Title: Porto to Buffalo cheap flights from $585 (OPO to BUF) - Expedia.com ![Buffalo, NY](https://images.trvl-media.com/place/602674/87d981cf-5755-46d3-aea8-dd650f6a21eb.jpg?impolicy=fcrop&w=1200&h=500&q=medium) ![](https://images.trvl-media.com/place/602674/87d981cf-5755-46d3-aea8-dd650f6a21eb.jpg?impolicy=fcrop&w=1200&h=500&q=medium) # $585 Cheap Flights from Porto (OPO) to Buffalo (BUF) [View $585 flight on Wed, Nov 4, 2026](https://expedia.com/Flights-Search?trip=oneway&leg1=from:OPO,to:BUF,departure:11/4/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:584.43&airProductToken=AQrAAQo-CMmEARIEMTE1MBjucyCMGCipoJwDMPmgnAM4T0AAWAFqBU5PQkFHcglPTE41QzVCV1B6CgjZsgESBDExNTAKPgjCggESBDE2MzcYjBggrhwo7KGcAzCSppwDOE9AAVgBagVOT0JBR3IJT0xONUM1QldQegoIwYIBEgQxNjM3Cj4IwoIBEgQ1NTM0GK4cIIEtKJOnnAMw9KecAzhPQAFYAWoFTk9CQUdyCU9MTjVDNUJXUHoKCMGCARIENTUzNBIKCAEQARgBKgJCQRgBIgQIARABKAIoAzAN) ## Popular airlines from Porto Airport (OPO) to Buffalo Niagara Intl. Airport (BUF) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_BA.svg) British Airways [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"BA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_AA.svg) American Airlines [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"AA"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_DL.svg) Delta [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"DL"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_IB.svg) Iberia [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"IB"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LH.svg) Lufthansa [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LH"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_LX.svg) Swiss International Air Lines [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"LX"}}]) - ![](https://forever.travel-assets.com/flex/flexmanager/images/2024/09/23/landing_airline_sq_logo_SN.svg) Brussels Airlines [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:4/3/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&filters=[{"preferredAirlineFilterValue":{"carrierCode":"SN"}}]) ## Cheap Flights from Porto to Buffalo (OPO-BUF) Prices were available within the past 7 days and start at $585 for one-way flights and $941 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply. All deals One way Roundtrip ![Iberia](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/IB.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $941 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:940.63&airProductToken=AQqjAQoxCMmEARIEMTE1NBjucyCMGCj8044DMMzUjgM4T0AAWAFqBUJBU0lDcghPTE43QzhCVwowCMmEARIDMzQxGIwYIK4cKMnajgMwjd-OAzhPQAFYAWoFQkFTSUNyCE9MTjdDOEJXCjwIyYQBEgQ4MzI0GK4cIIEtKKvhjgMwl-KOAzhPQAFYAWoFQkFTSUNyCE9MTjdDOEJXegkIwYIBEgM1NjQKpAEKPQjJhAESBDgzMzkYgS0grhwoybaPAzDJt48DOE9AAFgBagVCQVNJQ3IIT0xON0M4Qld6CgjBggESBDQ0MTMKMAjJhAESAzM0MhiuHCCMGCijuo8DMJy-jwM4T0ABWAFqBUJBU0lDcghPTE43QzhCVwoxCMmEARIEMTE1MxiMGCDucyjEw48DMJTEjwM4T0ABWAFqBUJBU0lDcghPTE43QzhCVxIKCAIQARgCKgJJQhgBIgQIARABKAIoAygEMA0) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $977 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:976.13&airProductToken=AQptCjQI1YIBEgMyMzkY7nMgxI0BKMDOjgMwm9KOAzhLQABYAWoIRUNPQkFTSUNyCEtMVlFLWEJRCjUI1YIBEgQzNDc2GMSNASCBLSiy1o4DMJfXjgM4S0ABWAFqCEVDT0JBU0lDcghLTFZRS1hCUQqjAQo0CNWCARIEMzQzMxiBLSCIGCjYtI8DMKe1jwM4S0AAWAFqCEVDT0JBU0lDcghLTFZRS1hCUQo1CNWCARIEMjM5NhiIGCDEjQEo7bWPAzDEto8DOEtAAVgBaghFQ09CQVNJQ3IIS0xWUUtYQlEKNAjVggESAzIzOBjEjQEg7nMo2rqPAzCDvo8DOEtAAVgBaghFQ09CQVNJQ3IIS0xWUUtYQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $989 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:988.63&airProductToken=AQptCjQI1YIBEgMyMzkY7nMgxI0BKMDOjgMwm9KOAzhLQABYAWoIRUNPQkFTSUNyCEtMVlFLWEJRCjUI1YIBEgQzNjA3GMSNASCBLSi11I4DMI3VjgM4S0ABWAFqCEVDT0JBU0lDcghLTFZRS1hCUQptCjUI1YIBEgQzNDIwGIEtIMSNASjYtI8DMK21jwM4TEAAWAFqCEVDT0JBU0lDcghMTFZRS1hCUQo0CNWCARIDMjM4GMSNASDucyjauo8DMIO-jwM4TEABWAFqCEVDT0JBU0lDcghMTFZRS1hCURIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $994 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:993.13&airProductToken=AQqjAQo0CNWCARIDMTQ1GO5zIMSNASiX0I4DMPLTjgM4S0AAWAFqCEVDT0JBU0lDcghLTFZRS1hCUQo1CNWCARIEMjY3NxjEjQEgiBgo4dWOAzC81o4DOEtAAVgBaghFQ09CQVNJQ3IIS0xWUUtYQlEKNAjVggESBDM1MTYYiBgggS0okteOAzDv144DOEtAAVgBaghFQ09CQVNJQ3IIS0xWUUtYQlEKrwEKNAjVggESBDM0MzMYgS0giBgo2LSPAzCntY8DOExAAFgBaghFQ09MSUdIVHIITExWUUtYQlEKNQjVggESBDIzOTYYiBggxI0BKO21jwMwxLaPAzhMQAFYAWoIRUNPTElHSFRyCExMVlFLWEJRCkAIzJABEgQ4OTg5GMSNASDucyjauo8DMIO-jwM4TEABWAFqCEVDT0xJR0hUcghMTFZRS1hCUXoJCNWCARIDMjM4EgoIARABGAEqAlVBGAEiBAgBEAEoAigDKAQwAQ) ![TAP Portugal](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/TP.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $1,001 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1000.73&airProductToken=AQqtAQo1CNSgARIEMzk2MRjucyCLkgEo_s-OAzC60I4DOEVAAFgBaghESVNDT1VOVHIIRUwwRFNJODAKNAjUoAESAzIwORiLkgEgqVEooNKOAzCF1o4DOEVAAVgBaghESVNDT1VOVHIIRUwwRFNJODAKPgjUoAESBDQzMDYYqVEggS0oh9eOAzDv144DOEVAAVgBaghESVNDT1VOVHIIRUwwRFNJODB6CAjCbBIDMTAyCqIBCjMIwmwSBDI5MDEYgS0gqVEoqLmPAzCAuo8DOFVAAFgBaghESVNDT1VOVHIIRUwwRFNJODAKNAjUoAESAzIxMBipUSCLkgEonbyPAzDLv48DOEVAAVgBaghESVNDT1VOVHIIRUwwRFNJODAKNQjUoAESBDE5MjgYi5IBIO5zKKzBjwMw7cGPAzhFQAFYAWoIRElTQ09VTlRyCEVMMERTSTgwEgoIARABGAEqAlRQGAEiBAgBEAEoAigDKAQwAQ) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Thu, May 21 - Tue, May 26 OPO Porto BUF Buffalo $1,012 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:5/21/2026TANYT&leg2=from:BUF,to:OPO,departure:5/26/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1011.83&airProductToken=AQq5AQo0CMyQARIEMTE4MRjucyClBCiMxo0DMLbHjQM4S0AAWAFqCEVDT0xJR0hUcghLTFZRQVhCUQo_CMyQARIEOTI1MhilBCCIGCjuyo0DMIDPjQM4S0ABWAFqCEVDT0xJR0hUcghLTFZRQVhCUXoJCNWCARIDOTMzCkAIzJABEgQ3ODI0GIgYIIEtKJLQjQMw79CNAzhLQAFYAWoIRUNPTElHSFRyCEtMVlFBWEJRegoI1YIBEgQzNTE2CrkBCkAIzLABEgQzMTYxGIEtIK4cKLKEjgMwq4WOAzhTQABYAWoIRUNPTElHSFRyCFNMSFhBWEJRegoI1YIBEgQ0MzgxCj8IzLABEgQzMjA1GK4cILk8KOeFjgMw-YmOAzhTQAFYAWoIRUNPTElHSFRyCFNMSFhBWEJRegkI1YIBEgMwMDMKNAjMsAESBDIwNjYYuTwg7nMo8YqOAzCRjI4DOFNAAVgBaghFQ09MSUdIVHIIU0xIWEFYQlESCggCEAEYAioCTEgYASIECAEQASgCKAMoBDAL) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Thu, May 21 - Tue, May 26 OPO Porto BUF Buffalo $1,017 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:5/21/2026TANYT&leg2=from:BUF,to:OPO,departure:5/26/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1016.03&airProductToken=AQq5AQo0CMyQARIEMTE4MRjucyClBCiMxo0DMLbHjQM4S0AAWAFqCEVDT0xJR0hUcghLTFZRQVhCUQo_CMyQARIEOTI5MBilBCCIGCjMyI0DMOPMjQM4S0ABWAFqCEVDT0xJR0hUcghLTFZRQVhCUXoJCNWCARIDOTg4CkAIzJABEgQ3ODI0GIgYIIEtKJLQjQMw79CNAzhLQAFYAWoIRUNPTElHSFRyCEtMVlFBWEJRegoI1YIBEgQzNTE2Cq0BCkAIzJABEgQ3Njk5GIEtIIgYKOqCjgMwtoOOAzhTQABYAWoIRUNPTElHSFRyCFNMSFhBWEJRegoI1YIBEgQzNDMwCjMIzJABEgM0MTkYiBggpQQoo4aOAzCDio4DOFNAAVgBaghFQ09MSUdIVHIIU0xIWEFYQlEKNAjMkAESBDExNzYYpQQg7nMo2IqOAzCCjI4DOFNAAVgBaghFQ09MSUdIVHIIU0xIWEFYQlESCggCEAEYAioCTEgYASIECAEQASgCKAMoBDAL) ![United](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/UA.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $1,023 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1022.13&airProductToken=AQqjAQo0CNWCARIDMTQ1GO5zIMSNASiX0I4DMPLTjgM4S0AAWAFqCEVDT0JBU0lDcghLTFZRS1hCUQo1CNWCARIEMjY3NxjEjQEgiBgo4dWOAzC81o4DOEtAAVgBaghFQ09CQVNJQ3IIS0xWUUtYQlEKNAjVggESBDM1MTYYiBgggS0okteOAzDv144DOEtAAVgBaghFQ09CQVNJQ3IIS0xWUUtYQlEKogEKMwjVggESAzU0MxiBLSCuHCiUtY8DMIu2jwM4VEAAWAFqCEVDT0JBU0lDcghUTEhRS1hCUQo1CNWCARIEMjMwMRiuHCDEjQEoubaPAzDLt48DOFRAAVgBaghFQ09CQVNJQ3IIVExIUUtYQlEKNAjVggESAzIzOBjEjQEg7nMo2rqPAzCDvo8DOFRAAVgBaghFQ09CQVNJQ3IIVExIUUtYQlESCggBEAEYASoCVUEYASIECAEQASgCKAMoBDAB) ![Lufthansa](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LH.gif) Thu, May 21 - Tue, May 26 OPO Porto BUF Buffalo $1,036 Roundtrip found 3 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:5/21/2026TANYT&leg2=from:BUF,to:OPO,departure:5/26/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1035.43&airProductToken=AQqFAQpACMyQARIEODk5OBjucyDEjQEol8mNAzDyzI0DOEtAAFgBaghFQ09MSUdIVHIIS0xWUUFYQlF6CQjVggESAzE0NQpBCMyQARIEODU3NRjEjQEggS0oss-NAzCX0I0DOEtAAVgBaghFQ09MSUdIVHIIS0xWUUFYQlF6CgjVggESBDM0NzYKuQEKQAjMsAESBDMxNjEYgS0grhwosoSOAzCrhY4DOFNAAFgBaghFQ09MSUdIVHIIU0xIWEFYQlF6CgjVggESBDQzODEKPwjMsAESBDMyMDUYrhwguTwo54WOAzD5iY4DOFNAAVgBaghFQ09MSUdIVHIIU0xIWEFYQlF6CQjVggESAzAwMwo0CMywARIEMjA2Nhi5PCDucyjxio4DMJGMjgM4U0ABWAFqCEVDT0xJR0hUcghTTEhYQVhCURIKCAIQARgCKgJMSBgBIgQIARABKAIoAygEMAs) ![Swiss International Air Lines](//images.trvl-media.com/media/content/expus/graphics/static_content/fusion/v0.1b/images/airlines/LX.gif) Tue, Jun 2 - Thu, Jun 11 OPO Porto BUF Buffalo $1,044 Roundtrip found 4 days ago [](https://expedia.com/Flights-Search?trip=roundtrip&leg1=from:OPO,to:BUF,departure:6/2/2026TANYT&leg2=from:BUF,to:OPO,departure:6/11/2026TANYT&passengers=children:0,adults:1,seniors:0,infantinlap:N&mode=search&options=sortby:price&paandi=true&flp=mdl:flights-flex-module,price:1043.53&airProductToken=AQqrAQo0CMywARIEMjA2MRjucyC5PCiszo4DMMLPjgM4S0AAWAFqCEVDT0xJR0hUcghLTFZRS1hCUQoxCMywARIBOBi5PCCuHCj5z44DMMfUjgM4S0ABWAFqCEVDT0xJR0hUcghLTFZRS1hCUQpACMywARIEMzE2MBiuHCCBLSjV1Y4DML_WjgM4S0ABWAFqCEVDT0xJR0hUcghLTFZRS1hCUXoKCNWCARIEMTMzNQptCjUI1YIBEgQzNzE2GIEtIMSNASjkuo8DML-7jwM4U0AAWAFqCEVDT0JBU0lDcghTTEhYS1hCUQo0CNWCARIDMTQ0GMSNASDucyiEvI8DMK2_jwM4U0ABWAFqCEVDT0JBU0lDcghTTEhYS1hCURIKCAEQARgBKgJVQRgBIgQIARABKAIoAygEMAE) ![](https://forever.travel-assets.com/flex/flexmanager/images/2026/02/06/expedia-sale-2026-desktop-us-ca.jpg?impolicy=fcrop&w=1400&h=600&q=mediumHigh) ## The Annual Vacation Sale Members save up to 40% on hotels and homes. Plan this year’s big trip and save. [Book now](https://expedia.com/deals?rfrr=FTG_SPRING_PROMO_) ## Alternative airports near Buffalo Prices were available within the past 7 days. Prices and availability are subject to change. [](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:3/31/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) BUF Buffalo Niagara Intl. CheapestClosest 16 min [Flights from $1,478 ](https://www.expedia.com/Flights-Search?leg1=from:OPO,to:BUF,departure:3/27/2026TANYT&leg2=from:BUF,to:OPO,departure:3/31/2026TANYT&trip=roundtrip&passengers=adults:1,children:0,infantinlap:N&mode=search&pageId=0&sortOrder=INCREASING&sortType=PRICE) ## Frequently asked questions ### How much does a flight from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.) cost? ### What is the cheapest month to fly from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### Which airlines fly direct from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### What is the cheapest airline that flies from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### How do I find cheap flights from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### What is the best time to fly from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### What is the earliest flight from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### What day of the week has the most flights from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### What are the most popular departure times for flights from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### How long does it take to fly from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ### Can you fly business or first class from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? > - Austrian Airlines > - Iberia > - United Airlines > - Air Canada > - Lufthansa > - Turkish Airlines ### How do I earn miles on a Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight with Expedia? ### What airports do you fly into for Buffalo from Dr. Francisco de Sa Carneiro (OPO)? ### Is it cheaper to buy a plane ticket from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.) at the last minute? ### Is it cheaper to book a Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.) flight and hotel package? ### Can I cancel or change the date of my flight from Porto (OPO-Dr. Francisco de Sa Carneiro) to Buffalo, NY (BUF-Buffalo Niagara Intl.)? ## Travel information | Origin airport | Dr. Francisco de Sa Carneiro | | ------------------- | ---------------------------- | | Destination airport | Buffalo Niagara Intl. | | Roundtrip price | $941 | | Distance | 3485 mi | ## Book with confidence # Porto to Buffalo Flights The cheapest times to fly from Porto to Buffalo On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Porto to Buffalo are during the month of June. You can find some of the cheapest flights from Porto to Buffalo with Expedia's search tool and vast selection of airlines. The best time to book a flight from Porto to Buffalo Sunday is one of the best days to book for cheap flights from Porto to Buffalo: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance. How to find cheap round-trip tickets from Porto to Buffalo Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Porto to Buffalo in 2026\. You can also book with separate airlines for your outbound and return journeys, from $585 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference\*. This is available for a small fee, and is free to One Key Gold and Platinum tier members. Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Porto to Buffalo flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps. You could also save big by booking one of Expedia's [vacation packages](https://www.expedia.com/package-deals). Bundling together your Porto to Buffalo airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures. \*Terms apply. Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023\. 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