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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $190

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
17 Jan — 24 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap 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 18 December 2025.

Thu 25/1205:30SFO - ORD
1 stop7h 55mSouthwest
Fri 9/116:25ORD - SFO
1 stop7h 25mSouthwest
Deal found 17/12$543
Thu 25/1213:35SFO - ORD
Nonstop4h 30mUnited Airlines
Fri 2/107:05ORD - SFO
Nonstop4h 53mUnited Airlines
Deal found 17/12$570
Thu 25/1207:00SFO - ORD
Nonstop4h 26mUnited Airlines
Wed 31/1218:25ORD - SFO
Nonstop5h 04mUnited Airlines
Deal found 17/12$580
Wed 31/1205:00SFO - ORD
Nonstop4h 25mUnited Airlines
Fri 2/107:05ORD - SFO
Nonstop4h 53mUnited Airlines
Deal found 17/12$594
Thu 25/1218:50SFO - ORD
Nonstop4h 19mUnited Airlines
Sun 4/106:15ORD - SFO
Nonstop4h 57mUnited Airlines
Deal found 15/12$602
Tue 23/1214:05SFO - ORD
1 stop7h 57mDelta
Mon 26/107:30ORD - SFO
1 stop8h 13mDelta
Deal found 16/12$609
Wed 24/1223:35SFO - ORD
Nonstop4h 23mUnited Airlines
Mon 5/119:45ORD - SFO
Nonstop5h 10mUnited Airlines
Deal found 16/12$645
Thu 25/1216:55SFO - ORD
Nonstop4h 19mUnited Airlines
Tue 30/1222:10ORD - SFO
Nonstop5h 04mUnited Airlines
Deal found 18/12$653
Wed 31/1205:30SFO - ORD
1 stop7h 55mSouthwest
Sat 3/118:15ORD - SFO
1 stop8h 00mSouthwest
Deal found 16/12$667
Wed 31/1223:35SFO - ORD
Nonstop4h 23mUnited Airlines
Sat 3/107:05ORD - SFO
Nonstop4h 53mUnited Airlines
Deal found 16/12$668

Find 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 18 December 2025.

Round-trip from

$399

One-way from

$190

Popular in

December

Cheapest in

January

Average price

$730
Alaska Airlines
  • Alaska Airlines
  • 31/1-3/2
  • 3 total stops
  • 20h 53m total
  • San Francisco to Chicago
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United Airlines
  • United Airlines
  • 7/1
  • Nonstop
  • 4h 29m total
  • San Francisco to Chicago
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($101 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($24 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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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 18 December 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

Tue 17/3

11:34-23:56

1 stop10h 22m

Chicago O'Hare Intl

Tue 24/3

14:05-19:19

1 stop7h 14m

$402

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 24/2

08:11-23:59

1 stop13h 48m

Chicago O'Hare Intl

Wed 25/2

15:07-08:46

2 stops19h 39m

$405

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 30/1

07:57-23:50

2 stops13h 53m

Chicago O'Hare Intl

Tue 3/2

15:44-22:47

1 stop9h 03m

$411

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 7/1

22:54-09:41

1 stop8h 47m

Chicago O'Hare Intl

Sun 11/1

13:50-23:28

2 stops11h 38m

$416

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 20/2

06:05-21:52

2 stops13h 47m

Chicago O'Hare Intl

Sat 21/2

08:52-13:48

1 stop6h 56m

$416

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 12/1

00:40-08:40

1 stop6h 00m

Chicago O'Hare Intl

Tue 20/1

14:20-22:54

2 stops10h 34m

$416

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 20/2

17:03-23:26

Nonstop4h 23m

Chicago O'Hare Intl

Sun 22/2

06:25-09:30

Nonstop5h 05m

$422

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sun 1/2

23:56-06:25

Nonstop4h 29m

Chicago O'Hare Intl

Thu 5/2

16:16-19:09

Nonstop4h 53m

$422

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 5/3

23:59-06:19

Nonstop4h 20m

Chicago O'Hare Intl

Mon 9/3

21:15-00:16

Nonstop5h 01m

$422

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 23/1

07:57-23:50

2 stops13h 53m

Chicago O'Hare Intl

Sat 24/1

15:44-22:47

1 stop9h 03m

$422

Flights are sorted by cheapest return flights first.

Deals found on 17/12

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 12 December 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 $162). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $388). 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 18 December 2025.

It’s typically best to fly out from San Francisco to Chicago O'Hare Intl Airport at midday. Doing so could potentially save you 35% on the flight price compared to flying in the morning, 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 19 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 8h 47m. 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: Fiji Airways (100%), Royal Jordanian (92%), China Southern( 91%).

  • 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 $162). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $388). 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

Fly with Cheapflights

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

Cheapflights helps you search for flights from San Francisco to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

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

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from San Francisco to O'Hare Intl for you. Better yet — we are completely free to use.

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.

Can Cheapflights notify me if prices for flights from San Francisco to O'Hare Intl become cheaper?

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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