$122 Find Cheap Flights from Milwaukee to St. Louis - Compare and Save

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

• Earliest: departs at 5:30 am and lands at 6:55 am
• Latest: departs at 6:35 pm and lands at 8:00 pm.

The flight takes about 1h 25m.

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

A nonstop flight from Milwaukee to St. Louis takes 1h 25m, 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 Milwaukee to St. Louis range from $347 to $496, with an average of $394 over the past 12 months. Anything below $347 counts as a good deal.

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $223 round-trip via Dallas/Fort Worth (DFW), compared to $401 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 Milwaukee to St. Louis flights, with 50% of flights leaving in that window. Afternoon departures account for 50%, evening flights for 0%, and night 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 $243 to $740. That means the highest observed fare was about 3x higher than the lowest one.

Based on prices from the last 5 days, flying between Milwaukee and St. Louis is around $243 round-trip, with a flight time of about 1h 20m. Recent bus fares are around $118, with a trip time of about 14h 15m. Compared with flying, recent bus fares are roughly 52% lower. However, taking the bus takes about 12+ hours longer each way.

One-way fares from Milwaukee to St. Louis are currently lower than usual. Average one-way flight prices are about $145, which is 34% below the typical average for this route.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates averaging $78 for economy cars. Top options include:

• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

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

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

• Chicago O'Hare Intl (ORD) - 70% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 17% of one-stop connections
• Nashville Intl (BNA) - 3% of one-stop connections
• Dallas/Fort Worth (DFW) - 3% of one-stop connections

Yes. Flexible dates can save you up to 23% on flights from Milwaukee to St. Louis. Wednesday is the cheapest departure day at $351 round-trip on average, while Sunday is the most expensive at $455, a difference of $104.

KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Only Southwest operates flights between Milwaukee and St. Louis.

Flying via Chicago Midway (MDW) gives the shortest average 1-stop total travel time at 3h 09m, compared with 3h 42m via Nashville Intl (BNA) and 3h 49m via Chicago O'Hare Intl (ORD).

Some of the most popular sights in St. Louis are Busch Stadium, Enterprise Center and America's Center Convention Complex. These are among the most viewed places in St. Louis on KAYAK.

Among airlines operating Milwaukee to St. Louis 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.