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

American Airlines and United Airlines have non-stop flights from ORD to STL. Southwest operates direct flights between MDW and STL. Delta, American Airlines, and United are among the airlines that fly from Chicago to STL with one stop. One-stop flights depart from both ORD and MDW, depending on the airline. Some layover cities include Charlotte (CLT), Minneapolis (MSP), Atlanta (ATL), and Denver (DEN).

ORD has a family lounge where kids can play. This lounge includes colorful seating, stroller parking, and device-charging stations. MDW does not have a family lounge, but almost all the restaurants have high chairs and kids' menus available. Also, a lot of the restaurants have huge windows looking out onto the airfield if your kids would enjoy watching the planes.

ORD has two USO lounges that welcome active-duty US military personnel and their families. One USO is pre-security in Terminal 2 on the Mezzanine level, and the other is post-security in Terminal 3 on the G Concourse. Both lounges are open from 9 am to 5 pm. The USO at Midway is open from 8 am to 8 pm, and is located on Concourse C, post-security.

From STL, you can take the light rail Red Line to downtown St. Louis. At STL, to catch the Metro from Terminal 1, you go to exit door 1 on the upper level. From Terminal 2, you can catch the Metro from any level of the parking garage. Go Best Express shuttles offer shared rides straight to your door in St. Louis. These shuttles depart STL every 30min from 6 am until 10 pm.

Among airlines operating Chicago to St. Louis flights:

• United Airlines: offers extra legroom; offers free seat selection
• American Airlines: offers extra legroom; offers free seat selection
• Southwest: offers free seat selection

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

3 airlines operate flights between Chicago and St. Louis. The airlines offering nonstop flights on this route include:

• United Airlines
• American Airlines
• Southwest

Flights from Chicago to St. Louis may depart from several airports in Chicago area, including Chicago Midway (MDW), Chicago O'Hare Intl (ORD) and Chicago Greater Rockford (RFD). Flights usually arrive at Lambert-St Louis (STL).

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

• United Airlines: a cabin bag and a checked bag in Economy Class
• American Airlines: a cabin bag and a checked bag in Economy Class
• 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.

Three cabin classes are available on flights from Chicago to St. Louis:

• Economy Class
• Business Class
• First Class

On this route, layover flights are cheaper than nonstop options on average. Layover fares average $191 round-trip via Atlanta Hartsfield-Jackson (ATL), compared to $346 for nonstop.

There is no standard. Checked-bag policies vary by airline on this route. Most carriers charge $40–$100 for the first checked bag in economy. Premium fares and elite-status bookings typically include a free checked bag.

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

• Quincy Regional (UIN) - 70% of one-stop connections
• Chicago O'Hare Intl (ORD) - 11% of one-stop connections
• Atlanta Hartsfield-Jackson (ATL) - 7% of one-stop connections
• Detroit Metropolitan Wayne County (DTW) - 7% of one-stop connections

Quincy Regional (UIN) handles the largest share of one-stop connections on this route.

On the Chicago to St. Louis route, being flexible with your departure day can save you up to 56%. Saturday is the cheapest day at $237 round-trip on average, while Sunday is the most expensive at $528: a $291 difference. Cheaper weekend fares like these are typical of routes dominated by weekday business travel.

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 to St. Louis route, 19% of flights were delayed in the past 3 months, with delays averaging 2 hours 2 minutes.

Morning is the busiest departure period on Chicago to St. Louis flights, with 35% of flights leaving in that window. Afternoon departures account for 30%, evening flights for 25%, and night flights for 10%.

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 to St. Louis:

• Earliest: departs at 5:40 am and lands at 7:06 am
• Latest: departs at 11:05 pm and lands at 12:31 am.

The flight takes about 1h 26m.

Last-minute fares on this route - booked within 2 weeks of departure - run 59% above the route average of $344. Book 24 weeks before departure for the lowest fares.

A nonstop flight from Chicago to St. Louis takes 1h 26m, covering 260 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.

One-way fares from Chicago to St. Louis are currently lower than usual. Average one-way flight prices are about $59, which is 77% below the typical average for this route.

Southwest is slightly above the route average for timely arrivals, while United Airlines has a lower on-time arrival rate. On-time arrival rates on Chicago to St. Louis flights are:

• Southwest: 86% on time
• United Airlines: 80% on time
• American Airlines: 78% on time

Overall, flights on this route are on time 81% of the time on average.

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.

Flying via Chicago O'Hare Intl (ORD) gives the shortest average 1-stop total travel time at 4h 04m, compared with 4h 15m via Detroit Metropolitan Wayne County (DTW) and 4h 16m via Quincy Regional (UIN).

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 to St. Louis range from $234 to $533, with an average of $344 over the past 12 months. Anything below $234 counts as a good deal.

American Airlines is the only airline on the Chicago to St. Louis route offering in-flight Wi-Fi. Pricing depends on fare class.