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.
$105+ 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 8/20. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
Jul 8 — Jul 151
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 July 3, 2025.
Round-trip from | $207 (American Airlines) |
|---|---|
One-way from | $105 (FlightHub) |
Popular in | December |
Cheapest in | January |
Average price | $377 |
Good round-trip deal | $294 or less |
Good one-way deal | $150 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 July 3, 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 July 3, 2025.
This American Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 9/1612:47 amSFO - ORD
Nonstop4h 09mAmerican Airlines
Mon 9/226:45 amORD - SFO
Nonstop4h 39mAmerican Airlines
Deal found 7/2![American Airlines logo]()
$207
This Cheapflightsfares deal was found by Cheapflights users on 7/3. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/276:52 pmSFO - ORD
1 stop24h 14mFrontier
Wed 8/67:00 amORD - SFO
1 stop18h 25mFrontier
Deal found 7/3![Frontier logo]()
$208
This Alaska Airlines deal was found by Cheapflights users on 7/2. 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 8/1811:55 amSFO - ORD
Nonstop4h 23mAlaska Airlines
Mon 8/187:18 pmORD - SFO
Nonstop4h 48mAlaska Airlines
Deal found 7/2![Alaska Airlines logo]()
$211
This Priceline deal was found by Cheapflights users on 7/3. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/310:33 amSFO - ORD
1 stop8h 33mMultiple Airlines
Fri 8/156:15 pmORD - SFO
1 stop6h 38mMultiple Airlines
Deal found 7/3![Multiple Airlines logo]()
$212
This Southwest deal was found by Cheapflights users on 7/3. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/236:50 amSFO - ORD
2 stops13h 10mSouthwest
Sat 8/303:10 pmORD - SFO
1 stop7h 15mSouthwest
Deal found 7/3![Southwest logo]()
$213
This Hawaiian Airlines deal was found by Cheapflights users on 7/2. 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.
Tue 8/1211:55 amSFO - ORD
Nonstop4h 23mHawaiian Airlines
Fri 8/155:55 pmORD - SFO
1 stop8h 04mHawaiian Airlines
Deal found 7/2![Hawaiian Airlines logo]()
$217
This United Airlines deal was found by Cheapflights users on 7/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2411:25 pmSFO - ORD
Nonstop4h 14mUnited Airlines
Mon 7/289:40 pmORD - SFO
Nonstop4h 50mUnited Airlines
Deal found 7/1![United Airlines logo]()
$246
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 July 3, 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 9/16
12:47 am-6:56 am
Nonstop4h 09m
Chicago O'Hare Intl
Mon 9/22
6:45 am-9:24 am
Nonstop4h 39m
$207
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sun 7/27
6:52 pm-9:06 pm
1 stop24h 14m
Chicago O'Hare Intl
Wed 8/6
7:00 am-11:25 pm
1 stop18h 25m
$208
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Mon 8/18
11:55 am-6:18 pm
Nonstop4h 23m
Chicago O'Hare Intl
Mon 8/18
7:18 pm-10:06 pm
Nonstop4h 48m
$211
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sun 8/3
10:33 am-9:06 pm
1 stop8h 33m
Chicago O'Hare Intl
Fri 8/15
6:15 pm-10:53 pm
1 stop6h 38m
$212
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Sat 8/23
6:50 am-10:00 pm
2 stops13h 10m
Chicago O'Hare Intl
Sat 8/30
3:10 pm-8:25 pm
1 stop7h 15m
$213
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Tue 8/12
11:55 am-6:18 pm
Nonstop4h 23m
Chicago O'Hare Intl
Fri 8/15
5:55 pm-11:59 pm
1 stop8h 04m
$217
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Thu 7/24
11:25 pm-5:39 am
Nonstop4h 14m
Chicago O'Hare Intl
Mon 7/28
9:40 pm-12:30 am
Nonstop4h 50m
$246
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Wed 8/20
6:50 am-9:42 pm
1 stop12h 52m
$105
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Thu 12/25
12:59 am-7:26 am
Nonstop4h 27m
$109
San FranciscoChicago
SFO - ORD
SFOORD
San Francisco
Mon 8/4
11:20 am-5:25 am
1 stop16h 05m
$110
Showing 1-10 of 16 results
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
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?
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 June 27, 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, 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 $321). 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 July 3, 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 evening could potentially save you up to 14% 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 June 29, 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.
Weekly flight availability from San Francisco to Chicago O'Hare Intl Airport
Explore weekly flight availability from San Francisco to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated July 3, 2025.
The most flights from SFO to ORD are scheduled on a Wednesday (90 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (30 on average).
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 July 3, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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.
Overall
8.0
Crew
8.5
Entertainment
7.1
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Entertainment
7.1
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Entertainment
7.1
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Entertainment
7.1
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Entertainment
7.1
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
Overall
8.0
Crew
8.5
Entertainment
7.1
Boarding
8.1
Food
7.1
Comfort
7.8
Reviews
1 / 20
10.0
ExcellentJames,Apr 2025
LAX - SFO
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 San Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSchaumburg
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Browse thousands of different options on Cheapflights for your next trip
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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.
Top 8 airlines flying from San Francisco to O'Hare Intl
Discover the top 8 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 July 3, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$108 | Average$284 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$126 | Average$207 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$128 | Average$288 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$143 | Average$226 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$172 | Average$332 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$198 | Average$357 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$198 | Average$307 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$203 | Average$416 | FlexibilityNo cancel fee | On-time69% |