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Did you mean flights from Porto to Louisville?
United States
Louisville International Airport (Standiford Field)
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Portugal
Francisco Sá Carneiro Airport
At present, there are no direct flights from Louisville to Porto.
However, there are several flights from SDF to OPO with a stopover.
Select a stopover airport from the list below to see which airlines operate flights from SDF to OPO, and to see what flight schedules are available.
In Porto, the summers are known for being warm, long, and dry, with temperatures typically reaching about 30°C (86°F). The area’s breathtaking scenery complements the sun-filled lifestyle, making it a popular destination for visitors all year round who are looking for relaxation, fun by the water, and the beauty of the outdoors.
Porto is best explored from mid-spring to summer, specifically between April and September, as most rainfall occurs from October to February.

In total there are 2 airlines that cover the full route from Louisville SDF to Porto OPO. These airlines are:
All other flights from Louisville to Porto are operated by a combination of multiple carriers, which are listed below:
In total there are 2 alliances that cover the full route from Louisville SDF to Porto OPO. These alliances are:
You can fly the full journey from SDF to OPO in either Economy or Business Class. Premium Economy and First Class are not available on this route, at least not on the full route with just 1 stopover.
However, for the first part of this route, Economy and Business Class are available. This depends on the stopover airport of your choice though.
Again depending on your stopover airport, available classes for the second part of this route are Economy, Premium Economy, Business or First Class.
At this moment, it is not possible to cover the full route from Louisville to Porto (with 1 stopover) with one specific type of aircraft. All flights from Louisville to Porto are operated by a combination of multiple aircraft types.
The distance between Louisville and Porto is 3,965 miles (6,381 kilometers).
However, because there are no direct flights between SDF and OPO, the distance of the full journey varies between 3,961 and 3,969 miles (or 6,375 and 6,387 kilometers), depending on your stopover airport.
Flights from Louisville to Porto take from 8 hours and 57 minutes up to 9 hours and 5 minutes, depending on your stopover airport.
Please note that these times refer to the actual flight times, excluding the stopover time in between connecting flights, as this depends on your stopover airport as well as your date(s) of travel.
There is 1 airport in Porto: Francisco Sá Carneiro Airport (OPO).
From 8 hours and 57 minutes up to 9 hours and 5 minutes, depending on your stopover airport.
Note that this excludes the layover time in between connecting flights.
Because there are no direct flights between SDF and OPO, the total distance of the full journey varies between 3,961 and 3,969 miles (or 6,375 and 6,387 kilometers), depending on your stopover airport.
Delta and United Airlines are flying the full route from Louisville to Porto.
American Airlines, TAP Portugal and Spirit Airlines operate several connecting flights, but only partly.
SkyTeam and Star Alliance are flying from Louisville to Porto.
You can fly the full route from Louisville to Porto (with 1 stopover) in Economy and Business Class.
There is no specific aircraft type that covers the full route (with 1 stopover) from Louisville to Porto at this moment.
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