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HYC to ISN: distance & flight time
Wycombe (Wycombe Air Park) → Williston (Sloulin Field International Airport)
4,181 mi
6,729 km · 3,634 nm
8h 40m
estimated nonstop flight time
-6h
time difference · heading northwest
See live HYC→ISN fares Phone-only fares on this route — call free
Flight time details
4,181 miles nonstop takes roughly 8h 40m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 6-hour time set-back when reading arrival times on your ticket.
The two airports
- HYC — Wycombe Air Park · Wycombe, United Kingdom
- 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 HYC
- LHR · London Heathrow Airport18 mi away
- LGW · London Gatwick Airport42 mi away
- BEX · RAF Benson12 mi away
- NHT · RAF Northolt17 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 HYC from ISN?
The flight distance from Wycombe (HYC) to Williston (ISN) is 4,181 miles (6,729 km, 3,634 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from HYC to ISN?
A nonstop flight takes about 8h 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 Wycombe and Williston?
Williston is 6 hours behind Wycombe.
What is the cheapest way to fly from HYC to ISN?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on HYC–ISN that never appear on search engines, with no booking fees.