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Cheap flight deals from Sioux City to St. Louis Starting at €252

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

  • Round-trip
      • SUX10:00 am
        4h 36m
        1 stop
        STL02:36 pm
        Thu, Feb 27|Sioux City - St. Louis|United Airlines
        STL05:36 pm
        4h 36m
        1 stop
        SUX10:12 pm
        Wed, Mar 5|St. Louis - Sioux City|United Airlines
        €252€429
        41% OFF
        41% OFF
        €429€252

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Thu, Feb 27-Wed, Mar 5, arriving at St. Louis Lambert International Airport. One-way Prices start from €252 including taxes and charges.

      • SUX10:00 am
        4h 36m
        1 stop
        STL02:36 pm
        Wed, Mar 5|Sioux City - St. Louis|United Airlines
        STL05:33 pm
        4h 59m
        1 stop
        SUX10:32 pm
        Tue, Mar 11|St. Louis - Sioux City|United Airlines
        €252€429
        41% OFF
        41% OFF
        €429€252

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Wed, Mar 5-Tue, Mar 11, arriving at St. Louis Lambert International Airport. One-way Prices start from €252 including taxes and charges.

      • SUX10:00 am
        5h 40m
        1 stop
        STL03:40 pm
        Tue, Feb 25|Sioux City - St. Louis|United Airlines
        STL03:32 pm
        6h 40m
        1 stop
        SUX10:12 pm
        Mon, Mar 3|St. Louis - Sioux City|United Airlines
        €253€429
        41% OFF
        41% OFF
        €429€253

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Tue, Feb 25-Mon, Mar 3, arriving at St. Louis Lambert International Airport. One-way Prices start from €253 including taxes and charges.

      • SUX03:25 pm
        6h 25m
        1 stop
        STL09:50 pm
        Thu, Apr 24|Sioux City - St. Louis|United Airlines
        STL03:40 pm
        6h 46m
        1 stop
        SUX10:26 pm
        Mon, Apr 28|St. Louis - Sioux City|United Airlines
        €277
        €277

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Thu, Apr 24-Mon, Apr 28, arriving at St. Louis Lambert International Airport. One-way Prices start from €277 including taxes and charges.

      • SUX10:00 am
        4h 36m
        1 stop
        STL02:36 pm
        Wed, Feb 26|Sioux City - St. Louis|United Airlines
        STL08:20 am
        8h 2m
        1 stop
        SUX04:22 pm
        Tue, Mar 4|St. Louis - Sioux City|United Airlines
        €278
        €278

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Wed, Feb 26-Tue, Mar 4, arriving at St. Louis Lambert International Airport. One-way Prices start from €278 including taxes and charges.

      • SUX10:00 am
        5h 40m
        1 stop
        STL03:40 pm
        Sun, Mar 2|Sioux City - St. Louis|United Airlines
        STL05:33 pm
        4h 59m
        1 stop
        SUX10:32 pm
        Sat, Mar 8|St. Louis - Sioux City|United Airlines
        €278
        €278

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Sun, Mar 2-Sat, Mar 8, arriving at St. Louis Lambert International Airport. One-way Prices start from €278 including taxes and charges.

      • SUX10:00 am
        4h 36m
        1 stop
        STL02:36 pm
        Mon, Feb 24|Sioux City - St. Louis|United Airlines
        STL12:15 pm
        9h 57m
        2 stops
        SUX10:12 pm
        Sun, Mar 2|St. Louis - Sioux City|Southern Airways Express
        €304
        €304

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Mon, Feb 24-Sun, Mar 2, arriving at St. Louis Lambert International Airport. One-way Prices start from €304 including taxes and charges.

      • SUX10:00 am
        4h 36m
        1 stop
        STL02:36 pm
        Mon, Mar 3|Sioux City - St. Louis|United Airlines
        STL12:15 pm
        10h 17m
        2 stops
        SUX10:32 pm
        Sun, Mar 9|St. Louis - Sioux City|Southern Airways Express
        €309
        €309

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Mon, Mar 3-Sun, Mar 9, arriving at St. Louis Lambert International Airport. One-way Prices start from €309 including taxes and charges.

      • SUX10:00 am
        4h 39m
        1 stop
        STL02:39 pm
        Sat, Mar 1|Sioux City - St. Louis|United Airlines
        STL01:00 pm
        9h 32m
        2 stops
        SUX10:32 pm
        Fri, Mar 7|St. Louis - Sioux City|Southern Airways Express
        €324
        €324

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Sat, Mar 1-Fri, Mar 7, arriving at St. Louis Lambert International Airport. One-way Prices start from €324 including taxes and charges.

      • SUX10:00 am
        4h 23m
        1 stop
        STL02:23 pm
        Thu, Mar 13|Sioux City - St. Louis|United Airlines
        STL08:20 am
        6h 14m
        1 stop
        SUX02:34 pm
        Tue, Mar 18|St. Louis - Sioux City|United Airlines
        €348
        €348

        Choose United Airlines flights from Sioux City to St. Louis. The one-way connecting flight with United Airlines departs from Sioux Gateway Airport on Thu, Mar 13-Tue, Mar 18, arriving at St. Louis Lambert International Airport. One-way Prices start from €348 including taxes and charges.

      • SUX01:00 pm
        3h 5m
        Nonstop
        STL02:00 pm
        Sun, Feb 23|Sioux City - St. Louis|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.

Sioux City to St. Louis Flight Time

Flight info.
Departure
Arrival
Weekly Schedule

  1. UA5118

    United Airlines

    05:15 pm

    SUX

    1.8h

    06:04 pm

    DEN

    SMTWTFS
    Search

  2. UA1248

    United Airlines

    05:40 pm

    DEN

    2.1h

    08:44 pm

    STL

    SMTWTFS

  3. UA5118

    United Airlines

    05:15 pm

    SUX

    1.8h

    06:04 pm

    DEN

    SMTWTFS
    Search

  4. F91993

    Frontier Airlines

    11:02 am

    DEN

    2.2h

    12:14 pm

    LAS

    SMTWTFS

  5. F92018

    Frontier Airlines

    06:00 am

    LAS

    3.2h

    11:10 am

    STL

    -MTWTFS

  6. UA5118

    United Airlines

    05:15 pm

    SUX

    1.8h

    06:04 pm

    DEN

    SMTWTFS
    Search

  7. UA652

    United Airlines

    09:40 am

    DEN

    2.1h

    12:45 pm

    STL

    SMTWTFS

  8. UA5077

    United Airlines

    10:00 am

    SUX

    1.7h

    11:40 am

    ORD

    SMTWTFS
    Search

  9. 9X482

    Southern Airways Express

    08:15 am

    ORD

    1.9h

    10:10 am

    UIN

    SMTWTFS

  10. 9X465

    Southern Airways Express

    11:10 am

    UIN

    1.0h

    12:10 pm

    STL

    SMTWT-S

  11. UA5077

    United Airlines

    10:00 am

    SUX

    1.7h

    11:40 am

    ORD

    SMTWTFS
    Search

  12. AA4517

    American Airlines

    02:50 pm

    ORD

    1.3h

    04:10 pm

    STL

    -MT--F-

  13. UA5077

    United Airlines

    10:00 am

    SUX

    1.7h

    11:40 am

    ORD

    SMTWTFS
    Search

  14. UA1693

    United Airlines

    02:20 pm

    ORD

    1.3h

    03:40 pm

    STL

    SMTWTFS

  15. UA5077

    United Airlines

    10:00 am

    SUX

    1.7h

    11:40 am

    ORD

    SMTWTFS
    Search

  16. UA3579

    United Airlines

    01:15 pm

    ORD

    1.4h

    02:39 pm

    STL

    ------S

  17. UA5077

    United Airlines

    10:00 am

    SUX

    1.7h

    11:40 am

    ORD

    SMTWTFS
    Search

  18. UA4496

    United Airlines

    01:15 pm

    ORD

    1.4h

    02:39 pm

    STL

    -----F-

  19. UA5077

    United Airlines

    10:00 am

    SUX

    1.7h

    11:40 am

    ORD

    SMTWTFS
    Search

  20. UA1657

    United Airlines

    01:15 pm

    ORD

    1.4h

    02:36 pm

    STL

    SMTWTF-
Find more flights and airlines

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

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 Sioux City (SUX) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Sioux City to St. Louis 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 Sioux City (SUX) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around €335.

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St. Louis Lambert International Airport to downtown is about 20 km. It takes about 40 minutes by taxi.

How to find a cheap flight from Sioux City to St. Louis

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 Sioux City to St. Louis. 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 | Sioux City to St. Louis

Off-season for travelJanuary
Peak season for travelFebruary
Flight distance672.02 km
Popular airlineUnited Airlines

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