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O'Hare Intl

$151+ Cheap flights from San Francisco (SFO) to O'Hare Intl (ORD)

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 9/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
Sep 3 — Sep 101
Thu 9/3
Thu 9/10
1 adult, Economy
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Find cheap flights from San Francisco to O'Hare Intl with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

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3. Compare prices and book

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Cheapflights Tip: The best prices from San Francisco to Chicago O'Hare Intl are usually found in September or January, booked 89 days in advance, depart on a Wednesday or Saturday and return on a Thursday

Cheap 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 August 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2510:01 am -
1 stop8h 14m
Mon 8/317:05 am -
2 stops13h 40m
Deal found 8/1$281
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:28 pm -
1 stop13h 10m
Sun 9/276:30 am -
1 stop6h 17m
Deal found 8/1$282
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/89:00 pm -
1 stop6h 35m
Tue 11/1011:06 am -
1 stop7h 51m
Deal found 7/31$283
This Frontier deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:29 am -
1 stop13h 31m
Sat 8/222:41 pm -
1 stop11h 37m
Deal found 8/1$284
This Kiwi.com deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/241:07 pm -
2 stops46h 29m
Fri 8/287:05 am -
1 stop13h 58m
Deal found 8/1$285
This Frontier deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/1812:29 am -
1 stop13h 31m
Fri 8/212:41 pm -
1 stop11h 37m
Deal found 7/31$286
This deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/118:25 am -
1 stop8h 56m
Wed 9/167:20 am -
1 stop9h 25m
Deal found 8/1$287
This Kiwi.com deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/210:32 am -
1 stop6h 49m
Tue 9/87:05 am -
1 stop13h 58m
Deal found 8/4$288
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/58:56 pm -
2 stops14h 40m
Fri 9/1110:26 am -
1 stop11h 22m
Deal found 8/3$289
This Cheapflightsfares deal was found by Cheapflights users on 8/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/66:15 am -
1 stop25h 46m
Sun 11/87:00 am -
1 stop27h 23m
Deal found 8/1$290
This Kiwi.com deal was found by Cheapflights users on 7/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/298:23 pm -
1 stop7h 36m
Sat 9/57:44 pm -
2 stops25h 01m
Deal found 7/31$291
This Kiwi.com deal was found by Cheapflights users on 8/3. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/112:29 am -
2 stops17h 39m
Wed 9/96:30 am -
1 stop6h 17m
Deal found 8/3$292

Find flight deals from San Francisco to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to O'Hare Intl (ORD). 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 August 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$281
(Kiwi.com)

One-way from

$151
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$397

Good round-trip deal

$373 or less

Good one-way deal

$212 or less
Provider with most accurate pricing for San Francisco-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for San Francisco-Chicago O'Hare Intl flights.
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From San Francisco to Chicago O'Hare Intl
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One-way flight from San Francisco to Chicago O'Hare Intl
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($45 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from San Francisco to Chicago O'Hare Intl.
Search Deals
Price to beat on a one-way flight from San Francisco to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Francisco to O'Hare Intl 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 2,558,603 searches. Data last updated August 4, 2026.
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

Cheapest round-trip

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 9/4

4:30 pm-10:59 pm

Nonstop4h 29m

Chicago O'Hare Intl

Sun 9/6

8:40 am-11:20 am

Nonstop4h 40m

$309

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 9/5

5:00 am-11:25 am

Nonstop4h 25m

Chicago O'Hare Intl

Tue 9/8

9:40 pm-12:30 am

Nonstop4h 50m

$320

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 10/26

5:10 pm-11:27 pm

Nonstop4h 17m

Chicago O'Hare Intl

Wed 10/28

6:00 am-8:47 am

Nonstop4h 47m

$357

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 9/18

11:30 pm-5:59 am

Nonstop4h 29m

Chicago O'Hare Intl

Sun 9/20

6:00 am-8:38 am

Nonstop4h 38m

$368
Quickest round-trip

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 8/20

12:35 am-6:56 am

Nonstop4h 21m

Chicago O'Hare Intl

Mon 8/31

10:35 am-1:11 pm

Nonstop4h 36m

$399

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 8/17

6:00 am-12:29 pm

Nonstop4h 29m

Chicago O'Hare Intl

Thu 8/27

3:35 pm-6:24 pm

Nonstop4h 49m

$399

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 9/17

10:35 pm-5:01 am

Nonstop4h 26m

Chicago O'Hare Intl

Thu 9/24

6:07 am-8:45 am

Nonstop4h 38m

$423

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 10/21

3:31 pm-5:40 am

2 stops12h 09m

Chicago O'Hare Intl

Sat 10/24

2:21 pm-7:31 pm

1 stop7h 10m

$452

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 8/18

4:29 pm-10:59 pm

Nonstop4h 30m

Chicago O'Hare Intl

Sat 8/22

6:20 pm-9:10 pm

Nonstop4h 50m

$473

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 8/10

12:23 pm-10:00 pm

1 stop7h 37m

Chicago O'Hare Intl

Tue 8/11

8:20 am-2:54 pm

1 stop8h 34m

$494

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/1

Showing 1-10 of 23 resultsSorted by cheapest first
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2
3

Compare providers for flights from San Francisco to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Francisco to O'Hare Intl in August.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapflightsfaresPrice Accuracy2 starsTrust Score*1 star
OvagoPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Francisco-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Chicago O'Hare Intl Airport flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Francisco-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 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 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?

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 46 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?

Currently, September is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $343). Flying from San Francisco to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $508). 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?

Find hourly flight availability from San Francisco to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 4, 2026.

One of the essential ways to save on airfare from San Francisco to Chicago O'Hare Intl Airport is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the afternoon could potentially save you up to 7% on airfare.

What is the cheapest day to fly from San Francisco to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to O'Hare Intl. Price data was last updated on August 1, 2026.

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

How much does it cost to fly round-trip 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 $308 and $499 in August.
The cheapest round-trip price found within the last 5 days was $281 on Frontier (Aug 25-Aug 31).

The best insider tips for San Francisco to Chicago O'Hare Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Francisco to Chicago O'Hare Intl Airport trip
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Robert Schrader

Robert Schrader

Expert on Alaska Airlines

One of the web's original travel bloggers, Robert launched his first site Leave Your Daily Hell in 2009. Since then, he's expanded into destination niche sites (one each for Japan, Thailand and Taiwan), in addition to having written for the inflight magazines of Singapore Airlines and Korean Air. Overall, he's visited nearly 100 countries, and flies business as often as possible.

Read more
Ramsey Qubein

Ramsey Qubein

Expert on ORD

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated August 4, 2026.
See what other customers who have flown with Delta,United Airlines, andJetBlue from San Francisco to Chicago O'Hare Intl Airport have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.8
Good
8,482 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
7.8
Good
8,482 reviews
Delta
7.8
Good
8,482 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
United Airlines
7.4
Good
10,059 reviews
Delta
7.8
Good
8,482 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
JetBlue
7.2
Good
3,026 reviews
Delta
7.8
Good
8,482 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.1
Good
11,845 reviews
Delta
7.8
Good
8,482 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Frontier
5.6
Fair
2,737 reviews
Delta
7.8
Good
8,482 reviews

Boarding

8.1

Crew

8.5

Food

7.2

Comfort

7.8

Entertainment

7.8

Overall

7.8

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

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?

    If you book a flight to Chicago O'Hare Intl from San Francisco, you will be flying from San Francisco, which is the city’s only airport. San Francisco (SFO) is located 11.0 mi from the center of San Francisco. There are 48 flights from San Francisco to Chicago O'Hare Intl per day from 6 different airlines.

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

    For as low as $309, United Airlines can have you in Chicago O'Hare Intl Airport from San Francisco in 4h 29m. There are 1841 mi between San Francisco and Chicago O'Hare Intl Airport. All flights are typically nonstop.

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

    According to our current data, Delta ($122), Frontier ($146), and Alaska Airlines ($195) offers the cheapest pricing from San Francisco to Chicago O'Hare Intl Airport. Delta is priced at 71% lower than the current average price of a flight leaving 3 months from now.

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

    The cheapest airlines for a one-way flight from San Francisco to Chicago O'Hare Intl Airport are Frontier ($86), JetBlue ($96), and American Airlines ($108).

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

    Before booking your flight to Chicago O'Hare Intl Airport from San Francisco, check out the most reliable airlines to get you to your destination on time: ITA Airways (93%), Austrian Airlines (86%), Brussels Airlines( 85%).

  • 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 $118. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $183 on average, our data indicates $1,083 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 vacation 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, September is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $343). Flying from San Francisco to Chicago O'Hare Intl Airport in June is currently the most expensive (average of $508). 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

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

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Benton Harbor
Rosemont
Schaumburg
Naperville
Lake Geneva
Oak Brook
Oakbrook Terrace
Delavan
Gurnee
South Holland
Libertyville
Orland Park
Hoffman Estates
Beloit
Rockford
Aurora
Racine
Great Lakes
Janesville
Joliet

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from San Francisco to O'Hare Intl

Discover the top 6 airlines that operate flights from San Francisco to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$122Average$352FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$146Average$292FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$195Average$382FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$222Average$408FlexibilityNo cancel feeOn-time71%
JetBlueCheapest$225Average$321FlexibilityNo cancel feeOn-time62%
United AirlinesCheapest$252Average$481FlexibilityNo cancel feeOn-time69%

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