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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from £74

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SFO
18 Aug — 25 Aug1
1 adult

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 Thursday and return on a Monday

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 13 August 2025.

Round-trip from

£151

One-way from

£74

Popular in

March

Cheapest in

April

Average price

£228

Good round-trip deal

£263 or less

Good one-way deal

£102 or less
Alaska Airlines
  • Alaska Airlines
  • 8/10-14/10
  • 2 total stops
  • 25h 39m total
  • Chicago to San Francisco
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United Airlines
  • United Airlines
  • 10/9
  • Nonstop
  • 4h 41m total
  • Chicago to San Francisco
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Highest demand for flights based on searches. 3% potential increase in price (£5 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 August 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to San Francisco.
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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 13 August 2025.

Wed 8/1008:20ORD - SFO
1 stop7h 41mAlaska Airlines
Tue 21/1010:26SFO - ORD
1 stop11h 33mAlaska Airlines
Deal found 12/8£151
Fri 5/906:45ORD - SFO
Nonstop4h 35mUnited Airlines
Tue 9/923:59SFO - ORD
Nonstop4h 16mUnited Airlines
Deal found 11/8£154
Thu 4/918:37ORD - SFO
Nonstop4h 51mAmerican Airlines
Sat 6/906:00SFO - ORD
Nonstop4h 18mAmerican Airlines
Deal found 12/8£154
Thu 4/907:55ORD - SFO
1 stop7h 27mMultiple Airlines
Wed 10/908:00SFO - ORD
1 stop8h 51mMultiple Airlines
Deal found 12/8£157
Thu 4/907:55ORD - SFO
1 stop7h 27mMultiple Airlines
Fri 5/922:37SFO - ORD
1 stop11h 14mMultiple Airlines
Deal found 12/8£158
Mon 20/1021:54ORD - SFO
1 stop25h 28mFrontier
Sat 25/1013:29SFO - ORD
1 stop6h 40mFrontier
Deal found 12/8£160
Thu 25/921:13ORD - SFO
Nonstop4h 46mUnited Airlines
Sun 28/923:00SFO - ORD
Nonstop4h 13mUnited Airlines
Deal found 12/8£161
Sat 18/1007:00ORD - SFO
1 stop7h 09mFrontier
Mon 27/1013:49SFO - ORD
1 stop6h 55mFrontier
Deal found 12/8£162
Tue 28/1014:54ORD - SFO
1 stop9h 07mHawaiian Airlines
Mon 3/1118:18SFO - ORD
1 stop10h 04mHawaiian Airlines
Deal found 12/8£163
Sat 30/815:10ORD - SFO
1 stop7h 15mSouthwest
Mon 1/921:05SFO - ORD
1 stop12h 45mSouthwest
Deal found 11/8£166
Tue 7/1008:20ORD - SFO
1 stop7h 41mAlaska Airlines
Mon 13/1021:17SFO - ORD
1 stop19h 42mAlaska Airlines
Deal found 12/8£166
Fri 7/1114:05ORD - SFO
1 stop7h 42mAlaska Airlines
Tue 11/1107:00SFO - ORD
1 stop9h 59mAlaska Airlines
Deal found 10/8£168

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 13 August 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

Sat 30/8

16:20-21:25

1 stop7h 05m

San Francisco

Sun 31/8

11:25-23:40

1 stop10h 15m

£151

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 8/10

19:59-08:05

1 stop14h 06m

San Francisco

Tue 14/10

10:26-23:59

1 stop11h 33m

£151

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 28/10

14:54-22:01

1 stop9h 07m

San Francisco

Tue 11/11

07:00-23:59

1 stop14h 59m

£151

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 7/10

08:20-14:01

1 stop7h 41m

San Francisco

Tue 21/10

10:26-23:59

1 stop11h 33m

£151

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 18/9

21:13-23:59

Nonstop4h 46m

San Francisco

Tue 23/9

23:10-05:23

Nonstop4h 13m

£154

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 8/10

21:13-23:59

Nonstop4h 46m

San Francisco

Sun 12/10

18:35-00:54

Nonstop4h 19m

£154

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 10/9

06:15-08:56

Nonstop4h 41m

San Francisco

Sun 14/9

23:10-05:23

Nonstop4h 13m

£154

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 22/10

06:15-08:53

Nonstop4h 38m

San Francisco

Sun 26/10

23:44-06:04

Nonstop4h 20m

£154

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Fri 5/9

14:25-17:07

Nonstop4h 42m

San Francisco

Wed 10/9

23:59-06:15

Nonstop4h 16m

£154

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 10/11

21:07-23:59

Nonstop4h 52m

San Francisco

Tue 18/11

23:44-06:02

Nonstop4h 18m

£154

Flights are sorted by cheapest return flights first.

Deals found on 12/8

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 8 August 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 13 August 2025.

Unlike at midday, when flights are generally more expensive, you can save up to 52% on flights from Chicago O'Hare Intl Airport to San Francisco by exploring options for tickets in the morning.

Weekly flight availability from Chicago O'Hare Intl Airport to San Francisco

Explore weekly flight availability from O'Hare Intl to San Francisco. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 13 August 2025.

The most flights from ORD to SFO are scheduled on a Monday (91 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (55 on average).

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 75 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.

  • What are the cheapest airlines flying from Chicago O'Hare Intl Airport to San Francisco round-trip?

    Cheapflights users have booked flights from Chicago O'Hare Intl Airport to San Francisco round-trip from £151. Other airlines that can offer you cheap pricing are United Airlines, from £154, and American Airlines, from £154. You may be able to fly from Chicago O'Hare Intl Airport to San Francisco for 34% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Chicago O'Hare Intl Airport to San Francisco one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at £74. American Airlines flights start at £74 while deals on Hawaiian Airlines start at £76 one-way.

  • 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: ANA (82%), Air China (79%), Austrian Airlines (78%).

  • 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 £238, our data shows the cheapest flight currently is £73. When looking at the most popular route, (Chicago O'Hare Intl - San Francisco), you can expect to pay £161 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
Newark
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Bodega Bay
Pacific Grove
Union City

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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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