AirHint found the following cheapest return flights from San Francisco (SFO) to Istanbul (IST) in May 2026 (see full year).

Return flights

13 May - 27 May	Air France
12 May - 16 May	Air France
13 May - 06 Jun	Air France
06 May - 13 May	Air France
19 May - 13 Jun	Air France
15 May - 06 Jun	Air France
06 May - 13 May	Turkish Airlines	direct
13 May - 27 May	Turkish Airlines	direct
13 May - 06 Jun	Turkish Airlines	direct
19 May - 13 Jun	Turkish Airlines	direct
15 May - 06 Jun	Turkish Airlines	direct

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

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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Cheapest return flights from San Francisco to Istanbul in May from $842

Return flights