Distance From Castle Airport to London Gatwick Airport, MER - LGW Distance

The distance from Castle Airport (MER) to London Gatwick Airport (LGW) is 5338 miles or 8590 kilometers or 4635 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 Merced ( United States ) to London ( United Kingdom )?

A one-way nonstop (direct) flight between Merced and London takes around 12 hours 16 minutes.

Estimated flight time from Castle Airport, Merced, United States to London Gatwick Airport, London, United Kingdom is 12 hours 16 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 • MER - LGW

Kilometers		8590 km
Statute Miles		5338 miles
Nautical Miles		4635 nm
Avg. Time of Flight		12 hours 16 minutes

Castle Airport to London Gatwick Airport Flight Route Map - MER to LGW Flight Path

Location of Castle Airport & London Gatwick Airport is given below.
Click the map to view Merced to London nonstop flight path and travel direction.

Click to see flight route on Google Map between Merced, United States and London, United Kingdom. .

Nonstop flight route between Merced, United States and London, United Kingdom.

Time Difference Between the Airports • MER - LGW

Time difference between Merced (United States) and London (United Kingdom) is 8 Hours.
London time is 8 Hours ahead of Merced.

Location	Local Time
Merced (United States)	2026-06-18, 16:41:59 PDT
London (United Kingdom)	2026-06-19, 00:41:59 BST

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

Castle Airport (MER / KMER) Merced, United States

Destination

London Gatwick Airport (LGW / EGKK) London, United Kingdom