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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $165

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 28/2. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
24 Feb — 3 Mar1
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 25 January 2026.

Tue 17/223:59
SFO
-
ORD
Nonstop4h 20m
United Airlines
Thu 19/217:00
ORD
-
SFO
Nonstop5h 00m
United Airlines
Deal found 23/1$362
Tue 14/406:35
SFO
-
ORD
1 stop10h 05m
Alaska Airlines
Fri 17/416:10
ORD
-
SFO
1 stop8h 42m
Alaska Airlines
Deal found 23/1$365
Thu 23/409:00
SFO
-
ORD
1 stop8h 52m
Alaska Airlines
Tue 28/408:50
ORD
-
SFO
1 stop16h 58m
Alaska Airlines
Deal found 23/1$367
Sat 14/222:45
SFO
-
ORD
1 stop8h 56m
Delta
Wed 18/207:40
ORD
-
SFO
2 stops12h 16m
Delta
Deal found 22/1$370
Sat 28/214:39
SFO
-
ORD
1 stop7h 13m
Delta
Mon 2/314:20
ORD
-
SFO
1 stop10h 21m
Delta
Deal found 23/1$377
Tue 31/322:40
SFO
-
ORD
1 stop8h 30m
Delta
Sun 5/407:10
ORD
-
SFO
1 stop9h 32m
Delta
Deal found 22/1$380
Fri 13/314:20
SFO
-
ORD
1 stop7h 34m
Delta
Wed 18/307:10
ORD
-
SFO
1 stop9h 32m
Delta
Deal found 25/1$383
Mon 16/223:59
SFO
-
ORD
Nonstop4h 20m
United Airlines
Sat 21/206:25
ORD
-
SFO
Nonstop5h 02m
United Airlines
Deal found 24/1$384
Sat 28/322:55
SFO
-
ORD
1 stop11h 55m
Southwest
Sat 4/414:40
ORD
-
SFO
1 stop7h 35m
Southwest
Deal found 24/1$387
Sat 21/305:50
SFO
-
ORD
1 stop8h 28m
Delta
Tue 24/307:10
ORD
-
SFO
1 stop9h 32m
Delta
Deal found 24/1$388
Thu 19/214:39
SFO
-
ORD
1 stop7h 13m
Delta
Wed 25/214:20
ORD
-
SFO
2 stops10h 44m
Delta
Deal found 23/1$390
Fri 27/200:40
SFO
-
ORD
1 stop7h 45m
Delta
Sun 1/317:37
ORD
-
SFO
1 stop7h 48m
Delta
Deal found 24/1$391

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 25 January 2026.

Round-trip from

$362

One-way from

$165

Popular in

November

Cheapest in

September

Average price

$561
United Airlines
  • United Airlines
  • 17/2-20/2
  • Nonstop
  • 9h 23m total
  • San Francisco to Chicago
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Southwest
  • Southwest
  • 28/2
  • 1 total stop
  • 6h 05m total
  • San Francisco to Chicago
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($144 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($18 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 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 25 January 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

San Francisco

Fly to

O'Hare Intl

Route

Depart

Return

Price

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 25/4

05:45-14:20

1 stop6h 35m

Chicago O'Hare Intl

Sat 2/5

06:15-17:25

2 stops13h 10m

$370

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 27/2

00:40-11:45

1 stop9h 05m

Chicago O'Hare Intl

Thu 5/3

14:20-22:41

1 stop10h 21m

$377

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 28/2

05:45-16:41

1 stop8h 56m

Chicago O'Hare Intl

Mon 2/3

07:40-13:48

1 stop8h 08m

$377

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 7/4

14:55-00:40

1 stop7h 45m

Chicago O'Hare Intl

Fri 10/4

07:10-14:42

1 stop9h 32m

$380

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 21/3

05:50-16:18

1 stop8h 28m

Chicago O'Hare Intl

Tue 24/3

07:10-14:42

1 stop9h 32m

$388

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 14/3

09:46-23:51

2 stops12h 05m

Chicago O'Hare Intl

Tue 17/3

11:10-19:19

1 stop10h 09m

$399

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 24/2

09:55-23:52

2 stops11h 57m

Chicago O'Hare Intl

Sat 28/2

06:15-13:48

1 stop9h 33m

$399

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 1/4

00:45-07:07

Nonstop4h 22m

Chicago O'Hare Intl

Sun 5/4

21:20-00:19

Nonstop4h 59m

$410

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 30/3

05:50-16:43

1 stop8h 53m

Chicago O'Hare Intl

Sun 5/4

07:10-14:42

1 stop9h 32m

$416

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 16/2

05:45-16:41

1 stop8h 56m

Chicago O'Hare Intl

Fri 20/2

17:37-23:25

1 stop7h 48m

$416

Flights are sorted by cheapest return flights first.

Deals found on 24/1

Showing 1-10 of 24 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 23 January 2026.

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, October is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $181). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $372). 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 25 January 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.

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 44 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 6h 35m. 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: Qatar Airways (97%), Gulf Air (97%), Iberia( 93%).

  • 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, October is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $181). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $372). 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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