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 8h 45m. Hawaiian Airlines provides one of the quickest options available for as low as £160. 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 is the cheapest day to fly from San Francisco to Chicago O'Hare Intl Airport?

Travellers seeking maximum savings on their San Francisco to Chicago O'Hare Intl Airport flight should consider departing on Saturday evenings when fares are most often at their lowest. Saturday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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

The most flights from SFO to ORD are scheduled on a Monday (94 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (60 on average).

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

If weather is an important factor for your trip to Chicago O'Hare Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 £260. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for £148 on average, our data indicates £487 when flying from San Francisco to Chicago O'Hare Intl Airport.

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 ITA Airways (100%), Fiji Airways (83%) and Asiana Airlines (83%).

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 79 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.

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.

£79+ Cheap Flights from San Francisco to Chicago O'Hare Intl Airport

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

Airfare is below average for this route at the moment. San Francisco to Chicago O'Hare Intl Airport flights typically cost between £176 and £327 in December. The cheapest return flight price found within the last 3 days was £154 on Alaska Airlines (10 Dec-15 Dec).

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 Monday

Cheap flight deals from San Francisco to O'Hare Intl

Round-trip from	£154
One-way from	£79
Popular in	November
Cheapest in	January
Average price	£235
Good round-trip deal	£384 or less

Alaska Airlines
10/12-15/12
3 total stops
25h 51m total
San Francisco to Chicago

Search Deals

Frontier
16/10
1 total stop
12h 33m total
San Francisco to Chicago

Search Deals

Highest demand for flights based on searches. 15% potential increase in price (£37 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£6 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Price to beat on a round-trip flight from San Francisco to Chicago O'Hare Intl.

Search Deals

Find flight deals from San Francisco to O'Hare Intl

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 18 September 2025.

Wed 10/1210:06SFO - ORD

2 stops11h 44mAlaska Airlines

Mon 15/1219:59ORD - SFO

1 stop14h 07mAlaska Airlines

Deal found 16/9£154

Fri 12/1207:00SFO - ORD

1 stop9h 54mAlaska Airlines

Mon 15/1219:59ORD - SFO

1 stop14h 07mAlaska Airlines

Deal found 17/9£155

Wed 10/1208:09SFO - ORD

1 stop8h 45mHawaiian Airlines

Tue 16/1215:05ORD - SFO

1 stop8h 41mHawaiian Airlines

Deal found 16/9£160

Sat 1/1107:00SFO - ORD

1 stop14h 59mAlaska Airlines

Tue 4/1109:20ORD - SFO

2 stops10h 07mAlaska Airlines

Deal found 17/9£174

Tue 21/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Wed 12/1109:20ORD - SFO

1 stop14h 41mAlaska Airlines

Deal found 16/9£174

Thu 11/1208:09SFO - ORD

1 stop8h 45mHawaiian Airlines

Mon 15/1215:05ORD - SFO

1 stop8h 41mHawaiian Airlines

Deal found 16/9£178

Tue 14/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Sat 18/1017:59ORD - SFO

1 stop17h 17mAlaska Airlines

Deal found 17/9£183

Fri 10/1012:00SFO - ORD

1 stop9h 59mAlaska Airlines

Wed 15/1019:59ORD - SFO

1 stop14h 06mAlaska Airlines

Deal found 17/9£184

Fri 31/1007:00SFO - ORD

1 stop14h 59mAlaska Airlines

Tue 4/1108:00ORD - SFO

2 stops11h 27mAlaska Airlines

Deal found 17/9£188

Tue 21/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Thu 6/1114:54ORD - SFO

1 stop9h 07mAlaska Airlines

Deal found 17/9£188

Best flights from San Francisco to O'Hare Intl
Discover carefully curated flight deals from San Francisco to O'Hare Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Wed 10/1208:09SFO - ORD

1 stop8h 45mHawaiian Airlines

Tue 16/1215:05ORD - SFO

1 stop8h 41mHawaiian Airlines

Deal found 16/9£160

Tue 4/1110:35SFO - ORD

1 stop11h 24mAlaska Airlines

Fri 7/1114:54ORD - SFO

1 stop9h 24mAlaska Airlines

Deal found 17/9£174

Wed 3/1206:00SFO - ORD

1 stop7h 23mDelta

Sun 7/1207:47ORD - SFO

1 stop10h 10mDelta

Deal found 16/9£204

Tue 14/1012:30SFO - ORD

1 stop8h 35mSouthwest

Wed 29/1007:00ORD - SFO

2 stops9h 10mSouthwest

Deal found 17/9£221

Wed 5/1107:00SFO - ORD

1 stop14h 59mAlaska Airlines

Sat 8/1120:59ORD - SFO

1 stop13h 51mAlaska Airlines

Deal found 17/9£204

Wed 17/1208:09SFO - ORD

1 stop8h 45mHawaiian Airlines

Fri 16/114:59ORD - SFO

1 stop7h 05mHawaiian Airlines

Deal found 17/9£205

Wed 15/1006:00SFO - ORD

1 stop9h 10mDelta

Sat 25/1017:15ORD - SFO

1 stop7h 01mDelta

Deal found 17/9£225

Mon 5/119:48SFO - ORD

1 stop16h 49mAlaska Airlines

Sat 31/114:59ORD - SFO

1 stop10h 34mAlaska Airlines

Deal found 17/9£205

Sat 1/1105:00SFO - ORD

1 stop6h 05mSouthwest

Tue 4/1114:15ORD - SFO

2 stops10h 15mSouthwest

Deal found 17/9£229

Tue 14/1013:45SFO - ORD

1 stop8h 05mDelta

Thu 23/1007:37ORD - SFO

1 stop10h 28mDelta

Deal found 17/9£225

Wed 29/1000:35SFO - ORD

1 stop9h 00mDelta

Mon 3/1107:50ORD - SFO

1 stop6h 30mDelta

Deal found 16/9£232

Fri 10/1000:35SFO - ORD

1 stop8h 53mDelta

Thu 16/1018:05ORD - SFO

1 stop7h 28mDelta

Deal found 16/9£232

Direct flights from San Francisco to O'Hare Intl
Explore direct flight options from San Francisco to O'Hare Intl based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2025.

Tue 21/1006:30SFO - ORD

Nonstop4h 35mUnited Airlines

Wed 22/1016:25ORD - SFO

Nonstop4h 38mUnited Airlines

Deal found 16/9£203

Sat 11/1015:00SFO - ORD

Nonstop4h 24mUnited Airlines

Tue 14/1015:47ORD - SFO

Nonstop4h 41mUnited Airlines

Deal found 17/9£210

Sat 11/1023:00SFO - ORD

Nonstop4h 13mUnited Airlines

Sat 18/1006:15ORD - SFO

Nonstop4h 38mUnited Airlines

Deal found 16/9£218

Wed 22/1023:33SFO - ORD

Nonstop4h 22mUnited Airlines

Sun 9/1107:10ORD - SFO

Nonstop4h 45mUnited Airlines

Deal found 17/9£220

Thu 6/1105:10SFO - ORD

Nonstop4h 20mUnited Airlines

Sun 9/1106:15ORD - SFO

Nonstop4h 49mUnited Airlines

Deal found 18/9£227

Tue 7/1016:55SFO - ORD

Nonstop4h 17mUnited Airlines

Thu 9/1007:18ORD - SFO

Nonstop4h 46mUnited Airlines

Deal found 16/9£230

Thu 30/1005:10SFO - ORD

Nonstop4h 20mUnited Airlines

Sun 2/1105:15ORD - SFO

Nonstop4h 49mUnited Airlines

Deal found 16/9£231

Fri 10/1018:35SFO - ORD

Nonstop4h 19mUnited Airlines

Tue 14/1015:47ORD - SFO

Nonstop4h 41mUnited Airlines

Deal found 17/9£234

Fri 7/1118:42SFO - ORD

Nonstop4h 17mUnited Airlines

Sun 9/1106:15ORD - SFO

Nonstop4h 49mUnited Airlines

Deal found 17/9£237

Sat 1/1114:45SFO - ORD

Nonstop4h 18mUnited Airlines

Mon 3/1107:10ORD - SFO

Nonstop4h 45mUnited Airlines

Deal found 15/9£240

Wed 8/1016:55SFO - ORD

Nonstop4h 17mUnited Airlines

Sun 12/1007:18ORD - SFO

Nonstop4h 46mUnited Airlines

Deal found 16/9£243

Thu 18/1205:00SFO - ORD

Nonstop4h 23mUnited Airlines

Sat 17/114:40ORD - SFO

Nonstop4h 56mUnited Airlines

Deal found 17/9£245

Last-minute flights from San Francisco to O'Hare Intl
Discover last-minute flight deals from San Francisco to O'Hare Intl. Data last updated 18 September 2025 and is based on user searches.

Fri 10/1012:00SFO - ORD

1 stop9h 59mAlaska Airlines

Wed 15/1019:59ORD - SFO

1 stop14h 06mAlaska Airlines

Deal found 17/9£184

Mon 13/1021:17SFO - ORD

1 stop15h 33mAlaska Airlines

Wed 15/1019:59ORD - SFO

1 stop14h 06mAlaska Airlines

Deal found 16/9£196

Tue 14/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Sat 18/1017:59ORD - SFO

1 stop17h 17mAlaska Airlines

Deal found 17/9£183

Tue 14/1010:40SFO - ORD

2 stops11h 10mDelta

Sat 18/1007:37ORD - SFO

1 stop10h 28mDelta

Deal found 16/9£195

Tue 21/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Wed 12/1109:20ORD - SFO

1 stop14h 41mAlaska Airlines

Deal found 16/9£174

Tue 21/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Thu 6/1114:54ORD - SFO

1 stop9h 07mAlaska Airlines

Deal found 17/9£188

Tue 21/1010:26SFO - ORD

1 stop11h 33mAlaska Airlines

Mon 10/1120:59ORD - SFO

1 stop16h 02mAlaska Airlines

Deal found 16/9£191

Sat 25/1010:35SFO - ORD

1 stop11h 19mDelta

Fri 7/1107:37ORD - SFO

1 stop17h 56mDelta

Deal found 16/9£191

Tue 28/1010:35SFO - ORD

1 stop6h 24mHawaiian Airlines

Wed 29/1014:54ORD - SFO

1 stop9h 07mHawaiian Airlines

Deal found 17/9£189

Tue 28/1009:51SFO - ORD

2 stops12h 08mAlaska Airlines

Wed 29/1009:20ORD - SFO

1 stop14h 41mAlaska Airlines

Deal found 17/9£193

Fri 31/1007:00SFO - ORD

1 stop14h 59mAlaska Airlines

Tue 4/1108:00ORD - SFO

2 stops11h 27mAlaska Airlines

Deal found 17/9£188

One-way flights from San Francisco to O'Hare Intl
Search for one-way flight options from San Francisco to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Thu 2/1023:57SFO - ORD

1 stop13h 57mFrontier

Deal found 17/9£79

Tue 16/1208:09SFO - ORD

1 stop8h 45mHawaiian Airlines

Deal found 16/9£80

Mon 15/1218:13SFO - ORD

1 stop22h 41mAlaska Airlines

Deal found 16/9£84

Wed 12/1110:35SFO - ORD

1 stop7h 20mAlaska Airlines

Deal found 16/9£87

Sun 9/1118:33SFO - ORD

2 stops13h 29mFrontier

Deal found 16/9£89

Mon 13/1006:45SFO - ORD

1 stop30h 05mAlaska Airlines

Deal found 16/9£92

Wed 10/1210:06SFO - ORD

2 stops11h 44mAlaska Airlines

Deal found 18/9£94

Tue 4/1110:35SFO - ORD

1 stop7h 20mHawaiian Airlines

Deal found 17/9£95

Sun 23/1123:59SFO - ORD

1 stop8h 40mSun Country Air

Deal found 16/9£95

Sat 25/1006:00SFO - ORD

1 stop9h 18mDelta

Deal found 16/9£96

Tue 27/114:30SFO - ORD

1 stop6h 40mAlaska Airlines

Deal found 16/9£97

Cheapflights Fare Finder

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

Fly to

Route

Depart

Return

Price

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 10/12

08:09-18:54

1 stop8h 45m

Chicago O'Hare Intl

Tue 16/12

15:05-21:46

1 stop8h 41m

£160

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 4/11

10:35-23:59

1 stop11h 24m

Chicago O'Hare Intl

Fri 7/11

14:54-22:18

1 stop9h 24m

£174

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 5/11

07:00-23:59

1 stop14h 59m

Chicago O'Hare Intl

Sat 8/11

20:59-08:50

1 stop13h 51m

£204

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 3/12

06:00-15:23

1 stop7h 23m

Chicago O'Hare Intl

Sun 7/12

07:47-15:57

1 stop10h 10m

£204

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 17/12

08:09-18:54

1 stop8h 45m

Chicago O'Hare Intl

Fri 16/1

14:59-20:04

1 stop7h 05m

£205

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 5/1

19:48-14:37

1 stop16h 49m

Chicago O'Hare Intl

Sat 31/1

14:59-23:33

1 stop10h 34m

£205

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 14/10

12:30-23:05

1 stop8h 35m

Chicago O'Hare Intl

Wed 29/10

07:00-14:10

2 stops9h 10m

£221

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 15/10

06:00-17:10

1 stop9h 10m

Chicago O'Hare Intl

Sat 25/10

17:15-22:16

1 stop7h 01m

£225

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 14/10

13:45-23:50

1 stop8h 05m

Chicago O'Hare Intl

Thu 23/10

07:37-16:05

1 stop10h 28m

£225

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 1/11

05:00-13:05

1 stop6h 05m

Chicago O'Hare Intl

Tue 4/11

14:15-22:30

2 stops10h 15m

£229

Flights are sorted by cheapest return flights first.

Deals found on 18/9

Showing 1-10 of 22 results

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

Prices

Airlines

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

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, January is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of £595). Flying from San Francisco to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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?

When flying from San Francisco to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 46% versus a flight in the morning.

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

Related info for your journey

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 79 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 8h 45m. Hawaiian Airlines provides one of the quickest options available for as low as £160. 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 ITA Airways (100%), Fiji Airways (83%) and Asiana Airlines (83%).
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 £260. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for £148 on average, our data indicates £487 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, January is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of £595). Flying from San Francisco to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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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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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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from £79

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 2/10. Fares are subject to change and may not be available on all flights or dates of travel.

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 Monday

Cheap flight deals from San Francisco to O'Hare Intl

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Find flight deals from San Francisco to O'Hare Intl

Cheapest flights from San Francisco to O'Hare IntlExplore 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 18 September 2025.

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 18 September 2025.

Cheapflights Fare Finder

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

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.

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?

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

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

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

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

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?

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

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

What are the cheapest flights 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?

How can I 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?

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

Travelling to a place near Chicago O'Hare Intl Airport?

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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 18 September 2025.