$75+ Cheap flights from San Francisco Bay Area to Illinois
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 5/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
Apr 9 — Apr 161
1 adult, Economy
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Find cheap flights from San Francisco Bay Area to Illinois 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 San Francisco Bay Area to Illinois
Keep the following information in mind while searching for San Francisco Bay Area to Illinois flight deals. Data was last updated April 4, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $206 (iWofly) |
One-way from | $75 (Cheapflightsfares) |
Popular in | December |
Cheapest in | February |
Average price | $300 |
Find flight deals from San Francisco Bay Area to Illinois
Cheapest flights from San Francisco Bay Area to IllinoisExplore the most affordable flight options available from San Francisco Bay Area to Illinois. 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 San Francisco Bay Area to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 4, 2025.
This iWofly 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/287:00 amSFO - ORD
1 stop9h 01mAlaska Airlines
Sat 5/107:13 pmORD - SFO
Nonstop4h 59mAlaska Airlines
Deal found 4/3![Alaska Airlines logo]()
$206
This Southwest 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/197:20 amSFO - MDW
1 stop7h 30mSouthwest
Tue 4/295:50 amMDW - SFO
1 stop6h 15mSouthwest
Deal found 4/4![Southwest logo]()
$207
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.
Wed 4/306:00 amSFO - ORD
1 stop8h 45mSouthwest
Tue 5/66:55 pmORD - SFO
1 stop6h 25mSouthwest
Deal found 4/3![Southwest logo]()
$216
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.
Sat 5/242:50 pmSFO - ORD
Nonstop4h 33mAmerican Airlines
Thu 5/299:00 pmORD - SFO
Nonstop4h 49mAmerican Airlines
Deal found 4/3![American Airlines logo]()
$218
This Kissandfly.com 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 Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/2412:33 pmSFO - ORD
Nonstop4h 26mHawaiian Airlines
Fri 5/3011:05 amORD - SFO
1 stop9h 51mHawaiian Airlines
Deal found 4/3![Hawaiian Airlines logo]()
$220
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/1411:48 amSFO - ORD
Nonstop4h 32mMultiple Airlines
Fri 5/165:21 pmORD - SFO
1 stop8h 48mMultiple Airlines
Deal found 4/3![Multiple Airlines logo]()
$224
This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:40 pmOAK - ORD
1 stop9h 53mMultiple Airlines
Wed 4/306:00 amORD - OAK
1 stop8h 01mMultiple Airlines
Deal found 4/4![Multiple Airlines logo]()
$228
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/246:40 pmOAK - ORD
1 stop9h 53mSpirit Airlines
Mon 4/283:08 pmORD - OAK
1 stop28h 27mSpirit Airlines
Deal found 4/4![Spirit Airlines logo]()
$229
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/911:03 amSFO - ORD
1 stop6h 39mFrontier
Mon 5/125:21 pmORD - SFO
1 stop8h 48mFrontier
Deal found 4/3![Frontier logo]()
$232
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/79:59 pmSFO - MDW
1 stop12h 25mFrontier
Thu 5/82:45 pmMDW - SFO
1 stop10h 21mFrontier
Deal found 4/4![Frontier logo]()
$235
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.
Sun 5/46:00 amOAK - ORD
1 stop10h 01mAlaska Airlines
Fri 5/95:56 pmORD - OAK
1 stop7h 48mAlaska Airlines
Deal found 4/4![Alaska Airlines logo]()
$236
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.
Tue 6/35:50 amOAK - MDW
Nonstop4h 10mSouthwest
Thu 6/127:00 pmMDW - OAK
1 stop6h 25mSouthwest
Deal found 4/3![Southwest logo]()
$237
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco Bay Area to Illinois 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 San Francisco Bay Area to Illinois that are best for you.
Fly from
San Francisco Bay Area
Fly to
Illinois
Route
Depart
Return
Price
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Mon 4/28
7:00 am-6:01 pm
1 stop9h 01m
Chicago O'Hare Intl
Sat 5/10
7:13 pm-10:12 pm
Nonstop4h 59m
$206
San FranciscoChicago
SFO - MDW
SFOMDW
San Francisco
Sat 4/19
7:20 am-4:50 pm
1 stop7h 30m
Chicago Midway
Tue 4/29
5:50 am-10:05 am
1 stop6h 15m
$207
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Wed 4/30
6:00 am-4:45 pm
1 stop8h 45m
Chicago O'Hare Intl
Tue 5/6
6:55 pm-11:20 pm
1 stop6h 25m
$216
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sat 5/24
2:50 pm-9:23 pm
Nonstop4h 33m
Chicago O'Hare Intl
Thu 5/29
9:00 pm-11:49 pm
Nonstop4h 49m
$218
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sat 5/24
12:33 pm-6:59 pm
Nonstop4h 26m
Chicago O'Hare Intl
Fri 5/30
11:05 am-6:56 pm
1 stop9h 51m
$220
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Wed 5/14
11:48 am-6:20 pm
Nonstop4h 32m
Chicago O'Hare Intl
Fri 5/16
5:21 pm-12:09 am
1 stop8h 48m
$224
OaklandChicago
OAK - ORD
OAKORD
Oakland
Thu 4/24
6:40 pm-6:33 am
1 stop9h 53m
Chicago O'Hare Intl
Wed 4/30
6:00 am-12:01 pm
1 stop8h 01m
$228
OaklandChicago
OAK - ORD
OAKORD
Oakland
Thu 4/24
6:40 pm-6:33 am
1 stop9h 53m
Chicago O'Hare Intl
Mon 4/28
3:08 pm-5:35 pm
1 stop28h 27m
$229
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Fri 5/9
11:03 am-7:42 pm
1 stop6h 39m
Chicago O'Hare Intl
Mon 5/12
5:21 pm-12:09 am
1 stop8h 48m
$232
San FranciscoChicago
SFO - MDW
SFOMDW
San Francisco
Wed 5/7
9:59 pm-12:24 pm
1 stop12h 25m
Chicago Midway
Thu 5/8
2:45 pm-11:06 pm
1 stop10h 21m
$235
Showing 1-10 of 60 results
Best time to book a flight from San Francisco Bay Area to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from San Francisco Bay Area 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 San Francisco Bay Area to Illinois
What is the cheapest month to book a flight from San Francisco Bay Area to Illinois?
Currently, August is the cheapest month in which you can book a flight from San Francisco Bay Area to Illinois (average of $245). Flying from San Francisco Bay Area to Illinois in March is currently the most expensive (average of $321). 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 XIH to IL?
Find hourly flight availability from San Francisco Bay Area to Illinois. 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.
When flying from San Francisco Bay Area to Illinois, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Weekly flight availability from San Francisco Bay Area to Illinois
Explore weekly flight availability from San Francisco Bay Area to Illinois. 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 zzXIH to USIL are scheduled on a Thursday (80 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (29 on average).
Rainfall in Illinois by month
Plan your trip to Illinois by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.
Temperature in Illinois by month
Plan your trip to Illinois by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).
Reviews of airlines servicing Illinois
Get insights into the airlines that provide service to Illinois. 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 Illinois. Reviews last updated April 4, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from San Francisco Bay Area to Illinois. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Entertainment
7.1
Overall
8.0
Boarding
8.2
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Entertainment
7.1
Overall
8.0
Boarding
8.2
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Entertainment
7.1
Overall
8.0
Boarding
8.2
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Entertainment
7.1
Overall
8.0
Boarding
8.2
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Entertainment
7.1
Overall
8.0
Boarding
8.2
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Comfort
7.9
Entertainment
7.1
Overall
8.0
Boarding
8.2
Crew
8.5
Food
7.1
Reviews
1 / 20
10.0
ExcellentCheri,Jan 2025
FAT - SEA
Related info for your journey
Find useful and relevant information for your journey from San Francisco Bay Area to Illinois. 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 San Francisco Bay Area to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Top 8 airlines flying from San Francisco Bay Area to Illinois
Discover the top 8 airlines that operate flights from San Francisco Bay Area to Illinois. 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$65 | Average$237 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$113 | Average$260 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$115 | Average$387 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$178 | Average$318 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$185 | Average$436 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$206 | Average$482 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$208 | Average$451 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$235 | Average$393 | FlexibilityNo cancel fee | On-timeN/A |