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LCY to GAI: distance & flight time
London (London City Airport) → Gaithersburg (Montgomery County Airpark)
3,666 mi
5,899 km · 3,185 nm
7h 39m
estimated nonstop flight time
-5h
time difference · heading west
See live LCY→GAI fares Phone-only fares on this route — call free
Flight time details
3,666 miles nonstop takes roughly 7h 39m gate to gate, flying west. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time set-back when reading arrival times on your ticket.
The two airports
- LCY — London City Airport · London, United Kingdom
- GAI — Montgomery County Airpark · Gaithersburg, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near LCY
- LHR · London Heathrow Airport22 mi away
- LGW · London Gatwick Airport27 mi away
- BQH · London Biggin Hill Airport12 mi away
- NHT · RAF Northolt21 mi away
Near GAI
Frequently asked questions
How far is LCY from GAI?
The flight distance from London (LCY) to Gaithersburg (GAI) is 3,666 miles (5,899 km, 3,185 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LCY to GAI?
A nonstop flight takes about 7h 39m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between London and Gaithersburg?
Gaithersburg is 5 hours behind London.
What is the cheapest way to fly from LCY to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LCY–GAI that never appear on search engines, with no booking fees.