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GAI to DEF: distance & flight time
Gaithersburg (Montgomery County Airpark) → Dezful (Dezful Airport)
6,384 mi
10,274 km · 5,548 nm
12h 59m
estimated nonstop flight time
+7.5h
time difference · heading northeast
See live GAI→DEF fares Phone-only fares on this route — call free
Flight time details
6,384 miles nonstop takes roughly 12h 59m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7.5-hour time gain when reading arrival times on your ticket.
The two airports
- GAI — Montgomery County Airpark · Gaithersburg, United States
- DEF — Dezful Airport · Dezful, Iran
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 GAI
Near DEF
- KHD · Khoram Abad Airport69 mi away
- AWZ · Ahwaz Airport79 mi away
- OMI · Omidiyeh Airport129 mi away
- MRX · Mahshahr Airport137 mi away
Frequently asked questions
How far is GAI from DEF?
The flight distance from Gaithersburg (GAI) to Dezful (DEF) is 6,384 miles (10,274 km, 5,548 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GAI to DEF?
A nonstop flight takes about 12h 59m 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 Gaithersburg and Dezful?
Dezful is 7.5 hours ahead of Gaithersburg.
What is the cheapest way to fly from GAI to DEF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GAI–DEF that never appear on search engines, with no booking fees.