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RML to GAI: distance & flight time
Colombo (Colombo Ratmalana Airport) → Gaithersburg (Montgomery County Airpark)
8,936 mi
14,381 km · 7,765 nm
17h 59m
estimated nonstop flight time
-9.5h
time difference · heading northwest
See live RML→GAI fares Phone-only fares on this route — call free
Flight time details
8,936 miles nonstop takes roughly 17h 59m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 9.5-hour time set-back when reading arrival times on your ticket.
The two airports
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
- GAI — Montgomery County Airpark · Gaithersburg, United States
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 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
Near GAI
Frequently asked questions
How far is RML from GAI?
The flight distance from Colombo (RML) to Gaithersburg (GAI) is 8,936 miles (14,381 km, 7,765 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to GAI?
A nonstop flight takes about 17h 59m 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 Colombo and Gaithersburg?
Gaithersburg is 9.5 hours behind Colombo.
What is the cheapest way to fly from RML to GAI?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–GAI that never appear on search engines, with no booking fees.