Cheap Flights from San Francisco to Chicago | EazAir

Flight deals from San Francisco to Chicago

Flying from San Francisco to Chicago takes roughly four hours and fifteen minutes when booking a nonstop itinerary. Passengers typically depart from San Francisco International Airport (SFO) and touch down at either O'Hare International Airport (ORD) or Chicago Midway International Airport (MDW). Transcontinental wind patterns occasionally shorten eastbound travel times to the Midwest, making the journey from Northern California to Illinois relatively quick. Multiple major carriers operate direct routes connecting San Francisco and Chicago daily. United Airlines maintains a massive hub at both SFO and O'Hare, offering the highest frequency of daily departures between these two specific locations. Southwest Airlines provides another nonstop option, primarily connecting SFO to Midway, while American Airlines also runs regular service linking the Bay Area to O'Hare. Travel demand from San Francisco to Chicago peaks during the summer months, specifically June through August, when Great Lakes weather is warmest. Another spike in passenger traffic occurs around the late November and December holidays as Northern Californians head to the Midwest to visit family. Travelers with flexible schedules often find the lightest crowds on this SFO to CHI route during late January and February, right after the holiday rush subsides.