Cheap flights from Milwaukee to St. Louis from $54
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 12/7. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Find the cheapest flights from Milwaukee to St. Louis
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Cheap direct flights
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.American Airlines flights from Milwaukee to St. Louis
Our best American Airlines deals on Milwaukee to St. Louis flight tickets
Southwest flights from Milwaukee to St. Louis
Our best Southwest deals on Milwaukee to St. Louis flight tickets
momondo Fare Finder
Use the filters below to find and compare flights from Milwaukee to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Tue 11/10
8:10 am-1:40 pm
1 stop5h 30m
Lambert-St Louis
Thu 11/12
5:10 pm-11:35 pm
1 stop6h 25m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Thu 10/29
5:00 am-10:51 am
1 stop5h 51m
Lambert-St Louis
Mon 11/2
5:05 am-11:08 am
1 stop6h 03m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Tue 11/3
2:55 pm-7:22 pm
1 stop4h 27m
Lambert-St Louis
Tue 11/10
1:20 pm-6:34 pm
1 stop5h 14m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Tue 11/10
11:40 am-5:25 pm
1 stop5h 45m
Lambert-St Louis
Thu 11/12
9:50 pm-11:10 pm
Nonstop1h 20m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Tue 11/3
11:30 am-5:20 pm
1 stop5h 50m
Lambert-St Louis
Tue 11/10
8:15 pm-9:30 pm
Nonstop1h 15m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Tue 11/10
7:45 am-1:45 pm
2 stops6h 00m
Lambert-St Louis
Thu 11/12
5:10 pm-11:35 pm
1 stop6h 25m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Thu 10/29
5:00 am-10:51 am
1 stop5h 51m
Lambert-St Louis
Mon 11/2
5:05 am-11:08 am
1 stop6h 03m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Fri 10/30
6:18 pm-9:40 pm
1 stop3h 22m
Lambert-St Louis
Mon 11/2
9:40 am-2:58 pm
1 stop5h 18m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Thu 11/5
6:47 am-10:32 am
1 stop3h 45m
Lambert-St Louis
Mon 11/9
7:30 am-11:28 am
1 stop3h 58m
MilwaukeeSt. Louis
MKE Milwaukee-Mitchell - STL Lambert-St Louis
MKESTL
Milwaukee-Mitchell
Thu 12/31
7:45 am-12:26 pm
1 stop4h 41m
Lambert-St Louis
Sun 1/3
5:20 am-10:03 am
1 stop4h 43m
See travel insights to St. Louis from
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, October 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 $306. The month of August is another great option to travel to St. Louis, with average flight prices from Milwaukee averaging around $334.
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 Wednesday when prices can be found for as low as $364. 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 Sunday because tickets tend to average around $529. 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 at noon is the least expensive time of day to depart. momondo users have found prices as low as $331 when looking at flights departing at noon. In the morning is when there is more demand to fly to St. Louis, so prices are often more expensive at around $436 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 to St. Louis flights?
There is only 1 cabin class available to choose from on Milwaukee to St. Louis flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.
Can stopping save me money on Milwaukee to St. Louis flights?
You could potentially save up to 26% on your flight if you consider stops on a Milwaukee to St. Louis flight.
What is the cheapest airline that flies from Milwaukee-Mitchell to Lambert-St Louis?
Southwest and Delta are the most popular carriers operating from Milwaukee-Mitchell to Lambert-St Louis
What airlines fly to St. Louis?
United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to St. Louis from Milwaukee according to our data. United Airlines is the first choice among our users, with 62% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 5 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.
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
Frequently asked questions about flying 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 2 as of October 2026.
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 14.35% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 10.65%, Boeing 737-800 at 7.41%, and Boeing 737 at 7.41%.
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 (88% of total bookings). The next most popular airline is United Airlines (12%).
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 $174 | Free Cancellation | Rating 7.4 10,332 reviews | |||
| PriceFrom $283 | Free Cancellation | Rating 7.9 4,228 reviews |
Southwest Flights From Milwaukee to St. Louis
Southwest is one of the most popular airlines flying from Milwaukee to St. Louis, operating 6 flights/week on average for this route. A good Southwest flight deal for Milwaukee to St. Louis starts from $283 round-trip, up to an average price of $397. Our users have rated Southwest at 7.9/10.
Traveling to a place near St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsWhy use momondo?
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.