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GRZ to IAH: distance & flight time
Graz (Graz Airport) → Houston (George Bush Intercontinental Houston Airport)
5,599 mi
9,011 km · 4,865 nm
11h 27m
estimated nonstop flight time
-7h
time difference · heading northwest
See live GRZ→IAH fares Phone-only fares on this route — call free
Flight time details
5,599 miles nonstop takes roughly 11h 27m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 7-hour time set-back when reading arrival times on your ticket.
The two airports
- GRZ — Graz Airport · Graz, Austria
- 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 GRZ
- MBX · Maribor Airport37 mi away
- KLU · Klagenfurt Airport57 mi away
- LJU · Ljubljana Jože Pučnik Airport71 mi away
- SOB · Sármellék International Airport84 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 GRZ from IAH?
The flight distance from Graz (GRZ) to Houston (IAH) is 5,599 miles (9,011 km, 4,865 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from GRZ to IAH?
A nonstop flight takes about 11h 27m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
Are there nonstop flights from GRZ to IAH?
Nonstop service on GRZ–IAH depends on the season and the day of week. Run the fare search on this page with the nonstop filter applied to see current direct options; when there is no nonstop, a single connection through a carrier hub adds roughly 2–4 hours to the 11h 27m nonstop estimate.
What is the time difference between Graz and Houston?
Houston is 7 hours behind Graz.
What is the cheapest way to fly from GRZ to IAH?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on GRZ–IAH that never appear on search engines, with no booking fees.
Why are some GRZ to IAH fares phone-only?
Consolidator contracts let us sell certain GRZ–IAH tickets below the price airlines permit us to publish online, so those fares can only be quoted over the phone. Call the travel desk and an agent will check phone-only inventory for your dates.