$107 Find Cheap Flights from St. Louis to Milwaukee - Compare and Save

Among airlines operating St. Louis to Milwaukee flights:

• Southwest: offers free seat selection

Extra legroom and free seat selection availability depends on fare class and route.

Only Southwest operates flights between St. Louis and Milwaukee.

Flights from St. Louis to Milwaukee usually depart from Lambert-St Louis (STL) and arrive at Milwaukee-Mitchell (MKE).

Here are some options for this route, based on selected ticket types and cabin classes:

• Southwest: a cabin bag in Economy Class class

Bag allowance can vary by ticket type, cabin class, route and airline, so travelers should check the fare details before booking.

Only Economy Class is available on flights from St. Louis to Milwaukee.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $193 round-trip via Orlando (MCO), compared to $391 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $45–$90 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

The Boeing 737 MAX 8 family is used most often on this route, operated mainly by Southwest. Other aircraft seen on the route include Boeing 737-800 Passenger/BBJ2 (winglets) variants.

One-stop flights from St. Louis to Milwaukee most commonly connect through:

• Chicago O'Hare Intl (ORD) - 88% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 9% of one-stop connections
• Orlando (MCO) - 3% of one-stop connections

Chicago O'Hare Intl (ORD) handles the largest share of one-stop connections on this route.

On the St. Louis to Milwaukee route, being flexible with your departure day can save you up to 53%. Saturday is the cheapest day at $327 round-trip on average, while Monday is the most expensive at $691: a $364 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Morning is the busiest departure period on St. Louis to Milwaukee flights, with 50% of flights leaving in that window. Night departures account for 50%, afternoon flights for 0%, and evening flights for 0%.

Some of the most popular sights in Milwaukee are Fiserv Forum, Baird Center and Pabst Theater. These are among the most viewed places in Milwaukee on KAYAK.

A nonstop flight from St. Louis to Milwaukee takes 1h 14m, covering 317 miles.

These are the earliest and latest flight times available from St. Louis to Milwaukee:

• Earliest: departs at 8:20 am and lands at 9:34 am
• Latest: departs at 10:00 pm and lands at 11:14 pm.

The flight takes about 1h 14m.

No, a passport is not required for this domestic route, but you will need a real ID-compliant driver's license, a state ID, or another TSA-accepted form of identification.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $267 to $1,116. That means the highest observed fare was about 4x higher than the lowest one.

One-way fares from St. Louis to Milwaukee are currently lower than usual. Average one-way flight prices are about $134, which is 41% below the typical average for this route.

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 3h 46m, compared with 4h 14m via Detroit Metropolitan Wayne County (DTW) and 13h 18m via Orlando (MCO).

Milwaukee-Mitchell Airport (MKE) hosts 5 major car rental companies, with daily rates starting from around $25 for economy cars. Top options include:
· Dollar
· Budget
· Alamo
· Hertz
· Sixt

Round-trip flights from St. Louis to Milwaukee range from $326 to $499, with an average of $381 over the past 12 months. Anything below $326 counts as a good deal.