For flying from San Francisco to Chicago, well priced - $242 onwards and round trip airfares from any airlines can be checked at:

http://www.farecompare.com/flights/Chicago-CHI/San_Francisco-SFO/market.html

http://www.lowfares.com/Cheap-Flights

The airline that has the most flights in between Chicago and San Francisco is the United Airlines. It has almost around 30 flights plying on this route.

In a week, there are almost more than 40 flights to fly you to and fro between Chicago and San Francisco.

There are around 2 carriers that operate between San Francisco and Chicago. Around 12,000 seats are available every week for you to fly to and fro between these destinations.

This is because more than 90 flights ply on this route. The largest aircraft that flies between Chicago and San Diego is the 777 that has around 275 seats. This aircraft is being carried by United Airlines.

The airline that has the most flights in between Chicago and San Francisco is the United Airlines. It has almost around 30 flights plying on this route. In a week, there are almost more than 40 flights to fly you to and fro between Chicago and San Francisco.