A large arch structure with a circular building at its base, surrounded by green lawns and people.

Cheap Flights to Lake St Louis: Lake St Louis Flight Deals

View €120 flight on Thu, 10 Sept 2026Opens in a new window

Flight 1

Popular airlines to Lake St Louis

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 15% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap round-trip flights to Lake St Louis

Prices were available within the past 7 days and start at €120 for one-way flights and €240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Delta
United
Lufthansa
Austrian Airlines

Find the cheapest month to fly from Columbus (CMH) to St. Louis (STL)

From €130 - €338 per traveller.

Frequently asked questions

What is the name of Lake St Louis' airport?
Lambert-St. Louis Intl. Airport (STL) is the main airport that serves Lake St Louis.
How far is Lambert-St. Louis Intl. Airport (STL) from central Lake St Louis?
STL is 40 kilometres from downtown Lake St Louis, so prepare yourself for a bit of a commute into the city centre.
What airport is best to fly into Lake St Louis?
Make your way through the exit doors of Lambert-St. Louis Intl. Airport (STL) and your Lake St Louis getaway will have begun! The city's main airport, it's located 40 kilometres from the downtown streets.
How many airlines fly to Lake St Louis?
Lake St Louis is serviced by 12 air carriers from at least 61 worldwide airports.
Which airlines fly to Lake St Louis?
United Airlines and American Airlines fly frequently into Lake St Louis. Catching a United Airlines flight from Chicago is one of the most preferred ways to get there.
How many nonstop flights are there to Lake St Louis?
Flying to a new place is much more straightforward when there aren't any annoying stopovers. If you're off to Lake St Louis, the good news is that there are roughly 1,206 direct flights operating every week.
Where are the most popular flights to Lake St Louis departing from?
The most popular flights to Lake St Louis set off from Chicago, Dallas and New York airports.
How long is the flight to Lake St Louis Airport?
If it's Chicago you're departing, you'll be midair for around 1 hour and 22 minutes before you touchdown in Lake St Louis. Terminal to terminal from Dallas generally takes 1 hour and 43 minutes and from New York, it's 3 hours and 1 minute.
How to book the cheapest flight to Lake St Louis?
Don't leave booking your flight to Lake St Louis until the last possible moment. That's one trick seasoned travellers use to get the best prices. Booking well in advance means more choices and more affordable flights. Another fantastic way to nab the most competitive fare is to compare all options. If your destination has a few airports, don't forget to look into the cost of flying into a less busy terminal. Lastly, be prepared to book quickly if you stumble on a great price. It might not stick around for long. With a bit of knowledge and a little good fortune, the perfect airfare can be yours.
Do you have any tips for my flight to Lake St Louis?
We've got the lowdown on how to make your flight a stress-free experience. Follow our tips and you'll be cruising through the airport and enjoying Lake St Louis before you know it. What to pack in your hand luggage:
  • The trick to having a great travel experience is to pack in advance. First up, the essentials: passport, boarding pass, bank cards and daily medications. Next, bring items that'll help keep you occupied, like some electronic devices or a good read. It's also smart to bring your chargers, a quality neck pillow and a pair of noise-cancelling headphones. Last but not least, don't forget to squeeze in toiletries like a toothbrush, deodorant and a clean set of clothes.
Do not pack the following items in your hand luggage:
  • Leave all your full-sized bottles of hair gel and hairspray in your checked luggage. Any liquids or gels in your carry-on bag larger than 3.4 ounces (100 millilitres) will be confiscated. Sharp objects, like your beloved Swiss Army knife, and dangerous goods which are explosive or flammable, such as spray paint, flares and strong acids, are also restricted.
What to wear on a flight:
  • The aisles of an airplane are no place for a fashion parade. Wear layers and opt for shoes that are flat, roomy and easy to pull on and off.
  • Deep vein thrombosis (DVT), a blood clot condition caused by prolonged inactivity, can be a risk on long-haul flights. Try to walk around the cabin and stretch your legs or do some simple exercises in your seat to promote better circulation.
How to get through airport security fast when flying to Lake St Louis?
The answer is simple — be prepared. We've rounded up some top tips for an easy trip through airport security. Watch out Lake St Louis, here you come:
  • Keep your travel documents and passport within easy reach. They'll be the first things you'll be asked to present to airport security.
  • Next up, both you and your carry-on luggage will be X-rayed. To make the process quick and painless, remove anything that is likely to trigger the alarm. Items such as your belt, coat and earphones will be required to go through the machine.
  • All your electronic devices, including your laptop and phone, must also be scanned separately.
  • Remove all gels and liquids from your carry-on bag. They often need to be sent through the X-ray machine separately. Each item should be in a container no larger than 3.4 ounces (100 millilitres) and everything must fit in a quart-size (one litre), clear zip-close bag.
  • The right choice of footwear can save you several minutes. Hiking boots are often required to be removed and X-rayed separately. Slip-on sneakers usually aren't.
  • Airlines won't allow any pocket knives or other sharp items in the cabin. If you must bring these kinds of items, put them in your checked baggage.

Book with confidence

Expedia.ie is an online travel company that specialises in securing the best prices for flights to Lake St Louis. With Expedia you get highly specialised services, combining the best of technology, in-depth knowledge and the best connections in order to offer great deals to Lake St Louis. Expedia shares your passion for travel and has built the best online travel service that promotes and encourages travel. Whether you are looking for cheap flights to Lake St Louis, or are just on the lookout for the best flights to Lake St Louis, you are sure to find the best deals with Expedia.ie.

"One of the many benefits of booking your flights through Expedia is that we are one of the world’s largest online travel agency, which means we use our collective experience and work tirelessly to bring you the best prices. With Expedia you get a user-friendly internet experience and a dedicated customer support service that ensures that everything goes smoothly. The goal of Expedia is to offer premium services at the lowest price, all at one single place. If you wish to save even more try combing a hotel in Lake St Louis to your flight and create a personalised low cost city break or holiday to your favourite destination. Book early and you could save even more!

If you have an Expedia.ie itinerary number and have a question or concern about your travel plans you can call us on (01) 524 5005 from 8am - 10pm Monday to Friday, and 9am - 10pm at weekends and an Expedia agent will help you.

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
€239

Trending flights to Lake St Louis

Prices were available within the past 7 days and start at €120 for one-way flights and €240 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
*Available to Expedia members.