Distance From Gellhorn Pad Heliport to Islamabad International Airport

The distance from Gellhorn Pad Heliport () to Islamabad International Airport (ISB) is 7993 miles or 12863 kilometers or 6941 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 Houston ( United States ) to Attock ( Pakistan )?

A one-way nonstop (direct) flight between Houston and Attock takes around 18 hours 22 minutes.

Estimated flight time from Gellhorn Pad Heliport, Houston, United States to Islamabad International Airport, Attock, Pakistan is 18 hours 22 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 • - ISB

Kilometers		12863 km
Statute Miles		7993 miles
Nautical Miles		6941 nm
Avg. Time of Flight		18 hours 22 minutes

Gellhorn Pad Heliport to Islamabad International Airport Flight Route Map - to ISB Flight Path

Location of Gellhorn Pad Heliport & Islamabad International Airport is given below.
Click the map to view Houston to Attock nonstop flight path and travel direction.

Click to see flight route on Google Map between Houston, United States and Attock, Pakistan. .

Nonstop flight route between Houston, United States and Attock, Pakistan.

Time Difference Between the Airports • - ISB

Time difference between Houston (United States) and Attock (Pakistan) is 10 Hours.
Attock time is 10 Hours ahead of Houston.

Location	Local Time
Houston (United States)	2026-05-07, 09:21:51 CDT
Attock (Pakistan)	2026-05-07, 19:21:51 PKT

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

Gellhorn Pad Heliport ( / 82TA) Houston, United States

Destination

Islamabad International Airport (ISB / OPIS) Attock, Pakistan