Need help booking?
Unpublished phone-only deals available
BNJ to CEI: distance & flight time
Sankt-Augustin (Bonn-Hangelar Airport) → Chiang Rai (Chiang Rai International Airport)
5,275 mi
8,489 km · 4,584 nm
10h 49m
estimated nonstop flight time
—
time difference · heading east
See live BNJ→CEI fares Phone-only fares on this route — call free
Flight time details
5,275 miles nonstop takes roughly 10h 49m gate to gate, flying east. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- BNJ — Bonn-Hangelar Airport · Sankt-Augustin, Germany
- 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 BNJ
- CGN · Cologne Bonn Airport7 mi away
- FRA · Frankfurt am Main Airport80 mi away
- DUS · Düsseldorf Airport40 mi away
- SGE · Siegerland Airport40 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 BNJ from CEI?
The flight distance from Sankt-Augustin (BNJ) to Chiang Rai (CEI) is 5,275 miles (8,489 km, 4,584 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BNJ to CEI?
A nonstop flight takes about 10h 49m 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 cheapest way to fly from BNJ to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BNJ–CEI that never appear on search engines, with no booking fees.