$59 Find Cheap Flights from Chicago Midway Airport to St. Louis - Compare and Save

Among airlines operating Chicago Midway Airport to St. Louis flights:

• Southwest: offers free seat selection

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

Only Southwest operates flights between Chicago Midway Airport and St. Louis.

Flights from Chicago Midway Airport to St. Louis usually depart from Chicago Midway (MDW) and arrive at Lambert-St Louis (STL).

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

• Southwest: a cabin bag and a checked bag in Economy 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 Chicago Midway Airport to St. Louis.

On this route, nonstop flights are cheaper than layover options on average. Nonstop fares average $361 round-trip, compared to $401 via a layover through Detroit Metropolitan Wayne County (DTW).

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 and United Airlines. Other aircraft seen on the route include Boeing 737-800 variants.

Most connecting flights from Chicago Midway Airport to St. Louis pass through Detroit Metropolitan Wayne County (DTW), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

Yes. Being flexible with your travel dates can save you up to 72% on the Chicago Midway Airport to St. Louis route. Thursday is the cheapest departure day at $207 round-trip on average, while Sunday is the most expensive at $723, a difference of $516. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

A flight is considered delayed when it departs 15 minutes or more after its scheduled time. This is the standard used by the US Department of Transportation and most airline industry reporting. On the Chicago Midway Airport to St. Louis route, 14% of flights were delayed in the past 3 months, with delays averaging 1 hour 49 minutes.

Morning is the busiest departure period on Chicago Midway Airport to St. Louis flights, with 50% of flights leaving in that window. Afternoon departures account for 25%, evening flights for 25%, and night flights for 0%.

Some of the most popular sights in St. Louis are Downtown St. Louis, Busch Stadium and Enterprise Center. These are among the most viewed places in St. Louis on KAYAK.

These are the earliest and latest flight times available from Chicago Midway Airport to St. Louis:

• Earliest: departs at 5:40 am and lands at 6:55 am
• Latest: departs at 11:00 pm and lands at 12:15 am.

The flight takes about 1h 15m.

A nonstop flight from Chicago Midway Airport to St. Louis takes 1h 15m, covering 251 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.

Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about $154 to $1,451. That means the highest observed fare was about 9x higher than the lowest one.

One-way fares from Chicago Midway Airport to St. Louis are currently lower than usual. Average one-way flight prices are about $61, which is 76% below the typical average for this route.

Southwest is the only airline operating Chicago Midway Airport to St. Louis flights. 86% of its flights are on time.

Morning flights have the fewest delays on this route. Delays tend to pile up throughout the day as one late flight pushes the next, so earlier departures are usually more reliable.

Lambert-St Louis Airport (STL) hosts 5 major car rental companies, with daily rates starting from around $31 for economy cars. Top options include:
• Hertz
• Budget
• Alamo
• Enterprise Rent-A-Car
• Payless

Round-trip flights from Chicago Midway Airport to St. Louis range from $217 to $691, with an average of $361 over the past 12 months. Anything below $217 counts as a good deal.