$1,376 Cheap Flights from Graz (GRZ) to Houston (IAH)

View $1,376 flight on Fri, Sep 12, 2025Opens in a new window

Popular airlines from Graz (GRZ) to George Bush Intercontinental Airport (IAH)

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Cheap Flights from Graz to Houston (GRZ-IAH)

Prices were available within the past 7 days and start at $1,376 for one-way flights and $1,109 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Dolomiti
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,109 Roundtrip, found 8 hours ago
$1,109
Roundtrip
found 8 hours ago
Select Air Dolomiti flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,109 found 8 hours ago
Lufthansa
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,113 Roundtrip, found 8 hours ago
$1,113
Roundtrip
found 8 hours ago
Select Lufthansa flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,113 found 8 hours ago
Air Dolomiti
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,115 Roundtrip, found 8 hours ago
$1,115
Roundtrip
found 8 hours ago
Select Air Dolomiti flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,115 found 8 hours ago
Lufthansa
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,117 Roundtrip, found 8 hours ago
$1,117
Roundtrip
found 8 hours ago
Select Lufthansa flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,117 found 8 hours ago
Austrian Airlines
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,118 Roundtrip, found 8 hours ago
$1,118
Roundtrip
found 8 hours ago
Select Austrian Airlines flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,118 found 8 hours ago
Air Dolomiti
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,120 Roundtrip, found 8 hours ago
$1,120
Roundtrip
found 8 hours ago
Select Air Dolomiti flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,120 found 8 hours ago
Austrian Airlines
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,120 Roundtrip, found 8 hours ago
$1,120
Roundtrip
found 8 hours ago
Select Austrian Airlines flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,120 found 8 hours ago
Air Dolomiti
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,122 Roundtrip, found 8 hours ago
$1,122
Roundtrip
found 8 hours ago
Select Air Dolomiti flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,122 found 8 hours ago
Austrian Airlines
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,122 Roundtrip, found 8 hours ago
$1,122
Roundtrip
found 8 hours ago
Select Austrian Airlines flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,122 found 8 hours ago
Air Canada
Sat, Oct 18 - Sat, Oct 25
GRZ
Graz
IAH
Houston
$1,204 Roundtrip, found 8 hours ago
$1,204
Roundtrip
found 8 hours ago
Select Air Canada flight, departing Sat, Oct 18 from Graz to Houston, returning Sat, Oct 25, priced at $1,204 found 8 hours ago
Flights from Graz (GRZ) to Houston (IAH)
Origin airport
Graz
Destination airport
George Bush Intercontinental
Roundtrip price
$1,108
Distance
5598 mi

Graz to Houston Flights

The cheapest times to fly from Graz to Houston

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Graz to Houston are during the month of October. You can find some of the cheapest flights from Graz to Houston with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Graz to Houston

Sunday is one of the best days to book for cheap flights from Graz to Houston: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Graz to Houston

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Graz to Houston in 2025. You can also book with separate airlines for your outbound and return journeys, from $1,376 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Graz to Houston flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Graz to Houston airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH) cost?
Snag a cheap one-way flight from $1,376 or cheap return flight from $1,109 from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH)?
October is the least expensive month to fly from GRZ to IAH. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH)?
Expedia's filter tool lets you easily compare different airlines, flight durations and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to find the carrier with the cheapest GRZ to IAH flight.
How many flights per day from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH)?
You'll need to hop on a flight with a layover if you're traveling from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from GRZ to IAH?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH)?
Book a flight from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH) that takes off before 3 PM to reduce the likelihood of delays. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH) last-minute?
Last-minute fares from GRZ to IAH are typically more expensive. For the lowest prices, start looking for flights well in advance. That being said, if your travel plans are flexible, you may score a cheap fare right before your journey.
Is it cheaper to book a GRZ to IAH flight and hotel package?
Compared with arranging flights and hotels separately, booking a GRZ to IAH flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one easy place takes the hassle out of planning your trip. Simply secure your flights and select from our extensive range of hotels, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from Thalerhof Airport (GRZ) to George Bush Intercontinental Airport (IAH)?
Typically, you can cancel or modify your GRZ to IAH flight. However, additional fees may apply, especially if you booked more than 24 hours ago. Check your itinerary for the airline's rules and fees on flight changes, or if you'd like further information, visit our Customer Service portal.

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*Available to One Key members.