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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from £81

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 15/11. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SFO
29 Oct — 5 Nov1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Francisco are usually found in April or May, booked 89 days in advance, depart on a Monday or Wednesday and return on a Wednesday

Cheap flight deals from O'Hare Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to San Francisco (SFO). 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 29 September 2025.

Round-trip from

£163

One-way from

£81

Popular in

March

Cheapest in

April

Average price

£236

Good one-way deal

£142 or less
Alaska Airlines
  • Alaska Airlines
  • 5/11-12/11
  • 2 total stops
  • 29h 40m total
  • Chicago to San Francisco
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Alaska Airlines
  • Alaska Airlines
  • 15/11
  • 1 total stop
  • 9h 01m total
  • Chicago to San Francisco
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Highest demand for flights based on searches. 2% potential increase in price (£3 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in September 2025
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Price to beat on a one-way flight from Chicago O'Hare Intl to San Francisco.
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Find flight deals from O'Hare Intl to San Francisco

Cheapest flights from O'Hare Intl to San Francisco
Explore the most affordable flight options available from O'Hare Intl to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 September 2025.

Wed 5/1109:20ORD - SFO
1 stop14h 41mAlaska Airlines
Wed 12/1107:00SFO - ORD
1 stop14h 59mAlaska Airlines
Deal found 27/9£163
Tue 21/1021:13ORD - SFO
Nonstop4h 46mUnited Airlines
Tue 28/1023:44SFO - ORD
Nonstop4h 18mUnited Airlines
Deal found 27/9£174
Wed 29/1008:00ORD - SFO
1 stop9h 43mAlaska Airlines
Wed 5/1107:00SFO - ORD
1 stop14h 59mAlaska Airlines
Deal found 29/9£175
Tue 28/1019:59ORD - SFO
1 stop24h 15mAlaska Airlines
Tue 4/1110:35SFO - ORD
1 stop7h 20mAlaska Airlines
Deal found 28/9£178
Tue 28/1008:00ORD - SFO
1 stop9h 43mAlaska Airlines
Tue 11/1107:00SFO - ORD
1 stop14h 59mAlaska Airlines
Deal found 29/9£179
Thu 11/1215:05ORD - SFO
1 stop8h 41mAlaska Airlines
Tue 16/1208:09SFO - ORD
1 stop9h 45mAlaska Airlines
Deal found 29/9£180
Wed 12/1111:10ORD - SFO
Nonstop4h 52mAmerican Airlines
Wed 19/1113:11SFO - ORD
Nonstop4h 34mAmerican Airlines
Deal found 28/9£181
Tue 9/1220:59ORD - SFO
1 stop13h 07mAlaska Airlines
Wed 31/1208:20SFO - ORD
1 stop9h 43mAlaska Airlines
Deal found 26/9£186
Tue 21/1008:20ORD - SFO
1 stop7h 41mAlaska Airlines
Wed 22/1010:26SFO - ORD
1 stop11h 33mAlaska Airlines
Deal found 27/9£186
Thu 23/1021:13ORD - SFO
Nonstop4h 46mUnited Airlines
Tue 28/1022:40SFO - ORD
Nonstop4h 20mUnited Airlines
Deal found 28/9£187
Tue 21/1006:00ORD - SFO
1 stop9h 44mAlaska Airlines
Tue 28/1014:46SFO - ORD
1 stop7h 38mAlaska Airlines
Deal found 29/9£188

Cheapflights Fare Finder

 
Customise your flight search to find flights from O'Hare Intl to San Francisco 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 29 September 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Francisco that are best for you.

Fly from

O'Hare Intl

Fly to

San Francisco

Route

Depart

Return

Price

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 9/12

20:59-08:06

1 stop13h 07m

San Francisco

Tue 16/12

08:09-19:54

1 stop9h 45m

£163

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 10/12

15:05-21:46

1 stop8h 41m

San Francisco

Tue 6/1

22:16-13:59

1 stop13h 43m

£186

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 28/10

07:37-16:05

1 stop10h 28m

San Francisco

Mon 10/11

00:30-08:30

1 stop6h 00m

£192

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 12/11

14:35-23:10

1 stop10h 35m

San Francisco

Tue 18/11

00:30-08:30

1 stop6h 00m

£192

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 3/11

07:00-12:35

1 stop7h 35m

San Francisco

Wed 12/11

07:00-23:59

1 stop14h 59m

£192

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 3/12

13:00-17:25

1 stop6h 25m

San Francisco

Tue 9/12

10:30-22:35

2 stops10h 05m

£196

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 28/10

06:00-21:20

2 stops17h 20m

San Francisco

Tue 4/11

05:10-13:30

1 stop6h 20m

£204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 9/12

06:00-13:34

1 stop9h 34m

San Francisco

Tue 30/12

00:10-09:26

1 stop7h 16m

£210

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 6/11

14:54-23:46

1 stop10h 52m

San Francisco

Sun 9/11

07:00-23:59

1 stop14h 59m

£211

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 3/12

13:00-17:25

1 stop6h 25m

San Francisco

Sat 6/12

12:40-22:35

1 stop7h 55m

£213

Flights are sorted by cheapest return flights first.

Deals found on 27/9

Showing 1-10 of 23 results
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Best time to book a flight from O'Hare Intl to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from O'Hare Intl 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 Chicago O'Hare Intl Airport to San Francisco

How far ahead should I book a flight from Chicago O'Hare Intl Airport to San Francisco?

Use this chart to determine the optimal time to book a return flight from O'Hare Intl to San Francisco. Price data was last updated on 26 September 2025.

The price you pay for your flight from Chicago O'Hare Intl Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 89 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 Chicago O'Hare Intl Airport to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Francisco (average of £538). Flying from Chicago O'Hare Intl Airport to San Francisco in July is currently the most expensive (average of £803). 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 ORD to SFO?

Find hourly flight availability from O'Hare Intl to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 29 September 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 45% on flights from Chicago O'Hare Intl Airport to San Francisco by exploring options for tickets in the morning.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to San Francisco. 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 into for flights to San Francisco from Chicago O'Hare Intl?

    San Francisco (SFO) is the airport you will fly into if you book a flight from Chicago O'Hare Intl to San Francisco. You should not have trouble finding flights to San Francisco from Chicago O'Hare Intl; the airport handles an average of 72 inbound flights from Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights to the San Francisco airport from Chicago O'Hare Intl. It is only a 11.8 mi journey from San Francisco (SFO) to San Francisco’s city center.

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

    A quick flight from Chicago O'Hare Intl Airport to San Francisco can take about 10h 28m. Alaska Airlines provides one of the quickest options available for as low as £192. Chicago O'Hare Intl Airport and San Francisco are separated by a distance of 1841 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the most reliable airlines from Chicago O'Hare Intl Airport to San Francisco?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Chicago O'Hare Intl Airport to San Francisco on time: Air China (84%), ANA (80%), United Airlines (76%).

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

    While on average a flight from Chicago O'Hare Intl Airport to San Francisco is generally £357, our data shows the cheapest flight currently is £75. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay £157 for that flight.

  • Can I find deals for flights from O'Hare Intl to San Francisco that include hotel bookings?

    Yes. In addition to deals on O'Hare Intl to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from O'Hare Intl to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from O'Hare Intl to San Francisco.

  • Can I find deals for business class flights from O'Hare Intl to San Francisco?

    Yes. Cheapflights offers flight deals from O'Hare Intl to San Francisco 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 Chicago O'Hare Intl Airport to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Francisco (average of £538). Flying from Chicago O'Hare Intl Airport to San Francisco in July is currently the most expensive (average of £803). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
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Bodega Bay
Pacific Grove

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Fly with Cheapflights

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

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to San Francisco from O'Hare Intl today with Cheapflights!

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

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

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from O'Hare Intl to San Francisco, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to San Francisco from O'Hare Intl today and book when prices fit your budget.

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