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Kansas City International Airport to St. Louis flight
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Cheap Flights from Kansas City International Airport to St. Louis

Search for flights from Kansas City International Airport to St. Louis and check out affordable one-way and round-trip options.

  • One way
  • Round-trip
sortSort: Price (Lowest)
  • Sort: Price (Lowest)
  • Sort: Departure (Earliest)
      • MCI07:23
        9h 58m
        1 stop
        STL17:21
        Kansas City - St. Louis|Wed, Jul 24|American Airlines
        US$97US$172
        44% OFF
        44% OFF
        US$172US$97
      • MCI07:08
        10h 10m
        1 stop
        STL17:18
        Kansas City - St. Louis|Tue, Jul 2|American Airlines
        US$97US$172
        43% OFF
        43% OFF
        US$172US$97
      • MCI07:13
        10h 6m
        1 stop
        STL17:19
        Kansas City - St. Louis|Fri, Jul 5|American Airlines
        US$103US$172
        40% OFF
        40% OFF
        US$172US$103
      • MCI07:13
        10h 6m
        1 stop
        STL17:19
        Kansas City - St. Louis|Tue, Jul 9|American Airlines
        US$103
        US$103
      • MCI05:48
        8h 36m
        1 stop
        STL14:24
        Kansas City - St. Louis|Thu, Jul 4|American Airlines
        US$116
        US$116
      • MCI06:00
        11h 19m
        1 stop
        STL17:19
        Kansas City - St. Louis|Wed, Jul 17|United Airlines
        US$119
        US$119
      • MCI06:00
        11h 18m
        1 stop
        STL17:18
        Kansas City - St. Louis|Wed, Jun 26|United Airlines
        US$127
        US$127
      • MCI06:00
        11h 18m
        1 stop
        STL17:18
        Kansas City - St. Louis|Tue, Jul 2|United Airlines
        US$127
        US$127
      • MCI18:40
        1h
        Direct
        STL19:40
        Kansas City - St. Louis|Sat, Jun 22|Southwest Airlines
        US$127
        US$127
      • MCI11:23
        5h 56m
        1 stop
        STL17:19
        Kansas City - St. Louis|Fri, Jul 5|United Airlines
        US$137
        US$137
      • MCI13:00
        3h 5m
        Direct
        STL14:00
        Kansas City - St. Louis|Tue, Jun 25|American Airlines
        Find More Flights
        Find More Flights

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

Selected Airlines from Kansas City International Airport to St. Louis

See which airlines fly from Kansas City International Airport to St. Louis. Find the airline that best meets your travel needs by comparing prices and treat yourself to an enjoyable journey.

American Airlines
From US$97
United Airlines
From US$119
Southwest Airlines
From US$127
Sun Country Airlines
From US$138
Frontier Airlines
From US$164
Delta Air Lines
From US$199
Alaska Airlines
From US$271
ANA airlines

Find more flights and airlines

Airports in St. Louis

Learn about different airports in St. Louis, find the best flight and transfer options, and plan your journey.

  • 21.12 km from central St. Louis
    St.Louis Lambert International Airport
    Tickets From
    US$97
Flight Schedule from Kansas City International Airport to St. Louis

Check the schedule for flights from Kansas City International Airport to St. Louis and find the flight that best matches your travel plans.

Flight info.
Departure
Arrival
Weekly Schedule

  1. AA824

    American Airlines

    05:48

    MCI

    1.6h

    07:25

    ORD

    SMTWT-S
    Search

  2. AA3765

    American Airlines

    08:00

    ORD

    1.4h

    09:27

    STL

    SMTWTFS

  3. UA2391

    United Airlines

    06:00

    MCI

    1.9h

    06:52

    DEN

    SMTWTFS
    Search

  4. UA652

    United Airlines

    09:40

    DEN

    2.0h

    12:43

    STL

    SMTWTFS

  5. AA2827

    American Airlines

    07:28

    MCI

    1.6h

    09:05

    ORD

    SMTWTFS
    Search

  6. AA3764

    American Airlines

    11:59

    ORD

    1.2h

    13:12

    STL

    SMTWTFS

  7. UA303

    United Airlines

    10:00

    MCI

    1.7h

    11:41

    ORD

    SMTWTFS
    Search

  8. UA2618

    United Airlines

    14:30

    ORD

    1.3h

    15:49

    STL

    SMTWTFS

  9. WN2349

    Southwest Airlines

    11:10

    MCI

    1.0h

    Direct

    12:10

    STL

    SMTWTFS
    Search

  10. DL1614

    Delta Air Lines

    14:03

    MCI

    1.9h

    16:55

    DTW

    SMTWT-S
    Search

  11. DL1656

    Delta Air Lines

    18:05

    DTW

    1.4h

    18:32

    ORD

    SMTWT-S

  12. AA2441

    American Airlines

    20:51

    ORD

    1.3h

    22:08

    STL

    SMTWTFS

  13. AA1376

    American Airlines

    16:23

    MCI

    1.7h

    18:04

    DFW

    SMTWTFS
    Search

  14. AA1010

    American Airlines

    21:10

    DFW

    1.8h

    22:57

    STL

    SMTWTFS

  15. AA1779

    American Airlines

    17:33

    MCI

    1.6h

    19:09

    ORD

    SMTWTFS
    Search

  16. AA2441

    American Airlines

    20:51

    ORD

    1.3h

    22:08

    STL

    SMTWTFS

  17. WN2598

    Southwest Airlines

    17:45

    MCI

    1.0h

    Direct

    18:45

    STL

    SMTWTFS
    Search

  18. AA1615

    American Airlines

    18:37

    MCI

    2.3h

    21:55

    CLT

    SMTWTFS
    Search

  19. AA459

    American Airlines

    22:53

    CLT

    2.0h

    23:53

    STL

    SMTWTFS
Find more flights and airlines

Flight Info of Flights from Kansas City International Airport to St. Louis

Cheapest round-trip ticket price

$174

Cheapest nonstop flight price

$97

Off-season for travel

July

Peak season for travel

September

FAQs for Kansas City International Airport to St. Louis Flights

  • 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 20km. It takes about 40 minutes by taxi.

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