Direct (nonstop) flights from Chicago to San Antonio
1 airline flys nonstop from Chicago Midway International (MDW) to San Antonio International (SAT). It's 1,037 miles (1,669 km), about 2h 45m in the air. Operated by Southwest Airlines.
Southwest Airlines
Route data last updated: May 31, 2026
Airlines with non-stop flights
WN
Southwest Airlines
Alternative Routes
Other ways to fly from Chicago to San Antonio with one stop · direct emits 175 kg CO₂ per passenger
Looking for the return flight?
SAT → MDW: Flights from San Antonio to ChicagoOther direct flights from Chicago
Direct flights from San Antonio (SAT)
Frequently Asked Questions
How long is the direct flight from Chicago to San Antonio?
A nonstop flight from Chicago (MDW) to San Antonio (SAT) takes approximately 2 hours and 45 minutes. The distance is 1,037 miles (1,669 km).
Which airlines fly nonstop from Chicago to San Antonio?
Just Southwest Airlines.
Is there a nonstop flight from Chicago to San Antonio?
Yes. 1 airline: Southwest Airlines.
How far is Chicago from San Antonio?
The flight distance from Chicago to San Antonio is 1,037 miles (1,669 km), measured as the great-circle (shortest air) distance. That's roughly the same distance as New York to Miami.
What type of aircraft flies from Chicago to San Antonio?
At 2h 45m, this route typically uses narrow-body or mid-range jets — Boeing 737 MAX or Airbus A320neo. Varies by airline.
What is the carbon footprint of a flight from Chicago to San Antonio?
Roughly 175 kg CO2 per passenger one-way. That's about the same as driving 875 km.
Is the return flight from San Antonio 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 San Antonio?
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.