Cheap Flights from Milwaukee (MKE) to St. Louis (SUS)

Popular airlines from General Mitchell Intl. Airport (MKE) to St. Louis, MO (SUS-Spirit of St. Louis)

    notification illustration

    Be in the know

    Get alerts if flight prices drop or rise*
    deals illustration

    Book smarter

    Save up to 30% on select hotels after you book a flight*
    trophy illustration

    Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

Alternative airports near St. Louis

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

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $416
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $416
Flights from Milwaukee (MKE) to St. Louis (SUS)
Origin airport
General Mitchell Intl.
Destination airport
Spirit of St. Louis
Distance
328 mi

Milwaukee to St. Louis Flights

The cheapest times to fly from Milwaukee to St. Louis

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 Milwaukee to St. Louis are during the month of . You can find some of the cheapest flights from Milwaukee to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Milwaukee to St. Louis: 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 Milwaukee to St. Louis

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 Milwaukee to St. Louis 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 Milwaukee to St. Louis 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 Milwaukee to St. Louis 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.

 

Frequently asked questions

How much does a flight from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS) cost?
Lock in a cheap one-way flight or cheap return flight from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS)?
is the most affordable month to fly from MKE to SUS. Planning your trip for the off-season is often the key to finding better fares.
What is the cheapest airline that flies from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS)?
To find the cheapest airline flying from MKE to SUS, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and cabin class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS)?
There aren't any daily direct flights departing from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS). But you can book 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 MKE to SUS?
Generally you'll find the greatest selection of flight options on a Friday. Tuesdays tend to be the quietest.* But this can change based on the season, airline and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS)?
To arrive at Spirit of St. Louis Airport (SUS) on schedule, pick a flight that takes off from General Mitchell Intl. Airport (MKE) before 3 PM. The chance 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 St. Louis from General Mitchell Intl. Airport (MKE)?
Lambert-St. Louis Intl. Airport (STL) is the only airport in St. Louis with direct flights from General Mitchell Intl. Airport (MKE). Check out the available options and discover cheap fares on Expedia.
Is it cheaper to buy a plane ticket from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS) last-minute?
Booking your flight from MKE to SUS right before your getaway is typically more expensive. However, if there's some wiggle room with your departure dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a MKE to SUS flight and hotel package?
You'll typically save money by booking a MKE to SUS flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one place. After choosing your ideal accommodations and flights, you can add extras like car rentals, tours and activities.
Can I cancel or change the date of my flight from General Mitchell Intl. Airport (MKE) to Spirit of St. Louis Airport (SUS)?
If you reserved your MKE to SUS 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 purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal if you'd like more information.

Explore a world of travel with Expedia

*Available to One Key members.