
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $208 (Delta) |
One-way from | $64 (Kiwi.com) |
Popular in | January |
Cheapest in | September |
Average price | $340 |
Good round-trip deal | $491 or less |
Good one-way deal | $248 or less |
Fly from
Fly to
Route
Depart
Return
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Sat 7/11
9:20 am-10:52 am
Nonstop1h 32m
Chicago O'Hare Intl
Tue 7/14
10:00 pm-11:29 pm
Nonstop1h 29m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Tue 6/30
5:33 pm-7:04 pm
Nonstop1h 31m
Chicago O'Hare Intl
Mon 7/6
10:00 pm-11:29 pm
Nonstop1h 29m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Wed 6/24
6:00 am-7:30 am
Nonstop1h 30m
Chicago O'Hare Intl
Fri 6/26
8:55 am-10:29 am
Nonstop1h 34m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Tue 7/21
10:19 am-4:23 pm
1 stop6h 04m
Chicago O'Hare Intl
Wed 7/22
8:52 am-1:05 pm
1 stop4h 13m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Tue 6/23
1:59 pm-8:31 pm
1 stop6h 32m
Chicago O'Hare Intl
Wed 6/24
2:07 pm-11:23 pm
2 stops9h 16m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Sun 7/19
6:00 am-7:30 am
Nonstop1h 30m
Chicago O'Hare Intl
Thu 8/6
10:40 am-12:11 pm
Nonstop1h 31m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Fri 7/31
1:13 pm-2:43 pm
Nonstop1h 30m
Chicago O'Hare Intl
Sun 8/2
10:40 am-12:11 pm
Nonstop1h 31m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Tue 7/21
5:10 am-12:19 pm
1 stop7h 09m
Chicago O'Hare Intl
Wed 7/22
7:04 am-8:31 am
Nonstop1h 27m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Wed 7/1
6:21 am-1:00 pm
2 stops6h 39m
Chicago O'Hare Intl
Thu 7/2
1:40 pm-8:39 pm
1 stop6h 59m
St. LouisChicago
STL - ORD
STLORD
Lambert-St Louis
Wed 6/10
7:22 am-9:00 am
Nonstop1h 38m
Chicago O'Hare Intl
Sun 6/14
10:40 am-12:11 pm
Nonstop1h 31m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
To ensure you get the cheapest price possible for a flight from St. Louis to Chicago O'Hare Intl Airport, you should look to book at least 74 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
Currently, September is the cheapest month in which you can book a flight from St. Louis to Chicago O'Hare Intl Airport (average of $211). Flying from St. Louis to Chicago O'Hare Intl Airport in January is currently the most expensive (average of $399). 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 typically best to fly out from St. Louis to Chicago O'Hare Intl Airport in the morning. Doing so could potentially save you 45% on the flight price compared to flying at noon, which is usually more expensive.
Travelers seeking maximum savings on their St. Louis to Chicago O'Hare Intl Airport flight should consider departing on Saturday mornings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Boarding
Entertainment
Food
Comfort
Overall
Crew
Reviews
Anonymous,Oct 2025
YUL - ORD
Boarding
Entertainment
Food
Comfort
Overall
Crew
Reviews
Anonymous,Oct 2025
YUL - ORD
Boarding
Entertainment
Food
Comfort
Overall
Crew
Reviews
Anonymous,Oct 2025
YUL - ORD
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$97 | Average$315 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$117 | Average$364 | FlexibilityNo cancel fee | On-time69% |