Need help booking?
Unpublished phone-only deals available
ISN to CJJ: distance & flight time
Williston (Sloulin Field International Airport) → Chongju (Cheongju International Airport/Cheongju Air Base (K-59/G-513))
5,781 mi
9,304 km · 5,024 nm
11h 48m
estimated nonstop flight time
+14h
time difference · heading northwest
See live ISN→CJJ fares Phone-only fares on this route — call free
Flight time details
5,781 miles nonstop takes roughly 11h 48m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- CJJ — Cheongju International Airport/Cheongju Air Base (K-59/G-513) · Chongju, South Korea
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 CJJ
- OSN · Osan Air Base37 mi away
- ICN · Incheon International Airport78 mi away
- SWU · Suwon Airport45 mi away
- YEC · Yecheon Airbase48 mi away
Frequently asked questions
How far is ISN from CJJ?
The flight distance from Williston (ISN) to Chongju (CJJ) is 5,781 miles (9,304 km, 5,024 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to CJJ?
A nonstop flight takes about 11h 48m 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 Chongju?
Chongju is 14 hours ahead of Williston.
What is the cheapest way to fly from ISN to CJJ?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–CJJ that never appear on search engines, with no booking fees.