Direct (nonstop) flights from Chicago to San Diego
3 airlines fly nonstop from Chicago O Hare International (ORD) to San Diego International Airport (SAN). It's 1,723 miles (2,773 km), about 4h 34m in the air. Operated by American Airlines, Alaska Airlines, United Airlines.
American Airlines
Alaska Airlines
United Airlines
Route data last updated: May 30, 2026
Airlines with non-stop flights
AA
American Airlines
AS
Alaska Airlines
UA
United Airlines
Alternative Routes
Other ways to fly from Chicago to San Diego with one stop · direct emits 291 kg CO₂ per passenger
Looking for the return flight?
SAN → ORD: Flights from San Diego to ChicagoOther direct flights from Chicago
Direct flights from San Diego (SAN)
Frequently Asked Questions
How long is the direct flight from Chicago to San Diego?
A nonstop flight from Chicago (ORD) to San Diego (SAN) takes approximately 4 hours and 34 minutes. The distance is 1,723 miles (2,773 km).
Which airlines fly nonstop from Chicago to San Diego?
3 airlines: American Airlines, Alaska Airlines, United Airlines.
Is there a nonstop flight from Chicago to San Diego?
Yes. 3 airlines: American Airlines, Alaska Airlines, United Airlines.
How far is Chicago from San Diego?
The flight distance from Chicago to San Diego is 1,723 miles (2,773 km), measured as the great-circle (shortest air) distance.
What type of aircraft flies from Chicago to San Diego?
At 4h 34m, 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 Diego?
Roughly 291 kg CO2 per passenger one-way. That's about the same as driving 1,455 km.
Is the return flight from San Diego 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 Diego?
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 O Hare International for this flight?
1.5-2 hours for domestic. Add more time during holidays or busy travel weekends.