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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from £92

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 27/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
30 Nov — 7 Dec1
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 31 October 2025.

Round-trip from

£212

One-way from

£92

Popular in

November

Cheapest in

January

Average price

£335

Good one-way deal

£123 or less
Alaska Airlines
  • Alaska Airlines
  • 15/12-20/12
  • 2 total stops
  • 27h 29m total
  • San Francisco to Chicago
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Alaska Airlines
  • Alaska Airlines
  • 17/2
  • 1 total stop
  • 8h 40m total
  • San Francisco to Chicago
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Highest demand for flights based on searches. 18% potential increase in price (£47 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£6 potential savings vs. average return price).
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Average for round-trip flights in October 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 31 October 2025.

Mon 15/1221:57SFO - ORD
1 stop14h 12mAlaska Airlines
Sat 20/1220:58ORD - SFO
1 stop13h 17mAlaska Airlines
Deal found 30/10£212
Sun 23/1107:00SFO - ORD
1 stop14h 32mAlaska Airlines
Tue 2/1220:59ORD - SFO
1 stop13h 07mAlaska Airlines
Deal found 29/10£213
Thu 11/1207:00SFO - ORD
1 stop14h 50mAlaska Airlines
Fri 19/1215:37ORD - SFO
1 stop10h 50mAlaska Airlines
Deal found 30/10£215
Wed 19/1110:35SFO - ORD
1 stop7h 20mAlaska Airlines
Fri 21/1108:20ORD - SFO
1 stop17h 37mAlaska Airlines
Deal found 29/10£216
Fri 12/1207:00SFO - ORD
1 stop14h 50mAlaska Airlines
Thu 18/1208:39ORD - SFO
2 stops11h 23mAlaska Airlines
Deal found 30/10£219
Tue 2/1211:35SFO - ORD
2 stops10h 15mAlaska Airlines
Fri 5/1215:05ORD - SFO
1 stop19h 01mAlaska Airlines
Deal found 31/10£219
Sat 13/1214:50SFO - ORD
1 stop7h 00mAlaska Airlines
Sat 20/1220:58ORD - SFO
1 stop13h 17mAlaska Airlines
Deal found 30/10£220
Fri 12/1208:09SFO - ORD
1 stop9h 45mAlaska Airlines
Mon 15/1215:05ORD - SFO
1 stop8h 41mAlaska Airlines
Deal found 31/10£222
Wed 19/1107:00SFO - ORD
1 stop10h 55mAlaska Airlines
Mon 24/1106:00ORD - SFO
1 stop18h 41mAlaska Airlines
Deal found 29/10£223
Thu 27/1106:00SFO - ORD
1 stop9h 21mDelta
Wed 3/1206:00ORD - SFO
1 stop9h 33mDelta
Deal found 29/10£224
Tue 18/1100:30SFO - ORD
1 stop9h 04mDelta
Mon 24/1117:42ORD - SFO
1 stop8h 30mDelta
Deal found 29/10£225

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 31 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 6/12

13:30-19:42

Nonstop4h 12m

Chicago O'Hare Intl

Tue 16/12

12:45-15:35

Nonstop4h 50m

£226

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 6/12

14:50-21:07

Nonstop4h 17m

Chicago O'Hare Intl

Tue 9/12

12:45-15:35

Nonstop4h 50m

£226

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 12/12

11:19-07:56

1 stop18h 37m

Chicago O'Hare Intl

Mon 22/12

10:51-22:54

1 stop14h 03m

£237

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sun 14/12

00:30-08:40

1 stop6h 10m

Chicago O'Hare Intl

Thu 18/12

05:30-12:36

1 stop9h 06m

£241

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 30/12

07:00-23:59

1 stop14h 59m

Chicago O'Hare Intl

Sat 3/1

08:39-00:27

1 stop17h 48m

£248

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 13/2

21:40-17:50

1 stop18h 10m

Chicago O'Hare Intl

Sun 15/2

07:45-23:43

1 stop17h 58m

£260

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 17/1

19:55-14:29

2 stops16h 34m

Chicago O'Hare Intl

Tue 20/1

08:00-19:50

2 stops13h 50m

£260

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 12/2

08:00-23:10

2 stops13h 10m

Chicago O'Hare Intl

Sun 15/2

10:00-23:43

1 stop15h 43m

£261

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 16/12

10:06-23:50

2 stops11h 44m

Chicago O'Hare Intl

Sat 3/1

08:39-00:27

1 stop17h 48m

£270

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 18/2

00:40-11:33

1 stop8h 53m

Chicago O'Hare Intl

Mon 23/2

07:30-16:29

2 stops10h 59m

£272

Flights are sorted by cheapest return flights first.

Deals found on 30/10

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 24 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 £84). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of £148). 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 31 October 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 31 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 12m. Alaska Airlines provides one of the quickest options available for as low as £226. 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%), ITA Airways (90%) and Asiana Airlines (90%).

  • 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 £115. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for £182 on average, our data indicates £151 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 £84). Flying from San Francisco to Chicago O'Hare Intl Airport in November is currently the most expensive (average of £148). 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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