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THR to DEC: distance & flight time
Teheran (Mehrabad International Airport) → Decatur (Decatur Airport)
6,636 mi
10,680 km · 5,767 nm
13h 29m
estimated nonstop flight time
-8.5h
time difference · heading northwest
See live THR→DEC fares Phone-only fares on this route — call free
Flight time details
6,636 miles nonstop takes roughly 13h 29m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 8.5-hour time set-back when reading arrival times on your ticket.
The two airports
- THR — Mehrabad International Airport · Teheran, Iran
- DEC — Decatur Airport · Decatur, 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 THR
- IKA · Imam Khomeini International Airport21 mi away
- PYK · Payam International Airport28 mi away
- NSH · Noshahr Airport68 mi away
- GZW · Qazvin Airport80 mi away
Frequently asked questions
How far is THR from DEC?
The flight distance from Teheran (THR) to Decatur (DEC) is 6,636 miles (10,680 km, 5,767 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from THR to DEC?
A nonstop flight takes about 13h 29m 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 Teheran and Decatur?
Decatur is 8.5 hours behind Teheran.
What is the cheapest way to fly from THR to DEC?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on THR–DEC that never appear on search engines, with no booking fees.