Flights from Porto (OPO) starting at € 556*
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1 Passenger, Economy
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Fly from Porto and get United's best fares
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Porto (OPO)to
Newark/New York (EWR)16/05/2026 - 30/05/2026from€ 556Viewed: 14 minutes agoRoundtripEconomy
Porto (OPO)to
San Francisco (SFO)13/05/2026 - 27/05/2026from€ 725Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Houston (IAH)27/05/2026 - 31/05/2026from€ 813Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Boston (BOS)22/05/2026 - 29/05/2026from€ 643Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Chicago (ORD)03/06/2026 - 07/06/2026from€ 773Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Washington, D.C. (IAD)21/05/2026 - 04/06/2026from€ 593Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Denver (DEN)03/06/2026 - 07/06/2026from€ 843Viewed: 21 hours agoRoundtripEconomy
Porto (OPO)to
Los Angeles (LAX)17/06/2026 - 21/06/2026from€ 843Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Portland, OR (PDX)14/05/2026 - 28/05/2026from€ 848Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Boise (BOI)28/05/2026 - 04/06/2026from€ 963Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Vail (EGE)14/05/2026 - 28/05/2026from€ 828Viewed: 21 hours agoRoundtripEconomy
Porto (OPO)to
Great Falls (GTF)21/05/2026 - 04/06/2026from€ 948Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Seattle (SEA)03/06/2026 - 10/06/2026from€ 848Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Eugene (EUG)20/05/2026 - 03/06/2026from€ 948Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Kalispell (FCA)21/05/2026 - 04/06/2026from€ 948Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Steamboat Springs (HDN)13/05/2026 - 27/05/2026from€ 828Viewed: 21 hours agoRoundtripEconomyPorto (OPO)to
Newark/New York (LGA)27/05/2026 - 03/06/2026from€ 564Viewed: 15 hours agoRoundtripEconomy
Porto (OPO)to
Missoula (MSO)21/05/2026 - 28/05/2026from€ 948Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Sun Valley (SUN)20/05/2026 - 03/06/2026from€ 948Viewed: 22 hours agoRoundtripEconomy
Porto (OPO)to
Aspen (ASE)21/05/2026 - 28/05/2026from€ 828Viewed: 21 hours agoRoundtripEconomy
*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.
United popular flights from Porto (OPO)
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From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| Porto (OPO) | Newark/New York (EWR) | Roundtrip | Economy | 16/05/2026 - 30/05/2026 | from € 556 Viewed: 14 minutes ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 13/05/2026 - 27/05/2026 | from € 725 Viewed: 15 hours ago |
| Porto (OPO) | Houston (IAH) | Roundtrip | Economy | 27/05/2026 - 31/05/2026 | from € 813 Viewed: 15 hours ago |
| Porto (OPO) | Boston (BOS) | Roundtrip | Economy | 22/05/2026 - 29/05/2026 | from € 643 Viewed: 15 hours ago |
| Porto (OPO) | Chicago (ORD) | Roundtrip | Economy | 03/06/2026 - 07/06/2026 | from € 773 Viewed: 15 hours ago |
| Porto (OPO) | Washington, D.C. (IAD) | Roundtrip | Economy | 21/05/2026 - 04/06/2026 | from € 593 Viewed: 15 hours ago |
| Porto (OPO) | Denver (DEN) | Roundtrip | Economy | 03/06/2026 - 07/06/2026 | from € 843 Viewed: 21 hours ago |
| Porto (OPO) | Los Angeles (LAX) | Roundtrip | Economy | 17/06/2026 - 21/06/2026 | from € 843 Viewed: 15 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.