Economy Flex offers preferred seating and same-day flight changes, adding value over Light fares.
Lufthansa's Free Neighbor Seat option allows extra space for a fee, enhancing comfort.
Most accurate provider | Mytrip 3 stars |
---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $97 (Southwest) |
One-way from | $39 (Southwest) |
Popular in | April |
Cheapest in | August |
Average price | $264 |
Good round-trip deal | $289 or less |
Good one-way deal | $113 or less |
Fly from
Fly to
Route
Depart
Return
Price
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
mié. 7/9
7:20 am-11:00 am
1 stop3h 40m
Chicago Midway
mié. 7/16
6:00 am-10:50 am
1 stop4h 50m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
mié. 7/9
6:20 am-12:45 pm
1 stop6h 25m
Chicago O'Hare Intl
mié. 7/16
1:50 pm-7:55 pm
1 stop6h 05m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
mar. 8/19
9:17 am-10:47 am
Nonstop1h 30m
Chicago O'Hare Intl
jue. 9/4
2:20 pm-3:44 pm
Nonstop1h 24m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
vie. 6/20
5:15 pm-7:40 am
1 stop14h 25m
Chicago O'Hare Intl
lun. 6/23
8:25 am-8:10 pm
1 stop11h 45m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
lun. 8/11
6:06 am-7:30 am
Nonstop1h 24m
Chicago O'Hare Intl
sáb. 8/16
6:47 pm-8:16 pm
Nonstop1h 29m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
mié. 6/18
2:15 pm-6:41 pm
1 stop4h 26m
Chicago Midway
mié. 6/25
9:24 am-1:26 pm
1 stop4h 02m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
mié. 7/23
6:40 am-10:16 am
1 stop3h 36m
Chicago O'Hare Intl
mar. 8/5
6:00 am-10:33 am
1 stop4h 33m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
mar. 6/10
5:35 pm-12:10 am
1 stop6h 35m
Chicago O'Hare Intl
sáb. 6/14
5:01 am-2:07 pm
1 stop9h 06m
St. LouisChicago
STL - MDW
STLMDW
Lambert-St Louis
jue. 6/12
2:36 pm-11:18 pm
1 stop8h 42m
Chicago Midway
dom. 6/15
7:40 am-7:24 pm
1 stop11h 44m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
jue. 5/29
5:45 pm-12:20 am
1 stop6h 35m
Chicago O'Hare Intl
jue. 6/5
8:25 am-8:10 pm
1 stop11h 45m
Provider | Price Accuracy | Trust Score* |
---|---|---|
Price Accuracy1 star | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*2 stars | |
Price Accuracy3 stars | Trust Score*3 stars | |
Price Accuracy3 stars | Trust Score*3 stars |
The price you pay for your flight from St. Louis to Chicago may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, August is the cheapest month in which you can book a flight from St. Louis to Chicago (average of $245). Flying from St. Louis to Chicago in March is currently the most expensive (average of $321). 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.
It’s optimal to fly from St. Louis to Chicago in the morning. By choosing this option you can save up to 50% on the cost of your flight, compared to a flight at noon.
Travelers seeking maximum savings on their St. Louis to Chicago flight should consider departing on Thursday evenings when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
The most flights from STL to CHI are scheduled on a Thursday (72 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (30 on average).
In terms of precipitation, rainfall in Chicago ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago when rainfall is around 1.7 in.
If weather is an important factor for your trip to Chicago, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
Gina,Apr 2025
LAS - DEN
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
Gina,Apr 2025
LAS - DEN
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
Gina,Apr 2025
LAS - DEN
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
Gina,Apr 2025
LAS - DEN
Boarding
Entertainment
Overall
Crew
Comfort
Food
Reviews
Gina,Apr 2025
LAS - DEN
Airline | Cheapest | Average | Flexibility | On-time |
---|---|---|---|---|
Cheapest$115 | Average$267 | FlexibilityNo cancel fee | On-time71% | |
Cheapest$118 | Average$184 | FlexibilityNo cancel fee | On-timeN/A | |
Cheapest$125 | Average$303 | FlexibilityNo cancel fee | On-time69% | |
Cheapest$168 | Average$283 | FlexibilityNo cancel fee | On-time63% |