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

Return flights

08 Sep - 23 Sep	SWISS
24 Sep - 06 Oct	Condor
16 Sep - 30 Sep	Condor
17 Sep - 01 Oct	Condor
14 Sep - 28 Sep	Condor
08 Sep - 15 Sep	Condor
10 Sep - 28 Sep	Hawaiian Airlines
03 Sep - 10 Sep	United
17 Sep - 24 Sep	United
24 Sep - 01 Oct	United
30 Sep - 07 Oct	United
01 Sep - 08 Sep	United
11 Sep - 18 Sep	United
05 Sep - 12 Sep	United
10 Sep - 05 Oct	Air Canada
27 Sep - 04 Oct	United

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

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 Vienna

Cheap car rent in Vienna

Cheapest return flights from San Francisco to Vienna in September from 347€

Return flights