Need help booking?
Unpublished phone-only deals available
NHT to GAI: distance & flight time
Northolt (RAF Northolt) → Gaithersburg (Montgomery County Airpark)
3,645 mi
5,867 km · 3,168 nm
7h 37m
estimated nonstop flight time
-5h
time difference · heading west
See live NHT→GAI fares Phone-only fares on this route — call free
Flight time details
3,645 miles nonstop takes roughly 7h 37m 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
- NHT — RAF Northolt · Northolt, 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 NHT
- LHR · London Heathrow Airport6 mi away
- LGW · London Gatwick Airport30 mi away
- HYC · Wycombe Air Park17 mi away
- LCY · London City Airport21 mi away
Near GAI
Frequently asked questions
How far is NHT from GAI?
The flight distance from Northolt (NHT) to Gaithersburg (GAI) is 3,645 miles (5,867 km, 3,168 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from NHT to GAI?
A nonstop flight takes about 7h 37m 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 Northolt and Gaithersburg?
Gaithersburg is 5 hours behind Northolt.
What is the cheapest way to fly from NHT to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on NHT–GAI that never appear on search engines, with no booking fees.