Chicago (CHI)St. Louis (STL)
- non-stop flights:
- up to 18 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $140number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 11–16 11–16 11–16 11–16 11–16 11–16 11–16 7–17 7–16 7–16 7–17 7–18 7–17 7–18 1 1 1 1 1 1 1 0 1 0 0 0 1 0 Chicago O'Hare (ORD)St. Louis (STL)
- non-stop flights:
- up to 18 per day
- flight duration:
- at least
- Sun
- Mon
- Tue
- Wed
- Thu
- Fri
- Sat
from $140number of non-stop flights per airline and day of the week Sun Mon Tue Wed Thu Fri Sat 11–16 11–16 11–16 11–16 11–16 11–16 11–16 7–17 7–16 7–16 7–17 7–18 7–17 7–18 1 1 1 1 1 1 1 0 1 0 0 0 1 0