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.
$109+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
Nov 15 — Nov 221
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.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 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 October 16, 2025.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $249 (Alaska Airlines) |
One-way from | $109 (Kiwi.com) |
Popular in | November |
Cheapest in | January |
Average price | $418 |
Good round-trip deal | $378 or less |
Good one-way deal | $194 or less |
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 October 16, 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 October 16, 2025.
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/2710:43 pmSFO - ORD
2 stops23h 29mMultiple Airlines
Thu 10/306:35 amORD - SFO
1 stop8h 25mMultiple Airlines
Deal found 10/14![Multiple Airlines logo]()
$242
This Alaska Airlines deal was found by Cheapflights users on 10/13. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/77:00 amSFO - ORD
1 stop10h 54mAlaska Airlines
Thu 12/118:55 amORD - SFO
1 stop16h 53mAlaska Airlines
Deal found 10/13![Alaska Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Thu 11/272:54 pmSFO - ORD
1 stop7h 16mFrontier
Thu 12/47:39 pmORD - SFO
1 stop6h 46mFrontier
Deal found 10/13![Frontier logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 10/13. 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.
Thu 11/61:10 pmSFO - ORD
1 stop9h 49mMultiple Airlines
Mon 11/1010:43 pmORD - SFO
2 stops23h 27mMultiple Airlines
Deal found 10/13![Multiple Airlines logo]()
$246
This Kiwi.com deal was found by Cheapflights users on 10/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/298:00 amSFO - ORD
1 stop9h 34mMultiple Airlines
Mon 11/36:00 amORD - SFO
2 stops12h 43mMultiple Airlines
Deal found 10/14![Multiple Airlines logo]()
$247
This Alaska Airlines deal was found by Cheapflights users on 10/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/59:51 amSFO - ORD
2 stops12h 08mAlaska Airlines
Sat 11/82:54 pmORD - SFO
1 stop9h 01mAlaska Airlines
Deal found 10/14![Alaska Airlines logo]()
$248
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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.
Mon 12/159:57 pmSFO - ORD
1 stop19h 57mAlaska Airlines
Thu 12/188:58 pmORD - SFO
1 stop13h 17mAlaska Airlines
Deal found 10/15![Alaska Airlines logo]()
$249
This Alaska Airlines deal was found by Cheapflights users on 10/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/52:21 pmSFO - ORD
1 stop7h 38mAlaska Airlines
Tue 12/98:59 pmORD - SFO
1 stop13h 07mAlaska Airlines
Deal found 10/14![Alaska Airlines logo]()
$250
This Expedia deal was found by Cheapflights users on 10/15. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/29:25 amSFO - ORD
2 stops11h 05mMultiple Airlines
Sat 12/67:39 pmORD - SFO
1 stop6h 46mMultiple Airlines
Deal found 10/15![Multiple Airlines logo]()
$251
This Alaska Airlines deal was found by Cheapflights users on 10/15. 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.
Tue 11/47:52 pmSFO - ORD
1 stop16h 02mAlaska Airlines
Fri 11/149:20 amORD - SFO
1 stop14h 41mAlaska Airlines
Deal found 10/15![Alaska Airlines logo]()
$252
This Kiwi.com deal was found by Cheapflights users on 10/15. 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.
Thu 10/2310:25 pmSFO - ORD
1 stop12h 33mFrontier
Fri 10/316:30 amORD - SFO
1 stop10h 59mFrontier
Deal found 10/15![Frontier logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 10/16. 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.
Thu 11/610:23 pmSFO - ORD
1 stop10h 18mMultiple Airlines
Fri 11/72:54 pmORD - SFO
1 stop9h 24mMultiple Airlines
Deal found 10/16![Multiple Airlines logo]()
$254
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 October 16, 2025.
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
San Francisco
Fly to
O'Hare Intl
Route
Depart
Return
Price
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Tue 12/30
12:10 am-9:25 am
1 stop7h 15m
Chicago O'Hare Intl
Tue 1/6
7:30 am-1:17 pm
1 stop7h 47m
$258
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sat 11/15
1:58 pm-11:59 pm
1 stop8h 01m
Chicago O'Hare Intl
Mon 11/24
7:40 pm-11:55 pm
1 stop6h 15m
$260
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Thu 12/11
10:30 am-9:21 pm
2 stops8h 51m
Chicago O'Hare Intl
Mon 12/15
7:50 am-3:57 pm
1 stop10h 07m
$268
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Thu 12/11
1:58 pm-11:59 pm
1 stop8h 01m
Chicago O'Hare Intl
Tue 12/16
7:20 am-3:57 pm
2 stops10h 37m
$268
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Tue 12/16
7:00 am-11:50 pm
1 stop14h 50m
Chicago O'Hare Intl
Mon 12/22
8:58 pm-8:15 am
1 stop13h 17m
$270
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sat 11/8
10:35 am-9:43 pm
2 stops9h 08m
Chicago O'Hare Intl
Tue 11/11
2:12 pm-10:25 pm
1 stop10h 13m
$278
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sat 11/15
11:44 pm-6:02 am
Nonstop4h 18m
Chicago O'Hare Intl
Tue 11/18
6:15 am-9:04 am
Nonstop4h 49m
$288
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Wed 11/12
2:45 pm-9:02 pm
Nonstop4h 17m
Chicago O'Hare Intl
Wed 11/19
5:16 pm-8:08 pm
Nonstop4h 52m
$288
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Mon 11/3
12:35 am-8:30 am
1 stop5h 55m
Chicago O'Hare Intl
Thu 11/6
6:00 pm-11:33 pm
1 stop7h 33m
$291
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sun 12/14
5:50 am-5:15 pm
1 stop9h 25m
Chicago O'Hare Intl
Thu 12/18
8:50 am-1:33 pm
1 stop6h 43m
$293
Showing 1-10 of 23 results
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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- 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
Prices
Airlines
Delays
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 October 10, 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 67 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, December is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of $110). Flying from San Francisco to Chicago O'Hare Intl Airport in March is currently the most expensive (average of $194). 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 October 16, 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 12% 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 October 12, 2025.
Travelers seeking maximum savings on their San Francisco to Chicago O'Hare Intl Airport flight should consider departing on Saturday 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.
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 186 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 early afternoon 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 last year, ITA Airways have had the lowest number of delays on this route, with no flights being classified as delayed.
The best insider tips for San Francisco to Chicago O'Hare Intl Airport 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 San Francisco to Chicago O'Hare Intl Airport trip
Airlines
![United Airlines]()
United Airlines
![Alaska Airlines]()
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.
Airports
Our travel experts
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 October 16, 2025.
See what other customers who have flown with Alaska Airlines, Hawaiian Airlines, and United Airlines 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.
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
8.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
8.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
8.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
8.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
8.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
Entertainment
7.0
Food
7.1
Boarding
8.1
Crew
8.5
Comfort
7.8
Overall
8.0
Reviews
1 / 20
6.0
GoodHannah,Aug 2025
SFO - SAN
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.
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 locationsSchaumburg
Rosemont
Skokie
Des Plaines
Gurnee
Hoffman Estates
Elgin
Racine
Oak Brook
Elk Grove Village
Beloit
Rockford
Naperville
Downers Grove
Orland Park
Merrillville
Bridgeview
Warrenville
Joliet
Waukegan
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for San Francisco to O'Hare Intl
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from San Francisco to O'Hare Intl
Discover the top 7 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 October 16, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$288 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$128 | Average$228 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$288 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$185 | Average$276 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$196 | Average$350 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$197 | Average$354 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$207 | Average$411 | FlexibilityNo cancel fee | On-time69% |