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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $225

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
23 Aug — 30 Aug1
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 24 July 2026.

Sat 21/1117:10
SFO
-
ORD
Nonstop4h 17m
United Airlines
Mon 23/1121:40
ORD
-
SFO
Nonstop4h 56m
United Airlines
Deal found 22/7$416
Sun 6/910:32
SFO
-
ORD
1 stop6h 49m
Alaska Airlines
Thu 17/907:20
ORD
-
SFO
1 stop7h 40m
Alaska Airlines
Deal found 23/7$418
Fri 6/1115:20
SFO
-
ORD
Nonstop4h 11m
United Airlines
Mon 9/1106:00
ORD
-
SFO
Nonstop4h 44m
United Airlines
Deal found 21/7$422
Wed 9/1213:35
SFO
-
ORD
1 stop6h 18m
Delta
Mon 14/1218:00
ORD
-
SFO
1 stop7h 41m
Delta
Deal found 21/7$428
Fri 14/807:55
SFO
-
ORD
1 stop9h 02m
Alaska Airlines
Mon 24/814:18
ORD
-
SFO
1 stop9h 24m
Alaska Airlines
Deal found 23/7$429
Wed 12/805:00
SFO
-
ORD
Nonstop4h 25m
United Airlines
Mon 17/822:00
ORD
-
SFO
Nonstop4h 50m
United Airlines
Deal found 22/7$431
Tue 6/1007:03
SFO
-
ORD
1 stop9h 50m
Alaska Airlines
Wed 7/1014:21
ORD
-
SFO
1 stop8h 12m
Alaska Airlines
Deal found 21/7$432
Wed 7/1000:35
SFO
-
ORD
Nonstop4h 21m
United Airlines
Tue 13/1021:40
ORD
-
SFO
Nonstop4h 50m
United Airlines
Deal found 24/7$434
Fri 4/915:10
SFO
-
ORD
Nonstop4h 24m
United Airlines
Sun 6/908:40
ORD
-
SFO
Nonstop4h 40m
United Airlines
Deal found 22/7$436
Tue 24/1106:05
SFO
-
ORD
1 stop9h 09m
Delta
Thu 26/1107:05
ORD
-
SFO
1 stop9h 22m
Delta
Deal found 20/7$438
Mon 17/814:00
SFO
-
ORD
1 stop7h 29m
Delta
Mon 24/814:36
ORD
-
SFO
1 stop6h 54m
Delta
Deal found 23/7$441
Wed 7/1016:59
SFO
-
ORD
2 stops13h 04m
Delta
Wed 14/1019:30
ORD
-
SFO
1 stop6h 26m
Delta
Deal found 23/7$444

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 24 July 2026.

Round-trip from

$416

One-way from

$225

Popular in

June

Cheapest in

September

Average price

$681
United Airlines
  • United Airlines
  • 21/11-23/11
  • Nonstop
  • 9h 13m total
  • San Francisco to Chicago
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American Airlines
  • American Airlines
  • 9/9
  • Nonstop
  • 4h 52m total
  • San Francisco to Chicago
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($90 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($17 potential savings vs. average return price).
Search Deals
Average for round-trip flights in July 2026
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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 24 July 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest return flight

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 6/10

07:03-18:53

1 stop9h 50m

Chicago O'Hare Intl

Wed 7/10

14:21-20:33

1 stop8h 12m

$434

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 27/8

23:30-05:59

Nonstop4h 29m

Chicago O'Hare Intl

Sun 30/8

06:00-08:38

Nonstop4h 38m

$455

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 26/8

00:35-06:56

Nonstop4h 21m

Chicago O'Hare Intl

Sat 5/9

12:51-15:35

Nonstop4h 44m

$482

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 23/9

23:00-05:28

Nonstop4h 28m

Chicago O'Hare Intl

Mon 28/9

06:07-08:45

Nonstop4h 38m

$482

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 8/8

00:50-07:16

Nonstop4h 26m

Chicago O'Hare Intl

Thu 13/8

08:40-11:25

Nonstop4h 45m

$484

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 16/11

05:00-11:24

Nonstop4h 24m

Chicago O'Hare Intl

Wed 18/11

13:25-16:15

Nonstop4h 50m

$519

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 2/9

10:32-19:21

1 stop6h 49m

Chicago O'Hare Intl

Mon 7/9

14:18-10:53

1 stop22h 35m

$559
Fastest return journey

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 31/8

18:38-00:59

Nonstop4h 21m

Chicago O'Hare Intl

Mon 7/9

06:00-08:38

Nonstop4h 38m

$670

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 12/8

13:54-20:26

Nonstop4h 32m

Chicago O'Hare Intl

Sun 16/8

07:40-10:26

Nonstop4h 46m

$694

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 4/9

16:30-22:59

Nonstop4h 29m

Chicago O'Hare Intl

Mon 7/9

07:40-10:26

Nonstop4h 46m

$718

Flights are sorted by cheapest return flights first.

Deals found on 22/7

Showing 1-10 of 22 resultsSorted by cheapest first
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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?

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 66 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, September is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $479). Flying from San Francisco to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $727). 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 24 July 2026.

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 59% on the flight price compared to flying at midday, which is usually more expensive.

How much does it cost for a return flight from San Francisco to Chicago O'Hare Intl Airport?

Airfare is below average for this route at the moment.

San Francisco to Chicago O'Hare Intl Airport flights typically cost between $478 and $780 in November.
The cheapest return price found within the last 5 days was $416 on United Airlines (21 Nov–23 Nov).

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 76 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 17.7 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 4h 29m. 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: ITA Airways (93%), Austrian Airlines (81%), Brussels Airlines( 80%).

  • 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, September is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $479). Flying from San Francisco to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $727). 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

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to O'Hare Intl flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

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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