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GIU to ISN: distance & flight time
Sigiriya (Sigiriya Air Force Base) → Williston (Sloulin Field International Airport)
8,549 mi
13,759 km · 7,429 nm
17h 14m
estimated nonstop flight time
-10.5h
time difference · heading north
See live GIU→ISN fares Phone-only fares on this route — call free
Flight time details
8,549 miles nonstop takes roughly 17h 14m 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 set-back when reading arrival times on your ticket.
The two airports
- GIU — Sigiriya Air Force Base · Sigiriya, Sri Lanka
- ISN — Sloulin Field International Airport · Williston, 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 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
Near ISN
- SDY · Sidney - Richland Regional Airport41 mi away
- YEN · Estevan Airport78 mi away
- OLF · L M Clayton Airport89 mi away
- GDV · Dawson Community Airport90 mi away
Frequently asked questions
How far is GIU from ISN?
The flight distance from Sigiriya (GIU) to Williston (ISN) is 8,549 miles (13,759 km, 7,429 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GIU to ISN?
A nonstop flight takes about 17h 14m 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 Sigiriya and Williston?
Williston is 10.5 hours behind Sigiriya.
What is the cheapest way to fly from GIU to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GIU–ISN that never appear on search engines, with no booking fees.