American Airlines flights from Chicago to San Francisco (CHI - SFO)

• Can I get a flight from Chicago to San Francisco on American Airlines for under $300?

  American Airlines offers 23 flights from Chicago to San Francisco for under $300. Prices vary by date and time. To see all prices and select your dates, click here.

• How do most travelers feel about American Airlines?

  Cheapflights users who travel with American Airlines (a popular airline from Chicago to San Francisco) have rated them a 6.2/10. This rating comes from 4,088 reviews. If you are looking to travel CHI-SFO, search your dates above.

Currently, the most affordable month to book a American Airlines flight from Chicago to San Francisco in September, with an average price of $268. Conversely, traveling with American Airlines from Chicago to San Francisco in June will be the most expensive, with an average cost of $383. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).