HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Francisco Bay Area

$42+ Cheap flights from Illinois 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SFO
Nov 10 — Nov 171
Sun 11/10
Sun 11/17
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Illinois to San Francisco Bay Area with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Illinois to San Francisco Bay Area

Cheapest flights from Illinois to San Francisco Bay Area
Explore the most affordable flight options available from Illinois to San Francisco Bay Area. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 5, 2024.

This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/39:10 pmORD - SJC
2 stops24h 39mSpirit Airlines
Tue 12/108:44 pmSJC - ORD
1 stop6h 46mSpirit Airlines
Deal found 11/3$150
This Booking.com deal was found by Cheapflights users on 11/4. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/186:05 amMDW - SJC
1 stop7h 02mFrontier
Thu 11/211:41 pmSJC - MDW
1 stop21h 29mFrontier
Deal found 11/4$158
This FlightHub deal was found by Cheapflights users on 11/4. 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.
Fri 12/69:53 pmORD - SJC
1 stop11h 53mMultiple Airlines
Sun 12/82:28 pmSJC - ORD
1 stop8h 11mMultiple Airlines
Deal found 11/4$160
This Frontier deal was found by Cheapflights users on 11/4. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/157:25 amORD - SJC
1 stop6h 43mFrontier
Tue 12/177:26 pmSJC - ORD
1 stop8h 16mFrontier
Deal found 11/4$168
This CheapOair deal was found by Cheapflights users on 11/4. 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.
Sun 12/2212:00 pmSTL - SJC
1 stop27h 49mFrontier
Sun 1/512:31 pmSJC - STL
1 stop17h 42mFrontier
Deal found 11/4$178
This Mytrip deal was found by Cheapflights users on 11/3. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/228:34 pmORD - SFO
1 stop13h 13mFrontier
Mon 12/302:50 pmSFO - ORD
1 stop6h 56mFrontier
Deal found 11/3$190
This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/77:15 amMDW - SFO
1 stop16h 50mFrontier
Mon 12/911:59 pmSFO - MDW
1 stop9h 43mFrontier
Deal found 11/4$191
This CheapOair deal was found by Cheapflights users on 11/3. 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.
Wed 12/119:10 pmORD - OAK
1 stop14h 15mSpirit Airlines
Wed 12/184:52 pmOAK - ORD
2 stops10h 38mSpirit Airlines
Deal found 11/3$192
This eDestinos deal was found by Cheapflights users on 11/4. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/49:10 pmORD - SFO
1 stop19h 40mMultiple Airlines
Wed 12/1110:53 amSFO - ORD
1 stop16h 37mMultiple Airlines
Deal found 11/4$193
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/146:50 amORD - SFO
Nonstop4h 48mUnited Airlines
Tue 12/3111:35 pmSFO - ORD
Nonstop4h 19mUnited Airlines
Deal found 11/4$203
This Alaska Airlines deal was found by Cheapflights users on 11/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/175:59 pmORD - SFO
Nonstop4h 59mAlaska Airlines
Tue 12/248:35 pmSFO - ORD
1 stop6h 55mAlaska Airlines
Deal found 11/4$212
This United Airlines deal was found by Cheapflights users on 11/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/97:00 amSTL - SFO
Nonstop4h 36mUnited Airlines
Mon 12/1612:00 pmSFO - STL
Nonstop3h 56mUnited Airlines
Deal found 11/4$227

Find flights from Illinois to San Francisco Bay Area within your budget

Customize your flight search to find flights from Illinois 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 2,554,862 searches. Data last updated November 5, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisSan Jose

STL - SJC

STLSJC

Lambert-St Louis

Wed 2/5

6:46 pm-12:11 pm

1 stop19h 25m

$65

ChicagoOakland

ORD - OAK

ORDOAK

Chicago O'Hare Intl

Wed 12/4

9:10 pm-2:40 pm

2 stops19h 30m

$66

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 11/25

8:35 am-11:18 am

Nonstop4h 43m

$95

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Sat 1/18

9:05 am-12:00 pm

Nonstop4h 55m

$109

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 12/10

5:59 pm-8:58 pm

Nonstop4h 59m

$109

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 2/4

12:55 pm-5:44 pm

1 stop6h 49m

$118

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Wed 12/4

6:35 pm-11:59 pm

1 stop7h 24m

$128

St. LouisOakland

STL - OAK

STLOAK

Lambert-St Louis

Mon 11/25

12:00 pm-9:04 am

3 stops23h 04m

$162

ChicagoSan Jose

MDW - SJC

MDWSJC

Chicago Midway

Sun 1/5

8:41 pm-1:49 pm

1 stop19h 08m

$86

ChicagoSan Jose

ORD - SJC

ORDSJC

Chicago O'Hare Intl

Tue 12/3

3:26 pm-7:46 am

1 stop18h 20m

$88

Flights are sorted by cheapest first

Deals found on 11/4

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Illinois to San Francisco Bay Area

Have a flexible travel schedule? Discover the best time to fly to San Francisco Bay Area from Illinois 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.

Travel insights for flights from Illinois to San Francisco Bay Area

Get recent, data-driven insights about flights from Illinois to San Francisco Bay Area including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Illinois to San Francisco Bay Area (average of $276). Flying from Illinois to San Francisco Bay Area in June is currently the most expensive (average of $381). 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 IL to XIH?

Find hourly flight availability from Illinois 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 November 5, 2024.

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

Weekly flight availability from Illinois to San Francisco Bay Area

Explore weekly flight availability from Illinois 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 November 5, 2024.

The most flights from USIL to zzXIH are scheduled on a Tuesday (54 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (28 on average).

Rainfall in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco Bay Area ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco Bay Area when rainfall is around 0.0 in.

Temperature in San Francisco Bay Area by month

Plan your trip to San Francisco Bay Area by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco Bay Area, 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).

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 November 5, 2024.
To help decide which airline to fly from Illinois to San Francisco Bay Area, see what other customers have to say about United Airlines, Alaska Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
5,082 reviews

Comfort

8.1

Overall

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Boarding

8.3

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Southwest
8.1
Very good
5,082 reviews
Southwest
8.1
Very good
5,082 reviews

Comfort

8.1

Overall

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Boarding

8.3

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Alaska Airlines
8.0
Very good
9,421 reviews
Southwest
8.1
Very good
5,082 reviews

Comfort

8.1

Overall

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Boarding

8.3

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Delta
8.0
Very good
8,830 reviews
Southwest
8.1
Very good
5,082 reviews

Comfort

8.1

Overall

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Boarding

8.3

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

United Airlines
7.4
Good
9,215 reviews
Southwest
8.1
Very good
5,082 reviews

Comfort

8.1

Overall

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Boarding

8.3

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

WestJet
7.3
Good
2,800 reviews
Southwest
8.1
Very good
5,082 reviews

Comfort

8.1

Overall

8.1

Food

7.2

Crew

8.7

Entertainment

7.7

Boarding

8.3

Reviews

1 / 10

My first time, surprisingly good! It was a good ride overall. Coming from Singapore, this budget flight is better than the budget airline for our national carrier Singapore Airlines.

Related info for your journey

Find useful and relevant information for your journey from Illinois 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.

  • Can I find flights from Illinois to San Francisco Bay Area for under $200 on Cheapflights?

    Yes, there are multiple flights from Illinois to San Francisco Bay Area for under $200. The cheapest flight booked recently is on Frontier for just $110, but on average you can expect to pay $184.

  • Are there nonstop flights from Illinois to San Francisco Bay Area for under $200 on Cheapflights?

    Cheapflights has at least 8 direct flights from Illinois to San Francisco Bay Area under $200. A good price for a nonstop flight from Illinois to San Francisco Bay Area is less than $278.

  • Are there last-minute flights available from Illinois to San Francisco Bay Area for under $200?

    There are currently 20+ open flights from Illinois to San Francisco Bay Area within the next 7 days for less than $200.

  • What days are nonstop flights available from Illinois to San Francisco Bay Area?

    You can find nonstop flights on the following days: Sunday, Tuesday, Wednesday, Thursday, Friday, Saturday.

  • How many flights depart from Illinois to San Francisco Bay Area on average per day?

    25 flight departures from Illinois to San Francisco Bay Area per day on average.
    Early Morning (Midnight to 6am) - 4% of flight departures
    Morning (6am - Noon) - 64% of flight departures
    Afternoon (Noon - 6pm) - 24% of flight departures
    Evening (6pm - Midnight) - 8% of flight departures

  • How long is the flight from Illinois to San Francisco Bay Area?

    For as low as $110, Frontier can have you in San Francisco Bay Area from Illinois in 4h 44m. There are 1851 mi between Illinois and San Francisco Bay Area. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Spirit Airlines, with whom users have recently found tickets for as low as $42. However, be on the lookout for offers from Frontier and American Airlines, as they are both options that can get you from Illinois to San Francisco Bay Area for a low price.

  • What does ORD to SFO mean?

    Great question - ORD to SFO just means Chicago O'Hare Intl Airport to San Francisco Airport. Now you’ll know what these unique codes when you look for flights! Ready for more IATA code knowledge? These are related airports for your current travel destination: San Jose Airport (SJC), Oakland Airport (OAK), Santa Rosa Sonoma County Airport (STS), Concord Buchanan Fld Airport (CCR), Napa County Airport (APC).

  • Can I find deals for flights from Illinois to San Francisco Bay Area that include extra baggage allowance?

    The amount of baggage you can bring on your Illinois to San Francisco Bay Area flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Illinois to San Francisco Bay Area with specific airlines?

    Yes, Cheapflights allows you to browse and filter Illinois to San Francisco Bay Area flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

  • How can I find direct flights from Illinois 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 Illinois to San Francisco Bay Area.

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

    Yes. Cheapflights offers flight deals from Illinois 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.

  • Can I find deals for flights from Illinois to San Francisco Bay Area that allow pets onboard?

    Many airlines flying from Illinois to San Francisco Bay Area offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Illinois to San Francisco Bay Area?

    Yes, you can often find last-minute deals on Illinois to San Francisco Bay Area flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Illinois to San Francisco Bay Area flight deals updated?

    The Illinois to San Francisco Bay Area flight deals you see on this page were last updated on 11/4.

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to San Francisco Bay Area (average of $276). Flying from Illinois to San Francisco Bay Area in June is currently the most expensive (average of $381). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Illinois to San Francisco Bay Area

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Los Angeles flights
John F Kennedy Intl to Las Vegas flights
Newark to Los Angeles flights
John F Kennedy Intl to San Francisco flights
Newark to Las Vegas flights
Dallas/Fort Worth to Los Angeles flights
O'Hare Intl to Los Angeles flights
LaGuardia to Los Angeles flights
O'Hare Intl to Las Vegas flights
Dallas/Fort Worth to Las Vegas flights
Seattle to Los Angeles flights
Newark to San Francisco flights
Los Angeles to Las Vegas flights
San Francisco to Las Vegas flights
Seattle to Ontario flights
Seattle to Las Vegas flights
Atlanta to Las Vegas flights
San Francisco to Los Angeles flights
Reagan-National to Los Angeles flights
Boston to Los Angeles flights
Seattle to San Francisco flights
Los Angeles to San Francisco flights
LaGuardia to Las Vegas flights
Santa Ana to Las Vegas flights
Dulles Intl to Las Vegas flights
Hobby to Las Vegas flights
Boston to Las Vegas flights
Minneapolis to Las Vegas flights
Oakland to Burbank flights
Burbank to Oakland flights
Dulles Intl to Los Angeles flights
Newark to Santa Ana flights
Oakland to Los Angeles flights
Burbank to Las Vegas flights
John F Kennedy Intl to San Diego flights
LaGuardia to San Francisco flights
Los Angeles to San Jose flights
Midway to Las Vegas flights
Denver to Las Vegas flights
Detroit to Las Vegas flights
Baltimore to Las Vegas flights
Baltimore to Los Angeles flights
San Francisco to Ontario flights
Seattle to San Diego flights
San Jose to Los Angeles flights
Seattle to Santa Ana flights
San Francisco to Santa Ana flights
George Bush Intcntl to Las Vegas flights
Oakland to Las Vegas flights
Philadelphia to Las Vegas flights

Top 7 airlines flying from Illinois to San Francisco Bay Area

Discover the top 7 airlines that operate flights from Illinois 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 2,554,862 searches. Data last updated November 5, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$78Average$209FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$109Average$407FlexibilityNo cancel feeOn-time75%
Spirit AirlinesCheapest$129Average$250FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$169Average$488FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$503FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$207Average$349FlexibilityNo cancel feeOn-time63%
DeltaCheapest$234Average$387FlexibilityNo cancel feeOn-timeN/A
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines