Cheap flights from Milwaukee to St. Louis from $79
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Milwaukee to St. Louis departing on 8/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Spirit Airlines flights from Milwaukee to St. Louis
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How to get the cheapest flight ticket from Milwaukee to St. Louis
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to St. Louis?
In general, July is the cheapest month to fly from Milwaukee to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $227. The month of January is another great option to travel to St. Louis, with average flight prices from Milwaukee averaging around $270.
What is the cheapest day to depart on your flight to St. Louis?
The cheapest day to depart on your flight to St. Louis is on a Tuesday when prices can be found for as low as $360. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Saturday because tickets tend to average around $425. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.
What is the cheapest time of day to depart on your flight to St. Louis?
Flying to St. Louis from Milwaukee in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $384 when looking at flights departing in the afternoon. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $405 per ticket.
What is the cheapest Milwaukee-Mitchell to Lambert-St Louis flight route?
Fly from Milwaukee-Mitchell to Lambert-St Louis for the best Milwaukee-Mitchell - Lambert-St Louis flight prices
What cabin class options are available on Milwaukee-Mitchell to Lambert-St Louis flights?
There are 1 cabin classes available to choose from on Milwaukee-Mitchell to Lambert-St Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
How have Milwaukee to St. Louis flight prices changed over time?
As of June 2025, prices for Milwaukee to St. Louis flights are approximately 29% cheaper when compared to flights at the same time last year.
What is the cheapest airline that flies from Milwaukee-Mitchell to Lambert-St Louis?
Southwest, American Airlines, and Delta are the most popular carriers operating from Milwaukee-Mitchell to Lambert-St Louis
What airlines fly to St. Louis?
American Airlines, United Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Milwaukee according to our data. American Airlines is the first choice among our users, with 43% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 6 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
How many flights depart from Milwaukee to St. Louis on average per day?
1 flights are operational daily from Milwaukee to St. Louis as of June 2025. The most popular departure time for this route is 5:00AM, with 45% of flights per day taking off in the morning.
How many flights depart from Milwaukee to St. Louis on average per week?
The number of flights available between Milwaukee and St. Louis is 10 per week as of June 2025. The most frequent departure day is Mon, with 20% of weekly flights leaving on this day.
When to book flights from Milwaukee to St. Louis
Cheap Milwaukee to St. Louis (MKE to STL) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Milwaukee to St. Louis
How far is Milwaukee-Mitchell to Lambert-St Louis by plane?
The straight-line distance from Milwaukee-Mitchell to Lambert-St Louis is 327.2 mi. Flights usually cover this in 1h 15m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Milwaukee-Mitchell Airport to Lambert-St Louis Airport?
Prices for flights from Milwaukee-Mitchell Airport to Lambert-St Louis Airport refresh daily.
How many operators does momondo search for flights from Milwaukee-Mitchell Airport to Lambert-St Louis Airport?
The number of operators available for flights from Milwaukee-Mitchell Airport to Lambert-St Louis Airport is 3 as of June 2025.
How old do you have to be to fly from Milwaukee-Mitchell Airport to Lambert-St Louis Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Milwaukee-Mitchell Airport to Lambert-St Louis Airport.
What documentation or ID do you need to fly to Lambert-St Louis Airport?
The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular plane model from Milwaukee to St. Louis?
momondo data reveals that the most frequently booked plane model on the route from Milwaukee to St. Louis is Boeing 737 MAX 8, representing 13.37% of all bookings. The subsequent popular models are Boeing 737-700 Passenger/BBJ1 (winglets) at 11.34%, Boeing 737-800 Passenger/BBJ2 (winglets) at 9.88%, and Embraer 175 (Enhanced Winglets) at 7.56%.
What is the most popular airline from Milwaukee to St. Louis?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Milwaukee to St. Louis is Southwest (66% of total bookings). The next most popular airlines are American Airlines (20%) and United Airlines (13%).
Best airlines flying from Milwaukee to St. Louis
Compare and see reviews for airlines that fly from Milwaukee to St. Louis with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $156 | Free Cancellation | Rating 7.4 8,790 reviews | |||
| PriceFrom $158 | Free Cancellation | Rating 7.2 10,000 reviews | |||
| PriceFrom $241 | Free Cancellation | Rating 8.0 4,287 reviews |
Southwest Flights From Milwaukee to St. Louis
Southwest is one of the most popular airlines flying from Milwaukee to St. Louis, operating 10 flights/week on average for this route. A good Southwest flight deal for Milwaukee to St. Louis starts from $241 round-trip, up to an average price of $332. Our users have rated Southwest at 8.0/10.
Traveling to a place near St. Louis?
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Why should I use momondo to find a flight deal from Milwaukee to St. Louis?
Finding the right flight to St. Louis from Milwaukee is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.
Can I find flights from Milwaukee to St. Louis with flexible booking policies on momondo?
All flight searches from Milwaukee to St. Louis on momondo can be filtered to show those which offer flexible booking policies.
How can momondo help me find flights from Milwaukee to St. Louis?
momondo helps you find the best flight between Milwaukee and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.
I’m not ready to book a flight from Milwaukee to St. Louis right now. Can momondo alert me if prices change?
Yes. momondo can track prices for Milwaukee to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.