$75+ 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 6/10. Fares are subject to change and may not be available on all flights or dates of travel.
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.Cheap flight deals from Illinois to San Francisco Bay Area
Keep the following information in mind while searching for Illinois to San Francisco Bay Area flight deals. Data was last updated April 4, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $192 (Travelocity) |
One-way from | $75 (FlightHub) |
Popular in | December |
Cheapest in | September |
Average price | $287 |
Find flight deals from Illinois to San Francisco Bay Area
Cheapest flights from Illinois to San Francisco Bay AreaExplore 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 April 4, 2025.
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 April 4, 2025.
This Travelocity deal was found by Cheapflights users on 4/3. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/3. 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.
This Cheapflightsfares deal was found by Cheapflights users on 4/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Southwest deal was found by Cheapflights users on 4/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Trip.com deal was found by Cheapflights users on 4/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Alaska Airlines deal was found by Cheapflights users on 4/4. 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.
This Southwest deal was found by Cheapflights users on 4/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 4/2. 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.
This Hawaiian Airlines deal was found by Cheapflights users on 4/4. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 4/4. 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.
This American Airlines deal was found by Cheapflights users on 4/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
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 2,558,603 searches. Data last updated April 4, 2025.
Use the filters below to find and compare flights from Illinois to San Francisco Bay Area that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
ChicagoOakland
ORD - OAK
ORDOAK
Chicago O'Hare Intl
Wed 4/30
5:56 pm-11:44 pm
1 stop7h 48m
Oakland
Tue 5/6
6:40 pm-10:55 am
1 stop14h 15m
ChicagoSan Jose
ORD - SJC
ORDSJC
Chicago O'Hare Intl
Tue 5/6
9:38 pm-11:29 pm
2 stops27h 51m
San Jose
Tue 5/13
4:28 pm-5:25 am
1 stop10h 57m
ChicagoOakland
ORD - OAK
ORDOAK
Chicago O'Hare Intl
Thu 5/1
8:00 am-5:35 pm
1 stop11h 35m
Oakland
Tue 5/6
6:40 pm-10:55 am
1 stop14h 15m
ChicagoSan Francisco
MDW - SFO
MDWSFO
Chicago Midway
Thu 5/15
11:05 am-5:05 pm
1 stop8h 00m
San Francisco
Sat 5/17
5:20 am-4:20 pm
2 stops9h 00m
ChicagoSan Francisco
ORD - SFO
ORDSFO
Chicago O'Hare Intl
Thu 5/15
5:00 pm-12:30 am
1 stop9h 30m
San Francisco
Sat 5/17
7:35 am-6:30 pm
2 stops8h 55m
ChicagoSan Francisco
ORD - SFO
ORDSFO
Chicago O'Hare Intl
Wed 5/7
6:58 pm-9:57 pm
Nonstop4h 59m
San Francisco
Mon 5/12
11:48 am-6:20 pm
Nonstop4h 32m
ChicagoSan Francisco
ORD - SFO
ORDSFO
Chicago O'Hare Intl
Thu 5/1
6:58 pm-9:57 pm
Nonstop4h 59m
San Francisco
Sat 5/10
12:43 pm-7:10 pm
Nonstop4h 27m
ChicagoOakland
MDW - OAK
MDWOAK
Chicago Midway
Wed 4/30
8:35 am-1:00 pm
1 stop6h 25m
Oakland
Tue 5/6
5:50 am-12:00 pm
Nonstop4h 10m
ChicagoSan Jose
ORD - SJC
ORDSJC
Chicago O'Hare Intl
Sun 5/4
8:14 pm-6:41 pm
1 stop24h 27m
San Jose
Tue 5/6
7:54 pm-10:55 am
1 stop13h 01m
ChicagoOakland
ORD - OAK
ORDOAK
Chicago O'Hare Intl
Tue 5/6
9:00 am-3:48 pm
1 stop8h 48m
Oakland
Tue 5/20
2:31 pm-11:59 pm
1 stop7h 28m
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.
Cheapflights Insights
Everything you need to know about your flight from Illinois to San Francisco Bay Area
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 $393). 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 April 4, 2025.
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 April 4, 2025.
The most flights from USIL to zzXIH are scheduled on a Friday (78 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (45 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 April 4, 2025.
To help decide which airline to fly from Illinois to San Francisco Bay Area, see what other customers have to say about Alaska Airlines, Southwest and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
Crew
Food
Entertainment
Comfort
Boarding
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Food
Entertainment
Comfort
Boarding
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Food
Entertainment
Comfort
Boarding
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Food
Entertainment
Comfort
Boarding
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Food
Entertainment
Comfort
Boarding
Reviews
Seleste,Dec 2024
FAT - SAN
Overall
Crew
Food
Entertainment
Comfort
Boarding
Reviews
Seleste,Dec 2024
FAT - SAN
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.
Browse thousands of different options on Cheapflights for your next trip
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Alternative routes for Illinois to San Francisco Bay Area
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from Illinois to San Francisco Bay Area
Discover the top 8 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 2,558,603 searches. Data last updated April 4, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$219 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$449 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$129 | Average$246 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$140 | Average$336 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$141 | Average$478 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$144 | Average$303 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$197 | Average$479 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$242 | Average$437 | FlexibilityNo cancel fee | On-time63% |