Need help booking?
Unpublished phone-only deals available
ACH to CEI: distance & flight time
Altenrhein (St Gallen Altenrhein Airport) → Chiang Rai (Chiang Rai International Airport)
5,226 mi
8,411 km · 4,542 nm
10h 43m
estimated nonstop flight time
+5h
time difference · heading east
See live ACH→CEI fares Phone-only fares on this route — call free
Flight time details
5,226 miles nonstop takes roughly 10h 43m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 5-hour time gain when reading arrival times on your ticket.
The two airports
- ACH — St Gallen Altenrhein Airport · Altenrhein, Switzerland
- 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 ACH
- HOH · Hohenems-Dornbirn Airport9 mi away
- FDH · Friedrichshafen Airport13 mi away
- ZRH · Zürich Airport47 mi away
- FMM · Memmingen Allgau Airport47 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 ACH from CEI?
The flight distance from Altenrhein (ACH) to Chiang Rai (CEI) is 5,226 miles (8,411 km, 4,542 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ACH to CEI?
A nonstop flight takes about 10h 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 Altenrhein and Chiang Rai?
Chiang Rai is 5 hours ahead of Altenrhein.
What is the cheapest way to fly from ACH to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ACH–CEI that never appear on search engines, with no booking fees.