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ISM to IAH: distance & flight time
Kissimmee (Kissimmee Gateway Airport) → Houston (George Bush Intercontinental Houston Airport)
847 mi
1,363 km · 736 nm
2h 18m
estimated nonstop flight time
-1h
time difference · heading west
See live ISM→IAH fares Phone-only fares on this route — call free
Flight time details
847 miles nonstop takes roughly 2h 18m gate to gate, flying west. 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
- ISM — Kissimmee Gateway Airport · Kissimmee, 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 ISM
- MCO · Orlando International Airport12 mi away
- ORL · Orlando Executive Airport19 mi away
- GIF · Winter Haven Regional Airport - Gilbert Field25 mi away
- TPA · Tampa International Airport70 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 ISM from IAH?
The flight distance from Kissimmee (ISM) to Houston (IAH) is 847 miles (1,363 km, 736 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from ISM to IAH?
A nonstop flight takes about 2h 18m 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 Kissimmee and Houston?
Houston is 1 hour behind Kissimmee.
What is the cheapest way to fly from ISM to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on ISM–IAH that never appear on search engines, with no booking fees.