AirHint found the following cheapest one-way flights from San Francisco (SFO) to Barcelona (BCN) in September 2026 (see full year).
One-Way flights
| 24 Sep | LEVEL | direct | |
| 17 Sep | LEVEL | direct | |
| 19 Sep | LEVEL | direct | |
| 20 Sep | LEVEL | direct | |
| 13 Sep | LEVEL | direct | |
| 15 Sep | LEVEL | direct | |
| 07 Sep | Air Canada | ||
| 02 Sep | Brussels Airlines | ||
| 03 Sep | TAP | ||
| 25 Sep | Alaska Airlines |
Also check the deals for return flights from San Francisco to Barcelona 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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