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GTF to GIU: distance & flight time
Great Falls (Great Falls International Airport) → Sigiriya (Sigiriya Air Force Base)
8,535 mi
13,736 km · 7,417 nm
17h 12m
estimated nonstop flight time
+11.5h
time difference · heading north
See live GTF→GIU fares Phone-only fares on this route — call free
Flight time details
8,535 miles nonstop takes roughly 17h 12m 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
- GIU — Sigiriya Air Force Base · Sigiriya, 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 GIU
- HIM · Hingurakgoda Air Force Base18 mi away
- ACJ · Anuradhapura Air Force Base31 mi away
- TRR · China Bay Airport51 mi away
- BTC · Batticaloa Airport67 mi away
Frequently asked questions
How far is GTF from GIU?
The flight distance from Great Falls (GTF) to Sigiriya (GIU) is 8,535 miles (13,736 km, 7,417 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GTF to GIU?
A nonstop flight takes about 17h 12m 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 Sigiriya?
Sigiriya is 11.5 hours ahead of Great Falls.
What is the cheapest way to fly from GTF to GIU?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GTF–GIU that never appear on search engines, with no booking fees.