United flights to Porto from $ 511*
United's most popular flights to Porto (OPO)
New York/Newark (EWR)to
Porto (OPO)San Francisco (SFO)to
Porto (OPO)Chicago (ORD)to
Porto (OPO)Houston (IAH)to
Porto (OPO)Washington, D.C. (IAD)to
Porto (OPO)Denver (DEN)to
Porto (OPO)Seattle (SEA)to
Porto (OPO)Los Angeles (LAX)to
Porto (OPO)Boston (BOS)to
Porto (OPO)Portland, OR (PDX)to
Porto (OPO)Eugene (EUG)to
Porto (OPO)Bozeman (BZN)to
Porto (OPO)Montrose (MTJ)to
Porto (OPO)Aspen (ASE)to
Porto (OPO)Boise (BOI)to
Porto (OPO)Great Falls (GTF)to
Porto (OPO)Helena (HLN)to
Porto (OPO)Billings (BIL)to
Porto (OPO)Vail (EGE)to
Porto (OPO)Kalispell (FCA)to
Porto (OPO)*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.
Business class deals on flights to Porto (OPO)
New York/Newark (EWR)to
Roundtrip
Business
San Francisco (SFO)to
Roundtrip
Business
Chicago (ORD)to
Roundtrip
Business
Houston (IAH)to
Roundtrip
Business
Washington, D.C. (IAD)to
Roundtrip
Business
Denver (DEN)to
Roundtrip
Business
Los Angeles (LAX)to
Roundtrip
Business
Portland, OR (PDX)to
Roundtrip
Business
Spokane (GEG)to
Roundtrip
Business
New York/Newark (LGA)to
Roundtrip
Business
*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.
Find more flights to Porto (OPO) with United
From | To | Fare Type | Dates | Price |
|---|---|---|---|---|
| FromNew York/Newark (EWR) | ToPorto (OPO) | Roundtrip | Economy | 02/02/25 - 02/10/25 | from $ 765* Viewed: 1 day ago |
| FromSan Francisco (SFO) | ToPorto (OPO) | Roundtrip | Economy | 02/17/25 - 02/24/25 | from $ 668* Viewed: 22 hours ago |
| FromChicago (ORD) | ToPorto (OPO) | Roundtrip | Economy | 02/17/25 - 03/03/25 | from $ 524* Viewed: 22 hours ago |
| FromHouston (IAH) | ToPorto (OPO) | Roundtrip | Economy | 02/18/25 - 03/04/25 | from $ 622* Viewed: 22 hours ago |
| FromWashington, D.C. (IAD) | ToPorto (OPO) | Roundtrip | Economy | 01/27/25 - 02/10/25 | from $ 616* Viewed: 22 hours ago |
| FromDenver (DEN) | ToPorto (OPO) | Roundtrip | Economy | 02/04/25 - 02/18/25 | from $ 622* Viewed: 1 day ago |
| FromSeattle (SEA) | ToPorto (OPO) | Roundtrip | Economy | 01/29/25 - 02/12/25 | from $ 633* Viewed: 1 day ago |
| FromLos Angeles (LAX) | ToPorto (OPO) | Roundtrip | Economy | 02/18/25 - 03/04/25 | from $ 732* Viewed: 22 hours ago |
| FromBoston (BOS) | ToPorto (OPO) | Roundtrip | Economy | 02/05/25 - 02/19/25 | from $ 528* Viewed: 22 hours ago |
| FromPortland, OR (PDX) | ToPorto (OPO) | Roundtrip | Economy | 01/28/25 - 02/11/25 | from $ 633* Viewed: 1 day ago |
| FromEugene (EUG) | ToPorto (OPO) | Roundtrip | Economy | 01/29/25 - 02/12/25 | from $ 835* Viewed: 1 day ago |
| FromBozeman (BZN) | ToPorto (OPO) | Roundtrip | Economy | 01/29/25 - 02/12/25 | from $ 633* Viewed: 1 day ago |
| FromMontrose (MTJ) | ToPorto (OPO) | Roundtrip | Economy | 02/04/25 - 02/18/25 | from $ 736* Viewed: 1 day ago |
| FromAspen (ASE) | ToPorto (OPO) | Roundtrip | Economy | 01/29/25 - 02/12/25 | from $ 736* Viewed: 5 minutes ago |
| FromBoise (BOI) | ToPorto (OPO) | Roundtrip | Economy | 02/04/25 - 02/18/25 | from $ 835* Viewed: 1 day ago |
| FromGreat Falls (GTF) | ToPorto (OPO) | Roundtrip | Economy | 01/29/25 - 02/12/25 | from $ 733* Viewed: 1 day ago |
| FromHelena (HLN) | ToPorto (OPO) | Roundtrip | Economy | 02/05/25 - 02/19/25 | from $ 733* Viewed: 1 day ago |
| FromBillings (BIL) | ToPorto (OPO) | Roundtrip | Economy | 02/11/25 - 02/25/25 | from $ 635* Viewed: 1 day ago |
| FromVail (EGE) | ToPorto (OPO) | Roundtrip | Economy | 02/12/25 - 02/26/25 | from $ 735* Viewed: 1 day ago |
| FromKalispell (FCA) | ToPorto (OPO) | Roundtrip | Economy | 02/05/25 - 02/12/25 | from $ 733* Viewed: 1 day 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.
