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STL to RML: distance & flight time
St. Louis (St Louis Lambert International Airport) → Colombo (Colombo Ratmalana Airport)
9,227 mi
14,849 km · 8,018 nm
18h 33m
estimated nonstop flight time
+10.5h
time difference · heading north
See live STL→RML fares Phone-only fares on this route — call free
Flight time details
9,227 miles nonstop takes roughly 18h 33m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 10.5-hour time gain when reading arrival times on your ticket.
The two airports
- STL — St Louis Lambert International Airport · St. Louis, United States
- 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 STL
- SUS · Spirit of St Louis Airport16 mi away
- ALN · St Louis Regional Airport20 mi away
- BLV · Scott AFB/Midamerica Airport32 mi away
- SPI · Abraham Lincoln Capital Airport84 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 STL from RML?
The flight distance from St. Louis (STL) to Colombo (RML) is 9,227 miles (14,849 km, 8,018 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from STL to RML?
A nonstop flight takes about 18h 33m 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 St. Louis and Colombo?
Colombo is 10.5 hours ahead of St. Louis.
What is the cheapest way to fly from STL to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on STL–RML that never appear on search engines, with no booking fees.