$123 Find Cheap Flights from St. Louis to Milwaukee - Compare and Save

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

• Earliest: departs at 7:55 am and lands at 9:10 am
• Latest: departs at 10:50 pm and lands at 12:05 am.

The flight takes about 1h 15m.

Two cabin classes are available on flights from St. Louis to Milwaukee:

• Economy Class
• First Class

A nonstop flight from St. Louis to Milwaukee takes 1h 15m, covering 317 miles.

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.

Round-trip flights from St. Louis to Milwaukee range from $337 to $553, with an average of $390 over the past 12 months. Anything below $337 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $193 round-trip via Orlando (MCO), compared to $397 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.

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%.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $245 to $1,148. That means the highest observed fare was about 5x 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 $124, which is 45% below the typical average for this route.

Milwaukee-Mitchell Airport (MKE) hosts 5 major car rental companies, with daily rates starting from around $26 for economy cars. Top options include:

• Dollar
• Hertz
• Budget
• Alamo
• Sixt

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

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

• Chicago O'Hare Intl (ORD) - 81% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 11% of one-stop connections
• Orlando (MCO) - 4% of one-stop connections
• Chicago Midway (MDW) - 4% of one-stop connections

Yes. Flexible dates can save you up to 53% on flights from St. Louis to Milwaukee. Saturday is the cheapest departure day at $327 round-trip on average, while Monday is the most expensive at $691, a difference of $364.

Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

Only Southwest operates flights between St. Louis and Milwaukee.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 3h 05m, compared with 3h 46m via Chicago O'Hare Intl (ORD) and 4h 14m via Detroit Metropolitan Wayne County (DTW).

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

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.

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 always check the fare details before booking.