App
Customer Support
AED
Find Bookings
Worldwide Coverage
Worldwide Coverage
Flights to over 5,000 cities
One-stop Service Guarantee
One-stop Service Guarantee
Price guaranteed upon confirmed payment, booking guaranteed once tickets issued
Secure Payment
Secure Payment
Convenient & reliable booking and payment system

Cheap flight deals from St. Louis to Klagenfurt Starting at AED 2,865

We've found these cheap flights for you. You can book one-way or round-trip flight tickets.

  • Round-trip
      • STL10:18 am
        20h 42m
        2 stops
        KLU02:00 pm
        Wed, Feb 26|St. Louis - Klagenfurt|United Airlines
        KLU05:45 am
        24h 47m
        2 stops
        STL11:32 pm
        Tue, Mar 4|Klagenfurt - St. Louis|Austrian Airlines
        AED 2,865AED 4,173
        31% OFF
        31% OFF
        AED 4,173AED 2,865

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Wed, Feb 26-Tue, Mar 4, arriving at Klagenfurt Airport. One-way Prices start from AED 2,865 including taxes and charges.

      • STL11:59 am
        19h 1m
        2 stops
        KLU02:00 pm
        Wed, Feb 26|St. Louis - Klagenfurt|Austrian Airlines
        KLU05:45 am
        24h 47m
        2 stops
        STL11:32 pm
        Tue, Mar 4|Klagenfurt - St. Louis|Austrian Airlines
        AED 2,933AED 4,173
        30% OFF
        30% OFF
        AED 4,173AED 2,933

        Choose Austrian Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with Austrian Airlines departs from St. Louis Lambert International Airport on Wed, Feb 26-Tue, Mar 4, arriving at Klagenfurt Airport. One-way Prices start from AED 2,933 including taxes and charges.

      • STL03:45 pm
        16h 30m
        2 stops
        KLU03:15 pm
        Fri, Feb 28|St. Louis - Klagenfurt|United Airlines
        KLU02:50 pm
        51h 4m
        2 stops
        STL10:54 am
        Thu, Mar 6|Klagenfurt - St. Louis|Austrian Airlines
        AED 2,936AED 4,173
        30% OFF
        30% OFF
        AED 4,173AED 2,936

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Fri, Feb 28-Thu, Mar 6, arriving at Klagenfurt Airport. One-way Prices start from AED 2,936 including taxes and charges.

      • STL11:05 am
        30h 20m
        2 stops
        KLU11:25 pm
        Mon, Mar 24|St. Louis - Klagenfurt|United Airlines
        KLU03:00 pm
        54h 42m
        2 stops
        STL02:42 pm
        Mon, Mar 31|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,002
        AED 3,002

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Mon, Mar 24-Mon, Mar 31, arriving at Klagenfurt Airport. One-way Prices start from AED 3,002 including taxes and charges.

      • STL10:18 am
        20h 42m
        2 stops
        KLU02:00 pm
        Mon, Feb 17|St. Louis - Klagenfurt|United Airlines
        KLU03:15 pm
        39h 17m
        2 stops
        STL11:32 pm
        Mon, Feb 24|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,008
        AED 3,008

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Mon, Feb 17-Mon, Feb 24, arriving at Klagenfurt Airport. One-way Prices start from AED 3,008 including taxes and charges.

      • STL03:45 pm
        15h 15m
        2 stops
        KLU02:00 pm
        Wed, Feb 26|St. Louis - Klagenfurt|Lufthansa
        KLU05:45 am
        24h 47m
        2 stops
        STL11:32 pm
        Tue, Mar 4|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,029
        AED 3,029

        Choose Lufthansa flights from St. Louis to Klagenfurt. The one-way connecting flight with Lufthansa departs from St. Louis Lambert International Airport on Wed, Feb 26-Tue, Mar 4, arriving at Klagenfurt Airport. One-way Prices start from AED 3,029 including taxes and charges.

      • STL07:00 am
        24h
        2 stops
        KLU02:00 pm
        Thu, Feb 27|St. Louis - Klagenfurt|United Airlines
        KLU05:45 am
        24h 47m
        2 stops
        STL11:32 pm
        Wed, Mar 5|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,048
        AED 3,048

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Thu, Feb 27-Wed, Mar 5, arriving at Klagenfurt Airport. One-way Prices start from AED 3,048 including taxes and charges.

      • STL11:20 am
        19h 40m
        2 stops
        KLU02:00 pm
        Sun, Feb 16|St. Louis - Klagenfurt|United Airlines
        KLU04:00 pm
        53h 36m
        2 stops
        STL02:36 pm
        Sat, Feb 22|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,182
        AED 3,182

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Sun, Feb 16-Sat, Feb 22, arriving at Klagenfurt Airport. One-way Prices start from AED 3,182 including taxes and charges.

      • STL01:03 pm
        17h 57m
        2 stops
        KLU02:00 pm
        Sun, Feb 16|St. Louis - Klagenfurt|Austrian Airlines
        KLU04:00 pm
        53h 36m
        2 stops
        STL02:36 pm
        Sat, Feb 22|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,268
        AED 3,268

        Choose Austrian Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with Austrian Airlines departs from St. Louis Lambert International Airport on Sun, Feb 16-Sat, Feb 22, arriving at Klagenfurt Airport. One-way Prices start from AED 3,268 including taxes and charges.

      • STL05:34 pm
        37h 26m
        2 stops
        KLU02:00 pm
        Mon, Feb 24|St. Louis - Klagenfurt|United Airlines
        KLU02:50 pm
        39h 42m
        2 stops
        STL11:32 pm
        Sun, Mar 2|Klagenfurt - St. Louis|Austrian Airlines
        AED 3,525
        AED 3,525

        Choose United Airlines flights from St. Louis to Klagenfurt. The one-way connecting flight with United Airlines departs from St. Louis Lambert International Airport on Mon, Feb 24-Sun, Mar 2, arriving at Klagenfurt Airport. One-way Prices start from AED 3,525 including taxes and charges.

      • STL01:00 pm
        3h 5m
        Nonstop
        KLU02:00 pm
        Sun, Feb 23|St. Louis - Klagenfurt|United Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

St. Louis to Klagenfurt Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. OS7736

    Austrian Airlines

    01:10 pm

    STL

    1.5h

    02:39 pm

    ORD

    S-T-T-S
    Search

  2. OS066

    Austrian Airlines

    04:20 pm

    ORD

    9.0h

    08:20 am

    VIE

    S-T-T-S

  3. OS939

    Austrian Airlines

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  4. UA9067

    United Airlines

    03:25 pm

    STL

    8.9h

    07:20 am

    FRA

    --T-T-S
    Search

  5. LH008

    Lufthansa

    09:00 am

    FRA

    1.1h

    10:05 am

    HAM

    SMTWTFS

  6. OS284

    Austrian Airlines

    01:35 pm

    HAM

    1.7h

    03:15 pm

    KLU

    -----F-

  7. LH449

    Lufthansa

    03:30 pm

    STL

    8.9h

    07:25 am

    FRA

    --T-T-S
    Search

  8. LH6404

    Lufthansa

    09:20 am

    FRA

    1.4h

    10:45 am

    VIE

    SMTWTFS

  9. LH6405

    Lufthansa

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  10. LH449

    Lufthansa

    03:30 pm

    STL

    8.9h

    07:25 am

    FRA

    --T-T-S
    Search

  11. LH6328

    Lufthansa

    10:20 am

    FRA

    1.4h

    11:45 am

    VIE

    SMTWTFS

  12. LH6405

    Lufthansa

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  13. UA3564

    United Airlines

    07:05 am

    STL

    2.5h

    10:34 am

    EWR

    SMTWTFS
    Search

  14. UA9841

    United Airlines

    05:40 pm

    EWR

    8.2h

    07:50 am

    VIE

    SMTWTFS

  15. OS939

    Austrian Airlines

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  16. UA4426

    United Airlines

    10:39 am

    STL

    1.4h

    12:05 pm

    ORD

    SMTWTFS
    Search

  17. UA9850

    United Airlines

    04:20 pm

    ORD

    9.0h

    08:20 am

    VIE

    S-T-T-S

  18. OS939

    Austrian Airlines

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  19. UA4383

    United Airlines

    11:45 am

    STL

    1.4h

    01:12 pm

    ORD

    SMTWTFS
    Search

  20. UA9850

    United Airlines

    04:20 pm

    ORD

    9.0h

    08:20 am

    VIE

    S-T-T-S

  21. OS939

    Austrian Airlines

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  22. OS7750

    Austrian Airlines

    11:49 am

    STL

    2.6h

    03:27 pm

    EWR

    SMTWTFS
    Search

  23. OS090

    Austrian Airlines

    05:40 pm

    EWR

    8.2h

    07:50 am

    VIE

    SMTWTFS

  24. OS939

    Austrian Airlines

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S

  25. OS7750

    Austrian Airlines

    11:49 am

    STL

    2.6h

    03:27 pm

    EWR

    SMTWTFS
    Search

  26. OS090

    Austrian Airlines

    05:40 pm

    EWR

    8.2h

    07:50 am

    VIE

    SMTWTFS

  27. OS937

    Austrian Airlines

    09:45 am

    VIE

    0.8h

    10:30 am

    KLU

    -----F-

  28. AA4595

    American Airlines

    11:55 am

    STL

    1.4h

    01:17 pm

    ORD

    SMTWTFS
    Search

  29. OS066

    Austrian Airlines

    04:20 pm

    ORD

    9.0h

    08:20 am

    VIE

    S-T-T-S

  30. OS939

    Austrian Airlines

    01:05 pm

    VIE

    0.9h

    02:00 pm

    KLU

    SMTWT-S
Find more flights and airlines

When is the cheapest time to fly from St. Louis to Klagenfurt?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Frequently Asked Questions

  • When are flight tickets from St. Louis (STL) to Klagenfurt (KLU) the cheapest?

    Airlines adjust prices for flights from St. Louis to Klagenfurt based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from St. Louis (STL) to Klagenfurt (KLU) cost?

    According to Trip.com's data, the lowest price is around AED 8,280.

  • What is the transportation method from the main airport to downtown in Klagenfurt?

    • The distance from Klagenfurt Airport to downtown is about 2 km. It takes about 20 minutes by taxi.

How to find a cheap flight from St. Louis to Klagenfurt

Wait until the last minute and flight costs are often sky-high. Plan ahead, book the right way, and your savings can soar. We have loads of saving tips to help you find a cheap flight from St. Louis to Klagenfurt. Book your flights at the right time and save more.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Info | St. Louis to Klagenfurt

Off-season for travelDecember
Flight distance7,937.17 km
Popular airlineAmerican Airlines

Contact Us

About

Other Services

Payment Methods
Our Partners
Copyright © 2025 Trip.com Travel Singapore Pte. Ltd. All rights reserved
Site Operator: Trip.com Travel Singapore Pte. Ltd.