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Cheap flights from Illinois to San Francisco (SFO) from $44

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 9/7. 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.
ORD — SFO
May 9 — May 161
From?
To?
Thu 5/9
Thu 5/16
1 adult, Economy
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How far in advance should I book a flight from Illinois to San Francisco?

To save on the cost of your flight from Illinois to San Francisco, book at least 57 days before your planned departure. Booking around this time can save you about 40% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $354 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $517.

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

September is one of the best times of the year to fly to San Francisco from Illinois. Prices for September average $338 per person but you can even find prices for as low as $119. The most expensive prices can be found in the month of March. Opting for a September flight can save you 21% on your journey compared to booking in March

When is the cheapest time to fly from Illinois to San Francisco (IL - SFO)?

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 as you normally would.

Cheap Sun Country Air flights from Illinois to San Francisco

Explore cheap flight options specifically provided by Sun Country Air for the route between Illinois and San Francisco. 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 2,864,334 searches. Data last updated May 4, 2024.
Check out some of the cheapest Sun Country Air flights we've come across from Illinois to San Francisco. Make sure to double check the flight details before booking.
Wed 6/268:05 pmORD - SFO
1 stop14h 06mSun Country Air
Mon 7/111:59 pmSFO - ORD
1 stop17h 07mSun Country Air
Deal found 5/2$221
Thu 8/158:05 pmORD - SFO
1 stop14h 13mSun Country Air
Sun 8/1811:59 pmSFO - ORD
1 stop15h 20mSun Country Air
Deal found 5/3$225
Thu 6/208:05 pmORD - SFO
1 stop14h 02mSun Country Air
Sun 6/2311:59 pmSFO - ORD
1 stop17h 07mSun Country Air
Deal found 5/2$255
Sun 5/268:30 amORD - SFO
1 stop10h 41mSun Country Air
Mon 6/39:01 amSFO - ORD
1 stop6h 17mSun Country Air
Deal found 5/2$276

Cheap Alaska Airlines flights from Illinois to San Francisco

Explore cheap flight options specifically provided by Alaska Airlines for the route between Illinois and San Francisco. 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 2,864,334 searches. Data last updated May 4, 2024.
Some of the best deals we've found on Alaska Airlines flights traveling from Illinois to San Francisco. Check back soon if you're not seeing flights that suit your needs.
Wed 5/297:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Sat 6/111:12 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
Deal found 5/2$189
Wed 5/292:54 pmORD - SFO
1 stop8h 41mAlaska Airlines
Thu 5/3011:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
Deal found 5/2$198
Sat 5/187:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Sun 5/2611:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
Deal found 5/3$202
Sat 7/136:20 pmORD - SFO
Nonstop4h 40mAlaska Airlines
Wed 7/1711:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Deal found 5/2$209
Sat 5/187:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Tue 5/284:55 pmSFO - ORD
1 stop9h 45mAlaska Airlines
Deal found 5/2$211
Sat 5/187:00 amORD - SFO
Nonstop4h 37mAlaska Airlines
Tue 5/217:55 pmSFO - ORD
1 stop6h 45mAlaska Airlines
Deal found 5/3$224
Tue 7/26:35 amORD - SFO
Nonstop4h 37mAlaska Airlines
Sun 7/1411:59 pmSFO - ORD
Nonstop4h 21mAlaska Airlines
Deal found 5/1$228
Mon 5/132:53 pmORD - SFO
1 stop8h 47mAlaska Airlines
Wed 5/2911:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
Deal found 5/3$341
Mon 5/135:55 pmORD - SFO
Nonstop4h 52mAlaska Airlines
Wed 5/2911:57 pmSFO - ORD
Nonstop4h 23mAlaska Airlines
Deal found 5/3$377

Cheap Illinois to San Francisco flights in May & June 2024

Find cheap flight options from Illinois to San Francisco specifically for the months of May and June 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Prices were last updated on May 4, 2024.
Check out some of the best flight deals from Illinois to San Francisco in 2024. Check back soon for alternative fares.
Tue 5/1412:29 pmMDW - SFO
Nonstop4h 39mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$92
Tue 5/1412:29 pmMDW - SFO
Nonstop4h 39mFrontier
Mon 5/209:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$117
Mon 5/204:41 pmMDW - SFO
Nonstop4h 29mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$128
Fri 5/314:18 pmMDW - SFO
Nonstop4h 29mFrontier
Mon 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$135
Sat 5/257:23 pmSTL - SFO
1 stop7h 18mFrontier
Tue 5/286:33 pmSFO - STL
1 stop13h 40mFrontier
Deal found 5/3$135
Sat 5/254:28 pmMDW - SFO
Nonstop4h 29mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$140
Sat 6/17:23 pmSTL - SFO
1 stop7h 18mFrontier
Tue 6/412:59 amSFO - STL
1 stop6h 30mFrontier
Deal found 5/3$140
Tue 5/1412:29 pmMDW - SFO
Nonstop4h 39mFrontier
Sat 5/189:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$141
Sat 5/254:28 pmMDW - SFO
Nonstop4h 29mFrontier
Sat 6/19:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$142

Illinois to San Francisco 2024 flight deals

Discover exclusive flight deals for travel between Illinois and San Francisco in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 2,864,334 searches. Data last updated May 4, 2024.
Check out some of the best flight deals from Illinois to San Francisco in 2024. Check back soon for alternative fares.
Wed 9/114:09 pmMDW - SFO
Nonstop4h 38mFrontier
Sat 9/219:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$88
Sat 9/144:09 pmMDW - SFO
Nonstop4h 38mFrontier
Sat 9/219:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$90
Tue 5/1412:29 pmMDW - SFO
Nonstop4h 39mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$92
Tue 5/1412:29 pmMDW - SFO
Nonstop4h 39mFrontier
Mon 5/209:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$117
Wed 10/164:09 pmMDW - SFO
Nonstop4h 38mFrontier
Wed 10/239:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$120
Mon 5/204:41 pmMDW - SFO
Nonstop4h 29mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$128
Fri 5/314:18 pmMDW - SFO
Nonstop4h 29mFrontier
Mon 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$135
Sat 5/257:23 pmSTL - SFO
1 stop7h 18mFrontier
Tue 5/286:33 pmSFO - STL
1 stop13h 40mFrontier
Deal found 5/3$135
Fri 8/234:09 pmMDW - SFO
Nonstop4h 38mFrontier
Mon 8/269:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$136

Non-stop flights to San Francisco from Illinois

Discover non-stop flight options from Illinois to San Francisco. 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 2,864,334 searches. Data last updated May 4, 2024.
Consider booking one of these non-stop flights heading from Illinois to San Francisco. Those looking to potentially save on 1 or 2-stop flights from Illinois to San Francisco should utilize the search form at the the top of the page.
Wed 5/224:18 pmMDW - SFO
Nonstop4h 29mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$160
Sat 5/184:28 pmMDW - SFO
Nonstop4h 29mFrontier
Mon 5/279:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$161
Sat 6/154:18 pmMDW - SFO
Nonstop4h 28mFrontier
Sat 7/139:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$163
Fri 6/284:18 pmMDW - SFO
Nonstop4h 28mFrontier
Sat 7/69:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$166
Wed 5/294:18 pmMDW - SFO
Nonstop4h 29mFrontier
Mon 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$167
Wed 5/294:18 pmMDW - SFO
Nonstop4h 29mFrontier
Mon 6/39:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$168
Fri 7/124:09 pmMDW - SFO
Nonstop4h 38mFrontier
Sat 7/209:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$175
Fri 5/244:18 pmMDW - SFO
Nonstop4h 29mFrontier
Wed 9/259:03 amSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$177
Sat 9/145:05 pmORD - SFO
Nonstop4h 39mAmerican Airlines
Sat 9/218:00 amSFO - ORD
Nonstop4h 25mAmerican Airlines
Deal found 5/3$179

Illinois to San Francisco flights leaving soon

Find last-minute flight options from Illinois to San Francisco 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 2,864,334 searches. Data last updated May 4, 2024.
Consider one of these great deals we found on last-minute flights from Illinois to San Francisco. Tip: verify your flight details before completing your reservation.
Fri 5/1010:59 pmMDW - SFO
1 stop12h 45mFrontier
Tue 5/143:58 pmSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$157
Fri 5/109:16 pmMDW - SFO
2 stops16h 07mFrontier
Tue 5/143:58 pmSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/3$162
Mon 5/1310:59 pmMDW - SFO
1 stop10h 44mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$163
Mon 5/139:55 pmMDW - SFO
2 stops15h 28mFrontier
Wed 5/299:11 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$168
Mon 5/1310:59 pmMDW - SFO
1 stop12h 45mFrontier
Mon 5/209:15 amSFO - MDW
Nonstop4h 12mFrontier
Deal found 5/3$181
Sun 5/1210:59 pmMDW - SFO
1 stop10h 44mFrontier
Tue 5/143:58 pmSFO - MDW
Nonstop4h 11mFrontier
Deal found 5/2$182
Fri 5/1010:17 pmSTL - SFO
2 stops15h 06mFrontier
Sat 5/1112:58 amSFO - STL
1 stop11h 31mFrontier
Deal found 5/3$183
Sat 5/117:51 pmSTL - SFO
1 stop14h 12mFrontier
Tue 5/144:19 pmSFO - STL
1 stop15h 59mFrontier
Deal found 5/3$184
Sat 5/117:51 pmSTL - SFO
1 stop14h 12mFrontier
Mon 5/1312:58 amSFO - STL
1 stop12h 52mFrontier
Deal found 5/3$185

One-way flights to San Francisco from Illinois

Search for one-way flight options from Illinois to San Francisco. 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 2,864,334 searches. Data last updated May 4, 2024.
Users in need of a one-way flight from Illinois to San Francisco can choose from these deals. For those needing a return trip from Illinois, there is a search form available above.
Sat 9/74:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/3$44
Tue 5/1412:29 pmMDW - SFO
Nonstop4h 39mFrontier
Deal found 5/3$48
Wed 5/294:18 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/3$49
Mon 9/94:09 pmMDW - SFO
Nonstop4h 38mFrontier
Deal found 5/3$64
Fri 5/314:18 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/3$66
Tue 6/47:23 pmSTL - SFO
1 stop7h 18mFrontier
Deal found 5/2$70
Sat 6/154:18 pmMDW - SFO
Nonstop4h 28mFrontier
Deal found 5/3$79
Mon 5/204:41 pmMDW - SFO
Nonstop4h 29mFrontier
Deal found 5/3$83
Tue 5/217:23 pmSTL - SFO
1 stop7h 18mFrontier
Deal found 5/3$85

Find flights from Illinois to San Francisco within your budget

Customize your flight search to find flights from Illinois to San Francisco 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 2,864,334 searches. Data last updated May 4, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$135 - $262

Route

Depart

Return

Price

Lambert-St LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 5/25

1 stop7h 18m

San Francisco

Tue 5/28

1 stop13h 40m

$135

Lambert-St LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Sat 6/1

1 stop7h 18m

San Francisco

Tue 6/4

1 stop6h 30m

$140

Lambert-St LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

Wed 5/29

1 stop7h 18m

San Francisco

Sat 6/1

1 stop13h 39m

$150

Chicago O'Hare IntlSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 5/29

Nonstop4h 37m

San Francisco

Sat 6/1

Nonstop4h 23m

$189

Chicago O'Hare IntlSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Fri 5/31

Nonstop4h 44m

San Francisco

Tue 6/4

1 stop8h 27m

$190

Chicago O'Hare IntlSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 6/26

1 stop14h 06m

San Francisco

Mon 7/1

1 stop17h 07m

$221

Chicago O'Hare IntlSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 5/28

1 stop8h 09m

San Francisco

Sat 6/1

Nonstop4h 22m

$236

Chicago O'Hare IntlSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 5/23

Nonstop4h 44m

San Francisco

Tue 5/28

Nonstop4h 20m

$246

Chicago MidwaySan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Thu 7/4

1 stop6h 54m

San Francisco

Fri 7/12

1 stop8h 55m

$262

Flights are sorted by cheapest first

Deals found on 5/3

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

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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. Reviews last updated May 4, 2024.
See what other customers who have flown with Sun Country Air, Alaska Airlines and American Airlines from Illinois to San Francisco have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.2
Very good
6,099 reviews
Check prices

Comfort

8.1

Crew

8.7

Entertainment

7.8

Food

7.3

Boarding

8.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Southwest
8.2
Very good
6,099 reviews
Southwest
8.2
Very good
6,099 reviews
Check prices

Comfort

8.1

Crew

8.7

Entertainment

7.8

Food

7.3

Boarding

8.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Alaska Airlines
8.1
Very good
9,128 reviews
Southwest
8.2
Very good
6,099 reviews
Check prices

Comfort

8.1

Crew

8.7

Entertainment

7.8

Food

7.3

Boarding

8.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Delta
8.1
Very good
10,848 reviews
Southwest
8.2
Very good
6,099 reviews
Check prices

Comfort

8.1

Crew

8.7

Entertainment

7.8

Food

7.3

Boarding

8.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

WestJet
7.6
Good
2,962 reviews
Southwest
8.2
Very good
6,099 reviews
Check prices

Comfort

8.1

Crew

8.7

Entertainment

7.8

Food

7.3

Boarding

8.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Porter Airlines
7.4
Good
433 reviews
Southwest
8.2
Very good
6,099 reviews
Check prices

Comfort

8.1

Crew

8.7

Entertainment

7.8

Food

7.3

Boarding

8.3

Overall

8.2

Reviews

1 / 10

I was very relaxed and calm so I took a brief nap. The flight was pretty smooth.

Related info for your journey

Find useful and relevant information for your journey from Illinois to San Francisco. 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 into for flights to San Francisco from Illinois?

    If you book a flight to San Francisco from Illinois, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.8 mi from the center of San Francisco.

  • Can I find flights from Illinois to San Francisco for under $200 on Cheapflights?

    Yes, there are multiple flights from Illinois to San Francisco for under $200. The cheapest flight booked recently is on Frontier for just $135, but on average you can expect to pay $157.

  • Are there nonstop flights from Illinois to San Francisco for under $200 on Cheapflights?

    Cheapflights has at least 20 direct flights from Illinois to San Francisco under $200. A good price for a nonstop flight from Illinois to San Francisco is less than $178.

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

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

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

    You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Wednesday, Thursday, Saturday.

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

    Travelers can expect 56 flights from Illinois to San Francisco on average per day.
    Early Morning (Midnight to 6am) - 2% of flight departures
    Morning (6am - Noon) - 43% of flight departures
    Afternoon (Noon - 6pm) - 27% of flight departures
    Evening (6pm - Midnight) - 29% of flight departures

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

    Frontier can get you from Illinois to San Francisco in just under 7h 18m. Your travel time can differ by up to . Airlines will cover a distance of 1851 mi.

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

    The cheapest airline one-way is Frontier, with whom users have recently found tickets for as low as $44. However, be on the lookout for offers from Alaska Airlines and United Airlines, as they are both options that can get you from Illinois to San Francisco for a low price.

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

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

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

    Before booking your flight from Illinois to San Francisco check out the most popular airlines for this route: Undisclosed Carrier, American Airlines or Alaska Airlines.

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

    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 Illinois to San Francisco on time: Scandinavian Airlines (91%), ANA (85%), Air China (84%).

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

    While on average a flight from Illinois to San Francisco is generally $793, our data shows the cheapest flight currently is $109. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay $174 for that flight.

  • What does ORD to SFO mean?

    ORD stands for Chicago O'Hare Intl Airport, while SFO stands for San Francisco Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry. Chicago Midway Airport (MDW), Moline Quad-City Airport (MLI), Greater Peoria Airport (PIA), Bloomington-Normal Airport (BMI), Springfield Capital Airport (SPI) are some additional IATA codes for airports related to your trip.

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

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

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

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

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

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

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

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

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

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

    The Illinois to San Francisco flight deals you see on this page were last updated on 5/3.

See more FAQs

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Alternative routes for Illinois to San Francisco
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Top 6 airlines flying from Illinois to San Francisco

Discover the top 6 airlines that operate flights from Illinois to San Francisco. 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 2,864,334 searches. Data last updated May 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$83Average$232FlexibilityNo cancel feeOn-time62%
Search Frontier flights
Spirit AirlinesCheapest$95Average$196FlexibilityNo cancel feeOn-time65%
Search Spirit Airlines flights
Alaska AirlinesCheapest$111Average$298FlexibilityNo cancel feeOn-time75%
Search Alaska Airlines flights
DeltaCheapest$118Average$351FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
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Search flights from Illinois to San Francisco by cabin class

Find flights from Illinois to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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Hourly flight availability from Illinois to San Francisco

Find hourly flight availability from Illinois to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated May 4, 2024.
4%of flight departuresEarly morningMidnight to 6 am
31%of flight departuresMorning6 am to noon
44%of flight departuresAfternoonNoon to 6 pm
21%of flight departuresEvening6 pm to midnight
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Fly with Cheapflights

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How does Cheapflights help users find flights from Illinois to San Francisco?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from Illinois today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Illinois to San Francisco?

Millions of users choose and trust Cheapflights to book the best flight deals from Illinois to San Francisco for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Illinois to San Francisco with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from Illinois to San Francisco flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from Illinois to San Francisco become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from Illinois today and book when prices fit your budget.

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