Flights from Porto (OPO) starting at € 558*
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1 Passenger, Economy
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today
today
Fly from Porto and get United's best fares
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Porto (OPO)to
Newark/New York (EWR)10/09/2026 - 14/09/2026from€ 558Viewed: 13 hours agoRoundtripEconomy
Porto (OPO)to
Chicago (ORD)26/08/2026 - 30/08/2026from€ 775Viewed: 3 hours agoRoundtripEconomy
Porto (OPO)to
Los Angeles (LAX)01/09/2026 - 08/09/2026from€ 845Viewed: 3 hours agoRoundtripEconomy
Porto (OPO)to
San Francisco (SFO)28/08/2026 - 11/09/2026from€ 727Viewed: 3 hours agoRoundtripEconomy
Porto (OPO)to
Houston (IAH)26/08/2026 - 30/08/2026from€ 815Viewed: 4 hours agoRoundtripEconomy
Porto (OPO)to
Denver (DEN)29/08/2026 - 12/09/2026from€ 845Viewed: 10 hours agoRoundtripEconomy
Porto (OPO)to
Washington, D.C. (IAD)31/08/2026 - 07/09/2026from€ 595Viewed: 3 hours agoRoundtripEconomy
Porto (OPO)to
Boston (BOS)28/08/2026 - 01/09/2026from€ 645Viewed: 4 hours agoRoundtripEconomy
Porto (OPO)to
Seattle (SEA)28/08/2026 - 01/09/2026from€ 849Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Spokane (GEG)26/08/2026 - 09/09/2026from€ 949Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Jackson (JAC)31/08/2026 - 14/09/2026from€ 829Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Vail (EGE)10/09/2026 - 14/09/2026from€ 844Viewed: 10 hours agoRoundtripEconomy
Porto (OPO)to
Billings (BIL)25/08/2026 - 01/09/2026from€ 949Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Boise (BOI)10/09/2026 - 17/09/2026from€ 949Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Eugene (EUG)27/08/2026 - 31/08/2026from€ 949Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Steamboat Springs (HDN)27/08/2026 - 10/09/2026from€ 829Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Helena (HLN)10/09/2026 - 24/09/2026from€ 949Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Portland, OR (PDX)10/09/2026 - 17/09/2026from€ 849Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Sun Valley (SUN)31/08/2026 - 14/09/2026from€ 949Viewed: 11 hours agoRoundtripEconomy
Porto (OPO)to
Aspen (ASE)31/08/2026 - 14/09/2026from€ 829Viewed: 10 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 | 10/09/2026 - 14/09/2026 | from € 558 Viewed: 13 hours ago |
| Porto (OPO) | Chicago (ORD) | Roundtrip | Economy | 26/08/2026 - 30/08/2026 | from € 775 Viewed: 3 hours ago |
| Porto (OPO) | Los Angeles (LAX) | Roundtrip | Economy | 01/09/2026 - 08/09/2026 | from € 845 Viewed: 3 hours ago |
| Porto (OPO) | San Francisco (SFO) | Roundtrip | Economy | 28/08/2026 - 11/09/2026 | from € 727 Viewed: 3 hours ago |
| Porto (OPO) | Houston (IAH) | Roundtrip | Economy | 26/08/2026 - 30/08/2026 | from € 815 Viewed: 4 hours ago |
| Porto (OPO) | Denver (DEN) | Roundtrip | Economy | 29/08/2026 - 12/09/2026 | from € 845 Viewed: 10 hours ago |
| Porto (OPO) | Washington, D.C. (IAD) | Roundtrip | Economy | 31/08/2026 - 07/09/2026 | from € 595 Viewed: 3 hours ago |
| Porto (OPO) | Boston (BOS) | Roundtrip | Economy | 28/08/2026 - 01/09/2026 | from € 645 Viewed: 4 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.