Distance From Reagan County Airport to Humberto Delgado Airport (Lisbon Portela Airport)

The distance from Reagan County Airport () to Humberto Delgado Airport (Lisbon Portela Airport) (LIS) is 5024 miles or 8085 kilometers or 4363 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.

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

A one-way nonstop (direct) flight between Big Lake and Lisbon takes around 11 hours 33 minutes.

Estimated flight time from Reagan County Airport, Big Lake, United States to Humberto Delgado Airport (Lisbon Portela Airport), Lisbon, Portugal is 11 hours 33 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		8085 km
Statute Miles		5024 miles
Nautical Miles		4363 nm
Avg. Time of Flight		11 hours 33 minutes

Reagan County Airport to Humberto Delgado Airport (Lisbon Portela Airport) Flight Route Map - to LIS Flight Path

Location of Reagan County Airport & Humberto Delgado Airport (Lisbon Portela Airport) is given below.
Click the map to view Big Lake to Lisbon nonstop flight path and travel direction.

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

Nonstop flight route between Big Lake, United States and Lisbon, Portugal.

Time Difference Between the Airports • - LIS

Time difference between Big Lake (United States) and Lisbon (Portugal) is 7 Hours.
Lisbon time is 7 Hours ahead of Big Lake.

Location	Local Time
Big Lake (United States)	2026-06-23, 21:15:57 MDT
Lisbon (Portugal)	2026-06-24, 04:15:57 WEST

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

Reagan County Airport ( / E41) Big Lake, United States

Destination

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