$149 Find Cheap Flights from San Francisco to Chicago

The cheapest month for flights from San Francisco to Chicago O'Hare Intl Airport is January, where tickets cost $503 (return) on average. On the other hand, the most expensive months are December and November, where the average cost of round-trip tickets is $749 and $737 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. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

In the past 3 days, the cheapest return tickets from San Francisco to Chicago were found on Alaska Airlines ($296) and United Airlines ($311).

San Francisco and Chicago are connected by different airlines. The airlines that fly that route the most regularly are United Airlines (72 flights per week), American Airlines (41 flights per week), and Alaska Airlines (7 flights per week).

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 15 and 18 direct flights that take off from San Francisco and land in Chicago O'Hare Intl Airport, with an average flight time of 4h 22m. The most common departure time is 23:00 and most flights take off in the morning. Each week, there are 120 flights. The most frequent day of departure is Monday, when 15% of all weekly flights depart. The fewest flights depart on a Saturday.

Direct flights from San Francisco generally make it to Chicago in 4h 13m. The flying distance between the two cities is 4,767 km.

Early birds can take the earliest flight from San Francisco at 05:00 and will be landing in Chicago O'Hare Intl Airport at 11:27.

If you prefer to fly at night, the latest flight from San Francisco to Chicago O'Hare Intl Airport jets off at 23:59 and lands at 06:19.