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LLY to ISN: distance & flight time
Mount Holly (South Jersey Regional Airport) → Williston (Sloulin Field International Airport)
1,528 mi
2,458 km · 1,327 nm
3h 28m
estimated nonstop flight time
-1h
time difference · heading northwest
See live LLY→ISN fares Phone-only fares on this route — call free
Flight time details
1,528 miles nonstop takes roughly 3h 28m 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
- LLY — South Jersey Regional Airport · Mount Holly, 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 LLY
- PHL · Philadelphia International Airport22 mi away
- PNE · Northeast Philadelphia Airport13 mi away
- WRI · Mc Guire Air Force Base14 mi away
- TTN · Trenton Mercer Airport23 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 LLY from ISN?
The flight distance from Mount Holly (LLY) to Williston (ISN) is 1,528 miles (2,458 km, 1,327 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from LLY to ISN?
A nonstop flight takes about 3h 28m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from LLY to ISN?
Nonstop service on LLY–ISN depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 3h 28m nonstop estimate.
What is the time difference between Mount Holly and Williston?
Williston is 1 hour behind Mount Holly.
What is the cheapest way to fly from LLY to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on LLY–ISN that never appear on search engines, with no booking fees.
Why are some LLY to ISN fares phone-only?
Consolidator contracts let us sell certain LLY–ISN tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.