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SIN to ISN: distance & flight time
Singapore (Singapore Changi Airport) → Williston (Sloulin Field International Airport)
8,634 mi
13,895 km · 7,503 nm
17h 24m
estimated nonstop flight time
-13h
time difference · heading north
See live SIN→ISN fares Phone-only fares on this route — call free
Flight time details
8,634 miles nonstop takes roughly 17h 24m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 13-hour time set-back when reading arrival times on your ticket.
The two airports
- SIN — Singapore Changi Airport · Singapore, Singapore
- 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 SIN
- QPG · Paya Lebar Air Base6 mi away
- XSP · Seletar Airport10 mi away
- BTH · Hang Nadim International Airport18 mi away
- TGA · Tengah Air Base20 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 SIN from ISN?
The flight distance from Singapore (SIN) to Williston (ISN) is 8,634 miles (13,895 km, 7,503 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SIN to ISN?
A nonstop flight takes about 17h 24m 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 Singapore and Williston?
Williston is 13 hours behind Singapore.
What is the cheapest way to fly from SIN to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SIN–ISN that never appear on search engines, with no booking fees.