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DCA to ISN: distance & flight time
Washington (Ronald Reagan Washington National Airport) → Williston (Sloulin Field International Airport)
1,471 mi
2,367 km · 1,278 nm
3h 40m
estimated nonstop flight time
-1h
time difference · heading northwest
See live DCA→ISN fares Phone-only fares on this route — call free
Flight time details
1,471 miles nonstop takes roughly 3h 40m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 1-hour time set-back when reading arrival times on your ticket.
The two airports
- DCA — Ronald Reagan Washington National Airport · Washington, 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 DCA
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 DCA from ISN?
The flight distance from Washington (DCA) to Williston (ISN) is 1,471 miles (2,367 km, 1,278 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from DCA to ISN?
A nonstop flight takes about 3h 40m 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 Washington and Williston?
Williston is 1 hour behind Washington.
What is the cheapest way to fly from DCA to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on DCA–ISN that never appear on search engines, with no booking fees.