$99 Cheap Flights from Kansas City (MCI) to St. Louis (STL)

Bundle Your Flight + Hotel & Save!

Popular airlines among travelers

American Airlines
United
Alaska Airlines
Delta
Frontier Airlines
Spirit Airlines
    Plan, book, fly with confidence
  • trending down icon
    Be in the know
    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon
    Book smarter
    Save up to 30% on select hotels after you book a flight*
  • one key icon
    Earn twice
    Earn your airline miles on top of our OneKeyCash

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

Prices were available within the past 7 days and start at $99 for one-way flights and $186 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Spirit Airlines
Flights from Kansas City (MCI) to St. Louis (STL)
Origin airport
Kansas City Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, Sun Country Airlines, United
Roundtrip price
$185
Distance
236 mi
Average flight time
1 hour 1 min

Kansas City to St. Louis Flights

Whether you’re looking for a grand adventure or just want to get away for a last-minute break, flights from Kansas City to St. Louis offer the perfect respite. Not only does exploring St. Louis provide the chance to make some magical memories, dip into delectable dishes, and tour the local landmarks, but the cheap airfare means you won’t bust your budget. So no matter whether your ideal itinerary involves flying one way, non-stop, or round trip, you’re bound to find flights that match your schedule on Expedia, and at prices that won’t shock your wallet.

Bagging a cheap flight from Kansas City to St. Louis may mean more dollars to spend on for one-of-a-kind souvenirs when you arrive, but it doesn’t mean you have to skimp on your travel experience, as Expedia offers a sizzling selection of cheap airlines that’ll put you in your happy place on their planes, whether that’s getting lost in a hair-raising airport thriller, dreaming on the passing landscape over a glass of bubbly, or jotting down your vacation bucket list at 38,000 feet. There’s also bound to be plenty of opportunities to snap a few photos of the high life that will make your friends green with envy. After all, enjoying the journey is part of the fun.

With so many affordable flights and so many wonderful adventures awaiting you, there’s no reason to put off booking a fantastic flight from MCI to STL today. So don’t leave it to the last minute to make your dream trip a reality: pack your bags with your go-to travel accessories, put together your list of must-see attractions and can’t-miss activities, and get ready to broaden your horizons – with Expedia, the wonders of St. Louis are only a plane trip away. Book your travel arrangements with us today!

If you would like to book flights to St. Louis more flexibly many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to St. Louis is $99 now!

Frequently asked questions

How much is a one-way flight from MCI to STL?
Prepare to score a terrific deal, because one-way Kansas City flights to St. Louis start from only $134. This information is based on the best price found on Expedia for this journey departing in the next three months. This airfare is for an American Airlines flight, departing Kansas City Intl. Airport on April 20 2024 and touching down at Lambert-St. Louis Intl. Airport (STL). This price was last updated on March 26 2024 and has not changed since.
Is it cheaper to buy a plane ticket from MCI to Lambert-St. Louis Intl. Airport (STL) last minute?
When it’s time to book your flights, being organized pays off. While it may be possible to pick up a deal on a Kansas City Intl. Airport to STL flight at the last minute, tickets usually don’t get cheaper as the date of departure nears. Based on flight pricing and demand studies in 2022, we have found that the sweet spot to book a domestic flight is between 28 – 35 days ahead. For international journeys it’s three to four months.
What is the cheapest airline flying from MCI to STL in the next 90 days?
The cheapest carrier flying from Kansas City to St. Louis found on Expedia is American Airlines, which has fares starting from $134. This price is based on airfares found on Expedia with a departure date within the next 90 days. The flight departs Kansas City Intl. Airport on April 20 2024 and lands at Lambert-St. Louis Intl. Airport (STL). The pricing information was updated on March 26 2024 and has not changed since.
What's the cheapest price for a flight from MCI to Lambert Field next month?
The cheapest price for a flight from Kansas City to St. Louis over the next month is $134. If you’re hoping to travel soon, now’s the time to reel in this fare. This price was found after looking at all available flights on Expedia with a departure date within the next 30 days. This airfare is for a one-way American Airlines flight setting off from Kansas City Intl. Airport (MCI) on April 20 2024 and getting into STL. The price was updated on March 26 2024 and has not changed since.
What airports do you fly into for Central United States from Kansas City?
You can fly from Kansas City to Central United States through Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) or St. Louis Downtown Airport (CPS). If you’re wondering which gateway to choose, take into account factors such as the price of tickets and the expense and ease of getting from the airport. Hop off the plane at Lambert-St. Louis Intl. Airport (STL) and you’ll be about 180 mi east of the city center.
Can I change the date of my flight from Kansas City Intl. Airport to STL?
We know plans can change, so Expedia is here to help make things as easy as possible. To start, find your Kansas City Intl. Airport (MCI) to STL itinerary through the Expedia Trips portal and check the ticket rules about what changes you can make. If you booked your airfare in the last 24 hours, some carriers will let you cancel at no cost and organize new flights. If you booked more than 24 hours ago, get in touch with us via our Customer Service portal to learn more about your options.
*Available to One Key members.