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Did you mean flights from Lisbon to Islip, Long Island?
United States
Long Island MacArthur Airport
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Portugal
Portela Airport
At present, there are no direct flights from Islip, Long Island to Lisbon.
However, there are several flights from ISP to LIS with a stopover.
Select a stopover airport from the list below to see which airlines operate flights from ISP to LIS, and to see what flight schedules are available.
The Mediterranean regions near Lisbon are known for their warm, arid summers, where temperatures often go beyond 30°C (86°F). In some inland spots, the heat can climb even higher, sometimes reaching 40°C (104°F) or more. The winters are pleasantly mild, accompanied by some rainfall. This lovely climate, paired with breathtaking landscapes and bright, sunny days attract visitors from around the globe.
Lisbon is a wonderful place to visit all year long, but spring (March-May) and fall (September-November) are the best seasons to visit. The weather is pleasantly warm during these times, especially since the summers can be quite hot in those regions.

Unfortunately, there are no airlines that cover the full route (with 1 stopover) from Islip, Long Island ISP to Lisbon LIS at this moment.
All flights from Islip, Long Island to Lisbon are operated by a combination of multiple carriers, which are listed below:
Unfortunately, there are no alliances that cover the full route (with 1 stopover) from Islip, Long Island ISP to Lisbon LIS at this moment.
You can fly the full journey from ISP to LIS in Economy only.
For the first part of this route, flights in Economy are available only.
Again depending on your stopover airport, available classes for the second part of this route are Economy, Business Class and First Class.
At this moment, it is not possible to cover the full route from Islip, Long Island to Lisbon (with 1 stopover) with one specific type of aircraft. All flights from Islip, Long Island to Lisbon are operated by a combination of multiple aircraft types.
The distance between Islip, Long Island and Lisbon is 3,325 miles (5,351 kilometers).
However, because there are no direct flights between ISP and LIS, the distance of the full journey varies between 3,335 and 5,078 miles (or 5,367 and 8,172 kilometers), depending on your stopover airport.
Flights from Islip, Long Island to Lisbon take from 7 hours and 59 minutes up to 10 hours and 50 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 Lisbon: Portela Airport (LIS).
From 7 hours and 59 minutes up to 10 hours and 50 minutes, depending on your stopover airport.
Note that this excludes the layover time in between connecting flights.
Because there are no direct flights between ISP and LIS, the total distance of the full journey varies between 3,335 and 5,078 miles (or 5,367 and 8,172 kilometers), depending on your stopover airport.
At this moment, flights from Islip, Long Island to Lisbon are operated by a combination of multiple airlines. There is no airline that operates the route in full.
Cape Air, Delta, TAP Portugal, Frontier Airlines, JetBlue and Southwest Airlines operate several connecting flights, but only partly.
There are no alliances flying from Islip, Long Island to Lisbon at this moment.
You can fly the full route (with 1 stopover) in Economy only.
There is no specific aircraft type that covers the full route (with 1 stopover) from Islip, Long Island to Lisbon at this moment.
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