Cheapest return flights from San Francisco to Bucharest in September from $647

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

Return flights

03 Sep - 30 Sep Turkish Airlines
25 Sep - 02 Oct Air Canada
09 Sep - 16 Sep Hawaiian Airlines
08 Sep - 15 Sep Hawaiian Airlines
03 Sep - 10 Sep Lufthansa
10 Sep - 17 Sep United
17 Sep - 24 Sep TAP
01 Sep - 08 Sep Lufthansa
14 Sep - 21 Sep SWISS
15 Sep - 22 Sep Hawaiian Airlines
23 Sep - 30 Sep Hawaiian Airlines
30 Sep - 07 Oct Hawaiian Airlines
24 Sep - 01 Oct Alaska Airlines
27 Sep - 04 Oct Frontier Airlines
29 Sep - 06 Oct Hawaiian Airlines
26 Sep - 03 Oct Turkish Airlines
28 Sep - 05 Oct Frontier Airlines

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

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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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