AirHint found the following cheapest one-way flights from San Francisco (SFO) to San Juan (SJU) in January 2026 (see full year).
One-Way flights
| 26 Jan | Delta | ||
| 27 Jan | Delta | ||
| 28 Jan | Frontier Airlines |
Also check the deals for return flights from San Francisco to San Juan in January.
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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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