$395 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 9/2. 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
Vienna1 stop$830
Salzburg
Salzburg2 stops$1,153
Innsbruck
Innsbruck2 stops$1,453
Vienna
Vienna1 stop$830
Salzburg
Salzburg2 stops$1,153
Innsbruck
Innsbruck2 stops$1,453

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

Tue, Aug 25 - Wed, Oct 7
Multiple Airlines Logo
1:18 pm - 8:15 am
STL
-
VIE
11h 57m
1 stop
Multiple Airlines Logo
8:00 am - 1:25 pm
VIE
-
STL
12h 25m
1 stop
$830Multiple Airlines
Tue, Aug 25 - Wed, Oct 7
Multiple Airlines Logo
1:18 pm - 8:15 am
STL
-
VIE
11h 57m
1 stop
Multiple Airlines Logo
8:00 am - 3:38 pm
VIE
-
STL
14h 38m
2 stops
$840Multiple Airlines
Tue, Aug 25 - Wed, Oct 7
Lufthansa Logo
6:55 pm - 4:35 pm
STL
-
VIE
14h 40m
2 stops
Lufthansa Logo
8:00 am - 3:38 pm
VIE
-
STL
14h 38m
2 stops
$868Lufthansa
Thu, Oct 1 - Sat, Oct 31
United Airlines Logo
6:40 am - 8:15 am
STL
-
VIE
18h 35m
1 stop
United Airlines Logo
10:35 am - 3:18 pm
VIE
-
STL
34h 43m
2 stops
$972United Airlines
Thu, Oct 1 - Sat, Oct 31
United Airlines Logo
6:40 am - 8:10 am
STL
-
VIE
18h 30m
2 stops
United Airlines Logo
10:35 am - 3:18 pm
VIE
-
STL
34h 43m
2 stops
$976United Airlines
Thu, Oct 1 - Sat, Oct 31
United Airlines Logo
6:40 am - 8:15 am
STL
-
VIE
18h 35m
1 stop
United Airlines Logo
10:35 am - 4:30 pm
VIE
-
STL
35h 55m
1 stop
$985United Airlines
Thu, Oct 1 - Sat, Oct 17
Air Canada Logo
8:55 am - 8:20 am
STL
-
VIE
16h 25m
1 stop
Air Canada Logo
10:30 am - 8:00 pm
VIE
-
STL
16h 30m
1 stop
$989Air Canada
Thu, Oct 1 - Sat, Oct 17
American Airlines Logo
8:07 pm - 10:40 pm
STL
-
VIE
19h 33m
2 stops
American Airlines Logo
11:35 am - 11:25 pm
VIE
-
STL
18h 50m
2 stops
$992American Airlines
Thu, Jul 9 - Tue, Sep 22
Lufthansa Logo
12:23 pm - 5:15 pm
STL
-
VIE
21h 52m
2 stops
Lufthansa Logo
8:00 am - 1:25 pm
VIE
-
STL
12h 25m
1 stop
$1,007Lufthansa
Fri, Jun 12 - Fri, Jun 19
Air Canada Logo
8:40 am - 1:35 pm
STL
-
SZG
21h 55m
2 stops
Air Canada Logo
6:10 am - 8:25 pm
SZG
-
STL
21h 15m
2 stops
$1,307Air Canada
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 $1,093 and $783 respectively.

Good to know

Low seasonFebruary
Cheapest flight$395
Best time to beat the crowds with an average 45% drop in price.
Most popular time to fly with an average 43% 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 9678 reviews
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
7.7Boarding
Airline reviews

Some crew were unfriendly or in some cases just straight up rude.

6.0 GoodAnonymous, Apr 2026
SFO - YVR
Read more United Airlines reviews

Some crew were unfriendly or in some cases just straight up rude.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Was great in general, try to respect time and excuses when slight changes have been made, appreciated!

A long delay. Don't travel late in the day.

Super friendly with lots of drink options an entertainment. Friendly crew.

Standard flight with a drinks and a snack- overall very quick flight. The flight attendants were very strict, bordered on rude.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

United Airline crews were very friendly and very attentive. 12 hours flight was gone like in a shorter one.

Delayed - weather wasn't bad at either end. Also sat on tarmac in ORD.

Food was surprisingly delicious. Space in the seat is horrible when the seating front is reclined. Movie offerings were terrible. Crew was friendly and helpful.

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.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

the check-in lady at ORD was extremely rude and unprofessional. very disappointed as it was supposed to be a celebration for my wife's birthday and it really put a damper on things. if i wanted to be treated like trash, i would have flown Economy! (as opposed to business class)

My original flight was cancelled and then rebooked four hours later on a recovery flight, but I was checked in as stanby and had no seats so as a family of four we were concerned about not being seated altogether. Our flight then got delayed by another 1.5 hours and when seats were assigned at the gate, three of the four of us were together and we could get my wife closer, they offered no assistance.

I bought a ticket from Kayak. When I got to the airport, the was no ticket. I had to pay 5X to get to my destination. No response received from Kayak. I will NEVER use them again.

Flight was delayed by several hours and then cancelled due to weather. But Staff was very helpful getting me on a different flight. United should offer food coupons and tooth brush and paste for stranded passengers

I upgraded to the business class cabin. It was the poorest business class I have ever experienced. No access to any business lounge in Tampa airport. Seats are not comfortable. I had a window seat and had to step/crawl over the next seat. Food was mediocre and service below average for business class. Bathroom location was ridiculous. No place to wait. I cannot believe I paid this kind of money and will never fly Lufthansa Discover again. They really should reimburse me somehow.

Boarding was disorganized. The door to one to the toilets wouldn’t lock. The plane was shockingly cramped, and clearly used for domestic flights due to the menus for items to sell domestic travelers. United should be ashamed of its small seats, tiny unclean toilets, and money grubbing stance toward services, compared to Lufthansa, Emirates, and most international carriers United is awful.

Was never allowed on and not refunded the full amount of the ticket plus charged a $300 processing fee.

Terrible. Lost our luggage for 4 days. Did not advise passengers there was a strike in Barcelona Airport and had zero personnel on hand at airport to advise passengers on where to go to file claims. We had to fend for ourselves. No assistance at all other than an online claims submission process that we had to find out about on our own.

Lufthansa cancelled our flight from Los Angeles to Naples Italy on March 10 for scheduled flight on March 12 Very stressful experience trying to arrange alternatives. Will never fly again with Lufthansa

Everything could have been better. What needed to be wrong with United went wrong

The staff was bit rude when I asked for an extra drink after one beer, asked for one wine glass.

Very good, i got two seats for myself, and was comfortable with the blanket i got

I hated the FRA Airport. Confusing signage, including the path to Immigration and Security It seems that the airport grew haphazardly over the years. I have been through multiple WW Hubs with much better experiences.

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

Information on your arrival and departure airports