Cheapest return flights from San Francisco to Sofia in October from $524

AirHint found the following cheapest return flights from San Francisco (SFO) to Sofia (SOF) in October 2025 (see full year).

Return flights

07 Oct - 11 Nov SWISS
26 Oct - 09 Nov Air Canada
23 Oct - 06 Nov SWISS
18 Oct - 08 Nov Air Canada
16 Oct - 23 Oct Turkish Airlines
02 Oct - 08 Oct Frontier Airlines
04 Oct - 18 Oct Turkish Airlines
01 Oct - 08 Oct British Airways

Also check the deals for one-way flights from San Francisco to Sofia in October.

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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