Security lines at STL are straightforward, typically taking 5-10 minutes off-peak. Check real-time wait times online before heading to the airport.

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $97 (Southwest) |
One-way from | $49 (Southwest) |
Popular in | February |
Cheapest in | December |
Average price | $344 |
Good round-trip deal | $307 or less |
Good one-way deal | $158 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Wed 12/31
4:25 pm-5:35 pm
Nonstop1h 10m
Chicago Midway
Thu 1/1
8:25 am-9:40 am
Nonstop1h 15m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Thu 12/4
12:04 pm-10:12 pm
1 stop10h 08m
Chicago Midway
Mon 12/8
3:10 pm-10:33 pm
1 stop7h 23m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Wed 12/3
2:15 pm-3:20 pm
Nonstop1h 05m
Chicago Midway
Thu 12/4
9:05 pm-10:20 pm
Nonstop1h 15m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Thu 2/12
5:00 pm-10:35 pm
1 stop5h 35m
Chicago Midway
Sun 2/15
5:50 am-7:10 am
Nonstop1h 20m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Wed 12/3
2:15 pm-3:20 pm
Nonstop1h 05m
Chicago Midway
Mon 1/19
11:35 am-5:00 pm
1 stop5h 25m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Sat 12/13
2:15 pm-3:20 pm
Nonstop1h 05m
Chicago Midway
Wed 12/17
6:20 pm-10:10 pm
1 stop3h 50m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Wed 12/10
11:40 am-4:34 pm
1 stop4h 54m
Chicago Midway
Wed 12/17
12:50 pm-6:33 pm
1 stop5h 43m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Tue 2/24
6:35 am-12:48 pm
1 stop6h 13m
Chicago Midway
Wed 2/25
6:40 pm-11:38 pm
1 stop4h 58m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Wed 2/18
8:20 am-9:30 am
Nonstop1h 10m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
Sun 2/15
9:10 am-10:20 am
Nonstop1h 10m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
Currently, November is the cheapest month in which you can book a flight from St. Louis to Chicago Midway Airport (average of $77). Flying from St. Louis to Chicago Midway Airport in September is currently the most expensive (average of $257). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
When flying from St. Louis to Chicago Midway Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 9% versus a flight at noon.
Travelers seeking maximum savings on their St. Louis to Chicago Midway Airport flight should consider departing on Wednesday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Comfort
Food
Entertainment
Overall
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
Comfort
Food
Entertainment
Overall
Boarding
Crew
Reviews
Mike,Aug 2025
OKC - AUS
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$325 | FlexibilityNo cancel fee | On-time63% |