$391 Find Cheap Flights from St. Louis to Austria

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Austria departing on 9/15. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from St. Louis to Austria

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Vienna
Vienna2 stops$795
Salzburg
Salzburg2 stops$1,062
Vienna
Vienna2 stops$795
Salzburg
Salzburg2 stops$1,062

Book Cheap St. Louis to Austria Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Austria that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Austria

Mon, Sep 14 - Fri, Sep 18
Scandinavian Airlines Logo
12:00 pm - 9:35 am
STL
-
VIE
38h 35m
2 stops
Scandinavian Airlines Logo
8:00 pm - 11:36 pm
VIE
-
STL
34h 36m
2 stops
$795Scandinavian Airlines
Wed, Nov 11 - Sat, Nov 21
United Airlines Logo
7:30 am - 8:00 am
STL
-
VIE
17h 30m
1 stop
United Airlines Logo
10:35 am - 12:20 pm
VIE
-
STL
32h 45m
2 stops
$807United Airlines
Wed, Nov 11 - Sat, Nov 21
Austrian Airlines Logo
6:30 am - 8:00 am
STL
-
VIE
18h 30m
1 stop
Austrian Airlines Logo
10:30 am - 11:25 pm
VIE
-
STL
19h 55m
1 stop
$823Austrian Airlines
Mon, Sep 14 - Fri, Sep 18
Austrian Airlines Logo
12:59 pm - 8:15 am
STL
-
VIE
12h 16m
1 stop
Austrian Airlines Logo
10:45 am - 11:38 pm
VIE
-
STL
19h 53m
1 stop
$836Austrian Airlines
Tue, Sep 15 - Wed, Sep 23
Multiple Airlines Logo
2:40 pm - 12:20 pm
STL
-
VIE
14h 40m
2 stops
Multiple Airlines Logo
11:00 am - 6:41 pm
VIE
-
STL
14h 41m
1 stop
$843Multiple Airlines
Tue, Sep 15 - Wed, Sep 23
Air Canada Logo
12:10 pm - 9:10 am
STL
-
VIE
38h 00m
2 stops
Air Canada Logo
10:30 am - 12:13 pm
VIE
-
STL
32h 43m
2 stops
$847Air Canada
Mon, Sep 14 - Fri, Sep 18
Air Canada Logo
8:55 am - 8:20 am
STL
-
VIE
16h 25m
1 stop
Air Canada Logo
10:30 am - 12:03 pm
VIE
-
STL
32h 33m
2 stops
$855Air Canada
Mon, Sep 14 - Fri, Sep 18
Lufthansa Logo
12:59 pm - 12:35 pm
STL
-
VIE
16h 36m
2 stops
Lufthansa Logo
6:00 am - 1:25 pm
VIE
-
STL
14h 25m
1 stop
$858Lufthansa
Tue, Aug 11 - Sun, Aug 16
Multiple Airlines Logo
1:00 pm - 1:35 pm
STL
-
SZG
17h 35m
2 stops
Multiple Airlines Logo
6:00 am - 8:07 pm
SZG
-
STL
21h 07m
2 stops
$1,062Multiple Airlines
Tue, Aug 11 - Sun, Aug 16
Lufthansa Logo
3:30 pm - 1:35 pm
STL
-
SZG
15h 05m
1 stop
Lufthansa Logo
6:00 am - 8:07 pm
SZG
-
STL
21h 07m
2 stops
$1,063Lufthansa
Booking Insights

KAYAK's insights & trends for St. Louis to Austria flights

Get data-powered insights and trends into flights from St. Louis to Austria to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from St. Louis to Austria?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Austria, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from St. Louis to Austria is March, when tickets cost $471 (return) on average. On the other hand, the most expensive months are June and August, when the average cost of round-trip tickets is $1,134 and $812 respectively.

Good to know

Low seasonFebruary
Cheapest flight$391
Best time to beat the crowds with an average 42% drop in price.
Most popular time to fly with an average 52% increase in price.
Flight from St. Louis to Vienna

FAQs - booking Austria flights

  • How does KAYAK find such low prices on flights from St. Louis to Austria?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Austria.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Austria?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from St. Louis to Austria is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Austria?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from St. Louis to Austria with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Austria?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from St. Louis to Austria up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 3 airlines serving from St. Louis to Austria

 
Need help choosing which airline to fly with from St. Louis to Austria? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9771 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

10.0 ExcellentAnonymous, Jun 2026
GSP - IAH
Read more United Airlines reviews

Even through the flight was delayed due to storms near IAH The flight was great! The crew was so hospitable and professional

I flew from Santa Fe to Denver to catch a flight to London and the transfer of my luggage on arrival at Denver to the London flight worked perfectly. The crew on the ground and on board for the London flight were so friendly and efficient.

Boarded early; and arrived home 40 mins early. After a long flight, it’s nice to be back home early. These flights have no amenities; no snacks. So need to bring your own

Boarded early, left early, arrived 40 mins early! A win win for me!

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

These airplanes should be illegal. The seats are two tight, it is a safety issue. Wheelchair support was ridiculously slow. We almost missed our flight.

It was a short flight so I was expecting too much

Horrifying Almost 2 million miles. Bring your own food and drink. One coffee or drink every three hours. Have to order meals on app more than 24 hours ahead Tiny and dirty bathrooms

Flight was delayed but more than 90 minutes. This caused me to miss my available windows for pick-up by a friend. I had to pay $125 for an uber back home from the airport which was an added expense that I had not budgeted for my trip. Staff was friendly.

I felt scammed. The priced advertised was different than what I paid. I paid the whole some online. I then got a call 20 minutes later saying I need to paid 70 more person. She said the price online is not the guaranteed price.

No TV on the flight. The charging outlet was not working. No food, even a sandwich. The served orange was poor quality.

Selected seats 5 months prior to date. Had email confirmation and seats were not honoured. Family did not sit together

Loved and was pleasantly surprised by the food!! Request Lufthansa to help transiting passengers at Munich (confusion whether to go thru passport control or not).

The flight was comfortable and the staff were helpful and friendly. However, we did not know we were flying PAL until we arrived in Canada, so it was a bit disconcerting. In addition, which port we were leaving from was confusing.

They did not let us board because one member needed a transit visa, which was not evident at the time of ticket purchase.

I was charge a baggage checking fee $68!! I volunteered to check my duffle bag which usually goes under my seat!

I did not like anything because the flight was cancelled yesterday and I did not get to arrive on time in Toronto as I was rebooked with another airline. This caused me to be really stressed out as I am an individual with back injury and to be forced to stay longer in an airport to accommodate a change of airline and the transfers associated with it Due to this I am probably not going to book through your website to eliminate this potentially chaos in the future

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

Put me on standby; flight was late; missed my connecting flight; disaster

Flight attendants were fine, seats a bit hard but I use a cushion for extra support. The only issue was it was a bit too cool and I needed to ask for and received and extra blanket. I survived!!!

Very few things and/or people are excellent. It was very good.

Extremely uncomfortable seats. Experience was like a Frontier Airlines flight. Would not fly it again.

Very, very tight legroom. They must’ve jammed in an additional few rows of seat seating. Denver to Munich was the least legroom I’ve ever had on any flight, let alone a multi hour international journey. I will not take that flight again.

In my first flight with Air Canada we sat in the plane for 4:00pm to 6:30pm. Finally we were asked to get off the plane and we were told the flight was cancelled after 7:00pm There was o clear explanation of what was the problem. I was booked without my permission on a Delta Flight at 7:30pm that was leaving at 8:00pm and I still had to go get my luggage(my final destination was Rome with one stop in Toronto. The luggage claim for Canada was closed so had to return to finally get it on the luggage belt.. Of course I missed the Delta flight and all the next day flights were booked. I also lost what I paid for my stay in Rome because I did nt cancel in time. A complete nightmare.

Good food, overall very comfy. The flight was full so obviously not optimal, but it is what it is.

Perfect airline, super friendly, great service, tasty food. Would fly again.

Parents with permanently crying baby on board. Neither parents nor crew did anything to calm the baby. The food was extremely disappointing. Seafood stew was very, very small! Not even appetizer size! Seat had a gap in the back. Had to use a pillow to fill it.

Food choices limited & not enticing Seats quite uncomfortable & difficult to control

Everything you need to know for your flight from St. Louis to Austria

Information on your arrival and departure airports