$336 Find Cheap Flights from St. Louis to Austria - Compare and Save

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 10/5. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Austria

Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

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$753
Salzburg
Salzburg1 stop$965
Vienna
Vienna2 stops$753
Salzburg
Salzburg1 stop$965

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, Nov 3 - Wed, Nov 11
Multiple Airlines Logo
4:15 pm - 10:40 pm
STL
-
VIE
23h 25m
2 stops
Multiple Airlines Logo
6:00 am - 3:30 pm
VIE
-
STL
16h 30m
2 stops
$753Multiple Airlines
Mon, Nov 16 - Fri, Nov 20
United Airlines Logo
1:00 pm - 12:20 pm
STL
-
VIE
16h 20m
2 stops
United Airlines Logo
10:35 am - 12:20 pm
VIE
-
STL
32h 45m
2 stops
$754United Airlines
Mon, Nov 16 - Fri, Nov 20
United Airlines Logo
1:27 pm - 8:05 am
STL
-
VIE
11h 38m
1 stop
United Airlines Logo
10:35 am - 12:20 pm
VIE
-
STL
32h 45m
2 stops
$757United Airlines
Tue, Nov 3 - Wed, Nov 11
Multiple Airlines Logo
4:15 pm - 8:45 am
STL
-
VIE
33h 30m
1 stop
Multiple Airlines Logo
6:00 am - 3:30 pm
VIE
-
STL
16h 30m
2 stops
$761Multiple Airlines
Mon, Nov 2 - Wed, Nov 18
United Airlines Logo
3:15 pm - 12:20 pm
STL
-
VIE
14h 05m
2 stops
United Airlines Logo
7:00 am - 1:45 pm
VIE
-
STL
13h 45m
1 stop
$766United Airlines
Tue, Nov 3 - Wed, Nov 18
United Airlines Logo
7:30 am - 8:00 am
STL
-
VIE
17h 30m
1 stop
United Airlines Logo
7:00 am - 1:45 pm
VIE
-
STL
13h 45m
1 stop
$769United Airlines
Wed, Jul 22 - Wed, Jul 29
Lufthansa Logo
3:30 pm - 6:05 pm
STL
-
SZG
19h 35m
1 stop
Lufthansa Logo
6:00 am - 1:25 pm
SZG
-
STL
14h 25m
1 stop
$965Lufthansa
Wed, Jul 22 - Wed, Jul 29
Lufthansa Logo
3:30 pm - 9:35 am
STL
-
SZG
11h 05m
1 stop
Lufthansa Logo
6:00 am - 1:25 pm
SZG
-
STL
14h 25m
1 stop
$966Lufthansa
Mon, Jul 6 - Mon, Jul 13
Air Canada Logo
12:10 pm - 9:45 am
STL
-
SZG
14h 35m
2 stops
Air Canada Logo
10:40 am - 6:42 pm
SZG
-
STL
39h 02m
2 stops
$977Air Canada
Sun, Jul 5 - Sat, Jul 11
Air Canada Logo
8:55 am - 9:45 am
STL
-
SZG
17h 50m
2 stops
Air Canada Logo
10:30 am - 6:42 pm
SZG
-
STL
39h 12m
2 stops
$1,087Air 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 $1,134 and $812 respectively.

Good to know

Low seasonFebruary
Cheapest flight$336
Best time to beat the crowds with an average 48% drop in price.
Most popular time to fly with an average 37% 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 9801 reviews
6.6Food
7.7Boarding
7.3Comfort
7.1Entertainment
8.1Crew
Airline reviews

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

2.0 MediocreAnonymous, Jun 2026
SFO - HND
Read more United Airlines reviews

I paid for a confirmed upgraded aisle seat and was moved to a center seat in the back of the plane at the last minute.

Smooth travel. Immediate update prior flight delay so I can arrange myself properly without too rush.

Everything was the best it could be. Crew found me with pre- ordered food. Excellent experience!

Improve the food offerings and cabin seating. My wife would prefer to fly another airline, even with a connection for a more comfortable trip. A 737-8 should not be scheduled for a 6 hour segment, which turned into 7.5 hours due to the origin ground delay.

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

Read the fine print. This was my flight home. I booked my flight for the quickest way home. Had a carry-on and a personal item. Same as my outbound flight. Apparently I needed to pre-pay extra for my carry-on. When I checked in, I was told that I had to check it. I said I’ll pay for it, and was told that this wasn’t an option anymore. They said I still had to pay $50 to check my carry-on. I told them I’ll pay whatever to just carry it in as intended. I was not allowed, so eventually I paid $50 to check my carry-on under a plane that was half full, with overhead compartments that were even less full. My white carry-on suitcase was practically destroyed getting from Idaho falls to Denver to Orange County. The low price air fair was a bait and switch. Got me to the gate, made me pay extra, then didn’t even allow me to pay for a carry on. Not to mention that I paid the $8 for WiFi that didn’t work. All to get my suitcase destroyed. I don’t think I’m going to even keep my Untied mileage plus membership and card. Apparently, membership does not have its privileges for this one.

The flight was delayed, they didn’t even have water for the toilets or for drinks

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.

It was pretty straight forward, no glitches or hidden costs

It was a short flight so, everything went smoothly and we got to where we needed to be safely.

Didn’t make it on the flight. Delayed then had to be rebooked, which in turn had me waiting at the airport for another 8 hours before next flight

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

They messed up my seat so I didn’t get the one I paid for

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.

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

Information on your arrival and departure airports