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O'Hare Intl

$99+ 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 4/22. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
mar. 10 — mar. 171
lun. 3/10
lun. 3/17
1 adult, Economy
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The best prices from San Francisco to Chicago O'Hare Intl are usually found in January or September, booked 77 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap 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 marzo 5, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$203
(SmartFares)

One-way from

$99
(Alaska Airlines)

Popular in

December

Cheapest in

January

Average price

$389

Good round-trip deal

$335 or less

Good one-way deal

$178 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
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Highest demand for flights based on searches. 3% potential increase in price ($16 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Price to beat on a round-trip flight from San Francisco to Chicago O'Hare Intl.
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Price to beat on a one-way flight from San Francisco to Chicago O'Hare Intl.
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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 marzo 5, 2025.

This SmartFares deal was found by Cheapflights users on 3/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/1712:08 amSFO - ORD
1 stop9h 09mFrontier
vie. 4/255:23 pmORD - SFO
1 stop9h 10mFrontier
Deal found 3/4$203
This Expedia deal was found by Cheapflights users on 3/3. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 3/2312:15 amSFO - ORD
1 stop12h 01mMultiple Airlines
mié. 3/266:56 pmORD - SFO
Nonstop4h 59mMultiple Airlines
Deal found 3/3$204
This Alaska Airlines deal was found by Cheapflights users on 3/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/2211:48 amSFO - ORD
Nonstop4h 32mAlaska Airlines
jue. 4/246:58 pmORD - SFO
Nonstop4h 59mAlaska Airlines
Deal found 3/5$207
This United Airlines deal was found by Cheapflights users on 3/5. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/1012:08 amSFO - ORD
Nonstop4h 22mUnited Airlines
vie. 4/187:52 pmORD - SFO
Nonstop5h 03mUnited Airlines
Deal found 3/5$217
This American Airlines deal was found by Cheapflights users on 3/5. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/812:47 amSFO - ORD
1 stop6h 40mAmerican Airlines
mar. 4/1510:34 amORD - SFO
Nonstop4h 49mAmerican Airlines
Deal found 3/5$218
This Hawaiian Airlines deal was found by Cheapflights users on 3/4. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/1911:52 amSFO - ORD
Nonstop4h 24mHawaiian Airlines
lun. 4/216:56 pmORD - SFO
Nonstop4h 59mHawaiian Airlines
Deal found 3/4$247
This Delta deal was found by Cheapflights users on 3/3. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 4/275:40 amSFO - ORD
1 stop8h 30mDelta
mar. 4/298:50 amORD - SFO
1 stop6h 28mDelta
Deal found 3/3$267
This Southwest deal was found by Cheapflights users on 3/5. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/265:40 amSFO - ORD
2 stops9h 05mSouthwest
mar. 4/112:40 pmORD - SFO
1 stop8h 50mSouthwest
Deal found 3/5$282
This Sun Country Air deal was found by Cheapflights users on 3/5. 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 Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/186:18 pmSFO - ORD
1 stop15h 14mSun Country Air
lun. 9/2211:49 amORD - SFO
1 stop7h 29mSun Country Air
Deal found 3/5$295

Find flights from San Francisco to O'Hare Intl within your budget

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 marzo 5, 2025.

Fly from

San Francisco

Fly to

O'Hare Intl

Route

Depart

Return

Price

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

jue. 4/17

12:08 am-11:17 am

1 stop9h 09m

Chicago O'Hare Intl

vie. 4/25

5:23 pm-12:33 am

1 stop9h 10m

$203

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

dom. 3/23

12:15 am-2:16 pm

1 stop12h 01m

Chicago O'Hare Intl

mié. 3/26

6:56 pm-9:55 pm

Nonstop4h 59m

$204

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mar. 4/22

11:48 am-6:20 pm

Nonstop4h 32m

Chicago O'Hare Intl

jue. 5/1

6:58 pm-9:57 pm

Nonstop4h 59m

$207

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

jue. 4/10

12:08 am-6:30 am

Nonstop4h 22m

Chicago O'Hare Intl

vie. 4/18

7:52 pm-10:55 pm

Nonstop5h 03m

$217

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mar. 4/8

12:47 am-9:27 am

1 stop6h 40m

Chicago O'Hare Intl

mar. 4/15

10:34 am-1:23 pm

Nonstop4h 49m

$218

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

sáb. 4/19

11:52 am-6:16 pm

Nonstop4h 24m

Chicago O'Hare Intl

lun. 4/21

6:56 pm-9:55 pm

Nonstop4h 59m

$247

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mié. 4/16

12:40 am-11:29 am

1 stop8h 49m

Chicago O'Hare Intl

lun. 4/21

6:59 pm-11:59 pm

1 stop7h 00m

$257

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mié. 3/26

5:40 am-4:45 pm

2 stops9h 05m

Chicago O'Hare Intl

mié. 4/2

6:15 am-1:00 pm

1 stop8h 45m

$282

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mar. 4/22

12:08 am-6:30 am

Nonstop4h 22m

$99

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

lun. 3/31

11:52 pm-4:51 pm

1 stop14h 59m

$100

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Showing 1-10 of 17 results
1
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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 March.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*3 stars
Kiwi.comPrice Accuracy3 starsTrust Score*2 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
CheapOairPrice Accuracy1 starTrust Score*3 stars
JetabroadPrice Accuracy3 starsTrust Score*3 stars

*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.

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

Find out what our experts recommend to make the most of your San Francisco to Chicago O'Hare Intl Airport trip
Airlines
United Airlines

Basic Economy allows a personal item only; no carry-on bags unless exceptions apply.


Economy Plus offers extra legroom seats towards the front of the economy cabin.

Read more about United Airlinesby Harriet Baskas
Alaska Airlines

Saver Fare allows a carry-on bag onboard, unlike many basic economy products.


Alaska's Wi-Fi is a flat fee, making it a bargain for longer flights.

Read more about Alaska Airlinesby Robert Schrader
Airports
SFO

For a quick departure, use the AirTrain Red Line to navigate between terminals and security checkpoints efficiently.

Read more about SFOby Harriet Baskas
ORD

Take the 'L' train from ORD to downtown Chicago for a reliable and cost-effective transportation option.

Read more about ORDby Ramsey Qubein
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on United Airlines and SFO

Harriet Baskas

Harriet Baskas

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

Robert Schrader

Robert Schrader

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

Ramsey Qubein

Ramsey Qubein

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

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.

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.

Travel insights for flights from San Francisco to O'Hare Intl

Get recent, data-driven insights about flights from San Francisco to O'Hare Intl including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to O'Hare Intl. Price data was last updated on February 28, 2025.

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 77 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, August is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $245). Flying from San Francisco to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $326). 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 marzo 5, 2025.

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 21% 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 March 2, 2025.

Travelers seeking maximum savings on their San Francisco to Chicago O'Hare Intl Airport flight should consider departing on Wednesday afternoons 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.

Rainfall in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Chicago O'Hare Intl Airport ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 1.7 in.

Temperature in O'Hare Intl by month

Plan your trip to O'Hare Intl by taking into account the average temperature totals by month.

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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 marzo 5, 2025.
Read through reviews of airlines operating flights from San Francisco to Chicago, such as Southwest, Alaska Airlines and Delta. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Southwest
8.1
Very good
4,321 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Alaska Airlines
8.0
Very good
9,711 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Delta
8.0
Very good
8,044 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

Hawaiian Airlines
7.9
Good
2,318 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

United Airlines
7.4
Good
8,655 reviews
Southwest
8.1
Very good
4,321 reviews

Comfort

8.1

Boarding

8.2

Crew

8.7

Entertainment

7.6

Food

7.1

Overall

8.1

Reviews

1 / 20

10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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 11.8 mi from the center of San Francisco. There are 17 flights from San Francisco to Chicago O'Hare Intl per day from 6 different airlines.

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

    According to our current data, Frontier ($203), Alaska Airlines ($207), and American Airlines ($217) offers the cheapest pricing from San Francisco to Chicago O'Hare Intl Airport. Frontier is priced at 47% 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 Alaska Airlines ($99), Frontier ($100), and United Airlines ($109).

  • 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: Asiana Airlines (94%), Brussels Airlines (93%), Royal Jordanian( 93%).

  • 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 $103. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $168 on average our data indicates $860 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, August is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $245). Flying from San Francisco to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $326). 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

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Alternative routes for San Francisco to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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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 marzo 5, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$112Average$226FlexibilityNo cancel feeOn-time65%
FrontierCheapest$125Average$205FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$178Average$345FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$207Average$394FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$212Average$443FlexibilityNo cancel feeOn-time69%
DeltaCheapest$236Average$288FlexibilityNo cancel feeOn-timeN/A
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