Cheap flights from San Francisco (SFO) to Illinois from $41
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 5/18. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
SFO — ORD
May 17 — May 241
From?
To?
1 adult, Economy
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How far in advance should I book a flight from San Francisco to Illinois?
Find a great deal and save up to 39% by booking at least 47 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from San Francisco to Illinois within the next two weeks, with the cheapest ticket starting at $323.
What is the cheapest month to fly from San Francisco to Illinois?
October can be a great time to fly to Illinois from San Francisco with a flight ticket averaging about $320. Cheapflights users have found deals in the month of October for as cheap as $88. The most expensive prices can be found in the month of June.
When is the cheapest time to fly from San Francisco to Illinois (SFO - IL)?
When flying from San Francisco 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.
Cheap United Airlines flights from San Francisco to Illinois
Explore cheap flight options specifically provided by United Airlines for the route between San Francisco and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,659,571 searches. Data last updated May 12, 2024.
Find some of the cheapest United Airlines flights traveling from San Francisco to Illinois. Deals update often to give you more flight options matching your criteria
Wed 6/1211:34 pmSFO - ORD
Nonstop4h 13mUnited Airlines
Sat 6/159:17 pmORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 5/10$209
Wed 5/291:10 amSFO - ORD
Nonstop4h 20mUnited Airlines
Fri 5/316:05 amORD - SFO
Nonstop4h 42mUnited Airlines
Deal found 5/11$223
Thu 5/305:18 amSFO - ORD
Nonstop4h 20mUnited Airlines
Thu 5/309:19 pmORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 5/11$241
Fri 8/912:12 amSFO - ORD
Nonstop4h 18mUnited Airlines
Wed 8/1412:55 pmORD - SFO
1 stop6h 46mUnited Airlines
Deal found 5/10$248
Mon 7/812:12 amSFO - ORD
Nonstop4h 18mUnited Airlines
Sun 7/145:16 amORD - SFO
1 stop6h 23mUnited Airlines
Deal found 5/11$250
Fri 5/1712:09 amSFO - ORD
Nonstop4h 21mUnited Airlines
Sat 5/254:15 pmORD - SFO
1 stop6h 25mUnited Airlines
Deal found 5/11$260
Sat 5/186:35 pmSFO - ORD
Nonstop4h 21mUnited Airlines
Wed 5/229:45 pmORD - SFO
Nonstop4h 53mUnited Airlines
Deal found 5/10$287
Fri 5/1712:09 amSFO - ORD
Nonstop4h 21mUnited Airlines
Wed 5/229:45 pmORD - SFO
Nonstop4h 53mUnited Airlines
Deal found 5/10$308
Mon 5/2012:09 amSFO - ORD
Nonstop4h 21mUnited Airlines
Wed 5/229:45 pmORD - SFO
Nonstop4h 53mUnited Airlines
Deal found 5/11$311
Cheap Alaska Airlines flights from San Francisco to Illinois
Explore cheap flight options specifically provided by Alaska Airlines for the route between San Francisco and Illinois. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 2,659,571 searches. Data last updated May 12, 2024.
Browse through some of the cheapest Alaska Airlines flights traveling from San Francisco to Illinois. If these deals don't fit your criteria, make sure to check back soon as new deals are always added.
Wed 8/711:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 8/136:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/11$179
Tue 7/3011:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 8/136:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/10$184
Tue 8/67:55 pmSFO - ORD
1 stop7h 20mAlaska Airlines
Tue 8/136:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/11$188
Tue 7/911:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Sat 7/136:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/9$189
Mon 7/111:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Thu 7/46:20 pmORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 5/10$193
Wed 8/711:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Thu 8/156:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/10$194
Wed 5/2911:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
Fri 5/317:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/10$202
Wed 5/294:55 pmSFO - ORD
1 stop9h 45mAlaska Airlines
Fri 5/317:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/10$211
Tue 5/217:55 pmSFO - ORD
1 stop6h 45mAlaska Airlines
Wed 5/297:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/10$305
Cheap San Francisco to Illinois flights in May & June 2024
Find cheap flight options from San Francisco to Illinois specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,659,571 searches. Prices were last updated on May 12, 2024.
These are some of the most attractive deals on flights from San Francisco to Illinois in 2024. Check back in a little while for more flight options.
Wed 6/59:09 amSFO - MDW
Nonstop4h 11mFrontier
Fri 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$104
Sat 6/19:11 amSFO - MDW
Nonstop4h 12mFrontier
Fri 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$109
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Fri 5/314:18 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/11$117
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Wed 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$128
Fri 5/319:11 amSFO - MDW
Nonstop4h 12mFrontier
Fri 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$133
Fri 5/319:11 amSFO - MDW
Nonstop4h 12mFrontier
Fri 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/10$135
Sat 6/19:11 amSFO - MDW
Nonstop4h 12mFrontier
Wed 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/10$149
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Thu 5/302:41 pmMDW - SFO
1 stop10h 19mFrontier
Deal found 5/11$158
Sat 5/189:11 amSFO - MDW
Nonstop4h 12mFrontier
Mon 5/209:10 pmMDW - SFO
1 stop26h 52mFrontier
Deal found 5/11$159
San Francisco to Illinois 2024 flight deals
Discover exclusive flight deals for travel between San Francisco and Illinois in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,659,571 searches. Data last updated May 12, 2024.
These are some of the most attractive deals on flights from San Francisco to Illinois in 2024. Check back in a little while for more flight options.
Sat 9/219:03 amSFO - MDW
Nonstop4h 11mFrontier
Wed 9/254:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/11$88
Wed 9/49:03 amSFO - MDW
Nonstop4h 11mFrontier
Wed 9/114:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/11$98
Wed 6/59:09 amSFO - MDW
Nonstop4h 11mFrontier
Fri 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$104
Sat 9/79:03 amSFO - MDW
Nonstop4h 11mFrontier
Sat 9/144:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/11$106
Wed 9/189:03 amSFO - MDW
Nonstop4h 11mFrontier
Mon 9/234:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/11$108
Sat 6/19:11 amSFO - MDW
Nonstop4h 12mFrontier
Fri 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$109
Wed 9/119:03 amSFO - MDW
Nonstop4h 11mFrontier
Mon 9/164:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/11$115
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Fri 5/314:18 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/11$117
Sat 10/59:03 amSFO - MDW
Nonstop4h 11mFrontier
Sat 10/124:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/11$127
Non-stop flights to Illinois from San Francisco
Discover non-stop flight options from San Francisco to Illinois. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 2,659,571 searches. Data last updated May 12, 2024.
For a quicker trip, book one of these direct flights from San Francisco to Illinois. Users seeking other options on flights from San Francisco to Illinois should update the search form at the top of the page.
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Sat 6/14:28 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/11$171
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Mon 6/34:41 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/11$172
Mon 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
Wed 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$179
Wed 8/711:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 8/136:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/11$179
Fri 5/319:11 amSFO - MDW
Nonstop4h 12mFrontier
Sat 6/154:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$180
Sat 6/19:11 amSFO - MDW
Nonstop4h 12mFrontier
Mon 6/34:41 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/11$181
Wed 6/59:09 amSFO - MDW
Nonstop4h 11mFrontier
Mon 6/174:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/11$186
Fri 5/319:11 amSFO - MDW
Nonstop4h 12mFrontier
Mon 6/34:41 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/11$187
Tue 6/2511:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Wed 7/36:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/11$189
San Francisco to Illinois flights leaving soon
Find last-minute flight options from San Francisco to Illinois for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 2,659,571 searches. Data last updated May 12, 2024.
Have a look at some of the flights available from San Francisco to Illinois departing last-minute. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 5/189:11 amSFO - MDW
Nonstop4h 12mFrontier
Mon 5/209:10 pmMDW - SFO
1 stop26h 52mFrontier
Deal found 5/11$159
Sat 5/189:11 amSFO - MDW
Nonstop4h 12mFrontier
Mon 5/209:10 pmMDW - SFO
1 stop26h 52mFrontier
Deal found 5/11$164
Mon 5/2011:07 pmSFO - ORD
1 stop11h 17mFrontier
Wed 5/227:59 pmORD - SFO
1 stop6h 42mFrontier
Deal found 5/10$178
Tue 5/216:33 pmSFO - ORD
1 stop8h 27mFrontier
Sat 5/257:59 pmORD - SFO
1 stop6h 42mFrontier
Deal found 5/11$180
Tue 5/216:33 pmSFO - ORD
1 stop8h 27mMultiple Airlines
Wed 5/297:00 amORD - SFO
Nonstop4h 37mMultiple Airlines
Deal found 5/10$203
Fri 5/1712:59 amSFO - ORD
1 stop21h 19mFrontier
Mon 5/207:59 pmORD - SFO
1 stop28h 03mFrontier
Deal found 5/11$204
Sat 5/1812:07 pmSFO - ORD
1 stop14h 53mFrontier
Wed 5/227:59 pmORD - SFO
1 stop28h 09mFrontier
Deal found 5/10$205
Fri 5/1711:07 pmSFO - ORD
1 stop15h 17mFrontier
Mon 5/207:59 pmORD - SFO
1 stop28h 03mFrontier
Deal found 5/10$206
Sat 5/186:34 pmSFO - ORD
1 stop8h 26mFrontier
Sat 5/257:59 pmORD - SFO
1 stop6h 42mFrontier
Deal found 5/11$207
One-way flights to Illinois from San Francisco
Search for one-way flight options from San Francisco to Illinois. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 2,659,571 searches. Data last updated May 12, 2024.
Some of the best available deals we've found on one-way flights from San Francisco to Illinois. Users can also find round-trip San Francisco to Illinois flights by using the search form above.
Sat 5/189:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/11$41
Wed 6/59:09 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/11$42
Wed 9/49:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/11$44
Sat 9/149:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/11$47
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/11$49
Wed 6/59:09 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/11$52
Wed 10/239:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/11$59
Fri 5/319:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/11$62
Fri 8/239:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/11$64
Find flights from San Francisco to Illinois within your budget
Customize your flight search to find flights from San Francisco 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 2,659,571 searches. Data last updated May 12, 2024.
Fly from
Any airport
Fly to
Any airport
Budget
$159 - $236
Route
Depart
Return
Price
San FranciscoLambert-St Louis
SFO - STL
SFOSTL
San Francisco
Sat 6/1
1 stop22h 06m
Lambert-St Louis
Wed 6/5
1 stop28h 32m
$159
San FranciscoLambert-St Louis
SFO - STL
SFOSTL
San Francisco
Fri 6/7
1 stop9h 24m
Lambert-St Louis
Tue 6/11
1 stop18h 32m
$164
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Wed 8/7
Nonstop4h 21m
Chicago O'Hare Intl
Tue 8/13
Nonstop4h 37m
$179
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Thu 5/30
1 stop15h 43m
Chicago O'Hare Intl
Sat 6/1
Nonstop4h 44m
$182
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Thu 5/30
1 stop15h 43m
Chicago O'Hare Intl
Mon 6/3
1 stop6h 42m
$183
San FranciscoGreater Peoria
SFO - PIA
SFOPIA
San Francisco
Wed 10/2
1 stop7h 34m
Greater Peoria
Sat 10/5
1 stop8h 08m
$203
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Wed 6/12
Nonstop4h 13m
Chicago O'Hare Intl
Sat 6/15
Nonstop4h 44m
$209
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Mon 7/1
1 stop17h 07m
Chicago O'Hare Intl
Thu 7/4
1 stop15h 48m
$225
San FranciscoChicago Midway
SFO - MDW
SFOMDW
San Francisco
Mon 8/5
1 stop8h 59m
Chicago Midway
Thu 8/15
1 stop6h 48m
$236
No data available for this route at this time. Please check back soon.
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 May 12, 2024.
Get a feel of what it's like to fly with United Airlines, Alaska Airlines and Frontier from San Francisco to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
9,147 reviews
Crew
8.6
Entertainment
7.3
Comfort
7.9
Food
7.3
Boarding
8.2
Overall
8.1
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
9,147 reviews
9,147 reviews
Crew
8.6
Entertainment
7.3
Comfort
7.9
Food
7.3
Boarding
8.2
Overall
8.1
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
10,751 reviews
9,147 reviews
Crew
8.6
Entertainment
7.3
Comfort
7.9
Food
7.3
Boarding
8.2
Overall
8.1
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
2,933 reviews
9,147 reviews
Crew
8.6
Entertainment
7.3
Comfort
7.9
Food
7.3
Boarding
8.2
Overall
8.1
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
419 reviews
9,147 reviews
Crew
8.6
Entertainment
7.3
Comfort
7.9
Food
7.3
Boarding
8.2
Overall
8.1
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
10,997 reviews
9,147 reviews
Crew
8.6
Entertainment
7.3
Comfort
7.9
Food
7.3
Boarding
8.2
Overall
8.1
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
Related info for your journey
Find useful and relevant information for your journey from San Francisco 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
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for San Francisco to IllinoisSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from San Francisco to Illinois
Discover the top 6 airlines that operate flights from San Francisco 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 2,659,571 searches. Data last updated May 12, 2024.
Search flights from San Francisco to Illinois by cabin class
Find flights from San Francisco to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from San Francisco to Illinois
Find hourly flight availability from San Francisco 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 May 12, 2024.
| 30%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 31%of flight departures | Morning6 am to noon |
| 18%of flight departures | AfternoonNoon to 6 pm |
| 21%of flight departures | Evening6 pm to midnight |
Midnight
6 AM
Noon
6 PM
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from San Francisco to Illinois?
Deals for San Francisco to Illinois flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from San Francisco to Illinois?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from San Francisco to Illinois.
Can Cheapflights find flights from San Francisco to Illinois with no change fees?
Certainly. Search results for flights to Illinois from San Francisco shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.
Can Cheapflights notify me if prices for flights from San Francisco to Illinois become cheaper?
Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Illinois from San Francisco today and book when prices fit your budget.