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WBU to CEI: distance & flight time
Boulder (Boulder Municipal Airport) → Chiang Rai (Chiang Rai International Airport)
7,987 mi
12,854 km · 6,941 nm
16h 8m
estimated nonstop flight time
+13h
time difference · heading northwest
See live WBU→CEI fares Phone-only fares on this route — call free
Flight time details
7,987 miles nonstop takes roughly 16h 8m 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
- WBU — Boulder Municipal Airport · Boulder, 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 WBU
- DEN · Denver International Airport32 mi away
- BJC · Rocky Mountain Metropolitan Airport11 mi away
- FNL · Northern Colorado Regional Airport31 mi away
- BFK · Buckley Air Force Base34 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 WBU from CEI?
The flight distance from Boulder (WBU) to Chiang Rai (CEI) is 7,987 miles (12,854 km, 6,941 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from WBU to CEI?
A nonstop flight takes about 16h 8m 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 Boulder and Chiang Rai?
Chiang Rai is 13 hours ahead of Boulder.
What is the cheapest way to fly from WBU to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on WBU–CEI that never appear on search engines, with no booking fees.