Cheap Flights from Kansas City (MCI) to St. Louis (STL)

View AU$319 flight on Tue, 9 Sep. 2025Opens in a new window

Popular airlines from Kansas City International Airport (MCI) to Lambert-St. Louis International Airport (STL)

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Cheap Flights from Kansas City (MCI) to St. Louis (STL)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$996 Return, found 2 days ago
AU$996
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$996 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,117 Return, found 2 days ago
AU$1,117
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,117 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,150 Return, found 2 days ago
AU$1,150
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,150 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,193 Return, found 2 days ago
AU$1,193
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,193 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,221 Return, found 2 days ago
AU$1,221
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,221 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,252 Return, found 2 days ago
AU$1,252
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,252 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,270 Return, found 2 days ago
AU$1,270
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,270 found 2 days ago
American Airlines
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,293 Return, found 2 days ago
AU$1,293
Return
found 2 days ago
Select American Airlines flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,293 found 2 days ago
United
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$1,358 Return, found 2 days ago
AU$1,358
Return
found 2 days ago
Select United flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$1,358 found 2 days ago
Delta
Mon, 15 Sep. - Wed, 17 Sep.
MCI
Kansas City
STL
St. Louis
AU$2,038 Return, found 2 days ago
AU$2,038
Return
found 2 days ago
Select Delta flight, departing Mon, 15 Sep. from Kansas City to St. Louis, returning Wed, 17 Sep., priced at AU$2,038 found 2 days ago

Find the cheapest month to fly from Kansas City (MCI) to St. Louis (STL)

September is typically the cheapest month to fly

From AU$133 - AU$2,152 per traveller.

Graph displaying average flight prices per month

Flight from Kansas City to St. Louis route information
Origin airport
Kansas City Intl.
Destination airport
Lambert-St. Louis Intl.
Return price
AU$996
Distance
378 km
Average flight time
1 hour 5 mins

Your quick guide to flights from Kansas City to St. Louis

Pick up great flights from Kansas City to St. Louis

With Expedia, you have your pick of flights a day with 20 airlines covering flights from Kansas City to St. Louis. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from Kansas City to St. Louis that take around hours.

Find cheap flights from Kansas City to St. Louis

From the great flight deals with prices currently ranging from AU$996 to AU$2,038, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from Kansas City to St. Louis around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to St. Louis is normally in September.

Reasons to book your flight from Kansas City to St. Louis with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from Kansas City to St. Louis across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to St. Louis right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Frequently asked questions

How much is a flight from MCI to STL?
Start packing your bags, because round-trip flights from Kansas City Intl. Airport to Lambert Field start from AU$996. That's based on airfares listed within the last 7 days on Expedia for flights departing within the next year. Prices can change quickly, so book now to nab the best deal. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from MCI to Lambert-St. Louis Intl. Airport (STL)?
We get that things crop up unexpectedly, so we've made it as hassle-free as possible for you to cancel your flight online. Just visit the Customer Service Portal and follow the instructions.
How do I find cheap flights from Kansas City Intl. Airport to Lambert-St. Louis Intl. Airport (STL) that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you're searching for Kansas City Intl. Airport to St. Louis Lambert International Airport flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Kansas City Intl. Airport to Lambert Field?
A flight distance of just 380 kilometres separates Kansas City and St. Louis. Once you're up in the air, you won't have time to do much more than read the magazine in your seat pocket.
Which airlines fly direct from Kansas City Intl. Airport to STL?
A popular choice with many travellers, Southwest Airlines (WN) operates 86 monthly flights from Kansas City Intl. Airport (MCI) to St. Louis Lambert International Airport. Pick the one that suits your travel plans and book your ticket today.
Are Kansas City Intl. Airport to Lambert Field flight tickets cheaper when they're purchased at the last minute?
Flight prices are constantly going up and down, so not always. While last-minute deals between Kansas City Intl. Airport (MCI) and Lambert Field are possible, it's also a good idea to keep an eye on prices well before you fly. In fact, some carriers advertise their prices up to 12 months prior to the departure date. Expedia is continuously updating the best airfare bargains around, so keep checking and be ready to grab your seat when the price is low.

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