Cheapest upcoming dates
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Airlines Flying This Route
AA
AS
F9
UA
Airports on this route
Flying from Chicago
- ORD
O'Hare International Airport
Chicago
Best time to fly
Among the months with available fare data, November had the lowest observed fare, from $126.
San Francisco is mildest and driest from April to November.
Based on typical climate for the destination, not a forecast.
Typical climate in San Francisco
Average daily highs and lows in San Francisco, and how often it rains.
Warmest month
Aug, around 24°C
Mildest months
Apr to Nov
Wettest month
Dec, about 13 rainy days
- Jan: average high 15°C, average low 8°C, 11 days of rain.
- Feb: average high 15°C, average low 7°C, 8 days of rain.
- Mar: average high 16°C, average low 8°C, 13 days of rain.
- Apr: average high 18°C, average low 9°C, 4 days of rain.
- May: average high 19°C, average low 10°C, 4 days of rain.
- Jun: average high 22°C, average low 12°C, 0 days of rain.
- Jul: average high 22°C, average low 13°C, 0 days of rain.
- Aug: average high 24°C, average low 14°C, 0 days of rain.
- Sep: average high 24°C, average low 14°C, 2 days of rain.
- Oct: average high 23°C, average low 12°C, 2 days of rain.
- Nov: average high 18°C, average low 9°C, 6 days of rain.
- Dec: average high 15°C, average low 8°C, 13 days of rain.
More for your trip
Everything else your trip needs, compared in one place.
More routes from Chicago
The return route
Tips for Cheaper Flights
Book Early
For flights from Chicago to San Francisco, booking 2-3 months in advance typically offers the best prices.
Fly Mid-Week
Tuesday to Thursday flights are often cheaper than weekend departures on this route.
Compare All Options
Tripzle compares prices from 4 airlines so you always find the best deal.
Be Flexible
Shifting your dates by a day or two can save significantly on Chicago to San Francisco flights.
Frequently Asked Questions
A typical flight from Chicago to San Francisco takes about 4h 55m.
Yes, direct flights are available from Chicago to San Francisco, taking approximately 4h 55m.
4 airlines operate this route, including AA, AS, F9, UA.
Among the months with available fare data, November had the lowest observed fares from Chicago to San Francisco.