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RCA to ISN: distance & flight time
Rapid City (Ellsworth Air Force Base) → Williston (Sloulin Field International Airport)
280 mi
450 km · 243 nm
1h 12m
estimated nonstop flight time
+1h
time difference · heading north
See live RCA→ISN fares Phone-only fares on this route — call free
Flight time details
280 miles nonstop takes roughly 1h 12m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time gain when reading arrival times on your ticket.
The two airports
- RCA — Ellsworth Air Force Base · Rapid City, United States
- 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 RCA
- RAP · Rapid City Regional Airport7 mi away
- SPF · Black Hills Airport-Clyde Ice Field41 mi away
- CDR · Chadron Municipal Airport90 mi away
- GCC · Gillette Campbell County Airport121 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 RCA from ISN?
The flight distance from Rapid City (RCA) to Williston (ISN) is 280 miles (450 km, 243 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RCA to ISN?
A nonstop flight takes about 1h 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 Rapid City and Williston?
Williston is 1 hour ahead of Rapid City.
What is the cheapest way to fly from RCA to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RCA–ISN that never appear on search engines, with no booking fees.