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$51+ Cheap flights from Chicago (CHI) to San Francisco Bay Area

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/13. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — SFO
août 19 — août 261
mar. 8/19
mar. 8/26
1 adult, Economy
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Cheap flight deals from Chicago to San Francisco Bay Area

Keep the following information in mind while searching for Chicago to San Francisco Bay Area flight deals. Data was last updated août 14, 2025.

Round-trip from

$103
(Cheapflightsfares)

One-way from

$51
(Cheapflightsfares)

Popular in

December

Cheapest in

September

Average price

$317
From Chicago (CHI) to San Francisco Bay Area
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One-way flight from Chicago (CHI) to San Francisco Bay Area
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Highest demand for flights based on searches. 7% potential increase in price ($26 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Chicago to San Francisco Bay Area

Cheapest flights from Chicago to San Francisco Bay Area
Explore the most affordable flight options available from Chicago to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on août 14, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 9/1011:15 amORD - OAK
1 stop14h 17mSpirit Airlines
mer. 9/176:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/11$103
This Expedia deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/911:15 amORD - SJC
1 stop10h 45mSpirit Airlines
mer. 9/176:35 amSJC - ORD
1 stop12h 57mSpirit Airlines
Deal found 8/12$114
This FlightHub deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 9/69:00 amORD - SJC
1 stop13h 00mSpirit Airlines
mar. 9/96:35 amSJC - ORD
1 stop10h 16mSpirit Airlines
Deal found 8/13$115
This CheapOair deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 9/109:00 amORD - OAK
1 stop6h 34mSpirit Airlines
sam. 9/136:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/11$141
This Cheapflightsfares deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/1611:15 amORD - OAK
1 stop14h 17mSpirit Airlines
mar. 9/236:30 amOAK - ORD
1 stop10h 21mSpirit Airlines
Deal found 8/14$151
This Cheapflightsfares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/156:05 pmORD - OAK
1 stop7h 27mSpirit Airlines
mer. 9/176:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/12$158
This FlightHub deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/99:00 amORD - SJC
1 stop13h 00mSpirit Airlines
jeu. 10/26:35 amSJC - ORD
1 stop12h 57mSpirit Airlines
Deal found 8/12$163
This Cheapflightsfares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 9/56:05 pmORD - OAK
1 stop7h 27mSpirit Airlines
mar. 9/96:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/12$166
This CheapOair deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sam. 9/612:46 pmORD - OAK
1 stop12h 46mSpirit Airlines
mar. 9/96:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/14$168
This Cheapflightsfares deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/911:15 amORD - OAK
1 stop14h 17mSpirit Airlines
sam. 9/206:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/13$173
This Cheapflightsfares deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/911:15 amORD - OAK
1 stop14h 17mSpirit Airlines
sam. 9/136:30 amOAK - ORD
1 stop13h 02mSpirit Airlines
Deal found 8/12$179
This FlightHub deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/86:00 amORD - SJC
1 stop7h 30mFrontier
lun. 10/1312:35 pmSJC - ORD
1 stop10h 24mFrontier
Deal found 8/14$181

Cheapflights Fare Finder

 
Customize your flight search to find flights from Chicago to San Francisco Bay Area that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated août 14, 2025.
Use the filters below to find and compare flights from Chicago to San Francisco Bay Area that are best for you.

Fly from

Chicago

Fly to

San Francisco Bay Area

Route

Depart

Return

Price

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

mar. 9/16

11:15 am-11:32 pm

1 stop14h 17m

Oakland

mer. 9/17

6:30 am-9:32 pm

1 stop13h 02m

$103

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

mer. 9/10

11:15 am-11:32 pm

1 stop14h 17m

Oakland

mer. 9/17

6:30 am-9:32 pm

1 stop13h 02m

$103

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

mer. 9/10

9:00 am-1:34 pm

1 stop6h 34m

Oakland

sam. 9/13

6:30 am-9:32 pm

1 stop13h 02m

$141

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

mar. 9/16

11:15 am-11:32 pm

1 stop14h 17m

Oakland

mar. 9/23

6:30 am-6:51 pm

1 stop10h 21m

$151

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

sam. 9/20

12:46 pm-11:32 pm

1 stop12h 46m

Oakland

lun. 9/22

6:30 am-9:32 pm

1 stop13h 02m

$158

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

lun. 9/15

6:05 pm-11:32 pm

1 stop7h 27m

Oakland

mer. 9/17

6:30 am-9:32 pm

1 stop13h 02m

$158

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

lun. 9/8

6:00 am-11:30 am

1 stop7h 30m

San Jose

lun. 10/13

12:35 pm-12:59 am

1 stop10h 24m

$181

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

ven. 11/7

6:00 am-11:32 am

1 stop7h 32m

San Jose

mar. 11/11

4:51 pm-6:25 am

1 stop11h 34m

$194

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

jeu. 10/2

5:35 am-1:14 pm

1 stop9h 39m

San Jose

dim. 10/5

12:26 pm-11:59 pm

1 stop9h 33m

$194

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

ven. 10/31

9:15 am-11:50 am

Nonstop4h 35m

San Francisco

mar. 11/4

5:50 am-3:55 pm

1 stop8h 05m

$198

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 60 results
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Best time to book a flight from Chicago to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Chicago with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Chicago to San Francisco Bay Area

What is the cheapest month to book a flight from Chicago to San Francisco Bay Area?

Currently, January is the cheapest month in which you can book a flight from Chicago to San Francisco Bay Area (average of $276). Flying from Chicago to San Francisco Bay Area in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from CHI to XIH?

Find hourly flight availability from Chicago to San Francisco Bay Area. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated août 14, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Chicago to San Francisco Bay Area as you normally would.

Weekly flight availability from Chicago to San Francisco Bay Area

Explore weekly flight availability from Chicago to San Francisco Bay Area. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated août 14, 2025.

The most flights from CHI to zzXIH are scheduled on a Thursday (98 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (31 on average).

Reviews of airlines servicing San Francisco Bay Area

Get insights into the airlines that provide service to San Francisco Bay Area. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco Bay Area. Reviews last updated août 14, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest, and United Airlines from Chicago to San Francisco Bay Area. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Southwest
8.0
Very good
4,244 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)
Frontier
5.8
Fair
3,219 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

BOI - LAX

flying in first class, my husband froze the entire flight and was miserable. first class does not offer blankets or any entertainment. (TV etc)

Related info for your journey

Find useful and relevant information for your journey from Chicago to San Francisco Bay Area. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Chicago to San Francisco Bay Area one-way?

    The cheapest airlines for a one-way flight from Chicago to San Francisco Bay Area are Spirit Airlines ($51), Southwest ($90), and Frontier ($93).

  • What are the most popular routes from Chicago to San Francisco Bay Area?

    When deciding which route to take from Chicago to San Francisco Bay Area consider Chicago O'Hare Intl - San Francisco, Chicago Midway - San Francisco or Chicago O'Hare Intl - Oakland as they are the most popular.

  • What are the most reliable airlines from Chicago to San Francisco Bay Area?

    Consider ANA (82%), Air China (79%) or Austrian Airlines (78%) when booking your flight. These represent the most reliable airlines when flying from Chicago to San Francisco Bay Area.

  • What are the cheapest flights from Chicago to San Francisco Bay Area?

    Looking for the cheapest flight from Chicago to San Francisco Bay Area? While on average our users pay $779, our data indicates the cheapest price to be $98. The most popular route (Chicago O'Hare Intl - San Francisco), is priced around $179.

  • Can I find deals for flights from Chicago to San Francisco Bay Area that include hotel bookings?

    Yes. In addition to deals on Chicago to San Francisco Bay Area flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Chicago to San Francisco Bay Area?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Chicago to San Francisco Bay Area.

  • Can I find deals for business class flights from Chicago to San Francisco Bay Area?

    Yes. Cheapflights offers flight deals from Chicago to San Francisco Bay Area by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Chicago to San Francisco Bay Area?

    Currently, January is the cheapest month in which you can book a flight from Chicago to San Francisco Bay Area (average of $276). Flying from Chicago to San Francisco Bay Area in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Chicago to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Chicago to San Francisco Bay Area

Discover the top 8 airlines that operate flights from Chicago to San Francisco Bay Area. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated août 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$90Average$254FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$108Average$217FlexibilityNo cancel feeOn-time85%
Spirit AirlinesCheapest$119Average$229FlexibilityNo cancel feeOn-time65%
DeltaCheapest$128Average$349FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$141Average$405FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$180Average$408FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$187Average$286FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$197Average$482FlexibilityNo cancel feeOn-time71%

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