FFL Helper

FFL Helper / St Louis / Chicago / September 2026

STL → CHI · 2026-09

St Louis to Chicago in September 2026

Dated one-way fares from St Louis to Chicago in September 2026. Use the calendar to see which days are cheaper.

Lowest this month $56
Highest this month $202
Sample fare $56
Airports STL–ORD
Search September 2026 tickets

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Other months: August 2026 · September 2026 · October 2026 · Full route

September 2026 price calendar

September 2026

From $56 · up to $202

Mon
Tue
Wed
Thu
Fri
Sat
Sun
1
2 $151 3 $160 4 $160 5 $170 6 $171 7 $123 8 $123 9 $123 10 $123 11 $75 12 $63 13 $202 14 $172 15 $172 16 $172 17 $172 18 $172 19 $172 20 $143 21 $102 22 $102 23 $62 24 $62 25 $82 26 $56 27 $184 28 $63
29
30

Dated fares

Chicago CHI

$56

Sep 26, 5:00am · 1h 29m · 0 stops

STL → ORD · American Airlines

Tickets

Chicago CHI

$62

Sep 23, 12:50pm · 1h 5m · 0 stops

STL → MDW · Southwest Airlines

Tickets

Chicago CHI

$62

Sep 24, 2:20pm · 1h 10m · 0 stops

STL → MDW · Southwest Airlines

Tickets

Chicago CHI

$63

Sep 28, 6:05am · 1h 5m · 0 stops

STL → MDW · Southwest Airlines

Tickets

Chicago CHI

$63

Sep 12, 8:25am · 1h 5m · 0 stops

STL → MDW · Southwest Airlines

Tickets

Chicago CHI

$75

Sep 11, 5:00am · 1h 29m · 0 stops

STL → ORD · American Airlines

Tickets

Chicago CHI

$82

Sep 25, 8:50pm · 1h 10m · 0 stops

STL → MDW · Southwest Airlines

Tickets

Booking STL to CHI in September 2026

This page is only September 2026 on the St Louis to Chicago route. Open the full route if you want the next months side by side.

Prices move as seats sell. Confirm the live itinerary before you book St Louis to Chicago in September 2026.