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ISN to SEF: distance & flight time
Williston (Sloulin Field International Airport) → Sebring (Sebring Regional Airport)
1,865 mi
3,002 km · 1,621 nm
4h 7m
estimated nonstop flight time
+1h
time difference · heading southeast
See live ISN→SEF fares Phone-only fares on this route — call free
Flight time details
1,865 miles nonstop takes roughly 4h 7m gate to gate, flying southeast. 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
- SEF — Sebring Regional Airport · Sebring, 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 SEF
- AVO · Avon Park Executive Airport15 mi away
- MCO · Orlando International Airport67 mi away
- OBE · Okeechobee County Airport33 mi away
- TPA · Tampa International Airport81 mi away
Frequently asked questions
How far is ISN from SEF?
The flight distance from Williston (ISN) to Sebring (SEF) is 1,865 miles (3,002 km, 1,621 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to SEF?
A nonstop flight takes about 4h 7m 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 Sebring?
Sebring is 1 hour ahead of Williston.
What is the cheapest way to fly from ISN to SEF?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–SEF that never appear on search engines, with no booking fees.