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CEI to RML: distance & flight time
Chiang Rai (Chiang Rai International Airport) → Colombo (Colombo Ratmalana Airport)
1,618 mi
2,605 km · 1,406 nm
3h 38m
estimated nonstop flight time
-1.5h
time difference · heading southwest
See live CEI→RML fares Phone-only fares on this route — call free
Flight time details
1,618 miles nonstop takes roughly 3h 38m gate to gate, flying southwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1.5-hour time set-back when reading arrival times on your ticket.
The two airports
- CEI — Chiang Rai International Airport · Chiang Rai, Thailand
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
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 CEI
- THL · Tachileik Airport37 mi away
- HOE · Ban Huoeisay Airport42 mi away
- MOG · Mong Hsat Airport56 mi away
- KET · Kengtung Airport95 mi away
Near RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Frequently asked questions
How far is CEI from RML?
The flight distance from Chiang Rai (CEI) to Colombo (RML) is 1,618 miles (2,605 km, 1,406 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from CEI to RML?
A nonstop flight takes about 3h 38m 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 Chiang Rai and Colombo?
Colombo is 1.5 hours behind Chiang Rai.
What is the cheapest way to fly from CEI to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on CEI–RML that never appear on search engines, with no booking fees.