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CPR to CEI: distance & flight time
Casper (Casper-Natrona County International Airport) → Chiang Rai (Chiang Rai International Airport)
7,781 mi
12,523 km · 6,762 nm
15h 43m
estimated nonstop flight time
+13h
time difference · heading northwest
See live CPR→CEI fares Phone-only fares on this route — call free
Flight time details
7,781 miles nonstop takes roughly 15h 43m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time gain when reading arrival times on your ticket.
The two airports
- CPR — Casper-Natrona County International Airport · Casper, United States
- 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 CPR
- RWL · Rawlins Municipal Airport/Harvey Field85 mi away
- RIW · Riverton Regional Airport101 mi away
- SAA · Shively Field103 mi away
- WRL · Worland Municipal Airport104 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 CPR from CEI?
The flight distance from Casper (CPR) to Chiang Rai (CEI) is 7,781 miles (12,523 km, 6,762 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CPR to CEI?
A nonstop flight takes about 15h 43m 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 Casper and Chiang Rai?
Chiang Rai is 13 hours ahead of Casper.
What is the cheapest way to fly from CPR to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CPR–CEI that never appear on search engines, with no booking fees.