Distance From Slip Knot Landing Airport to Humberto Delgado Airport (Lisbon Portela Airport)

The distance from Slip Knot Landing Airport () to Humberto Delgado Airport (Lisbon Portela Airport) (LIS) is 3128 miles or 5034 kilometers or 2717 nautical miles.

The distance shown below is direct flight distance between airports. Straight-line distance does not account for the surface between the two points. It is the distance a bird or airplane would travel between the two points when flying above the surface. The straight line distance is the direct route between two points, regardless of whether or not there are roads that connect them.

---

How long does it take to travel from Windham ( United States ) to Lisbon ( Portugal )?

A one-way nonstop (direct) flight between Windham and Lisbon takes around 7 hours 11 minutes.

Estimated flight time from Slip Knot Landing Airport, Windham, United States to Humberto Delgado Airport (Lisbon Portela Airport), Lisbon, Portugal is 7 hours 11 minutes under avarage conditions. Your actual flying time may vary depending on wind direction/speed or weather conditions. This calculation does not include the departure and landing times of the aircraft. In addition, it does not cover the person identity check, ticket check-in and baggage collection times at the airport.

Travel Distance Between the Airports • - LIS

Kilometers		5034 km
Statute Miles		3128 miles
Nautical Miles		2717 nm
Avg. Time of Flight		7 hours 11 minutes

Slip Knot Landing Airport to Humberto Delgado Airport (Lisbon Portela Airport) Flight Route Map - to LIS Flight Path

Location of Slip Knot Landing Airport & Humberto Delgado Airport (Lisbon Portela Airport) is given below.
Click the map to view Windham to Lisbon nonstop flight path and travel direction.

Click to see flight route on Google Map between Windham, United States and Lisbon, Portugal. .

Nonstop flight route between Windham, United States and Lisbon, Portugal.

Time Difference Between the Airports • - LIS

Time difference between Windham (United States) and Lisbon (Portugal) is 4 Hours.
Lisbon time is 4 Hours ahead of Windham.

Location	Local Time
Windham (United States)	2026-03-21, 03:27:09 EDT
Lisbon (Portugal)	2026-03-21, 07:27:09 WET

Why should you arrive 3 hours before international flight? Flyers who are traveling to an international destination should arrive at the airport earlier than domestic flyers. This is because international flights can have additional check-in requirements, like passport verification, that need to be completed before you receive your boarding pass.

Origin

Slip Knot Landing Airport ( / 24ME) Windham, United States

Destination

Humberto Delgado Airport (Lisbon Portela Airport) (LIS / LPPT) Lisbon, Portugal