What is the most punctual flight time for Chicago to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

How often are flights from Chicago to San Francisco delayed?

About 25% of weekly flights between Chicago and San Francisco have experienced delays in the past year, with the average delay time being 179 minutes.

Which airline has the best punctuality record on Chicago to San Francisco flights?

Over the past year, United Airlines has had the lowest number of delays on this route, with just 22% of flights being delayed.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

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

There are many flights that can get you from Chicago O'Hare Intl Airport to San Francisco in 4h 44m. Fly via United Airlines, Delta, or Alaska Airlines to get the fastest option. Chicago O'Hare Intl Airport and San Francisco are separated by a distance of 2963 km. Both multi-stop and direct flights can be found to your destination and back.

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

The most flights from ORD to SFO are scheduled on a Friday (90 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (27 on average).

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 112.0 mm per month. January is typically the wettest month, when rainfall can reach 112.0 mm. July is typically the driest time to visit San Francisco when rainfall is around 0.0 mm.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

What airport do you fly into for flights to San Francisco from Chicago O'Hare Intl?

If you book a flight to San Francisco from Chicago O'Hare Intl, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 17.7 km from the centre of San Francisco. There are 62 flights from Chicago O'Hare Intl to San Francisco per day from 0 different airlines.

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 vacation 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.

C$ 178+ Cheap Flights from Chicago O'Hare Intl Airport to San Francisco

Cheap flight deals from O'Hare Intl to San Francisco

Enter your travel dates to find the best prices.

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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 6 September 2026.

Fri 25/98:17 p.m. -

1 stop14h 29m

Tue 6/108:20 a.m. -

1 stop8h 33m

Deal found 3/9C$ 343

Wed 30/99:40 p.m. -

Nonstop4h 50m

Sat 3/1011:30 p.m. -

Nonstop4h 29m

Deal found 2/9C$ 356

Thu 24/93:00 p.m. -

1 stop10h 17m

Wed 30/910:24 a.m. -

1 stop10h 44m

Deal found 1/9C$ 357

Fri 25/98:09 p.m. -

Nonstop4h 50m

Sat 26/93:00 p.m. -

Nonstop4h 37m

Deal found 3/9C$ 371

Tue 1/127:18 p.m. -

1 stop6h 52m

Mon 7/126:00 a.m. -

1 stop8h 50m

Deal found 2/9C$ 383

Thu 24/95:44 p.m. -

1 stop8h 07m

Wed 30/96:00 a.m. -

1 stop8h 13m

Deal found 1/9C$ 385

Wed 2/126:00 a.m. -

Nonstop4h 44m

Tue 8/1211:12 p.m. -

Nonstop4h 15m

Deal found 1/9C$ 389

Fri 23/103:49 p.m. -

1 stop10h 03m

Sun 25/106:07 a.m. -

1 stop10h 13m

Deal found 5/9C$ 392

Thu 5/112:15 p.m. -

1 stop9h 42m

Sat 14/118:43 a.m. -

2 stops13h 16m

Deal found 3/9C$ 394

Sat 17/102:21 p.m. -

1 stop7h 10m

Tue 20/107:03 a.m. -

1 stop9h 50m

Deal found 3/9C$ 397

Fri 2/105:44 p.m. -

1 stop8h 07m

Mon 5/108:59 p.m. -

2 stops9h 54m

Deal found 4/9C$ 398

Thu 1/106:30 a.m. -

1 stop19h 44m

Sun 4/1010:24 p.m. -

1 stop29h 14m

Deal found 4/9C$ 401

Find flight deals from O'Hare Intl to San Francisco

Round-trip from	C$ 343
One-way from	C$ 178
Popular in	June
Cheapest in	October
Average price	C$ 517

Alaska Airlines
25/9-6/10
2 total stops
23h 02m total
Chicago to San Francisco

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United Airlines
24/9-31/12
Nonstop
4h 38m total
Chicago to San Francisco

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Highest demand for flights based on searches. 6% potential increase in price (C$ 58 potential increase over avg. RT price).

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Cheapest flight prices on average. 1% potential price decrease (C$ 12 potential savings vs. average RT price).

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Average for round-trip flights in September 2026

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Cheapflights Fare Finder

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 round-trip

Quickest round-trip

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Tue 22/9

6:00 a.m.-8:38 a.m.

Nonstop4h 38m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 178

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Tue 13/10

7:20 a.m.-1:45 p.m.

1 stop8h 25m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 192

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Fri 6/11

5:30 p.m.-11:56 p.m.

1 stop8h 26m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 196

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Thu 3/12

11:39 a.m.-11:38 p.m.

2 stops13h 59m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 203

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Wed 4/11

2:30 p.m.-5:25 p.m.

Nonstop4h 55m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 248

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Thu 26/11

6:00 a.m.-8:44 a.m.

Nonstop4h 44m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 248

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Sat 3/10

7:44 a.m.-10:30 a.m.

Nonstop4h 46m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 248

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Tue 20/10

6:25 p.m.-9:15 p.m.

Nonstop4h 50m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 248

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Tue 8/12

12:40 p.m.-3:33 p.m.

Nonstop4h 53m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 253

ChicagoSan Francisco

ORD Chicago O'Hare Intl - SFO San Francisco

ORDSFO

Chicago O'Hare Intl

Tue 1/12

7:18 p.m.-12:10 a.m.

1 stop6h 52m

San Francisco

Wed 31/12

12:00 a.m.-2:00 a.m.

Nonstop0h 00m

C$ 267

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/9

Showing 1-10 of 23 resultsSorted by cheapest first

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.

ORD-SFO

Estimated round-trip 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

Prices

Airlines

Delays

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

The best time to book flights from Chicago O'Hare Intl Airport to San Francisco is 71 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 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 C$ 512). Flying from Chicago O'Hare Intl Airport to San Francisco in June is currently the most expensive (average of C$ 661). 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?

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

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to San Francisco?

Airfare is below average for this route at the moment.

Chicago O'Hare Intl Airport to San Francisco flights typically cost between C$ 396 and C$ 773 in September.
The cheapest round-trip price found within the last 5 days was C$ 343 on Alaska Airlines (25 Sep-6 Oct).

Related info for your journey

What airport do you fly into for flights to San Francisco from Chicago O'Hare Intl?
If you book a flight to San Francisco from Chicago O'Hare Intl, you will be flying to San Francisco, which is the city’s only airport. San Francisco (SFO) is located 17.7 km from the centre of San Francisco. There are 62 flights from Chicago O'Hare Intl to San Francisco per day from 0 different airlines.
How long is the flight from Chicago O'Hare Intl Airport to San Francisco?
There are many flights that can get you from Chicago O'Hare Intl Airport to San Francisco in 4h 44m. Fly via United Airlines, Delta, or Alaska Airlines to get the fastest option. Chicago O'Hare Intl Airport and San Francisco are separated by a distance of 2963 km. 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?
The top 3 most reliable airlines when flying from Chicago O'Hare Intl Airport to San Francisco are Air China (84%), Austrian Airlines (73%) and ANA (69%).
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 vacation 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 C$ 512). Flying from Chicago O'Hare Intl Airport to San Francisco in June is currently the most expensive (average of C$ 661). 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.

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

When you search for this flight from O'Hare Intl to San Francisco, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from O'Hare Intl to San Francisco by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Certainly. Search results for flights to San Francisco from O'Hare Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from C$ 178

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 24/9. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from O'Hare Intl to San Francisco

Cheapest flights from O'Hare Intl to San FranciscoExplore 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 6 September 2026.

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 6 September 2026.

Best flights from O'Hare Intl to San FranciscoDiscover carefully curated flight deals from O'Hare Intl to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Discover carefully curated flight deals from O'Hare Intl to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Direct flights from O'Hare Intl to San FranciscoExplore direct flight options from O'Hare Intl to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 September 2026.

Explore direct flight options from O'Hare Intl to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 September 2026.

Last-minute flights from O'Hare Intl to San FranciscoDiscover last-minute flight deals from O'Hare Intl to San Francisco. Data last updated 6 September 2026 and is based on user searches.

Discover last-minute flight deals from O'Hare Intl to San Francisco. Data last updated 6 September 2026 and is based on user searches.

One-way flights from O'Hare Intl to San FranciscoSearch for one-way flight options from O'Hare Intl to San Francisco. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Search for one-way flight options from O'Hare Intl to San Francisco. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

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Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Francisco that are best for you.

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.

Cheapflights Insights

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

The best time to book flights from Chicago O'Hare Intl Airport to San Francisco is 71 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 Chicago O'Hare Intl Airport to San Francisco?

What is the cheapest time of day to fly from ORD to SFO?

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

How much does it cost to fly round-trip from Chicago O'Hare Intl Airport to San Francisco?

Airfare is below average for this route at the moment.

Chicago O'Hare Intl Airport to San Francisco flights typically cost between C$ 396 and C$ 773 in September.The cheapest round-trip price found within the last 5 days was C$ 343 on Alaska Airlines (25 Sep-6 Oct).

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

The most flights from ORD to SFO are scheduled on a Friday (90 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (27 on average).

How often are flights from Chicago to San Francisco delayed?

About 25% of weekly flights between Chicago and San Francisco have experienced delays in the past year, with the average delay time being 179 minutes.

What is the most punctual flight time for Chicago to San Francisco flights?

Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Chicago to San Francisco flights?

Over the past year, United Airlines has had the lowest number of delays on this route, with just 22% of flights being delayed.

Related info for your journey

What airport do you fly into for flights to San Francisco from Chicago O'Hare Intl?

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

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

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

How can I 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?

What is the cheapest month to book a flight from Chicago O'Hare Intl Airport to San Francisco?

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O'Hare Intl and San Francisco flights

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

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

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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 6 September 2026.

Best flights from O'Hare Intl to San Francisco
Discover carefully curated flight deals from O'Hare Intl to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 6 September 2026.

Direct flights from O'Hare Intl to San Francisco
Explore direct flight options from O'Hare Intl to San Francisco based on user searches, and compare prices and availability for your desired travel dates. Data last updated 6 September 2026.

Last-minute flights from O'Hare Intl to San Francisco
Discover last-minute flight deals from O'Hare Intl to San Francisco. Data last updated 6 September 2026 and is based on user searches.

One-way flights from O'Hare Intl to San Francisco
Search for one-way flight options from O'Hare Intl to San Francisco. Find affordable one-way fares based on user searches. Data last updated 6 September 2026.

Chicago O'Hare Intl Airport to San Francisco flights typically cost between C$ 396 and C$ 773 in September.
The cheapest round-trip price found within the last 5 days was C$ 343 on Alaska Airlines (25 Sep-6 Oct).