£99 Find Cheap Flights from San Francisco to Chicago – Compare and Save

The cheapest month for flights from San Francisco to Chicago O'Hare Intl Airport is January, where tickets cost £278 (return) on average. On the other hand, the most expensive months are June and July, where the average cost of round-trip tickets is £375 and £357 respectively.

To get a below average price on the flight from San Francisco to Chicago O'Hare Intl Airport, you should book around 4 weeks before departure, which saves you about 37% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 10 weeks before departure.

Weekly flights between San Francisco and Chicago historically see delays in approximately 10% of cases, with the average delay over the past year being 188 minutes.

Typically, flights leaving in the morning tend to face fewer delays, whereas flights in the evening have historically encountered delays more often.

Statistically, Tuesday is the day of the week with the fewest delays on this flight route, while Sunday has typically experienced more delays than other days.

Based on our data, United Airlines have experienced the fewest delays on this route in the past 12 months, with only about 9% of their flights encountering any delays.

There is only one cabin class option available for the route, which is Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

Each day, there are between 20 and 21 direct flights that take off from San Francisco and land in Chicago O'Hare Intl Airport, with an average flight time of 4h 30m. The most common departure time is 16:00 and most flights take off in the afternoon. Each week, there are 144 flights. The most frequent day of departure is Wednesday, when 15% of all weekly flights depart. The fewest flights depart on a Monday.