Need help booking?
Unpublished phone-only deals available
ISN to AAP: distance & flight time
Williston (Sloulin Field International Airport) → Houston (Andrau Airpark)
1,345 mi
2,164 km · 1,169 nm
3h 23m
estimated nonstop flight time
Same time
time difference · heading south
See live ISN→AAP fares Phone-only fares on this route — call free
Flight time details
1,345 miles nonstop takes roughly 3h 23m gate to gate, flying south. Add 45–90 minutes per connection if there's no nonstop service. Both airports share the same local time, so schedules read exactly as flown.
The two airports
- ISN — Sloulin Field International Airport · Williston, United States
- AAP — Andrau Airpark · Houston, 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 AAP
- IAH · George Bush Intercontinental Houston Airport23 mi away
- SGR · Sugar Land Regional Airport8 mi away
- IWS · West Houston Airport8 mi away
- HOU · William P Hobby Airport19 mi away
Frequently asked questions
How far is ISN from AAP?
The flight distance from Williston (ISN) to Houston (AAP) is 1,345 miles (2,164 km, 1,169 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to AAP?
A nonstop flight takes about 3h 23m 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 cheapest way to fly from ISN to AAP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–AAP that never appear on search engines, with no booking fees.