$21 Cheap Flights to Lake St Louis , MO

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How much is the cheapest flight to Lake St Louis?

Prices were available within the past 7 days and start at $21 for one-way flights and $45 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Tue, May 7 - Sat, May 18
CMH
John Glenn Columbus Intl.
STL
Lambert-St. Louis Intl.
$108 Roundtrip, found 6 days ago
$108
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Tue, May 7 from John Glenn Columbus Intl. to Lambert-St. Louis Intl., returning Sat, May 18, priced at $108 found 6 days ago
Frontier Airlines
Sun, May 12 - Wed, May 22
CMH
John Glenn Columbus Intl.
STL
Lambert-St. Louis Intl.
$118 Roundtrip, found 4 days ago
$118
Roundtrip
found 4 days ago
Select Frontier Airlines flight, departing Sun, May 12 from John Glenn Columbus Intl. to Lambert-St. Louis Intl., returning Wed, May 22, priced at $118 found 4 days ago
Frontier Airlines
Tue, May 21 - Wed, May 29
CMH
John Glenn Columbus Intl.
STL
Lambert-St. Louis Intl.
$126 Roundtrip, found 13 hours ago
$126
Roundtrip
found 13 hours ago
Select Frontier Airlines flight, departing Tue, May 21 from John Glenn Columbus Intl. to Lambert-St. Louis Intl., returning Wed, May 29, priced at $126 found 13 hours ago
Frontier Airlines
Tue, Jun 11 - Wed, Jun 12
CMH
John Glenn Columbus Intl.
STL
Lambert-St. Louis Intl.
$130 Roundtrip, found 3 days ago
$130
Roundtrip
found 3 days ago
Select Frontier Airlines flight, departing Tue, Jun 11 from John Glenn Columbus Intl. to Lambert-St. Louis Intl., returning Wed, Jun 12, priced at $130 found 3 days ago
Spirit Airlines
Sat, May 25 - Tue, May 28
CMH
John Glenn Columbus Intl.
STL
Lambert-St. Louis Intl.
$176 Roundtrip, found 13 hours ago
$176
Roundtrip
found 13 hours ago
Select Spirit Airlines flight, departing Sat, May 25 from John Glenn Columbus Intl. to Lambert-St. Louis Intl., returning Tue, May 28, priced at $176 found 13 hours ago

Find Your Flights to Lake St Louis STL

Cheap flights to Lake St Louis (STL)

Get started finding a cheap flight to Lake St Louis on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

We recommend using the ‘Flexible Dates’ calendar at the top of the page to see the price of plane tickets on the surrounding dates. This allows you to pick the cheapest days to fly if your trip allows flexibility and score cheap flight deals to Lake St Louis.

Roundtrip prices range from $45 - $176, and one-ways to Lake St Louis start as low as $21.

Be aware that choosing a non-stop flight can sometimes be more expensive while saving you time. And routes with connections may be available at a cheaper rate.

Airlines that fly to Lake St Louis (STL)

You have several options for which airline you choose to travel with to Lake St Louis. There are 10 airlines flying into STL: Frontier Airlines, American Airlines, Spirit Airlines. 

Cheap plane tickets may be available from different airlines at different times and with unique terms. It’s best to understand the details of each airline’s offer before judging its value.

For example, if you plan to check a bag or bring a carry-on, check whether the cheap airfare deal includes a baggage allowance. If not, verify whether the baggage fee is higher than the difference of other airline plane ticket deals offering free checked/carry-on baggage in exchange for a slightly higher airfare. 

Additionally, your preferred frequent flyer membership programs may influence your choice of cheap airline. Expedia allows you to enter your membership numbers during checkout to earn points from your airline and Expedia Rewards—all while getting a great deal and planning all your travel in one online platform.

Find the best deals

At Expedia, we source many flight deals from multiple providers, so you can easily find the best deals that are right for you. A great strategy for getting the best deals can be to make sure you book and travel at the optimal times. Airfare to Lake St Louis (STL) varies throughout the year based on seasonal demand. You’ll see the lowest rates for roundtrips to STL in May and in May for one-ways.

Cancellation & flexibility

To change or cancel eligible flights, go to ‘My Trips’ and navigate to your itinerary. If you booked within the last 24-hours, you might be able to cancel your flight for free. Learn more about flight changes or cancellations from our customer service portal. Some plane tickets are available with no change fees, which you can filter for during your search.

Frequently asked questions

How do I find cheap flights to Lake St Louis that have flexible change policies?
Search for your cheap fares to Lake St Louis, then select “No change fee” under the “Flexible change policies” subheading. It’s as simple as that. We appreciate that things can change and flexibility matters, so book with confidence with Expedia.
What is the name of the airport in Lake St Louis?
Lake St Louis is served by a single airport, Lambert-St. Louis Intl. Airport (STL).
How far is Lambert-St. Louis Intl. Airport (STL) from central Lake St Louis?
The trip between Lambert-St. Louis Intl. Airport (STL) and downtown Lake St Louis is fairly long. You’ll have to travel 35 mi before you can drop your bags at your hotel in the city.
How can I book the cheapest flight to Lake St Louis?
To increase your chances of scoring the cheapest flight, enter your travel details into the search bar, then filter the results by airline, departure/arrival times and any stops on your route. Also compare the prices of flying into and out of different airports if that’s an option for you. Timing is a big factor in hacking air travel — book domestic flights at least four weeks out and international flights around six months before departure to save an average of 10%. And if you see a good deal, grab it before it disappears! One of the cheapest fares to Lake St Louis currently is $21, departing Orlando in May. Wherever you’ll be flying in from, Expedia will get you to Lake St Louis for the best price possible.
Which day of the week is the best day to buy a plane ticket to Lake St Louis?
Sunday is the cheapest day of the week to purchase a plane ticket. But that isn’t the only way to score a fantastic deal. Browsing tickets and being ready to buy several weeks before your departure date will also pay off. Research indicates that the optimal booking window ranges from 21 days to about 45 days before departure. Decided on your travel dates to Lake St Louis months ahead of time? Monitor when carriers first release their tickets as these are often the best available prices. Savings are subject to change and may vary depending on selections made.
What airport is best to fly into Lake St Louis?
A flight to Lake St Louis means hitting the tarmac at STL. Jump off the plane, pick up your bags and you’ll be 35 mi from the center of town.
Which airlines fly to Lake St Louis?
You’ll find 9 airlines connecting Lake St Louis with 60 airports around the world. One of the top choices is American Airlines, which operates the biggest number of flights to Lake St Louis from Chicago. Another good option is United Airlines.
How many nonstop flights are there to Lake St Louis?
Flying to somewhere new is much more straightforward when there aren’t any stopovers involved. If you’re heading to Lake St Louis, the fantastic news is that there are around 1,273 direct flights each 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, Denver and Dallas airports.
Do you have any tips for my flight to Lake St Louis?

  • Get your trip off to a good start by being well prepared. Pack your travel documents, passport and medications first. Next, consider downloading your favorite series on your tablet for a sans-guilt binge session. Or, throw in that book you’ve been wanting to read. Lastly, a snack or two and a blow-up neck pillow will go a long way to making the flight as comfy as possible.
  • There’s a lengthy list of items you shouldn’t pack in your carry-on bag too. Flammables, sharps and explosives are strictly prohibited in the cabin — they often include knives of any sort, aerosol cans and flares. Some sporting equipment, like tennis rackets and baseball bats, also generally can’t go in your hand luggage. Check your airline’s website for details about what you can and can’t take on board.

What to wear on a flight:

  • The aisles of an aircraft aren’t suitable for a fashion show. Layer up in comfortable clothing and pack a hoodie since it can get cool in the cabin during long-haul flights. Enclosed, flat shoes are best for longer journeys.
  • Consider wearing compression socks or tights to reduce the risk of deep vein thrombosis (DVT). This blood clotting condition can be caused by prolonged periods of sitting, especially on long-haul journeys. Performing foot and leg exercises in your seat or wandering around the cabin will help improve your circulation.

How can I get a cheap last-minute flight to Lake St Louis?
If you want to grab a cheap last-minute flight to Lake St Louis, you’ll need to be flexible. If you can, have some wiggle room with the dates you can travel. It will also help to leave your options open with your arrival and departure airports, airline choice, flight times and stops or layovers.
Where can I learn more about changing or canceling my flight to Lake St Louis?
Most flights are free to cancel within 24 hours of making the reservation. However, some flights are non-refundable, and you may receive a flight credit from the airline to use for a future booking. For more information, please visit our Customer Service Portal.
Flights to Lake St Louis information
Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Spirit Airlines, United
Roundtrip price
$108
Popular airline
Delta

Trending flights to Lake St Louis

Prices were available within the past 7 days and start at $21 for one-way flights and $45 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Sat, May 11 - Sat, May 11
MCO
Orlando Intl.
STL
Lambert-St. Louis Intl.
$45 Roundtrip, found 4 hours ago
$45
Roundtrip
found 4 hours ago
Select Frontier Airlines flight, departing Sat, May 11 from Orlando Intl. to Lambert-St. Louis Intl., returning Sat, May 11, priced at $45 found 4 hours ago
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