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$101+ Cheap flights from O'Hare Intl (ORD) to San Francisco (SFO)

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 10/17. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — SFO
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Chicago O'Hare Intl to San Francisco are usually found in April or May, booked 89 days in advance, depart on a Thursday or Friday and return on a Wednesday

Cheap flight deals from O'Hare Intl to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from O'Hare Intl (ORD) to San Francisco (SFO). 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 septiembre 15, 2025.

Round-trip from

$208
(Kiwi.com)

One-way from

$101
(Cheapflightsfares)

Popular in

March

Cheapest in

April

Average price

$307

Good round-trip deal

$298 or less

Good one-way deal

$159 or less
From Chicago O'Hare Intl to San Francisco
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One-way flight from Chicago O'Hare Intl to San Francisco
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Highest demand for flights based on searches. 2% potential increase in price ($8 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Chicago O'Hare Intl to San Francisco.
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Price to beat on a one-way flight from Chicago O'Hare Intl to San Francisco.
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Find flight deals from O'Hare Intl to San Francisco

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 septiembre 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
mar. 10/218:20 amORD - SFO
1 stop7h 41mMultiple Airlines
dom. 10/268:21 pmSFO - ORD
1 stop11h 15mMultiple Airlines
Deal found 9/15$208
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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.
lun. 9/229:54 pmORD - SFO
1 stop25h 27mFrontier
jue. 9/2510:37 pmSFO - ORD
1 stop20h 22mFrontier
Deal found 9/15$210
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
lun. 10/205:25 amORD - SFO
1 stop12h 35mMultiple Airlines
mié. 10/228:00 amSFO - ORD
1 stop10h 48mMultiple Airlines
Deal found 9/15$211
This Frontier deal was found by Cheapflights users on 9/14. 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.
jue. 10/22:07 pmORD - SFO
1 stop7h 01mFrontier
jue. 10/910:25 pmSFO - ORD
1 stop12h 33mFrontier
Deal found 9/14$213
This Frontier deal was found by Cheapflights users on 9/13. 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.
dom. 10/195:25 amORD - SFO
1 stop12h 35mFrontier
vie. 10/2410:23 pmSFO - ORD
1 stop11h 12mFrontier
Deal found 9/13$214
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
mié. 10/111:15 amORD - SFO
1 stop12h 06mMultiple Airlines
lun. 10/611:00 pmSFO - ORD
1 stop12h 47mMultiple Airlines
Deal found 9/13$215
This Frontier deal was found by Cheapflights users on 9/14. 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.
jue. 11/136:00 amORD - SFO
2 stops10h 09mFrontier
lun. 11/173:35 pmSFO - ORD
1 stop6h 40mFrontier
Deal found 9/14$216
This Kiwi.com deal was found by Cheapflights users on 9/13. 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.
mar. 10/147:15 amORD - SFO
1 stop17h 12mFrontier
jue. 10/1610:25 pmSFO - ORD
1 stop12h 33mFrontier
Deal found 9/13$217
This Alaska Airlines deal was found by Cheapflights users on 9/15. 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. 10/218:20 amORD - SFO
1 stop7h 41mAlaska Airlines
mié. 10/2210:26 amSFO - ORD
1 stop11h 33mAlaska Airlines
Deal found 9/15$218
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/186:00 amORD - SFO
1 stop17h 23mFrontier
mar. 10/218:00 amSFO - ORD
2 stops30h 40mFrontier
Deal found 9/14$219
This CheapOair deal was found by Cheapflights users on 9/14. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/256:21 pmORD - SFO
1 stop29h 00mFrontier
jue. 10/211:57 pmSFO - ORD
1 stop22h 01mFrontier
Deal found 9/14$220
This Frontier deal was found by Cheapflights users on 9/12. 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.
jue. 10/235:25 amORD - SFO
1 stop12h 35mFrontier
vie. 10/2410:17 pmSFO - ORD
2 stops10h 48mFrontier
Deal found 9/12$221

Cheapflights Fare Finder

 
Customize your flight search to find flights from O'Hare Intl to San Francisco 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 septiembre 15, 2025.
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

O'Hare Intl

Fly to

San Francisco

Route

Depart

Return

Price

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

vie. 12/12

9:15 am-9:46 pm

1 stop14h 31m

San Francisco

lun. 12/15

9:57 pm-2:09 pm

1 stop14h 12m

$241

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

mié. 10/8

6:05 pm-11:33 pm

1 stop7h 28m

San Francisco

sáb. 10/11

12:35 am-8:30 am

1 stop5h 55m

$241

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

mié. 10/22

9:13 pm-11:59 pm

Nonstop4h 46m

San Francisco

mar. 10/28

11:44 pm-6:02 am

Nonstop4h 18m

$255

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

jue. 12/11

9:15 am-9:46 pm

1 stop14h 31m

San Francisco

dom. 12/14

7:00 am-6:54 pm

1 stop9h 54m

$263

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

vie. 12/5

3:05 pm-8:06 am

1 stop19h 01m

San Francisco

dom. 12/7

7:00 am-11:50 pm

1 stop14h 50m

$263

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

sáb. 10/18

7:00 am-12:23 pm

1 stop7h 23m

San Francisco

mar. 10/28

7:00 am-6:59 pm

1 stop9h 59m

$270

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

sáb. 10/25

10:35 am-1:21 pm

Nonstop4h 46m

San Francisco

mié. 10/29

5:10 am-11:30 am

Nonstop4h 20m

$287

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

mié. 10/29

11:02 am-5:24 pm

1 stop8h 22m

San Francisco

jue. 10/30

12:35 am-9:03 am

1 stop6h 28m

$297

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

mar. 12/2

2:14 pm-10:31 pm

1 stop10h 17m

San Francisco

dom. 12/7

6:00 am-2:59 pm

1 stop6h 59m

$297

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

mar. 10/28

4:56 pm-10:35 pm

1 stop7h 39m

San Francisco

vie. 10/31

12:35 am-11:28 am

1 stop8h 53m

$297

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/14

Showing 1-10 of 23 results
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The best insider tips for Chicago O'Hare Intl Airport to San Francisco flights

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.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago O'Hare Intl Airport to San Francisco trip
Airlines
United Airlines

United's Economy Plus offers extra legroom, enhancing comfort for travelers seeking more space.


United's Polaris Lounges provide exclusive amenities like showers and dining for premium passengers.

Read more about United Airlinesby Harriet Baskas
Alaska Airlines

Alaska's Premium Class offers extra legroom and free cocktails, enhancing comfort on medium-haul flights.


Alaska's Wi-Fi is a flat fee, ideal for business travelers needing connectivity during flights.

Read more about Alaska Airlinesby Robert Schrader
Airports
ORD

For a quick snack before your flight, grab some Garrett Popcorn near gate B8, a Chicago favorite.

Read more about ORDby Ramsey Qubein
SFO

Use BART for an affordable ride from SFO to downtown San Francisco, taking about 40 minutes.

Read more about SFOby Harriet Baskas
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

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.
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

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

Use this chart to determine the optimal time to book a round-trip flight from O'Hare Intl to San Francisco. Price data was last updated on September 12, 2025.

The price you pay for your flight from Chicago O'Hare Intl Airport to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 89 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 Chicago O'Hare Intl Airport to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Francisco (average of $276). Flying from Chicago O'Hare Intl Airport to San Francisco in June is currently the most expensive (average of $357). 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?

Find hourly flight availability from O'Hare Intl to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 15, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 19% on flights from Chicago O'Hare Intl Airport to San Francisco by exploring options for tickets in the evening.

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

Use this chart to determine the cheapest time to fly round-trip from O'Hare Intl to San Francisco. Price data was last updated on September 14, 2025.

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

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated septiembre 15, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and United Airlines from Chicago O'Hare Intl Airport to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Delta
8.0
Very good
7,954 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
United Airlines
7.4
Good
8,929 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.
Frontier
5.8
Fair
3,172 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.0

Boarding

8.1

Crew

8.5

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
6.0
Good

Hannah,Aug 2025

SFO - SAN

Ticket said TSA pre check, but then the TSA agent said that Alaska Airlines has not actually entered the pre check information for the ticket, so I had to use regular security. During boarding, I have a disability and need to board early. The Alaska Airlines employee announced disability boarding, but then immediately announced 2 other groups to board, so I still had to fight the crowds. On the plane, the stewardess was brusk and rude. Seats were very uncomfortable, especially on lower back.

Related info for your journey

Find useful and relevant information for your journey from O'Hare Intl to San Francisco. 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 into for flights to San Francisco from Chicago O'Hare Intl?

    Located just 11.8 mi from the city center, San Francisco is the airport most travelers will use when flying to San Francisco from Chicago O'Hare Intl. Booking flights from Chicago O'Hare Intl to San Francisco (SFO) should be relatively easy as there are 70 daily inbound flights from Chicago O'Hare Intl from 8 different airlines.

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

    Departing from Chicago O'Hare Intl Airport to San Francisco will take you 4h 46m. Airlines will cover a distance of 1841 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    Currently priced at $108, Hawaiian Airlines will fly you from Chicago O'Hare Intl Airport to San Francisco and back. In addition to Hawaiian Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from Sun Country Air and Frontier - these airlines can fly you to your destination from $112 and $123, respectively. Users have found that Hawaiian Airlines is 65% cheaper than the other options available to this destination.

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

    Consider Air China (79%), ANA (79%) or Austrian Airlines (75%) when booking your flight. These represent the most reliable airlines when flying from Chicago O'Hare Intl Airport to San Francisco.

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

    Looking at all options, your cheapest flight can be booked for $89. While the most popular route (Chicago O'Hare Intl - San Francisco) can be booked for $153 on average, our data indicates $924 when flying 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?

    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, January is the cheapest month in which you can book a flight from Chicago O'Hare Intl Airport to San Francisco (average of $276). Flying from Chicago O'Hare Intl Airport to San Francisco in June is currently the most expensive (average of $357). 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 San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Roseville
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Santa Clara
Manteca
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Hollister
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Foster City
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San Mateo
San Leandro
Lathrop

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Alternative routes for O'Hare Intl to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from O'Hare Intl to San Francisco

Discover the top 8 airlines that operate flights from O'Hare Intl to San Francisco. 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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Hawaiian AirlinesCheapest$108Average$217FlexibilityNo cancel feeOn-time85%
Sun Country AirCheapest$112Average$335FlexibilityNo cancel feeOn-time83%
FrontierCheapest$123Average$225FlexibilityNo cancel feeOn-time62%
DeltaCheapest$128Average$320FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$180Average$306FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$188Average$286FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$197Average$304FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$204Average$366FlexibilityNo cancel feeOn-time69%

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