O'Hare International Airport
17 miles (27 km) from the city centre. 84.9 million passengers in 2025
| How | Route | Time | Cost |
|---|---|---|---|
| Train | CTA Blue Line to the Loop, runs 24 hours | about 42m | $5 |
3 airlines fly nonstop from San Francisco to Chicago.
Checking today’s fares with the airlines.
| Airline | From | To |
|---|---|---|
| American Airlines | SFO San Francisco International Airport | ORD O'Hare International Airport |
| Southwest Airlines | SFO San Francisco International Airport | MDW Midway International Airport |
| United Airlines | SFO San Francisco International Airport | ORD O'Hare International Airport |
Nonstop service as of October 2026. Airlines change schedules seasonally.
17 miles (27 km) from the city centre. 84.9 million passengers in 2025
| How | Route | Time | Cost |
|---|---|---|---|
| Train | CTA Blue Line to the Loop, runs 24 hours | about 42m | $5 |
12 miles (19 km) from the city centre. 19.4 million passengers in 2025
| How | Route | Time | Cost |
|---|---|---|---|
| Train | CTA Orange Line to the Loop (all day, not overnight) | about 22m | $2.50 |
Domestic travel within the United States: no passport or visa is needed, but adults must show a REAL ID-compliant license or another accepted ID at airport security.
Chicago is 2 hours ahead of San Francisco. Chicago uses the US dollar (USD).
Read the Chicago guide: when to go, weather, airports and tips
Nonstop flight times vary by airline and season; flights with a connection take longer.
As of October 2026, American Airlines, Southwest Airlines and United Airlines fly this route nonstop.
Nonstop flights leave from San Francisco International Airport (SFO) and arrive at O'Hare International Airport (ORD) and Midway International Airport (MDW).
About 1,855 miles (2,985 km), measured between the city centres.
Chicago is 2 hours ahead of San Francisco.
Domestic travel within the United States: no passport or visa is needed, but adults must show a REAL ID-compliant license or another accepted ID at airport security.
CTA Blue Line to the Loop, runs 24 hours, about 42 minutes, $5.
Information checked in October 2026. Schedules, fares and entry rules change, so confirm with the airline or the official source before you travel.