Need help booking?
Unpublished phone-only deals available
DEF to CEI: distance & flight time
Dezful (Dezful Airport) → Chiang Rai (Chiang Rai International Airport)
3,274 mi
5,269 km · 2,845 nm
6h 53m
estimated nonstop flight time
+3.5h
time difference · heading east
See live DEF→CEI fares Phone-only fares on this route — call free
Flight time details
3,274 miles nonstop takes roughly 6h 53m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time gain when reading arrival times on your ticket.
The two airports
- DEF — Dezful Airport · Dezful, Iran
- CEI — Chiang Rai International Airport · Chiang Rai, Thailand
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 DEF
- KHD · Khoram Abad Airport69 mi away
- AWZ · Ahwaz Airport79 mi away
- OMI · Omidiyeh Airport129 mi away
- MRX · Mahshahr Airport137 mi away
Near CEI
- THL · Tachileik Airport37 mi away
- HOE · Ban Huoeisay Airport42 mi away
- MOG · Mong Hsat Airport56 mi away
- KET · Kengtung Airport95 mi away
Frequently asked questions
How far is DEF from CEI?
The flight distance from Dezful (DEF) to Chiang Rai (CEI) is 3,274 miles (5,269 km, 2,845 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DEF to CEI?
A nonstop flight takes about 6h 53m 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 Dezful and Chiang Rai?
Chiang Rai is 3.5 hours ahead of Dezful.
What is the cheapest way to fly from DEF to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DEF–CEI that never appear on search engines, with no booking fees.