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ISN to IAH: distance & flight time
Williston (Sloulin Field International Airport) → Houston (George Bush Intercontinental Houston Airport)
1,332 mi
2,143 km · 1,157 nm
3h 22m
estimated nonstop flight time
Same time
time difference · heading south
See live ISN→IAH fares Phone-only fares on this route — call free
Flight time details
1,332 miles nonstop takes roughly 3h 22m 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
- IAH — George Bush Intercontinental Houston Airport · 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 IAH
- DWH · David Wayne Hooks Memorial Airport14 mi away
- IWS · West Houston Airport23 mi away
- AAP · Andrau Airpark23 mi away
- HOU · William P Hobby Airport24 mi away
Frequently asked questions
How far is ISN from IAH?
The flight distance from Williston (ISN) to Houston (IAH) is 1,332 miles (2,143 km, 1,157 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISN to IAH?
A nonstop flight takes about 3h 22m 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 IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISN–IAH that never appear on search engines, with no booking fees.