Direct (nonstop) flights from Chicago to Saint Louis
1 airline flys nonstop from Chicago Midway International (MDW) to Saint Louis Airport (STL). It's 252 miles (405 km), about 1h 15m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Chicago to Saint Louis with one stop · direct emits 47 kg CO₂ per passenger
Looking for the return flight?
STL → MDW: Flights from Saint Louis to ChicagoOther direct flights from Chicago
Direct flights from Saint Louis (STL)
Frequently Asked Questions
How long is the direct flight from Chicago to Saint Louis?
A nonstop flight from Chicago (MDW) to Saint Louis (STL) takes approximately 1 hours and 15 minutes. The distance is 252 miles (405 km).
Which airlines fly nonstop from Chicago to Saint Louis?
Just Southwest Airlines.
Is there a nonstop flight from Chicago to Saint Louis?
Yes. 1 airline: Southwest Airlines.
How far is Chicago from Saint Louis?
The flight distance from Chicago to Saint Louis 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 Chicago to Saint Louis?
At 1h 15m, this route typically uses narrow-body aircraft — Boeing 737 or Airbus A320. Varies by airline.
What is the carbon footprint of a flight from Chicago to Saint Louis?
Roughly 47 kg CO2 per passenger one-way. That's about the same as driving 235 km.
Is the return flight from Saint Louis to Chicago 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 Chicago to Saint Louis?
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 Chicago Midway International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.