Francisco to Istanbul in September from $589

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

Return flights

04 Sep - 17 Sep Hawaiian Airlines
07 Sep - 20 Sep Hawaiian Airlines
17 Sep - 24 Sep Hawaiian Airlines
02 Sep - 10 Sep Hawaiian Airlines
06 Sep - 09 Sep Frontier Airlines
04 Sep - 27 Sep Hawaiian Airlines
29 Sep - 13 Oct Hawaiian Airlines
10 Sep - 20 Sep Hawaiian Airlines
02 Sep - 05 Sep Hawaiian Airlines
11 Sep - 18 Sep Hawaiian Airlines
02 Sep - 09 Sep Hawaiian Airlines
30 Sep - 24 Oct Hawaiian Airlines
29 Sep - 02 Oct Hawaiian Airlines
26 Sep - 10 Oct Hawaiian Airlines
20 Sep - 04 Oct Frontier Airlines
15 Sep - 01 Oct Hawaiian Airlines
28 Sep - 13 Oct Air Canada
21 Sep - 06 Oct KLM
18 Sep - 02 Oct SWISS
19 Sep - 04 Oct Air France

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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