Direct (nonstop) flights from Saint Louis to Chicago
1 airline flys nonstop from Saint Louis Airport (STL) to Chicago Midway International (MDW). It's 252 miles (405 km), about 1h 5m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 24, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Saint Louis to Chicago with one stop · direct emits 47 kg CO₂ per passenger
Looking for the return flight?
MDW → STL: Flights from Chicago to Saint LouisOther direct flights from Saint Louis
Direct flights from Chicago (MDW)
Frequently Asked Questions
How long is the direct flight from Saint Louis to Chicago?
A nonstop flight from Saint Louis (STL) to Chicago (MDW) takes approximately 1 hours and 5 minutes. The distance is 252 miles (405 km).
Which airlines fly nonstop from Saint Louis to Chicago?
Just Southwest Airlines.
Is there a nonstop flight from Saint Louis to Chicago?
Yes. 1 airline: Southwest Airlines.
How far is Saint Louis from Chicago?
The flight distance from Saint Louis to Chicago is 252 miles (405 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as London to Paris.
What type of aircraft flies from Saint Louis to Chicago?
At 1h 5m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Saint Louis to Chicago?
Roughly 47 kg CO2 per passenger one-way. That's about the same as driving 235 km.
Is the return flight from Chicago to Saint Louis also nonstop?
Yes — nonstop flights run both ways. Flight time may differ slightly due to wind patterns.
When is the cheapest time to fly from Saint Louis to Chicago?
Midweek flights (Tue/Wed) outside holiday peaks are usually cheapest. 3-6 weeks ahead is a good window for this route. Use "Check Prices" above to compare.
How early should I arrive at Saint Louis Airport for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.