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 $438 and $719 in October. The cheapest return price found within the last 5 days was $357 on United Airlines (3 Oct–7 Oct).

Question 1

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

Accepted Answer

Over the past year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.

Question 2

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

Accepted Answer

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

Question 3

How often are flights from San Francisco to Chicago delayed?

Accepted Answer

About 10% of weekly flights between San Francisco and Chicago have experienced delays in the past year, with the average delay time being 188 minutes.

Question 4

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

Accepted Answer

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

Question 5

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

Accepted Answer

Airfare is below average for this route at the moment.San Francisco to Chicago O'Hare Intl Airport flights typically cost between $438 and $719 in October.
The cheapest return price found within the last 5 days was $357 on United Airlines (3 Oct–7 Oct).

Question 6

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

Accepted Answer

Departing from San Francisco to Chicago O'Hare Intl Airport will take you 4h 21m. There are 2963 km 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.

Question 7

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

Accepted Answer

The price you pay for your flight from San Francisco to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 66 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Question 8

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

Accepted Answer

Currently, January is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $523). Flying from San Francisco to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $705). 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.

Question 9

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

Accepted Answer

The most flights from SFO to ORD are scheduled on a Sunday (91 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (23 on average).

Question 10

E

Accepted Answer

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.

Question 11

E

Accepted Answer

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).

Question 12

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

Accepted Answer

Looking at all options, your cheapest flight can be booked for $171. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $568 on average, our data indicates $256 when flying from San Francisco to Chicago O'Hare Intl Airport.

Question 13

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

Accepted Answer

Before booking your flight to Chicago O'Hare Intl Airport from San Francisco, have a look at the most reliable airlines to get you to your destination on time: ITA Airways (92%), Austrian Airlines (76%), Brussels Airlines( 74%).

Question 14

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

Accepted Answer

It’s typically best to fly out from San Francisco to Chicago O'Hare Intl Airport in the morning. Doing so could potentially save you 49% on the flight price compared to flying at midday, which is usually more expensive.

Question 15

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

Accepted Answer

San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to Chicago O'Hare Intl. You should not have trouble finding flights to Chicago O'Hare Intl from San Francisco; the airport handles an average of 65 outbound flights to Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to Chicago O'Hare Intl. It is only a 17.7 km journey to San Francisco (SFO) from San Francisco’s city centre.

Question 16

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

Accepted Answer

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

Question 17

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

Accepted Answer

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.

Question 18

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

Accepted Answer

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.

Question 19

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

Accepted Answer

Cheapflights helps you search for flights from San Francisco to O'Hare Intl via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.

Question 20

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

Accepted Answer

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

Question 21

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

Accepted Answer

Yes! Cheapflights helps users easily find flights from San Francisco to O'Hare Intl with no change fees.

Question 22

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

Accepted Answer

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

Round-trip from	$357
One-way from	$179
Popular in	June
Cheapest in	January
Average price	$550
Good one-way deal	$179 or less

Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $179

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 15/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap 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 7 September 2026.

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 7 September 2026.

Best flights from San Francisco to O'Hare IntlDiscover 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 7 September 2026.

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 7 September 2026.

Direct flights from San Francisco to O'Hare IntlExplore 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 7 September 2026.

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 7 September 2026.

Last-minute flights from San Francisco to O'Hare IntlDiscover last-minute flight deals from San Francisco to O'Hare Intl. Data last updated 7 September 2026 and is based on user searches.

Discover last-minute flight deals from San Francisco to O'Hare Intl. Data last updated 7 September 2026 and is based on user searches.

One-way flights from San Francisco to O'Hare IntlSearch for one-way flight options from San Francisco to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated 7 September 2026.

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 7 September 2026.

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Cheapflights Insights

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

The price you pay for your flight from San Francisco to Chicago O'Hare Intl Airport may vary depending on when you book. For the best chance of a lower fare, look to book 66 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 San Francisco to Chicago O'Hare Intl Airport?

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

It’s typically best to fly out from San Francisco to Chicago O'Hare Intl Airport in the morning. Doing so could potentially save you 49% on the flight price compared to flying at midday, which is usually more expensive.

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 $438 and $719 in October.The cheapest return price found within the last 5 days was $357 on United Airlines (3 Oct–7 Oct).

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

The most flights from SFO to ORD are scheduled on a Sunday (91 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (23 on average).

How often are flights from San Francisco to Chicago delayed?

About 10% of weekly flights between San Francisco and Chicago have experienced delays in the past year, with the average delay time being 188 minutes.

What is the most punctual flight time for San Francisco to Chicago 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 Sunday has historically faced a higher average of delays compared to other days of the week.

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

Over the past year, United Airlines have had the lowest number of delays on this route, with just 9% of flights being delayed.

Related info for your journey

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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San Francisco and O'Hare Intl flights

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

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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 7 September 2026.

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 7 September 2026.

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 7 September 2026.

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 7 September 2026 and is based on user searches.

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 7 September 2026.

San Francisco to Chicago O'Hare Intl Airport flights typically cost between $438 and $719 in October.
The cheapest return price found within the last 5 days was $357 on United Airlines (3 Oct–7 Oct).