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BWI to ISN: distance & flight time
Baltimore (Baltimore/Washington International Thurgood Marshall Airport) → Williston (Sloulin Field International Airport)
1,474 mi
2,373 km · 1,281 nm
3h 40m
estimated nonstop flight time
-1h
time difference · heading northwest
See live BWI→ISN fares Phone-only fares on this route — call free
Flight time details
1,474 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
- BWI — Baltimore/Washington International Thurgood Marshall Airport · Baltimore, 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 BWI
- DCA · Ronald Reagan Washington National Airport30 mi away
- IAD · Washington Dulles International Airport45 mi away
- FME · Tipton Airport8 mi away
- ANP · Lee Airport17 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 BWI from ISN?
The flight distance from Baltimore (BWI) to Williston (ISN) is 1,474 miles (2,373 km, 1,281 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BWI 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 Baltimore and Williston?
Williston is 1 hour behind Baltimore.
What is the cheapest way to fly from BWI to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BWI–ISN that never appear on search engines, with no booking fees.