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CEI to THR: distance & flight time
Chiang Rai (Chiang Rai International Airport) → Teheran (Mehrabad International Airport)
3,125 mi
5,029 km · 2,716 nm
6h 36m
estimated nonstop flight time
-3.5h
time difference · heading northwest
See live CEI→THR fares Phone-only fares on this route — call free
Flight time details
3,125 miles nonstop takes roughly 6h 36m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 3.5-hour time set-back when reading arrival times on your ticket.
The two airports
- CEI — Chiang Rai International Airport · Chiang Rai, Thailand
- THR — Mehrabad International Airport · Teheran, 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 CEI
- THL · Tachileik Airport37 mi away
- HOE · Ban Huoeisay Airport42 mi away
- MOG · Mong Hsat Airport56 mi away
- KET · Kengtung Airport95 mi away
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 CEI from THR?
The flight distance from Chiang Rai (CEI) to Teheran (THR) is 3,125 miles (5,029 km, 2,716 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CEI to THR?
A nonstop flight takes about 6h 36m 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 Chiang Rai and Teheran?
Teheran is 3.5 hours behind Chiang Rai.
What is the cheapest way to fly from CEI to THR?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CEI–THR that never appear on search engines, with no booking fees.