Flights from San Francisco to Porto from $ 940*
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1 Passenger, Economy
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today
today
Featured daily fares for flights from San Francisco (SFO) to Porto (OPO)
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More United deals on San Francisco (SFO) to Porto (OPO) flights
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 09/01/26 - 09/17/26 | from $ 940 Viewed: 7 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 05/05/26 - 05/12/26 | from $ 947 Viewed: 8 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 09/01/26 - 09/18/26 | from $ 947 Viewed: 7 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 04/30/26 - 05/07/26 | from $ 958 Viewed: 8 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 04/30/26 - 05/14/26 | from $ 997 Viewed: 8 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 05/05/26 - 05/19/26 | from $ 998 Viewed: 8 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 04/21/26 - 04/28/26 | from $ 1,026 Viewed: 8 hours ago |
| San Francisco (SFO) | Porto (OPO) | Roundtrip | Economy | 04/22/26 - 04/29/26 | from $ 1,026 Viewed: 8 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.
