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Cheap flights from Illinois (IL) to San Francisco (SFO)

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How to find the cheapest flight from
Illinois to San Francisco (SFO)

How far in advance should I book a flight from Illinois to San Francisco?

When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 35 days in advance, which can save you up to 7% on flights from Illinois to San Francisco compared to booking the week you need them. Waiting 35 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $99. For sooner than that we have options available in the next 3 days from $105.

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

August can be a great time to fly to San Francisco from Illinois with a flight ticket averaging about $108. Cheapflights users have found deals in the month of August for as cheap as $48. The most expensive prices can be found in the month of June.

Cheap flights from Illinois to San Francisco in January, February 2021

The best prices found for Illinois to SFO flights for January, February
14 Feb - 18 Feb
$85pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
18 Feb - 21 Feb
$88pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
18 Feb - 19 Feb
$97pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl

Illinois to San Francisco 2021 flight deals

Cheap flights to San Francisco from Illinois found for this year
14 Feb - 18 Feb
$85pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
18 Feb - 21 Feb
$88pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
18 Feb - 19 Feb
$97pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl

Non-stop flights to San Francisco from Illinois

Save time with Illinois to San Francisco direct flight deals
4 May - 8 May
$154pp
ORD
Chicago O'Hare Intl
Alaska Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
ORD
Chicago O'Hare Intl
27 Mar - 2 Apr
$155pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
United Airlines
Non-Stop
ORD
Chicago O'Hare Intl
16 Mar - 21 Apr
$156pp
ORD
Chicago O'Hare Intl
Multiple Airlines
Non-Stop
SFO
San Francisco
SFO
San Francisco
Alaska Airlines
Non-Stop
ORD
Chicago O'Hare Intl

Last minute flights from Illinois to San Francisco

Late deals on round-trip flights to San Francisco from Illinois, departing today and this week
28 Jan - 1 Feb
$116pp
ORD
Chicago O'Hare Intl
Multiple Airlines
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
24 Jan - 4 Feb
$117pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl
27 Jan - 1 Feb
$118pp
ORD
Chicago O'Hare Intl
Frontier
 
1 STOP
SFO
San Francisco
SFO
San Francisco
Frontier
 
1 STOP
ORD
Chicago O'Hare Intl

One-way flights to San Francisco from Illinois

The cheapest one-way flights from Illinois to San Francisco
3:20 am - 6:09 am
Alaska Airlines
Nonstop
4h 49m
ORD - SFO
Alaska Airlines
1:10 am - 5:07 am
Multiple Airlines
2 Stops
29h 57m
ORD - SFO
Multiple Airlines
$83
Gotogate
3:30 am - 3:43 am
Frontier
2 Stops
26h 13m
ORD - SFO
Frontier
$85
Kiwi.com

Related info for your journey

Useful info, stats and facts about Illinois to San Francisco flights.

Flight FAQs

From Illinois to San Francisco

Are flight prices decreasing from Illinois to San Francisco due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Illinois and San Francisco for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Illinois to San Francisco to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Alaska Airlines and Delta are some airlines that have done so. Some of the new policies that have been implemented to accommodate travelers flying from Illinois to San Francisco are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

Which airlines flying from Illinois to San Francisco have flexible cancellations due to COVID-19?

United Airlines, American Airlines, and Alaska Airlines are some of the carriers that may have flexible cancellation policies. You can use our site to filter for other airlines that may also have this kind of flexibility.

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

Yes, there are multiple flights from Illinois to San Francisco for under $100. The cheapest flight booked recently is on Frontier for just $85, but on average you can expect to pay $109.

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 $168.

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 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: Major Airline, American Airlines or Alaska Airlines.

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 Springfield Capital - San Francisco.

What are the cheapest Flights from Illinois to San Francisco?

On average you can expect to pay $605 for a flight from Illinois to San Francisco. The cheapest flight overall is $119 while the most popular route, (Chicago O'Hare Intl - San Francisco) is currently priced at $116.

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

The top 3 most reliable airlines when flying from Illinois to San Francisco are LOT (100%), ANA (100%) and SAS (97%).

How long is the flight from Illinois to San Francisco?

For as low as $339, United Airlines can have you in San Francisco from Illinois in 6h 39m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

What is the cheapest airline to fly from Illinois to San Francisco round-trip?

According to our current data, Frontier ($85), offers the cheapest pricing from Illinois to San Francisco.

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

To fly one-way, consider booking your trip with Frontier, which is currently one of the cheapest options available, starting at $44. Frontier is not the only option available. At the moment, Alaska Airlines is another option, for $79.

Arrival points for flights from Illinois to San Francisco

Destination information for San Francisco

Things to know before you go. Useful info for your trip from Illinois to San Francisco
Average temperature for January in San Francisco
59.0 °F
Avg rainfall for January in San Francisco
2.2 ″

Airports servicing

Bloomington (BMI)
Champaign (CMI)
Decatur (DEC)
Moline (MLI)
Marion (MWA)

Airports servicing San Francisco

Top 7 airlines flying from Illinois to San Francisco

The chart below displays the airlines Cheapflights users traveling from Illinois to San Francisco choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.

Airline Cheapest Average Flexibility On-time COVID-19 safety
Spirit Airlines
$103 $236 No cancel fee 65%
Frontier
$102 $251 No cancel fee 62%
Alaska Airlines
$118 $257 No cancel fee 75%
Sun Country Air
$131 $293 No cancel fee 83%
Delta
$127 $372 No cancel fee N/A
United Airlines
$138 $411 No cancel fee 69%
American Airlines
$128 $423 No cancel fee 71%
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