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$44+ Cheap flights from San Francisco (SFO) 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 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
Jul 30 — Aug 61
From?
To?
Tue 7/30
Tue 8/6
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 48% 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 $320.

What is the cheapest month to fly from San Francisco to Illinois?

September can be a great time to fly to Illinois from San Francisco with a flight ticket averaging about $313. Cheapflights users have found deals in the month of September for as cheap as $99. The most expensive prices can be found in the month of March.

What is the cheapest time of day to fly from SFO to 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 San Francisco to Illinois flights in July & August 2024

Find cheap flight options from San Francisco to Illinois specifically for the months of July and August 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,752,877 searches. Prices were last updated on July 25, 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.
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2410:05 pmSFO - STL
1 stop22h 07mFrontier
Sat 8/318:55 pmSTL - SFO
1 stop13h 17mFrontier
Deal found 7/25$135
This deal was found by Cheapflights users on 7/25. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/201:27 pmSFO - ORD
1 stop8h 51mFrontier
Sat 8/245:24 pmORD - SFO
1 stop8h 35mFrontier
Deal found 7/25$138
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2410:05 pmSFO - STL
1 stop22h 07mFrontier
Sat 8/317:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$139
This Frontier deal was found by Cheapflights users on 7/25. 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.
Tue 8/206:00 amSFO - STL
1 stop10h 48mFrontier
Wed 8/217:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$140
This Frontier deal was found by Cheapflights users on 7/25. 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.
Sat 8/176:00 amSFO - STL
1 stop10h 48mFrontier
Tue 8/207:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$144
This Frontier deal was found by Cheapflights users on 7/25. 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.
Thu 8/151:47 pmSFO - STL
1 stop6h 25mFrontier
Tue 8/207:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$147
This Frontier deal was found by Cheapflights users on 7/25. 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.
Sat 8/176:00 amSFO - STL
1 stop10h 48mFrontier
Thu 8/2211:12 pmSTL - SFO
1 stop10h 30mFrontier
Deal found 7/25$148
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/156:00 amSFO - STL
1 stop10h 48mFrontier
Mon 8/199:24 pmSTL - SFO
1 stop28h 35mFrontier
Deal found 7/24$151
This eDestinos deal was found by Cheapflights users on 7/25. 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.
Thu 8/298:00 amSFO - ORD
1 stop10h 44mFrontier
Mon 9/25:24 pmORD - SFO
1 stop25h 50mFrontier
Deal found 7/25$152

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 2,752,877 searches. Data last updated July 25, 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.
This Priceline deal was found by Cheapflights users on 7/25. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/169:03 amSFO - MDW
Nonstop4h 11mFrontier
Wed 10/234:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 7/25$98
This Frontier deal was found by Cheapflights users on 7/24. 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 10/169:03 amSFO - MDW
Nonstop4h 11mFrontier
Sat 10/194:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 7/24$108
This Priceline deal was found by Cheapflights users on 7/24. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/79:03 amSFO - MDW
Nonstop4h 11mFrontier
Mon 12/94:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 7/24$130
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/11:48 pmSFO - STL
1 stop7h 31mFrontier
Wed 10/98:00 pmSTL - SFO
1 stop5h 58mFrontier
Deal found 7/25$133
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2410:05 pmSFO - STL
1 stop22h 07mFrontier
Sat 8/318:55 pmSTL - SFO
1 stop13h 17mFrontier
Deal found 7/25$135
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/2410:05 pmSFO - STL
1 stop22h 07mFrontier
Sat 8/317:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$139
This Frontier deal was found by Cheapflights users on 7/25. 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.
Tue 8/206:00 amSFO - STL
1 stop10h 48mFrontier
Wed 8/217:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$140
This Frontier deal was found by Cheapflights users on 7/25. 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.
Sat 8/176:00 amSFO - STL
1 stop10h 48mFrontier
Tue 8/207:48 pmSTL - SFO
1 stop6h 11mFrontier
Deal found 7/25$144
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/71:48 pmSFO - STL
1 stop7h 45mFrontier
Thu 9/125:23 pmSTL - SFO
1 stop16h 30mFrontier
Deal found 7/25$145

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 2,752,877 searches. Data last updated July 25, 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.
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Wed 8/74:08 pmSFO - ORD
1 stop9h 59mFrontier
Mon 8/128:27 pmORD - SFO
1 stop22h 47mFrontier
Deal found 7/25$166
This mytrip.com deal was found by Cheapflights users on 7/24. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/3012:58 amSFO - STL
1 stop6h 27mFrontier
Wed 8/710:32 pmSTL - SFO
1 stop11h 10mFrontier
Deal found 7/24$176
This Trip.com deal was found by Cheapflights users on 7/24. 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.
Mon 8/512:59 amSFO - ORD
1 stop8h 30mFrontier
Mon 8/128:27 pmORD - SFO
1 stop22h 47mFrontier
Deal found 7/24$182
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Wed 8/74:08 pmSFO - ORD
1 stop9h 59mFrontier
Mon 8/128:27 pmORD - SFO
1 stop22h 47mFrontier
Deal found 7/25$191
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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.
Sat 8/310:30 pmSFO - ORD
1 stop29h 13mFrontier
Mon 8/128:27 pmORD - SFO
1 stop22h 47mFrontier
Deal found 7/25$192
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/19:15 pmSFO - STL
1 stop12h 31mFrontier
Sun 8/410:32 pmSTL - SFO
1 stop28h 12mFrontier
Deal found 7/25$212
This Cheapflightsfares deal was found by Cheapflights users on 7/24. 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.
Fri 8/27:20 pmSFO - ORD
1 stop25h 38mFrontier
Wed 8/78:27 pmORD - SFO
1 stop16h 37mFrontier
Deal found 7/24$218
This United Airlines deal was found by Cheapflights users on 7/24. 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.
Wed 8/712:15 amSFO - ORD
Nonstop4h 15mUnited Airlines
Sat 8/2410:40 amORD - SFO
Nonstop4h 36mUnited Airlines
Deal found 7/24$219
This CheapOair deal was found by Cheapflights users on 7/25. 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 8/410:33 amSFO - STL
1 stop22h 49mFrontier
Tue 8/610:32 pmSTL - SFO
1 stop14h 31mFrontier
Deal found 7/25$220

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 2,752,877 searches. Data last updated July 25, 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.
This Frontier deal was found by Cheapflights users on 7/23. 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 10/239:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 7/23$44
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/169:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 7/24$46
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/109:03 amSFO - MDW
Nonstop4h 10mFrontier
Deal found 7/25$51
This Frontier deal was found by Cheapflights users on 7/23. 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.
Sat 10/269:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 7/23$64
This mytrip.com deal was found by Cheapflights users on 7/25. 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.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/111:48 pmSFO - STL
1 stop8h 01mFrontier
Deal found 7/25$64
This Kiwi.com deal was found by Cheapflights users on 7/24. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/199:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 7/24$66
This Trip.com deal was found by Cheapflights users on 7/24. 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.
Mon 10/2112:58 amSFO - MDW
1 stop8h 54mFrontier
Deal found 7/24$67
This Trip.com deal was found by Cheapflights users on 7/24. 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.
Mon 8/2610:05 pmSFO - ORD
1 stop24h 13mFrontier
Deal found 7/24$68
This Trip.com deal was found by Cheapflights users on 7/24. 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.
Tue 8/206:00 amSFO - MDW
1 stop9h 10mFrontier
Deal found 7/24$69

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 2,752,877 searches. Data last updated July 25, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$98 - $193

Route

Depart

Return

Price

San FranciscoChicago Midway

SFO - MDW

SFOMDW

San Francisco

Wed 10/16

Nonstop4h 11m

Chicago Midway

Wed 10/23

Nonstop4h 38m

$98

San FranciscoChicago Midway

SFO - MDW

SFOMDW

San Francisco

Wed 10/16

Nonstop4h 11m

Chicago Midway

Sat 10/19

Nonstop4h 38m

$108

San FranciscoChicago Midway

SFO - MDW

SFOMDW

San Francisco

Sat 10/12

Nonstop4h 11m

Chicago Midway

Wed 10/16

Nonstop4h 38m

$118

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

Sat 9/14

Nonstop4h 22m

Chicago O'Hare Intl

Tue 9/17

Nonstop4h 43m

$119

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

Wed 10/16

Nonstop4h 19m

Chicago O'Hare Intl

Wed 10/23

Nonstop4h 43m

$141

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

Wed 10/30

Nonstop4h 13m

Chicago O'Hare Intl

Tue 11/5

Nonstop4h 51m

$144

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

Thu 9/12

1 stop6h 31m

Chicago O'Hare Intl

Wed 9/18

1 stop9h 12m

$146

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

Thu 10/31

Nonstop4h 15m

Chicago O'Hare Intl

Sat 11/2

Nonstop4h 44m

$150

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

Sat 9/21

1 stop7h 16m

Chicago O'Hare Intl

Wed 9/25

1 stop9h 04m

$193

Flights are sorted by cheapest first

Deals found on 7/25

No data available for this route at this time. Please check back soon.

Best time to book a flight from San Francisco to Illinois

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

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 July 25, 2024.
Get a feel of what it's like to fly with United Airlines, Alaska Airlines and American Airlines 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.
Southwest
8.2
Very good
5,641 reviews

Comfort

8.1

Overall

8.2

Food

7.3

Crew

8.7

Boarding

8.3

Entertainment

7.8

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.2
Very good
5,641 reviews
Southwest
8.2
Very good
5,641 reviews

Comfort

8.1

Overall

8.2

Food

7.3

Crew

8.7

Boarding

8.3

Entertainment

7.8

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.1
Very good
9,365 reviews
Southwest
8.2
Very good
5,641 reviews

Comfort

8.1

Overall

8.2

Food

7.3

Crew

8.7

Boarding

8.3

Entertainment

7.8

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very good
9,630 reviews
Southwest
8.2
Very good
5,641 reviews

Comfort

8.1

Overall

8.2

Food

7.3

Crew

8.7

Boarding

8.3

Entertainment

7.8

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Porter Airlines
7.6
Good
344 reviews
Southwest
8.2
Very good
5,641 reviews

Comfort

8.1

Overall

8.2

Food

7.3

Crew

8.7

Boarding

8.3

Entertainment

7.8

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

United Airlines
7.4
Good
10,000 reviews
Southwest
8.2
Very good
5,641 reviews

Comfort

8.1

Overall

8.2

Food

7.3

Crew

8.7

Boarding

8.3

Entertainment

7.8

Reviews

1 / 10

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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.

  • What airport do you fly from for flights from San Francisco to Illinois?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Illinois. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

  • Can I find flights from San Francisco to Illinois for under $100 on Cheapflights?

    Yes, there are multiple flights from San Francisco to Illinois for under $100. The cheapest flight booked recently is on Frontier for just $98, but on average you can expect to pay $135.

  • Are there nonstop flights from San Francisco to Illinois for under $100 on Cheapflights?

    Cheapflights has at least 20 direct flights from San Francisco to Illinois under $100. A good price for a nonstop flight from San Francisco to Illinois is less than $147.

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

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

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

    Nonstop flights can be found on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

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

    On average, you can expect to see 29 flights from San Francisco to Illinois a day.
    Early Morning (Midnight to 6am) - 10% of flight departures
    Morning (6am - Noon) - 14% of flight departures
    Afternoon (Noon - 6pm) - 21% of flight departures
    Evening (6pm - Midnight) - 55% of flight departures

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

    For as low as $98, Frontier can have you in Illinois from San Francisco in 4h 11m. Airlines will cover a distance of 1851 mi. All flights are typically nonstop.

  • What are the most popular routes from San Francisco to Illinois?

    The most popular route from San Francisco to Illinois is San Francisco - Chicago O'Hare Intl. You may also consider San Francisco - Chicago Midway or San Francisco - Lambert-St Louis.

  • What are the most reliable airlines from San Francisco to Illinois?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco to Illinois on time: Brussels Airlines (84%), Austrian Airlines (83%), Lufthansa (82%).

  • What are the cheapest flights from San Francisco to Illinois?

    Looking at all options, your cheapest flight can be booked for $114. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $149 on average our data indicates $956 when flying from San Francisco to Illinois.

  • What does SFO to ORD mean?

    These are just IATA (International Air Transport Association) codes. They are used in aviation to identify and differentiate airports. That’s why a San Francisco Airport to Chicago O'Hare Intl Airport flight would often be abbreviated as a SFO to ORD flight. Ready for more IATA code knowledge? These are related airports for your current travel destination: Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI).

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

    The amount of baggage you can bring on your San Francisco to Illinois 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 San Francisco to Illinois with specific airlines?

    Yes, Cheapflights allows you to browse and filter San Francisco to Illinois 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 San Francisco to Illinois that include hotel bookings?

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

  • How can I find direct flights from San Francisco to Illinois?

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

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

    Yes. Cheapflights offers flight deals from San Francisco to Illinois 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 San Francisco to Illinois that allow pets onboard?

    Many airlines flying from San Francisco to Illinois 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 San Francisco to Illinois?

    Yes, you can often find last-minute deals on San Francisco to Illinois 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 San Francisco to Illinois flight deals updated?

    The San Francisco to Illinois flight deals you see on this page were last updated on 7/25.

  • What are the most popular airlines that fly from San Francisco to Illinois?

    The most popular airlines flying from San Francisco to Illinois are American Airlines, Alaska Airlines and Delta. Something to consider prior to booking your flight.

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

    Currently, February is the cheapest month in which you can book a flight from San Francisco to Illinois (average of $245). Flying from San Francisco to Illinois in June is currently the most expensive (average of $308). 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.

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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 2,752,877 searches. Data last updated July 25, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$67Average$217FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$106Average$257FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$115Average$298FlexibilityNo cancel feeOn-time75%
DeltaCheapest$124Average$304FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$176Average$463FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$206Average$493FlexibilityNo cancel feeOn-time69%
Los Angeles to New York John F Kennedy Intl Airport flights
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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.
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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 July 25, 2024.
8%of flight departuresEarly morningMidnight to 6 am
43%of flight departuresMorning6 am to noon
27%of flight departuresAfternoonNoon to 6 pm
22%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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