Cheapest return flights from San Francisco to Bucharest in December from $619

Best time to book flights for San Francisco (SFO) to Bucharest (OTP) flights at AirHint

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

Return flights

10 Dec - 17 Dec United
20 Dec - 28 Dec Lufthansa

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

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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