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$32 Cheap Flights to Lake St Louis, MO

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Popular airlines to Lake St Louis

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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 $32 for one-way flights and $80 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Southwest Airlines
Delta
American Airlines
United

Alternative airports near Lake St Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

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

From $148 - $387 per traveler.

What you need to know for your flight to Lake St Louis

Flights to Lake St Louis at a glance

Traveling to Lake St. Louis is easy; you can select from various full-service or budget airlines. Review flight durations and choose the option that best fits your budget, schedule, and plans to visit the city's notable attractions and neighborhoods.

  • Major airport near Lake St Louis: Lambert-St. Louis International Airport (STL)
  • Flights per week: 3,150+ flights arriving at Lake St Louis airport
  • Number of airlines that fly to Lake St Louis: around 40+ carriers

Popular airport near Lake St Louis

Lake St. Louis is a charming city ideal for families seeking outdoor adventures, entertainment, and romantic getaways. With its beautiful scenery and a variety of attractions, it’s no wonder that travelers flock to this destination. The city is conveniently accessible via a major airport.

  • Lambert-St. Louis International Airport (STL): Situated in St. Louis County, Missouri, approximately 23 miles from Lake St Louis, this airport offers both domestic and international flights, linking approximately 210 cities across the U.S. and 110 global destinations. Travelers have the option to enhance their journey with upgrades to first class, premium economy, or business class seating, depending on their chosen routes and airlines. Notable carriers at this airport include Southwest Airlines, American Airlines, and Delta.

Top routes to Lake St Louis

  • New York (JFK/LGA) to Lake St Louis (STL), with one-way flights starting at around $90
  • Las Vegas (LAS) to Lake St Louis (STL), with one-way airfare from around $60
  • Orlando (MCO) to Lake St Louis (STL), with one-way fares starting at around $45
  • Denver (DEN) to Lake St Louis (STL), with one-way tickets available from around $45
  • Los Angeles (LAX) to Lake St Louis (STL), with one-way fares starting at around $120

Cheapest routes to Lake St Louis

  • Chicago (ORD/MDW) to Lake St Louis (STL), with affordable one-way prices from around $40
  • Kansas City (MCI) to Lake St Louis (STL), with cheap one-way fares from around $40
  • Quincy (UIN) to Lake St Louis (STL), with low one-way fares from around $40
  • Orlando (MCO) to Lake St Louis (STL), with cheap one-way fares from around $45
  • Denver (DEN) to Lake St Louis (STL), with low one-way fares from around $45

*Flight times and fares vary by season and availability and are based on one-way routes

Top airlines with flights to Lake St Louis

  • American Airlines: Operating flights to Lambert-St. Louis International Airport (STL), American Airlines contributes about 28% of arrivals to Lake St Louis. The average one-way fare hovers around $330, with first class available on certain routes.
  • Southwest Airlines: Serving Lambert-St. Louis International Airport (STL), Southwest Airlines accounts for roughly 27% of arrivals to Lake St Louis. Travelers can expect the average one-way fare to be around $240.
  • Delta: Providing service to Lambert-St. Louis International Airport (STL), Delta represents approximately 20% of arrivals to Lake St Louis. The typical one-way fare is around $290, with options for premium economy and first class on select routes.
  • United: Flying into Lambert-St. Louis International Airport (STL), United Airlines makes up about 15% of arrivals to Lake St Louis. The average one-way fare is around $320, and first class may be available depending on the flight.
  • Frontier Airlines: Operating to Lambert-St. Louis International Airport (STL), Frontier Airlines contributes around 5% of arrivals to Lake St Louis. Passengers can anticipate an average one-way fare of approximately $150.

Best time to fly to Lake St Louis

The most popular months for travelers to fly to Lake St Louis are January, March, and April, when peak temperatures in Lake St Louis can reach up to 55.2°F in April. If you prefer quieter travel, consider September, the least busy time to visit with temperatures around 70°F and typically the lowest average one-way fare (around $222), roughly 9% cheaper than the yearly average. Looking for additional cheaper months to fly? October, May, and August offer average one-way fares of around $230, making them good options for flexible travelers.

calendar iconMonthtemperature iconTemperaturerain iconPrecipitationmostly cloudy iconCloudinesscrowd level iconDemandprice iconAverage one-way Fare
January30.9°F (-0.6°C)Light RainMostly CloudyModerately High$277
February33.8°F (1.0°C)Light RainMostly SunnyAverage$245
March45.7°F (7.6°C)Light RainMostly SunnyModerately High$273
April55.2°F (12.9°C)Light RainMostly SunnyModerately High$249
May65.3°F (18.5°C)Light RainMostly SunnyAverage$229
June75.0°F (23.9°C)Light RainMostly SunnyAverage$258
July77.9°F (25.5°C)Light RainMostly SunnyAverage$251
August76.1°F (24.5°C)Light RainMostly SunnyAverage$235
September70.0°F (21.1°C)Light RainMostly SunnyModerately Low$222
October57.6°F (14.2°C)Light RainMostly SunnyAverage$225
November45.3°F (7.4°C)Light RainMostly SunnyModerately Low$243
December36.9°F (2.7°C)Light RainMostly SunnyModerately Low$249

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

How to save money on a flight to Lake St Louis

Getting some of the best deals on flights to Lake St Louis is all about timing and flexibility. Here are some key tips to help you save:

  1. Compare flight options—use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  2. Set up price alerts—as an Expedia member you can use Price Tracking to receive notifications when flight prices change.
  3. Bundle and save—book a flight and unlock a hotel deal on Expedia*, or explore our Lake St Louis hotel and flight deals.
  4. Think about luggage-nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your baggage allowance before confirming your booking to avoid excess baggage fees at the airport.
  5. Earn miles—you can earn airline miles when you book your Lake St Louis flight with Expedia. Just select your frequent flyer program and enter your program number when confirming your booking.

*For members. Select hotels.

Arriving in Lake St Louis

Lake St Louis welcomes travelers through its range of transport options based on price, convenience, and proximity. Here's how to reach Lake St Louis efficiently:

  • Public transportation: From Lambert-St. Louis International Airport, Lambert Main Terminal Station, a metro station, is conveniently located about 0.1 miles from the airport, making it easily accessible for travelers.
  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Lake St Louis, with private rides that can be arranged in advance.
  • Car rental: Renting a car in Lake St Louis is a good option if you plan to explore and sightsee beyond the city. Browse cheap car rentals in Lake St Louis on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.

Where to stay around Lake St Louis

  • Wentzville: Wentzville is located 4 miles drive away from Lake St Louis and offers a vibrant mix of family-friendly activities and urban experiences. Enjoy a day at the National Equestrian Center, where equestrian events take center stage, or unwind at Innsbrook Lake, perfect for a romantic outing or scenic picnic. The city also features a lively urban park and a golf course for those looking to enjoy the outdoors. Don’t miss the Vietnam Veterans Memorial, a poignant cultural site that honors the sacrifices of veterans.
  • Dardenne Prairie: Dardenne Prairie is located 3 miles drive away from Lake St Louis and is a delightful village ideal for families and outdoor enthusiasts. The National Equestrian Center is a must-visit for entertainment seekers, while the St Charles Convention Center caters to business travelers. For a taste of local life, explore Westport Plaza, a charming neighborhood with shops and dining options. Dardenne Prairie’s parks and recreational areas provide ample opportunities for fun and relaxation.
  • Innsbrook: Innsbrook is located 19 miles drive away from Lake St Louis and is a serene village known for its stunning natural beauty and outdoor adventures. The centerpiece, Innsbrook Lake, invites visitors for romantic strolls and beach days, while Corlina Beach offers a perfect spot for sunbathing. For those who crave adventure, Mooring Marina provides access to various water activities. Enjoy the peaceful surroundings of this area, especially in the warmer months when the scenery is at its best.

Tips for short-haul flights to Lake St Louis

For quick getaways, efficiency is key. Here is how to make your short-haul journey smoother:

  • Pack light and skip checked bags—when flying with budget airlines, it's often more economical to travel with just a carry-on. Optimize space by using travel-size toiletries, wearing your bulkiest clothing, and coordinating your outfits. This approach also helps you avoid the wait at baggage claim upon arrival.
  • Bring your own entertainment—many short-haul flights may lack in-flight entertainment options. Download your favorite TV shows, movies, music, or podcasts ahead of time, and consider bringing a book to keep yourself engaged. Remember to charge your devices fully before you board.
  • Arrive at the airport in plenty of time—even for short or domestic flights, it’s advisable to arrive at least 1.5 to 2 hours prior to departure, allowing for traffic and security line delays.
  • Bring your own snacks and water—pack some snacks and carry a refillable water bottle to stay hydrated while saving money at the airport.

Tips for long-haul flights to Lake St Louis

Flying long-haul sometimes requires extra planning to ensure a comfortable journey:

  • Select your seat in advance—for longer flights, choosing your seat is essential for comfort. Full-service airlines often allow free seat selection once online check-in opens, typically 24–48 hours before your flight. Some airlines may enable seat selection even earlier.
  • Arrive at the airport in plenty of time—aim to arrive at the airport at least 3 hours prior to departure for international flights. This allows ample time for check-in, security, and immigration procedures.
  • Relax at the airport—if you have some extra time, take the opportunity to explore the shops, enjoy a coffee, or unwind at the gate or in a departure lounge if you have access. Airport Wi-Fi is generally free and readily available.
  • Adjust to the new time zone mid-flight—begin to sync your body clock by changing your watch and sleep schedule to align with your destination's time zone. Try to sleep or stay awake during the flight according to the local time at your arrival destination to help minimize jet lag.

Frequently asked questions

What month is the cheapest to fly to Lake St Louis?
October is the cheapest month to fly to Lake St Louis. Demand is lower then, so you're likely to snag a great deal. Booking your trip outside of school breaks and public holidays could also help you save.
Which US cities have the cheapest flights to Lake St Louis?
Chicago, Dallas and Denver usually offer cheap flights to Lake St Louis. Bear in mind that fares may vary based on factors such as time of year, number of stopovers and demand.
Which US cities fly direct to Lake St Louis?
You can fly to Lake St Louis without any stops from 55 US destinations. To find a nonstop route, select "Direct flights only" when searching for flights to Lake St Louis on Expedia. Then, compare the options and pick the best departure out of one of these cities:
  • Chicago
  • Dallas
  • Denver
  • New York
  • Atlanta
How to find a cheap flight to Lake St Louis?
If you're searching for cheap flights to Lake St Louis, consider low-season travel. Booking in advance is also likely to help you score savings. Or, fly on a different day — flights on a Thursday are on average 16% cheaper than Sunday departures.* Opt to receive flight price alerts on the Expedia app and you'll be notified as soon as fares fall.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to Lake St Louis?
While booking in advance is generally the easiest way to save money, don't panic if your Lake St Louis vacation is last minute. It's still possible to find cheap flights to Lake St Louis, especially if your plans have some flexibility. Try switching up your dates, exploring different ticket options or flying out of an alternative airport.
How far in advance should I book a flight to Lake St Louis?
Secure the departure dates you want and a fare that fits your budget by booking your domestic flight to Lake St Louis up to 28 days in advance. Lock in tickets between two and four months ahead if you're visiting Lake St Louis from an international destination.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to Lake St Louis?
You can save an average of 8% if you purchase tickets on a Sunday instead of Fridays, which tend to be the priciest day to book.* When it comes to scoring a cheap flight to Lake St Louis, it's all about timing.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to Lake St Louis?
There are 10 airlines connecting Lake St Louis with 33 airports around the globe. The major entry point to this city is Lambert-St. Louis Intl. Airport (STL). Travel with any of these well-known airlines to Lake St Louis:
  • Delta Air Lines
  • American Airlines
  • United Airlines
  • Southern Airways Express
Where do you fly into Lake St Louis?
The main airport to fly to Lake St Louis is Lambert-St. Louis Intl. Airport (STL). You can also land at Spirit of St. Louis Airport (SUS) when flying to Lake St Louis.
How far is the airport from central Lake St Louis?
Landing at Lambert-St. Louis Intl. Airport (STL) puts you about 25 mi east of the center of Lake St Louis.
Can I save money by booking a Lake St Louis trip package?
Book a Lake St Louis flight and hotel package deal on Expedia, and you can make significant savings. It's easy to bundle your accommodations and flights, and you can add tours and car rentals to create your own customized Lake St Louis trip. Plus, there's nothing like the convenience of booking everything in one place.
Can I change or cancel my flight to Lake St Louis?
If you reserved your flight to Lake St Louis in the last 24 hours, you can typically cancel or change it for free. After that, additional charges may apply depending on the airline's terms and conditions. For more information, head to our Customer Service Portal. Remember that some flights are non-refundable, so you may be offered a credit toward a future flight in place of a direct refund. When browsing Expedia, use the "No cancel fee" or "Changes included" filters to find fares with flexible change policies.

*Flight schedules are subject to change.

*Available to One Key members.

Book with confidence

Tips to find the cheapest flights to Lake St Louis

The cheapest day to fly

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.

The cheapest month to fly

October is the cheapest month to fly to Lake St Louis. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to Lake St Louis. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to Lake St Louis, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to Lake St Louis

The lowest price for round-trip flights to Lake St Louis in 2026 starts from from $80, while one-way tickets start from from $32. Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to Lake St Louis. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to Lake St Louis

Frontier Airlines, Southwest Airlines, American Airlines, Delta, United are just some of the airlines that can typically offer cheap tickets to Lake St Louis. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to Lake St Louis and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for Lake St Louis, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to Lake St Louis. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your Lake St Louis plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to Lake St Louis

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to Lake St Louis.

Stopover savings

The cheapest tickets to Lake St Louis are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to Lake St Louis. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to Lake St Louis for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to Lake St Louis. Simply download the free Expedia app to your smart device and activate Lake St Louis flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to Lake St Louis. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Tips to find the cheapest flights to Lake St Louis

Travel information

Destination airport
Lambert-St. Louis Intl.
Destination airport IATA code
STL
Destination city name
St. Louis
Roundtrip price
$80

Trending flights to Lake St Louis

Prices were available within the past 7 days and start at $32 for one-way flights and $80 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines

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