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RAP to CEI: distance & flight time
Rapid City (Rapid City Regional Airport) → Chiang Rai (Chiang Rai International Airport)
7,783 mi
12,525 km · 6,763 nm
15h 44m
estimated nonstop flight time
+13h
time difference · heading northwest
See live RAP→CEI fares Phone-only fares on this route — call free
Flight time details
7,783 miles nonstop takes roughly 15h 44m 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
- RAP — Rapid City Regional Airport · Rapid City, 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 RAP
- RCA · Ellsworth Air Force Base7 mi away
- SPF · Black Hills Airport-Clyde Ice Field47 mi away
- CDR · Chadron Municipal Airport83 mi away
- GCC · Gillette Campbell County Airport125 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 RAP from CEI?
The flight distance from Rapid City (RAP) to Chiang Rai (CEI) is 7,783 miles (12,525 km, 6,763 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RAP to CEI?
A nonstop flight takes about 15h 44m 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 Rapid City and Chiang Rai?
Chiang Rai is 13 hours ahead of Rapid City.
What is the cheapest way to fly from RAP to CEI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RAP–CEI that never appear on search engines, with no booking fees.