Flights from Porto to San Francisco from € 635*
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1 Passenger, Economy
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Featured daily fares for flights from Porto (OPO) to San Francisco (SFO)
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More United deals on Porto (OPO) to San Francisco (SFO) flights
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€
From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 04/03/2026 - 08/03/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 05/03/2026 - 09/03/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 07/02/2026 - 21/02/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 12/02/2026 - 26/02/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 13/02/2026 - 27/02/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 18/02/2026 - 04/03/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 17/02/2026 - 24/02/2026 | from € 635 Viewed: 9 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 20/02/2026 - 27/02/2026 | from € 635 Viewed: 9 hours ago |
*Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.