Need help booking?
Unpublished phone-only deals available
ISN to FLZ: distance & flight time
Williston (Sloulin Field International Airport) → Sibolga (Dr Ferdinand Lumban Tobing Airport)
8,743 mi
14,071 km · 7,598 nm
17h 37m
estimated nonstop flight time
+12h
time difference · heading northwest
See live ISN→FLZ fares Phone-only fares on this route — call free
Flight time details
8,743 miles nonstop takes roughly 17h 37m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12-hour time gain when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- FLZ — Dr Ferdinand Lumban Tobing Airport · Sibolga, Indonesia
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 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
Near FLZ
- AEG · Aek Godang Airport39 mi away
- DTB · Silangit Airport49 mi away
- GNS · Binaka Airport86 mi away
- PPR · Pasir Pangaraan Airport113 mi away
Frequently asked questions
How far is ISN from FLZ?
The flight distance from Williston (ISN) to Sibolga (FLZ) is 8,743 miles (14,071 km, 7,598 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to FLZ?
A nonstop flight takes about 17h 37m 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 Williston and Sibolga?
Sibolga is 12 hours ahead of Williston.
What is the cheapest way to fly from ISN to FLZ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–FLZ that never appear on search engines, with no booking fees.