Cheapest return flights from San Francisco to Istanbul in September from 542€

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

Return flights

22 Sep - 29 Sep Hawaiian Airlines
03 Sep - 17 Sep Hawaiian Airlines
29 Sep - 14 Oct Hawaiian Airlines
09 Sep - 23 Sep Hawaiian Airlines
11 Sep - 18 Sep Hawaiian Airlines
03 Sep - 10 Sep Hawaiian Airlines
08 Sep - 12 Sep Hawaiian Airlines
19 Sep - 01 Oct Frontier Airlines
04 Sep - 08 Sep Hawaiian Airlines
20 Sep - 30 Sep Frontier Airlines
08 Sep - 15 Sep SWISS
29 Sep - 13 Oct SWISS
19 Sep - 05 Oct Frontier Airlines
08 Sep - 22 Sep Hawaiian Airlines
26 Sep - 06 Oct Frontier Airlines
19 Sep - 01 Oct Turkish Airlines direct
30 Sep - 15 Oct Turkish Airlines direct
26 Sep - 06 Oct 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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