Need help booking?
Unpublished phone-only deals available
GTF to KCT: distance & flight time
Great Falls (Great Falls International Airport) → Koggala (Koggala Airport)
8,674 mi
13,959 km · 7,537 nm
17h 28m
estimated nonstop flight time
+11.5h
time difference · heading north
See live GTF→KCT fares Phone-only fares on this route — call free
Flight time details
8,674 miles nonstop takes roughly 17h 28m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 11.5-hour time gain when reading arrival times on your ticket.
The two airports
- GTF — Great Falls International Airport · Great Falls, United States
- KCT — Koggala Airport · Koggala, 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 GTF
- HLN · Helena Regional Airport67 mi away
- CTB · Cut Bank International Airport91 mi away
- LWT · Lewistown Municipal Airport94 mi away
- HVR · Havre City County Airport104 mi away
Near KCT
- HRI · Mattala Rajapaksa International Airport59 mi away
- RML · Colombo Ratmalana Airport65 mi away
- WRZ · Weerawila Airport65 mi away
- CMB · Bandaranaike International Colombo Airport87 mi away
Frequently asked questions
How far is GTF from KCT?
The flight distance from Great Falls (GTF) to Koggala (KCT) is 8,674 miles (13,959 km, 7,537 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GTF to KCT?
A nonstop flight takes about 17h 28m 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 Great Falls and Koggala?
Koggala is 11.5 hours ahead of Great Falls.
What is the cheapest way to fly from GTF to KCT?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GTF–KCT that never appear on search engines, with no booking fees.