Cheap Flights from St. Louis (STL) to Waukesha (UES)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Waukesha, WI (UES-Waukesha County)

Alternative airports near Waukesha

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

Select flight to General Mitchell Intl. MKE. Cheapest option available. Average driving time to city center is 32 minutes. Flights from $331
MKE
General Mitchell Intl.
Cheapest
Average driving time to city center32 min
Flights from $331

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES) cost?
Grab a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES)?
Planning your getaway for is a great way to save, as it's the cheapest month for flights between STL and UES. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES)?
To find the cheapest airline that'll fly you from STL to UES, use Expedia's filter tool. Tailor your search based on your travel style, such as preferred carriers and number of stops. You can then sort your results by "Price (lowest to highest)" to see the most affordable options first.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES)?
There aren't any daily nonstop flights available from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from STL to UES?
You'll usually find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES)?
To reach Waukesha County Airport (UES) on time, choose a flight that leaves Lambert-St. Louis Intl. Airport (STL) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Milwaukee from Lambert-St. Louis Intl. Airport (STL)?
Compare your flight options from Lambert-St. Louis Intl. Airport (STL) to General Mitchell Intl. Airport (MKE). This is the only airport in Milwaukee you can jet into if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES) last-minute?
Last-minute bookings from STL to UES are usually more expensive. To lock in the lowest rates, start searching for flights as soon as possible. That said, if you're flexible with your travel plans, it's possible to land a cheap fare right before you leave.
Is it cheaper to book a STL to UES flight and hotel package?
Opting for a STL to UES flight and hotel package tends to be cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your travels all in one place. Pick from our wide range of hotels and then add car rentals, flights and activities to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Waukesha County Airport (UES)?
If you booked your STL to UES flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Waukesha County
Distance
316 mi

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St. Louis to Waukesha Flights

The cheapest times to fly from St. Louis to Waukesha

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from St. Louis to Waukesha are during the month of . You can find some of the cheapest flights from St. Louis to Waukesha with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Waukesha

Sunday is one of the best days to book for cheap flights from St. Louis to Waukesha: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from St. Louis to Waukesha

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from St. Louis to Waukesha in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap St. Louis to Waukesha flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your St. Louis to Waukesha airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

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

 

St. Louis to Waukesha Flights

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*Available to One Key members.