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$108+ Cheap flights from Illinois to San Francisco (SFO)

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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SFO
dic. 23 — dic. 301
lun. 12/23
lun. 12/30
1 adult, Economy
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Cheap flight deals from Illinois to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Illinois (USIL) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 18, 2024.

Round-trip from

$207
(United Airlines)

One-way from

$108
(United Airlines)
From Illinois to San Francisco
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One-way flight from Illinois to San Francisco
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Find flight deals from Illinois to San Francisco

Cheapest flights from Illinois to San Francisco
Explore the most affordable flight options available from Illinois to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 18, 2024.

This CheapOair deal was found by Cheapflights users on 12/16. 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.
lun. 12/239:29 pmSTL - SFO
1 stop12h 23mFrontier
jue. 1/26:00 amSFO - STL
1 stop24h 13mFrontier
Deal found 12/16$218
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
lun. 12/2310:04 pmMDW - SFO
1 stop28h 17mFrontier
jue. 1/910:29 pmSFO - MDW
1 stop11h 19mFrontier
Deal found 12/16$271
This Kiwi.com deal was found by Cheapflights users on 12/17. 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.
mar. 12/316:55 amORD - SFO
1 stop27h 04mFrontier
jue. 1/911:49 amSFO - ORD
1 stop10h 00mFrontier
Deal found 12/17$271
This Mytrip deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/2410:00 amORD - SFO
1 stop9h 07mMultiple Airlines
jue. 1/93:05 pmSFO - ORD
1 stop26h 20mMultiple Airlines
Deal found 12/17$287
This American Airlines deal was found by Cheapflights users on 12/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/216:30 amSTL - SFO
1 stop6h 42mAmerican Airlines
mar. 1/2111:59 pmSFO - STL
1 stop8h 49mAmerican Airlines
Deal found 12/17$307
This United Airlines deal was found by Cheapflights users on 12/17. 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.
mié. 12/257:10 amORD - SFO
1 stop6h 51mUnited Airlines
jue. 1/94:55 pmSFO - ORD
Nonstop4h 24mUnited Airlines
Deal found 12/17$364
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/243:29 pmSTL - SFO
1 stop7h 45mDelta
lun. 12/3012:10 amSFO - STL
1 stop8h 56mDelta
Deal found 12/17$368
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/243:18 pmORD - SFO
1 stop7h 56mDelta
mar. 1/710:45 pmSFO - ORD
1 stop8h 31mDelta
Deal found 12/16$377
This Delta deal was found by Cheapflights users on 12/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/235:58 amMLI - SFO
1 stop8h 57mDelta
mié. 1/16:00 amSFO - MLI
1 stop8h 18mDelta
Deal found 12/16$378
This United Airlines deal was found by Cheapflights users on 12/17. 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.
vie. 12/208:50 amSTL - SFO
Nonstop4h 47mUnited Airlines
jue. 1/26:35 pmSFO - STL
Nonstop3h 53mUnited Airlines
Deal found 12/17$383
This Sun Country Air deal was found by Cheapflights users on 12/17. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/2510:00 amORD - SFO
1 stop14h 51mSun Country Air
lun. 12/3011:59 pmSFO - ORD
1 stop15h 39mSun Country Air
Deal found 12/17$385
This Delta deal was found by Cheapflights users on 12/17. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/249:30 amMDW - SFO
1 stop7h 18mDelta
mar. 12/3112:10 amSFO - MDW
1 stop8h 58mDelta
Deal found 12/17$387

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 2,558,603 searches. Data last updated diciembre 18, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

sáb. 1/18

6:22 pm-9:21 pm

Nonstop4h 59m

San Francisco

lun. 1/20

11:59 pm-6:18 am

Nonstop4h 19m

$207

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

dom. 1/19

7:15 am-12:44 pm

1 stop7h 29m

San Francisco

sáb. 1/25

10:29 pm-11:44 am

1 stop11h 15m

$208

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

jue. 1/9

8:30 am-11:24 am

Nonstop4h 54m

San Francisco

mié. 1/15

5:20 am-11:36 am

Nonstop4h 16m

$208

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

mar. 2/4

7:45 am-1:47 pm

1 stop8h 02m

San Francisco

jue. 2/6

11:33 am-11:44 pm

1 stop10h 11m

$209

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

jue. 1/16

4:41 pm-7:50 pm

2 stops29h 09m

San Francisco

jue. 1/23

10:29 pm-7:28 pm

1 stop18h 59m

$210

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

vie. 1/31

6:55 pm-9:54 pm

Nonstop4h 59m

San Francisco

jue. 2/6

1:40 pm-7:59 pm

Nonstop4h 19m

$214

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

vie. 2/14

6:59 pm-12:43 am

1 stop7h 44m

San Francisco

mar. 2/18

7:46 pm-9:16 am

1 stop11h 30m

$214

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

sáb. 1/25

7:00 am-9:45 am

Nonstop4h 45m

San Francisco

vie. 1/31

12:10 pm-6:09 pm

Nonstop3h 59m

$227

St. LouisSan Francisco

STL - SFO

STLSFO

Lambert-St Louis

vie. 2/7

7:15 am-12:30 pm

1 stop7h 15m

San Francisco

sáb. 2/8

12:27 am-1:21 pm

1 stop10h 54m

$246

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

sáb. 1/11

5:05 pm-11:22 pm

1 stop8h 17m

San Francisco

mar. 1/14

6:00 am-4:21 pm

1 stop8h 21m

$256

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/18

Showing 1-10 of 55 results
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Best time to book a flight from Illinois to San Francisco

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

Travel insights for flights from Illinois to San Francisco

Get recent, data-driven insights about flights from Illinois to San Francisco including ideal travel times, pricing trends, and more.

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

Currently, January is the cheapest month in which you can book a flight from Illinois to San Francisco (average of $276). Flying from Illinois to San Francisco in June is currently the most expensive (average of $381). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from IL to SFO?

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 diciembre 18, 2024.

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.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 diciembre 18, 2024.
See what other customers who have flown with American Airlines, Alaska Airlines and Delta 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
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Southwest
8.1
Very good
4,848 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Alaska Airlines
8.0
Very good
9,554 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

Delta
8.0
Very good
8,604 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

United Airlines
7.4
Good
9,055 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,848 reviews

Crew

8.7

Entertainment

7.7

Overall

8.1

Comfort

8.1

Boarding

8.2

Food

7.2

Reviews

1 / 10

Flight was delayed by one hour and 40 minutes. Also baggage was delivered late at Boston. This delay made me miss my connection from Boston to Hyderabad

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.

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

    The cheapest airline one-way is United Airlines, with whom users have recently found tickets for as low as $108. However, be on the lookout for offers from Southwest and Alaska 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 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: Air China (100%), ANA (97%), United Airlines (83%).

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

    While on average a flight from Illinois to San Francisco is generally $929, our data shows the cheapest flight currently is $118. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay $173 for that flight.

  • 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.

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

    Currently, January is the cheapest month in which you can book a flight from Illinois to San Francisco (average of $276). Flying from Illinois to San Francisco in June is currently the most expensive (average of $381). 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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Alternative routes for Illinois to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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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 2,558,603 searches. Data last updated diciembre 18, 2024.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$93Average$223FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$148Average$303FlexibilityNo cancel feeOn-time75%
DeltaCheapest$174Average$393FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$178Average$444FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$179Average$450FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$247Average$434FlexibilityNo cancel feeOn-time63%
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