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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $167

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
13 Nov — 20 Nov1
1 adult
1 adult, Economy

Cheap flight deals from San Francisco to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to O'Hare Intl (ORD). 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 14 October 2025.

Round-trip from

$373

One-way from

$167

Popular in

November

Cheapest in

January

Average price

$641
Alaska Airlines
  • Alaska Airlines
  • 13/12-15/12
  • 2 total stops
  • 30h 40m total
  • San Francisco to Chicago
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Alaska Airlines
  • Alaska Airlines
  • 9/12
  • 1 total stop
  • 7h 00m total
  • San Francisco to Chicago
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Highest demand for flights based on searches. 17% potential increase in price ($177 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average return price).
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Average for round-trip flights in October 2025
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Find flight deals from San Francisco to O'Hare Intl

Enter your travel dates to find the best prices.

Cheapest flights from San Francisco to O'Hare Intl
Explore the most affordable flight options available from San Francisco to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 14 October 2025.

Sun 7/1207:00SFO - ORD
1 stop10h 54mAlaska Airlines
Thu 11/1208:55ORD - SFO
1 stop16h 53mAlaska Airlines
Deal found 13/10$373
Wed 3/1208:09SFO - ORD
1 stop13h 41mAlaska Airlines
Tue 9/1208:55ORD - SFO
2 stops10h 29mAlaska Airlines
Deal found 12/10$374
Wed 5/1109:51SFO - ORD
2 stops12h 08mAlaska Airlines
Wed 12/1109:20ORD - SFO
1 stop14h 41mAlaska Airlines
Deal found 13/10$379
Fri 5/1220:31SFO - ORD
1 stop18h 24mAlaska Airlines
Tue 9/1215:05ORD - SFO
1 stop19h 01mAlaska Airlines
Deal found 13/10$384
Tue 11/1107:00SFO - ORD
1 stop14h 59mAlaska Airlines
Thu 13/1114:54ORD - SFO
1 stop9h 07mAlaska Airlines
Deal found 13/10$385
Wed 22/1006:34SFO - ORD
1 stop15h 19mFrontier
Tue 28/1007:14ORD - SFO
1 stop17h 13mFrontier
Deal found 13/10$390
Wed 5/1109:51SFO - ORD
2 stops12h 08mAlaska Airlines
Sat 8/1114:54ORD - SFO
1 stop9h 01mAlaska Airlines
Deal found 13/10$394
Mon 24/1107:00SFO - ORD
1 stop14h 32mAlaska Airlines
Tue 2/1220:59ORD - SFO
1 stop13h 07mAlaska Airlines
Deal found 13/10$396
Thu 30/1000:35SFO - ORD
1 stop6h 28mDelta
Tue 4/1118:05ORD - SFO
1 stop7h 28mDelta
Deal found 14/10$399
Fri 12/1207:00SFO - ORD
1 stop10h 54mAlaska Airlines
Sun 14/1220:59ORD - SFO
1 stop13h 07mAlaska Airlines
Deal found 14/10$402

Cheapflights Fare Finder

 
Customise your flight search to find flights from San Francisco to O'Hare Intl 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 647,157 searches. Data last updated 14 October 2025.
Use the filters below to find and compare flights from San Francisco to Chicago O'Hare Intl Airport that are best for you.

Fly from

San Francisco

Fly to

O'Hare Intl

Route

Depart

Return

Price

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 13/12

18:13-10:51

1 stop14h 38m

Chicago O'Hare Intl

Mon 22/12

10:51-22:54

1 stop14h 03m

$417

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 25/11

07:00-23:32

1 stop14h 32m

Chicago O'Hare Intl

Fri 5/12

20:59-08:06

1 stop13h 07m

$434

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 11/12

10:30-21:21

2 stops8h 51m

Chicago O'Hare Intl

Mon 15/12

07:50-15:57

1 stop10h 07m

$442

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 5/12

05:50-17:15

1 stop9h 25m

Chicago O'Hare Intl

Tue 9/12

07:50-16:10

2 stops10h 20m

$442

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 11/11

00:30-08:30

1 stop6h 00m

Chicago O'Hare Intl

Wed 19/11

14:12-22:25

1 stop10h 13m

$446

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 13/12

18:13-10:51

1 stop14h 38m

Chicago O'Hare Intl

Sat 20/12

17:50-12:47

1 stop20h 57m

$448

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 19/11

00:30-08:30

1 stop6h 00m

Chicago O'Hare Intl

Wed 3/12

07:50-15:57

1 stop10h 07m

$449

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 16/12

07:00-23:50

1 stop14h 50m

Chicago O'Hare Intl

Mon 22/12

20:58-08:15

1 stop13h 17m

$456

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 15/12

13:30-19:44

Nonstop4h 14m

Chicago O'Hare Intl

Wed 17/12

06:55-09:40

Nonstop4h 45m

$462

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 3/11

16:50-23:10

Nonstop4h 20m

Chicago O'Hare Intl

Sat 8/11

14:35-17:28

Nonstop4h 53m

$462

Flights are sorted by cheapest return flights first.

Deals found on 12/10

Showing 1-10 of 23 results
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Best time to book a flight from San Francisco to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from San Francisco with our price prediction graph.
Estimated return 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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Chicago O'Hare Intl Airport

How far ahead should I book a flight from San Francisco to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a return flight from San Francisco to O'Hare Intl. Price data was last updated on 10 October 2025.

The price you pay for your flight from San Francisco to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 67 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from San Francisco to Chicago O'Hare Intl Airport?

Currently, December is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $169). Flying from San Francisco to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $298). 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 SFO to ORD?

Find hourly flight availability from San Francisco to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 14 October 2025.

It’s typically best to fly out from San Francisco to Chicago O'Hare Intl Airport in the afternoon. Doing so could potentially save you 30% on the flight price compared to flying at midday, which is usually more expensive.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to O'Hare Intl. 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 Chicago O'Hare Intl?

    San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to Chicago O'Hare Intl. You should not have trouble finding flights to Chicago O'Hare Intl from San Francisco; the airport handles an average of 82 outbound flights to Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to Chicago O'Hare Intl. It is only a 19.0 km journey to San Francisco (SFO) from San Francisco’s city centre.

  • How long is the flight from San Francisco to Chicago O'Hare Intl Airport?

    Departing from San Francisco to Chicago O'Hare Intl Airport will take you 9h 08m. There are 2963 km between San Francisco and Chicago O'Hare Intl Airport. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the most reliable airlines from San Francisco to Chicago O'Hare Intl Airport?

    Before booking your flight to Chicago O'Hare Intl Airport from San Francisco, have a look at the most reliable airlines to get you to your destination on time: China Southern (100%), ITA Airways (90%), Air Canada( 85%).

  • Can I find deals for flights from San Francisco to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on San Francisco to O'Hare Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco to O'Hare Intl?

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

  • Can I find deals for business class flights from San Francisco to O'Hare Intl?

    Yes. Cheapflights offers flight deals from San Francisco to O'Hare Intl 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 San Francisco to Chicago O'Hare Intl Airport?

    Currently, December is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $169). Flying from San Francisco to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $298). 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.

See more FAQs

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Alternative routes for San Francisco to O'Hare Intl

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Los Angeles to O'Hare Intl flights

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How does Cheapflights help users find flights from San Francisco to O'Hare Intl?

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Why should you use Cheapflights to find cheap flight tickets from San Francisco to O'Hare Intl?

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Can Cheapflights find flights from San Francisco to O'Hare Intl with no change fees?

Yes! Cheapflights helps users easily find flights from San Francisco to O'Hare Intl with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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