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PSE to ISN: distance & flight time
Ponce (Mercedita Airport) → Williston (Sloulin Field International Airport)
2,942 mi
4,735 km · 2,557 nm
6h 14m
estimated nonstop flight time
-1h
time difference · heading northwest
See live PSE→ISN fares Phone-only fares on this route — call free
Flight time details
2,942 miles nonstop takes roughly 6h 14m 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
- PSE — Mercedita Airport · Ponce, Puerto Rico
- 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 PSE
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 PSE from ISN?
The flight distance from Ponce (PSE) to Williston (ISN) is 2,942 miles (4,735 km, 2,557 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from PSE to ISN?
A nonstop flight takes about 6h 14m 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 Ponce and Williston?
Williston is 1 hour behind Ponce.
What is the cheapest way to fly from PSE to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on PSE–ISN that never appear on search engines, with no booking fees.