Distance From Humberto Delgado Airport (Lisbon Portela Airport) to Roberts International Airport, LIS - ROB Distance

The distance from Humberto Delgado Airport (Lisbon Portela Airport) (LIS) to Roberts International Airport (ROB) is 2251 miles or 3622 kilometers or 1954 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 Lisbon ( Portugal ) to Monrovia ( Liberia )?

A one-way nonstop (direct) flight between Lisbon and Monrovia takes around 5 hours 10 minutes.

Estimated flight time from Humberto Delgado Airport (Lisbon Portela Airport), Lisbon, Portugal to Roberts International Airport, Monrovia, Liberia is 5 hours 10 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 - ROB

Kilometers		3622 km
Statute Miles		2251 miles
Nautical Miles		1954 nm
Avg. Time of Flight		5 hours 10 minutes

Humberto Delgado Airport (Lisbon Portela Airport) to Roberts International Airport Flight Route Map - LIS to ROB Flight Path

Location of Humberto Delgado Airport (Lisbon Portela Airport) & Roberts International Airport is given below.
Click the map to view Lisbon to Monrovia nonstop flight path and travel direction.

Click to see flight route on Google Map between Lisbon, Portugal and Monrovia, Liberia. .

Nonstop flight route between Lisbon, Portugal and Monrovia, Liberia.

Time Difference Between the Airports • LIS - ROB

Time difference between Lisbon (Portugal) and Monrovia (Liberia) is 1 Hours.
Monrovia time is 1 Hours behind Lisbon.

Location	Local Time
Lisbon (Portugal)	2026-05-04, 05:40:29 WEST
Monrovia (Liberia)	2026-05-04, 04:40:29 GMT

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

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

Destination

Roberts International Airport (ROB / GLRB) Monrovia, Liberia