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SEN to GAI: distance & flight time
Southend (Southend Airport) → Gaithersburg (Montgomery County Airpark)
3,690 mi
5,939 km · 3,207 nm
7h 42m
estimated nonstop flight time
-5h
time difference · heading west
See live SEN→GAI fares Phone-only fares on this route — call free
Flight time details
3,690 miles nonstop takes roughly 7h 42m 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
- SEN — Southend Airport · Southend, 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 SEN
- LGW · London Gatwick Airport48 mi away
- LHR · London Heathrow Airport50 mi away
- RCS · Rochester Airport17 mi away
- LCY · London City Airport28 mi away
Near GAI
Frequently asked questions
How far is SEN from GAI?
The flight distance from Southend (SEN) to Gaithersburg (GAI) is 3,690 miles (5,939 km, 3,207 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEN to GAI?
A nonstop flight takes about 7h 42m 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 Southend and Gaithersburg?
Gaithersburg is 5 hours behind Southend.
What is the cheapest way to fly from SEN to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEN–GAI that never appear on search engines, with no booking fees.