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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from £98

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SFO
30 Apr — 7 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from O'Hare Intl to San Francisco

Enter your travel dates to find the best prices.

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 31 March 2026.

Tue 21/410:30
ORD
-
SFO
Nonstop4h 42m
United Airlines
Tue 28/415:30
SFO
-
ORD
Nonstop4h 23m
United Airlines
Deal found 30/3£179
Tue 28/410:30
ORD
-
SFO
1 stop9h 00m
Southwest
Wed 29/407:20
SFO
-
ORD
2 stops9h 30m
Southwest
Deal found 26/3£180
Wed 29/410:30
ORD
-
SFO
2 stops10h 35m
Southwest
Tue 5/511:25
SFO
-
ORD
2 stops10h 30m
Southwest
Deal found 26/3£184
Tue 5/507:45
ORD
-
SFO
2 stops12h 45m
Southwest
Tue 12/507:20
SFO
-
ORD
2 stops9h 30m
Southwest
Deal found 26/3£188
Wed 6/507:40
ORD
-
SFO
Nonstop4h 53m
United Airlines
Sat 9/514:40
SFO
-
ORD
Nonstop4h 23m
United Airlines
Deal found 31/3£190
Thu 14/518:20
ORD
-
SFO
1 stop7h 45m
Delta
Wed 20/505:55
SFO
-
ORD
1 stop8h 54m
Delta
Deal found 26/3£195
Thu 23/422:45
ORD
-
SFO
Nonstop4h 50m
United Airlines
Wed 29/400:45
SFO
-
ORD
Nonstop4h 22m
United Airlines
Deal found 26/3£196
Fri 19/606:55
ORD
-
SFO
1 stop14h 30m
Frontier
Tue 23/623:52
SFO
-
ORD
1 stop14h 18m
Frontier
Deal found 27/3£197
Wed 13/512:40
ORD
-
SFO
2 stops11h 15m
Frontier
Wed 20/506:00
SFO
-
ORD
1 stop12h 37m
Frontier
Deal found 29/3£199
Wed 13/515:00
ORD
-
SFO
Nonstop4h 58m
American Airlines
Wed 20/505:30
SFO
-
ORD
Nonstop4h 28m
American Airlines
Deal found 29/3£200
Thu 23/422:45
ORD
-
SFO
Nonstop4h 50m
United Airlines
Mon 27/423:52
SFO
-
ORD
Nonstop4h 28m
United Airlines
Deal found 30/3£200
Wed 29/410:30
ORD
-
SFO
2 stops10h 35m
Southwest
Sat 2/511:45
SFO
-
ORD
2 stops8h 35m
Southwest
Deal found 26/3£201

Find 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 31 March 2026.

Round-trip from

£179

One-way from

£98

Popular in

November

Cheapest in

May

Average price

£309
United Airlines
  • United Airlines
  • 21/4-28/4
  • Nonstop
  • 9h 05m total
  • Chicago to San Francisco
Search Deals
United Airlines
  • United Airlines
  • 20/4
  • Nonstop
  • 4h 50m total
  • Chicago to San Francisco
Search Deals
Highest demand for flights based on searches. 9% potential increase in price (£20 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
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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 31 March 2026.
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

Fly to

Route

Depart

Return

Price

Cheapest return flight

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 6/5

07:40-10:33

Nonstop4h 53m

San Francisco

Sat 9/5

14:40-21:03

Nonstop4h 23m

£190

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 16/4

07:15-14:05

1 stop8h 50m

San Francisco

Wed 22/4

22:55-08:01

1 stop7h 06m

£195

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 29/4

10:30-19:05

2 stops10h 35m

San Francisco

Sat 2/5

11:45-22:20

2 stops8h 35m

£201

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 27/4

18:15-23:05

1 stop6h 50m

San Francisco

Mon 4/5

13:25-23:55

2 stops8h 30m

£219

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 10/9

07:00-12:25

1 stop7h 25m

San Francisco

Fri 18/9

07:00-17:01

1 stop8h 01m

£245

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 29/8

06:00-12:59

1 stop8h 59m

San Francisco

Mon 7/9

19:22-06:22

1 stop9h 00m

£252

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 18/6

22:45-01:42

Nonstop4h 57m

San Francisco

Tue 23/6

18:34-00:59

Nonstop4h 25m

£253
Fastest return journey

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 10/6

07:40-10:29

Nonstop4h 49m

San Francisco

Tue 16/6

00:50-07:16

Nonstop4h 26m

£253

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 6/8

07:40-10:29

Nonstop4h 49m

San Francisco

Mon 10/8

23:30-05:57

Nonstop4h 27m

£253

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 13/5

10:30-16:40

2 stops8h 10m

San Francisco

Wed 20/5

11:25-23:55

2 stops10h 30m

£256

Flights are sorted by cheapest return flights first.

Deals found on 26/3

Showing 1-10 of 24 resultsSorted by cheapest first
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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 13 March 2026.

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 82 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Francisco (average of £61). Flying from Chicago O'Hare Intl Airport to San Francisco in March is currently the most expensive (average of £166). 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 31 March 2026.

Unlike at midday, when flights are generally more expensive, you can save up to 49% on flights from Chicago O'Hare Intl Airport to San Francisco by exploring options for tickets in the evening.

How much does it cost for a return flight from Chicago O'Hare Intl Airport to San Francisco?

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 56 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 11.0 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 4h 53m. United Airlines provides one of the quickest options available for as low as £190. 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: ANA (88%), Air China (83%), Air New Zealand (78%).

  • 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, October is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Francisco (average of £61). Flying from Chicago O'Hare Intl Airport to San Francisco in March is currently the most expensive (average of £166). 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
San Bruno
Bodega Bay
South San Francisco
Sunnyvale

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Alternative routes for O'Hare Intl to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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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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