Cheap flights from San Francisco (SFO) to Illinois from $49

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 10/2. 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. 21 — may. 281

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 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 2,637,452 searches. Data last updated mayo 16, 2024.
Find some of the cheapest Alaska Airlines flights traveling from San Francisco to Illinois. Deals update often to give you more flight options matching your criteria
mié. 8/1411:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
mar. 8/205:25 pmORD - SFO
Nonstop4h 44mAlaska Airlines
Deal found 5/15$179
mié. 7/3111:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
mié. 8/76:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/16$184
mar. 7/911:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
sáb. 7/276:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/16$189
mar. 7/97:55 pmSFO - ORD
1 stop7h 20mAlaska Airlines
sáb. 7/276:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/16$198
lun. 8/511:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
jue. 8/86:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/15$209
mié. 5/2911:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
vie. 5/315:28 pmORD - SFO
1 stop8h 16mAlaska Airlines
Deal found 5/15$211
mar. 6/1111:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
dom. 6/166:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 5/15$223
sáb. 5/2511:12 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
vie. 5/315:55 pmORD - SFO
Nonstop4h 44mAlaska Airlines
Deal found 5/15$238
sáb. 5/2511:12 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
vie. 5/315:28 pmORD - SFO
1 stop8h 16mAlaska Airlines
Deal found 5/14$247

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 2,637,452 searches. Data last updated mayo 16, 2024.
Browse through some of the cheapest United 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.
sáb. 8/106:30 pmSFO - ORD
Nonstop4h 15mUnited Airlines
mié. 8/149:15 pmORD - SFO
Nonstop4h 41mUnited Airlines
Deal found 5/16$193
sáb. 8/1011:45 pmSFO - ORD
Nonstop4h 13mUnited Airlines
mié. 8/145:16 amORD - SFO
1 stop6h 23mUnited Airlines
Deal found 5/15$218
mié. 5/223:55 pmSFO - ORD
1 stop6h 26mUnited Airlines
mié. 5/298:14 pmORD - SFO
Nonstop4h 46mUnited Airlines
Deal found 5/15$241
lun. 6/1711:34 pmSFO - ORD
Nonstop4h 13mUnited Airlines
vie. 6/214:23 pmORD - SFO
Nonstop4h 37mUnited Airlines
Deal found 5/15$257
lun. 6/101:10 amSFO - ORD
Nonstop4h 20mUnited Airlines
lun. 6/179:19 pmORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 5/15$261
mié. 8/215:15 amSFO - PIA
1 stop7h 46mUnited Airlines
mié. 8/286:45 amPIA - SFO
1 stop8h 35mUnited Airlines
Deal found 5/14$264
mié. 5/225:30 amSFO - ORD
Nonstop4h 21mUnited Airlines
mié. 5/2910:15 pmORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 5/15$274
mié. 5/226:35 pmSFO - ORD
Nonstop4h 21mUnited Airlines
lun. 6/310:15 pmORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 5/15$280
mié. 5/225:30 amSFO - ORD
Nonstop4h 21mUnited Airlines
lun. 6/310:15 pmORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 5/15$301

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 2,637,452 searches. Prices were last updated on mayo 16, 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.
sáb. 6/159:09 amSFO - MDW
Nonstop4h 11mFrontier
vie. 6/214:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$120
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
mié. 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$138
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
vie. 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$140
mié. 6/129:09 amSFO - MDW
Nonstop4h 11mFrontier
mié. 6/194:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$147
vie. 5/319:11 amSFO - MDW
Nonstop4h 12mFrontier
mié. 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$154
lun. 6/249:09 amSFO - MDW
Nonstop4h 11mFrontier
mié. 6/264:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$155
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
mié. 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$160
lun. 5/279:15 amSFO - MDW
Nonstop4h 12mFrontier
sáb. 6/14:28 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/16$162
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
sáb. 6/84:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$164

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 2,637,452 searches. Data last updated mayo 16, 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.
sáb. 9/219:03 amSFO - MDW
Nonstop4h 11mFrontier
mié. 9/254:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$98
mié. 8/219:03 amSFO - MDW
Nonstop4h 11mFrontier
sáb. 8/244:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$100
mié. 9/189:03 amSFO - MDW
Nonstop4h 11mFrontier
lun. 9/234:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$118
sáb. 6/159:09 amSFO - MDW
Nonstop4h 11mFrontier
vie. 6/214:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$120
mié. 10/29:03 amSFO - MDW
Nonstop4h 11mFrontier
vie. 10/44:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$137
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
mié. 6/54:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$138
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
vie. 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$140
mié. 11/139:03 amSFO - MDW
Nonstop4h 11mFrontier
lun. 11/184:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$142
sáb. 11/29:03 amSFO - MDW
Nonstop4h 11mFrontier
lun. 11/44:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$145

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 2,637,452 searches. Data last updated mayo 16, 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.
sáb. 9/219:03 amSFO - MDW
Nonstop4h 11mFrontier
mié. 9/254:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$98
mié. 8/219:03 amSFO - MDW
Nonstop4h 11mFrontier
sáb. 8/244:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$100
mié. 9/189:03 amSFO - MDW
Nonstop4h 11mFrontier
lun. 9/234:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$118
sáb. 6/159:09 amSFO - MDW
Nonstop4h 11mFrontier
vie. 6/214:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$120
mié. 10/29:03 amSFO - MDW
Nonstop4h 11mFrontier
vie. 10/44:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$137
vie. 9/69:03 amSFO - MDW
Nonstop4h 11mFrontier
lun. 9/94:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/16$138
lun. 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
vie. 6/74:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/15$140
mié. 9/49:03 amSFO - MDW
Nonstop4h 11mFrontier
sáb. 9/74:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/16$145
vie. 9/139:03 amSFO - MDW
Nonstop4h 11mFrontier
lun. 9/164:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/15$146

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 2,637,452 searches. Data last updated mayo 16, 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.
mié. 5/229:11 amSFO - MDW
Nonstop4h 12mFrontier
sáb. 6/14:28 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/15$167
mar. 5/217:49 amSFO - MDW
1 stop7h 23mFrontier
sáb. 6/14:28 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/15$170
mié. 5/229:11 amSFO - MDW
Nonstop4h 12mFrontier
lun. 6/34:41 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/15$177
sáb. 5/2511:07 pmSFO - ORD
1 stop11h 17mFrontier
mié. 6/59:53 pmORD - SFO
1 stop10h 54mFrontier
Deal found 5/16$179
sáb. 5/2511:07 pmSFO - ORD
1 stop11h 17mFrontier
sáb. 6/17:59 pmORD - SFO
1 stop6h 42mFrontier
Deal found 5/15$180
sáb. 5/2511:07 pmSFO - ORD
1 stop11h 17mFrontier
jue. 6/68:23 pmORD - SFO
1 stop17h 36mFrontier
Deal found 5/16$182
sáb. 5/2511:07 pmSFO - ORD
1 stop11h 17mFrontier
mar. 5/287:59 pmORD - SFO
1 stop28h 08mFrontier
Deal found 5/15$184
mié. 5/229:11 amSFO - MDW
Nonstop4h 12mFrontier
vie. 5/314:18 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/15$185
sáb. 5/2511:07 pmSFO - ORD
1 stop11h 17mFrontier
vie. 5/318:05 pmORD - SFO
1 stop6h 36mFrontier
Deal found 5/15$185

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 2,637,452 searches. Data last updated mayo 16, 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.
mié. 10/29:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/15$49
sáb. 9/149:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/16$50
sáb. 6/159:09 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/15$54
mié. 11/69:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/16$59
mié. 10/309:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/14$65
lun. 5/279:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/15$69
vie. 9/209:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/15$70
lun. 8/199:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/15$71
lun. 6/249:09 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/14$74

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 2,637,452 searches. Data last updated mayo 16, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$139 - $245

Route

Depart

Return

Price

San FranciscoLambert-St Louis

SFO - STL

SFOSTL

San Francisco

mar. 5/28

1 stop6h 37m

Lambert-St Louis

mar. 6/4

1 stop9h 50m

$139

San FranciscoLambert-St Louis

SFO - STL

SFOSTL

San Francisco

lun. 5/27

1 stop10h 10m

Lambert-St Louis

mar. 6/4

1 stop7h 18m

$140

San FranciscoLambert-St Louis

SFO - STL

SFOSTL

San Francisco

sáb. 6/1

1 stop13h 39m

Lambert-St Louis

mar. 6/4

1 stop28h 43m

$141

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

mié. 8/14

Nonstop4h 21m

Chicago O'Hare Intl

mar. 8/20

Nonstop4h 44m

$179

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

sáb. 8/10

Nonstop4h 15m

Chicago O'Hare Intl

mié. 8/14

Nonstop4h 41m

$193

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

sáb. 5/25

1 stop11h 17m

Chicago O'Hare Intl

vie. 5/31

Nonstop4h 44m

$195

San FranciscoGreater Peoria

SFO - PIA

SFOPIA

San Francisco

mié. 8/21

1 stop8h 56m

Greater Peoria

mar. 8/27

1 stop9h 20m

$201

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

jue. 8/8

1 stop7h 37m

Chicago O'Hare Intl

mar. 8/13

1 stop8h 09m

$236

San FranciscoChicago O'Hare Intl

SFO - ORD

SFOORD

San Francisco

lun. 6/17

1 stop7h 54m

Chicago O'Hare Intl

jue. 6/20

1 stop14h 02m

$245

Flights are sorted by cheapest first

Deals found on 5/15

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 mayo 16, 2024.
Get a feel of what it's like to fly with Alaska Airlines, United Airlines and Delta 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
6,040 reviews

Food

7.3

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Crew

8.7

Overall

8.2

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
6,040 reviews
Southwest
8.2
Very good
6,040 reviews

Food

7.3

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Crew

8.7

Overall

8.2

Reviews

1 / 10

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

8.1
Very good
9,157 reviews
Southwest
8.2
Very good
6,040 reviews

Food

7.3

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Crew

8.7

Overall

8.2

Reviews

1 / 10

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

8.0
Very good
10,673 reviews
Southwest
8.2
Very good
6,040 reviews

Food

7.3

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Crew

8.7

Overall

8.2

Reviews

1 / 10

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

7.5
Good
2,919 reviews
Southwest
8.2
Very good
6,040 reviews

Food

7.3

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Crew

8.7

Overall

8.2

Reviews

1 / 10

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

7.4
Good
10,924 reviews
Southwest
8.2
Very good
6,040 reviews

Food

7.3

Boarding

8.3

Comfort

8.1

Entertainment

7.8

Crew

8.7

Overall

8.2

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 $200 on Cheapflights?

    Yes, there are multiple flights from San Francisco to Illinois for under $200. The cheapest flight booked recently is on Frontier for just $139, but on average you can expect to pay $164.

  • 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 $142.

  • 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 63 flights from San Francisco to Illinois a day.
    Early Morning (Midnight to 6am) - 35% of flight departures
    Morning (6am - Noon) - 5% of flight departures
    Afternoon (Noon - 6pm) - 40% of flight departures
    Evening (6pm - Midnight) - 21% of flight departures

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

    For as low as $139, Frontier can have you in Illinois from San Francisco in 4h 21m. Airlines will cover a distance of 1851 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $49. Sun Country Air flights start at $88 while deals on Alaska Airlines start at $90 one-way.

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

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

  • 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: Asiana Airlines (90%), Brussels Airlines (89%), Royal Jordanian (88%).

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

    Looking at all options, your cheapest flight can be booked for $109. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $175 on average our data indicates $1,214 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 5/15.

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 San Francisco to Illinois
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 2,637,452 searches. Data last updated mayo 16, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$68Average$237FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Alaska AirlinesCheapest$115Average$301FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$123Average$311FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Spirit AirlinesCheapest$127Average$274FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
American AirlinesCheapest$158Average$494FlexibilityNo cancel feeOn-time71%
Search American Airlines flights
United AirlinesCheapest$193Average$493FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

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 mayo 16, 2024.
27%of flight departuresEarly morningMidnight to 6 am
12%of flight departuresMorning6 am to noon
32%of flight departuresAfternoonNoon to 6 pm
29%of flight departuresEvening6 pm to midnight
Midnight
6 AM
Noon
6 PM

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