Price observed over the last 3 months for a round trip.
Compare all flight tickets and find cheap flights from Chicago to San Francisco
The cheapest flights right now
Chicago – San Francisco
Outbound – Nov 5, 2026
direct
4h 50m Return – Nov 12, 2026
direct
4h 25m $347
3 days ago
Chicago – San Francisco
Outbound – Nov 5, 2026
direct
4h 44m Return – Nov 12, 2026
direct
4h 15m $345
today
Chicago – San Francisco
Outbound – Nov 5, 2026
direct
4h 50m Return – Nov 11, 2026
direct
4h 28m $344
3 days ago
Chicago – San Francisco
Outbound – Nov 5, 2026
direct
4h 55m Return – Nov 12, 2026
direct
4h 20m $342
3 days ago
* Prices are in USD per passenger, including taxes, for a round trip. Prices are based on searches carried out within the last 72 hours. Please note that availability and ticket prices are subject to change and should not be considered as the final price quoted.
Cheapest flight tickets
$173
Average price of a round trip
$263
Average flight ticket price recorded over the last 3 months for a round trip.
Flight duration
4h45
A flight from Chicago to San Francisco takes on average 4h45.
Best time
May
According to user searches, the ideal month to go to San Francisco is May.
Tips for finding a cheap flight from Chicago to San Francisco
Check out our tips for booking your flight to San Francisco (USA) from Chicago (USA) at the cheapest possible price.
Usually, the cheapest month to pick up a ticket on this route is September, with an average flight ticket price of $73 (calculation over the last two years). The most touristic season corresponds to the months of October, December and September.
For the cheapest flights, it is advisable to buy your ticket at least 22 days before the departure date.
The airline offering the cheapest flight tickets is Frontier Airlines. A ticket from the airline Frontier Airlines to San Francisco costs on average $261.
The airlines that offer the most flights are American Airlines, United Airlines and Southwest Airlines.
Price of flight tickets from Chicago to San Francisco
Here is some information and tips to know before booking your flight:
- Flight ticket prices range from $173 to $453
- The average price of a flight ticket is about $263
- Prices are lowest for stays in the month of September
- The month in which booking a ticket is cheaper is: October
info departure city :
Chicago, USA
airports :
Chicago-Merrill C. Meigs Field Airport (CGX)
Chicago FSS (CHI)
Chicago-Midway International Airport (MDW)
Chicago-O'Hare International Airport (ORD)
local time :
Chicago is a city in the country USA, the time zone is [[timezone]]. In Chicago, it is currently {fromLocalTime}, the temperature is on average 16°C, with a minimum of 15°C and a maximum of 18°C.
The city of Chicago (CHI) has 4 airport(s): Chicago-Merrill C. Meigs Field, Chicago FSS, Chicago-Midway and Chicago-O'Hare
destination info :
San Francisco, USA
airport :
San Francisco International Airport (SFO)
local time :
San Francisco is in the country USA, the time zone is [[timezone]]. In San Francisco, it is currently {toLocalTime}, the temperature is on average 18°C, with a minimum of 16°C and a maximum of 24°C.
The city of San Francisco has 1 airport(s): San Francisco
Useful info about San Francisco
What is the least touristic period to go to San Francisco?
If you want to visit San Francisco during the least touristic period, choose the month of May.
What is the most popular time to travel to San Francisco?
In San Francisco, the most popular month is October. It is during this period that the prices offered by airlines are also the highest.
When should I book my flight from Chicago to San Francisco?
According to our data, it is recommended to book your flight 22 days before your departure. If you book your flight ticket 4 weeks before your departure, you may find a price below average. You can also choose morning flights that are 100% cheaper than afternoon and evening flights. The cheapest day to book a flight from Chicago to San Francisco is Thursday.
What are the arrival and destination airports when traveling between Chicago and San Francisco?
When you leave, you can leave from Chicago-Midway or Chicago-O'Hare, and you will arrive at Oakland, San Francisco or San Jose-Norman Y. Mineta.
How to reach Chicago airport from the city centre?
The airport Chicago-Merrill C. Meigs Field is located 4 km, Chicago FSS is located 29 km, Chicago-Midway is located 12 km or Chicago-O'Hare is located 29 km from the city centre. You can access it by using public transportation, taking a taxi, or renting a car.
Are there other means of transportation to go from Chicago to San Francisco?
Airplane is the only means of transportation listed on Liligo for this journey.
Are there big differences in weather between Chicago and San Francisco?
In summer, the average temperature is 17°C in San Francisco and 22°C in Chicago. The average rainfall in summer is 2 mm in San Francisco and 145 mm in Chicago. In summer, it is warmer in Chicago and it rains less in San Francisco. In winter, it is colder in San Francisco and it rains more in San Francisco.
