£100 Cheap Flights from Louisville (SDF) to St. Louis (STL)

View £100 flight on Sun, 7 Dec 2025Opens in a new window

Popular airlines from Louisville International Airport (SDF) to Lambert-St. Louis International Airport (STL)

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Cheap Flights from Louisville (SDF) to St. Louis (STL)

Prices were available within the past 7 days and start at £100 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Louisville (SDF) to St. Louis (STL)

August is typically the cheapest month to fly

From £111 - £411 per traveller.

Graph displaying average flight prices per month

Flight from Louisville to St. Louis route information
Origin airport
Louisville Intl.
Destination airport
Lambert-St. Louis Intl.
Distance
404 km

Compare flights from Louisville to St. Louis easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from Louisville to St. Louis. Operating between them flights per day, 2 airlines cover the route. And fly direct, getting you to Lambert-St. Louis Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Louisville Intl. to Lambert-St. Louis Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Louisville Intl. (SDF) to Lambert-St. Louis Intl. (STL)

The easiest way to view the best deals on flights from Louisville to St. Louis today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Louisville Intl. to Lambert-St. Louis Intl. start at just and range up to .  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near Louisville and St. Louis
  • booking your flight during , the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your Louisville to St. Louis flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Louisville Intl. to Lambert-St. Louis Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from Louisville Intl. Airport (SDF) to Lambert Field?
If you're planning on travelling from Louisville Intl. Airport (SDF) to St. Louis Lambert International Airport, round-trip flights start from . This price is based on fares listed within the last 7 days on Expedia for flights departing within the next year, so don't let a good deal slip through your fingers. Book now and save yourself money and time. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from Louisville Muhammad Ali Intl. Airport to Lambert-St. Louis Intl. Airport (STL)?
The majority of flights can be conveniently cancelled online, but whether you incur a fee depends on your airline. If you do need to cancel your escape, follow the easy instructions in the Customer Service Portal.
How do I find cheap flights from Louisville Intl. Airport (SDF) to St. Louis Lambert International Airport 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 Louisville Intl. Airport (SDF) to Lambert Field flights, you'll see a "no change fees" filter for you to select.
How far is the flight from Louisville Muhammad Ali Intl. Airport to Lambert-St. Louis Intl. Airport (STL)?
A flight distance of just 410 kilometres separates Louisville and St. Louis. Once you're up in the air, you won't get a chance to do much more than browse the magazine in your seat-back pocket.
Which airlines fly direct from Louisville Intl. Airport (SDF) to Lambert-St. Louis Intl. Airport (STL)?
You won't find any airlines flying directly between SDF and St. Louis Lambert International Airport, so be prepared to make at least one stop on your journey. A layover, whether short or long, can be a good way to break up a trip!
Are Louisville Intl. Airport (SDF) to Lambert-St. Louis Intl. Airport (STL) flight tickets cheaper when they're purchased at the last minute?
Airline tickets from Louisville Intl. Airport (SDF) to Lambert Field are available up to 12 months before departure on Expedia. And although you may occasionally score a great last-minute deal, it's not something you should bank on. Also, booking your flights well in advance means you'll have more choices — and you can avoid being wedged in the dreaded middle seat! We're constantly updating our fares to bring you the best bargains, so check back often for all the latest specials.

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