$546 Cheap Flights from St. Louis (STL) to Graz (GRZ)

View $546 flight on Fri, Aug 14, 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Graz (GRZ)

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Cheap Flights from St. Louis to Graz (STL-GRZ)

Prices were available within the past 7 days and start at $546 for one-way flights and $625 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Jan 12 - Wed, Jan 21
STL
St. Louis
GRZ
Graz
$625 Roundtrip, found 6 days ago
$625
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jan 12 from St. Louis to Graz, returning Wed, Jan 21, priced at $625 found 6 days ago
Air Canada
Thu, Jan 15 - Wed, Jan 28
STL
St. Louis
GRZ
Graz
$628 Roundtrip, found 6 days ago
$628
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Jan 15 from St. Louis to Graz, returning Wed, Jan 28, priced at $628 found 6 days ago
United
Fri, Jan 9 - Fri, Jan 23
STL
St. Louis
GRZ
Graz
$633 Roundtrip, found 6 days ago
$633
Roundtrip
found 6 days ago
Select United flight, departing Fri, Jan 9 from St. Louis to Graz, returning Fri, Jan 23, priced at $633 found 6 days ago
United
Sun, Jan 18 - Sat, Jan 31
STL
St. Louis
GRZ
Graz
$634 Roundtrip, found 6 days ago
$634
Roundtrip
found 6 days ago
Select United flight, departing Sun, Jan 18 from St. Louis to Graz, returning Sat, Jan 31, priced at $634 found 6 days ago
United
Mon, Jan 12 - Mon, Jan 26
STL
St. Louis
GRZ
Graz
$635 Roundtrip, found 6 days ago
$635
Roundtrip
found 6 days ago
Select United flight, departing Mon, Jan 12 from St. Louis to Graz, returning Mon, Jan 26, priced at $635 found 6 days ago
United
Sat, Jan 10 - Sun, Jan 25
STL
St. Louis
GRZ
Graz
$636 Roundtrip, found 6 days ago
$636
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jan 10 from St. Louis to Graz, returning Sun, Jan 25, priced at $636 found 6 days ago
United
Sun, Jan 25 - Mon, Feb 9
STL
St. Louis
GRZ
Graz
$637 Roundtrip, found 6 days ago
$637
Roundtrip
found 6 days ago
Select United flight, departing Sun, Jan 25 from St. Louis to Graz, returning Mon, Feb 9, priced at $637 found 6 days ago
Air Canada
Thu, Jan 15 - Mon, Jan 26
STL
St. Louis
GRZ
Graz
$638 Roundtrip, found 6 days ago
$638
Roundtrip
found 6 days ago
Select Air Canada flight, departing Thu, Jan 15 from St. Louis to Graz, returning Mon, Jan 26, priced at $638 found 6 days ago
United
Sat, Jan 10 - Sat, Jan 31
STL
St. Louis
GRZ
Graz
$640 Roundtrip, found 6 days ago
$640
Roundtrip
found 6 days ago
Select United flight, departing Sat, Jan 10 from St. Louis to Graz, returning Sat, Jan 31, priced at $640 found 6 days ago
Lufthansa
Fri, Jan 9 - Mon, Jan 19
STL
St. Louis
GRZ
Graz
$659 Roundtrip, found 6 days ago
$659
Roundtrip
found 6 days ago
Select Lufthansa flight, departing Fri, Jan 9 from St. Louis to Graz, returning Mon, Jan 19, priced at $659 found 6 days ago
Austrian Airlines
Tue, Jan 6 - Sun, Jan 11
STL
St. Louis
GRZ
Graz
$910 Roundtrip, found 6 days ago
$910
Roundtrip
found 6 days ago
Select Austrian Airlines flight, departing Tue, Jan 6 from St. Louis to Graz, returning Sun, Jan 11, priced at $910 found 6 days ago

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ) cost?
Get a cheap one-way flight from $546 or cheap return flight from $625 from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ)?
The cheapest month to fly from STL to GRZ is January, when demand is low. Off-peak season is typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ)?
Use the filters on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to GRZ. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ)?
There are no daily direct flights from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ). But you can choose flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way in no time at all.
What day of the week has the most flights from STL to GRZ?
Usually you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can vary based on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures after this hour are on average 22% more likely to be canceled.**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 Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ) last-minute?
Last-minute fares from STL to GRZ are typically more expensive. To lock in the lowest rates, start looking for flights as soon as possible. That said, if your travel plans are flexible, it's possible to land a cheap ticket right before you leave.
Is it cheaper to book a STL to GRZ flight and hotel package?
Opting for a STL to GRZ flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels in one place. Pick from our impressive range of stays and then add car rentals, flights and activities to your booking. Bundle it all together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Thalerhof Airport (GRZ)?
In most cases, you're able to reschedule or cancel your STL to GRZ flight. However, there may be additional charges, especially if you booked over 24 hours ago. Check your itinerary for the airline's fees and rules on flight changes, or if you want further information, go to our Customer Service portal.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Graz
Roundtrip price
$624
Distance
4959 mi

Book with confidence

St. Louis to Graz Flights

The cheapest times to fly from St. Louis to Graz

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 St. Louis to Graz are during the month of January. You can find some of the cheapest flights from St. Louis to Graz with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Graz

Sunday is one of the best days to book for cheap flights from St. Louis to Graz: 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 St. Louis to Graz

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 St. Louis to Graz in 2025. You can also book with separate airlines for your outbound and return journeys, from $546 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 St. Louis to Graz 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 St. Louis to Graz 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.

 

St. Louis to Graz Flights

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*Available to One Key members.