Need help booking?
Unpublished phone-only deals available
ISN to PHL: distance & flight time
Williston (Sloulin Field International Airport) → Philadelphia (Philadelphia International Airport)
1,512 mi
2,434 km · 1,314 nm
3h 26m
estimated nonstop flight time
+1h
time difference · heading east
See live ISN→PHL fares Phone-only fares on this route — call free
Flight time details
1,512 miles nonstop takes roughly 3h 26m gate to gate, flying east. 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
- ISN — Sloulin Field International Airport · Williston, United States
- PHL — Philadelphia International Airport · Philadelphia, 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 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 PHL
- BBX · Wings Field18 mi away
- PNE · Northeast Philadelphia Airport19 mi away
- LLY · South Jersey Regional Airport22 mi away
- NXX · Willow Grove Naval Air Station/Joint Reserve Base23 mi away
Frequently asked questions
How far is ISN from PHL?
The flight distance from Williston (ISN) to Philadelphia (PHL) is 1,512 miles (2,434 km, 1,314 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to PHL?
A nonstop flight takes about 3h 26m 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 Philadelphia?
Philadelphia is 1 hour ahead of Williston.
What is the cheapest way to fly from ISN to PHL?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–PHL that never appear on search engines, with no booking fees.