Need help booking?
Unpublished phone-only deals available
IST to GAI: distance & flight time
Istanbul (Istanbul Airport) → Gaithersburg (Montgomery County Airpark)
5,190 mi
8,353 km · 4,510 nm
10h 39m
estimated nonstop flight time
-7h
time difference · heading northwest
See live IST→GAI fares Phone-only fares on this route — call free
Flight time details
5,190 miles nonstop takes roughly 10h 39m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- IST — Istanbul Airport · Istanbul, Turkey
- 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 IST
- ISL · Atatürk International Airport21 mi away
- SAW · Sabiha Gökçen International Airport39 mi away
- TEQ · Tekirdağ Çorlu Airport44 mi away
- BTZ · Bursa Airport73 mi away
Near GAI
Frequently asked questions
How far is IST from GAI?
The flight distance from Istanbul (IST) to Gaithersburg (GAI) is 5,190 miles (8,353 km, 4,510 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from IST to GAI?
A nonstop flight takes about 10h 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 Istanbul and Gaithersburg?
Gaithersburg is 7 hours behind Istanbul.
What is the cheapest way to fly from IST to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on IST–GAI that never appear on search engines, with no booking fees.