Flights San Francisco → Chicago — September 14, 2026

One way · Economy · 1 adult · price per person

The cheapest itinerary observed for Monday, September 14, 2026 on the San Francisco–Chicago route: 1 stop itinerary (2 flights) via Las Vegas Harry Reid (LAS), from San Francisco International (SFO) to Chicago O'Hare (ORD), first flight Frontier Airlines F94156, departs 8:24 PM, arrives 5:38 AM the next day, total travel time 7h 14m including layovers, flight time 5h 34m (layovers excluded), $185 per person. Fare as listed by Aviasales: carry-on bag not included (personal item only), checked bag not included, changes not allowed, non-refundable. Price found in an Aviasales search on September 7, 2026 and read by AirSource on September 10, 2026, 20:48 UTC: it is not guaranteed and is confirmed on Aviasales at booking time. The cheapest direct flight observed: American Airlines AA2113, from San Francisco International (SFO) to Chicago O'Hare (ORD), departs 10:46 PM, arrives 5:00 AM the next day, direct, 4h 14m, $246 per person. Fare as listed by Aviasales: carry-on bag included, checked bag not included, changes not allowed, non-refundable.