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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from £95

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
6 dic — 13 dic1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from San Francisco to Chicago O'Hare Intl are usually found in January or April, booked 67 days in advance, depart on a Wednesday or Friday and return on a Wednesday

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 6 novembre 2025.

Round-trip from

£221

One-way from

£95

Popular in

November

Cheapest in

January

Average price

£366

Good one-way deal

£124 or less
Delta
  • Delta
  • 9/12-16/12
  • 3 total stops
  • 25h 00m total
  • San Francisco to Chicago
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Alaska Airlines
  • Alaska Airlines
  • 9/12
  • 2 total stops
  • 10h 15m total
  • San Francisco to Chicago
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Highest demand for flights based on searches. 18% potential increase in price (£49 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£7 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Price to beat on a one-way flight from San Francisco to Chicago O'Hare Intl.
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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 6 novembre 2025.

mar 9/1210:30SFO - ORD
1 stop11h 29mDelta
mar 16/1211:00ORD - SFO
2 stops13h 31mDelta
Deal found 4/11£221
lun 24/1106:00SFO - ORD
1 stop9h 18mDelta
mer 3/1207:50ORD - SFO
1 stop16h 41mDelta
Deal found 4/11£222
lun 8/1200:30SFO - ORD
1 stop6h 10mDelta
dom 14/1214:14ORD - SFO
1 stop10h 17mDelta
Deal found 4/11£223
ven 12/1208:09SFO - ORD
1 stop13h 41mAlaska Airlines
dom 14/1208:55ORD - SFO
1 stop14h 51mAlaska Airlines
Deal found 4/11£224
ven 5/1208:09SFO - ORD
1 stop13h 41mAlaska Airlines
lun 8/1220:59ORD - SFO
1 stop13h 07mAlaska Airlines
Deal found 4/11£225
mar 2/1210:30SFO - ORD
2 stops8h 51mDelta
mer 3/1207:50ORD - SFO
2 stops10h 22mDelta
Deal found 5/11£226
gio 27/1106:00SFO - ORD
1 stop9h 21mDelta
mer 3/1207:50ORD - SFO
2 stops10h 22mDelta
Deal found 5/11£226
gio 11/1211:40SFO - ORD
1 stop6h 55mDelta
dom 14/1206:00ORD - SFO
2 stops11h 57mDelta
Deal found 4/11£227
gio 11/1213:58SFO - ORD
1 stop8h 01mDelta
mer 17/1207:20ORD - SFO
2 stops10h 37mDelta
Deal found 4/11£229
ven 5/1200:30SFO - ORD
1 stop9h 13mDelta
mar 9/1215:50ORD - SFO
1 stop6h 38mDelta
Deal found 3/11£229
mer 31/1200:10SFO - ORD
1 stop7h 15mDelta
sab 31/107:30ORD - SFO
1 stop8h 13mDelta
Deal found 3/11£230
ven 5/1200:30SFO - ORD
1 stop8h 03mDelta
lun 8/1214:14ORD - SFO
1 stop10h 17mDelta
Deal found 4/11£231

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 858,174 searches. Data last updated 6 novembre 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

gio 11/12

14:50-21:07

Nonstop4h 17m

Chicago O'Hare Intl

lun 15/12

18:35-21:29

Nonstop4h 54m

£232

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

gio 29/1

10:30-21:52

2 stops9h 22m

Chicago O'Hare Intl

lun 9/2

07:30-16:10

2 stops10h 40m

£233

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

lun 8/12

10:30-21:21

2 stops8h 51m

Chicago O'Hare Intl

sab 13/12

07:50-16:12

2 stops10h 22m

£241

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

dom 7/12

00:30-08:40

1 stop6h 10m

Chicago O'Hare Intl

ven 12/12

06:00-15:57

2 stops11h 57m

£244

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

gio 15/1

00:47-08:40

1 stop5h 53m

Chicago O'Hare Intl

lun 19/1

07:30-13:43

1 stop8h 13m

£265

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

dom 4/1

00:47-08:40

1 stop5h 53m

Chicago O'Hare Intl

mar 6/1

08:50-13:47

1 stop6h 57m

£268

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mar 23/12

19:20-05:03

1 stop7h 43m

Chicago O'Hare Intl

gio 1/1

08:39-00:27

1 stop17h 48m

£276

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

gio 18/12

10:46-23:59

2 stops11h 13m

Chicago O'Hare Intl

lun 22/12

15:33-23:54

1 stop10h 21m

£278

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

gio 4/12

10:30-22:35

2 stops10h 05m

Chicago O'Hare Intl

gio 11/12

14:15-21:50

2 stops9h 35m

£281

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

sab 13/12

15:33-06:21

2 stops12h 48m

Chicago O'Hare Intl

gio 1/1

08:39-00:27

1 stop17h 48m

£282

Flights are sorted by cheapest return flights first.

Deals found on 5/11

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 31 October 2025.

The best time to book flights from San Francisco to Chicago O'Hare Intl Airport is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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 £85). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of £156). 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 6 novembre 2025.

When flying from San Francisco to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Chicago O'Hare Intl. On average, San Francisco has 52 outbound flights to Chicago O'Hare Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

    A quick flight from San Francisco to Chicago O'Hare Intl Airport can take about 4h 24m. Delta provides one of the quickest options available for as low as £229. There are 1841 mi 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?

    The top 3 most reliable airlines when flying from San Francisco to Chicago O'Hare Intl Airport are China Southern (100%), Fiji Airways (92%) and Asiana Airlines (91%).

  • What are the cheapest flights from San Francisco to Chicago O'Hare Intl Airport?

    Looking at all options, your cheapest flight can be booked for £124. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for £302 on average, our data indicates £152 when flying from San Francisco to Chicago O'Hare Intl Airport.

  • 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 £85). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of £156). 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

Travelling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Downers Grove
Elk Grove Village

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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

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Deals for San Francisco to O'Hare Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Yes, we can. To see specific flights from San Francisco to O'Hare Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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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