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Find cheap one-way flights from Chicago to San Francisco starting at US$40.

Book one-way or return flights from Chicago to San Francisco from as little as US$40. Choose from the popular airlines below and book your flight today!

  • One way
  • Round-trip

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

When is the cheapest time to book flights from Chicago to San Francisco?

We monitor flight fares to help you find the best deals effortlessly

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.
Cheapest airlines flights from Chicago to San Francisco

Compare prices, find the option that best suits your travel needs, and enjoy a comfortable journey with a trusted airline.

Frontier Airlines
From US$40
Alaska Airlines
From US$77
American Airlines
From US$83
Southwest Airlines
From US$99
United Airlines
From US$106
Sun Country Airlines
From US$112
Spirit Airlines
From US$128
Allegiant Air
From US$232
Jetblue Airways
From US$301
Delta Air Lines
From US$417
ANA airlines

Find more flights and airlines

Find cheap flights from Chicago to San Francisco by different airports

Searching for potential routes that might be cheaper and faster? Check out these alternative flights from Chicago to San Francisco.

  • Cheapest
    Frontier Airlines
    MDW
    12:29
    4h 39m
    Direct
    SFO
    15:08
    Midway International Airport - San Francisco International Airport
    Sat, Apr 27Frontier Airlines
    US$40
  • Frontier Airlines
    ORD
    10:10
    7h 33m
    Direct
    SFO
    15:43
    O'Hare International Airport - San Francisco International Airport
    Mon, Apr 1Frontier Airlines
    US$84
  • Allegiant Air
    RFD
    21:59
    19h 49m
    1 transfer
    SFO
    15:48
    Chicago Rockford International Airport - San Francisco International Airport
    Fri, Mar 29Allegiant Air
    US$232
  • Allegiant Air
    RFD
    21:59
    19h 49m
    1 transfer
    SFO
    15:48
    Chicago Rockford International Airport - San Francisco International Airport
    Fri, Mar 29Allegiant Air
    US$232
    Find More Flights

Frequently Asked Questions

  • When are flight tickets from Chicago (CHI) to San Francisco (SFO) the cheapest?

    Airlines adjust prices for flights from Chicago to San Francisco based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.
  • How much do flights from Chicago (CHI) to San Francisco (SFO) cost?

    According to Trip.com's data, the lowest price is around $306.
  • How long does it take to fly from Chicago (CHI) to San Francisco (SFO) and what is the distance?

    It takes around 4 hours 42 minutes to fly from Chicago (CHI) to San Francisco (SFO).
  • What is the transportation method from the main airport to downtown in San Francisco?

    • The distance from San Francisco International Airport to downtown is about 17km. It takes about 30 minutes by taxi.
  • What are the most popular airlines that fly from Chicago (CHI) to San Francisco (SFO)?

Chicago to San Francisco Flight Information

Cheapest nonstop flight price

$39

Cheapest round-trip ticket price

$88

Off-season for travel

November

Peak season for travel

June