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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from £75

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 18/11. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
23 Jul — 30 Jul1
1 adult

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 Monday or Wednesday and return on a Friday

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 18 July 2025.

Round-trip from

£154

One-way from

£75

Popular in

December

Cheapest in

January

Average price

£281

Good one-way deal

£151 or less
United Airlines
  • United Airlines
  • 20/8-24/8
  • Nonstop
  • 9h 12m total
  • San Francisco to Chicago
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Hawaiian Airlines
  • Hawaiian Airlines
  • 18/11
  • 1 total stop
  • 9h 59m total
  • San Francisco to Chicago
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Highest demand for flights based on searches. 8% potential increase in price (£18 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£5 potential savings vs. average return price).
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Average for round-trip flights in July 2025
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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 18 July 2025.

Wed 20/805:15SFO - ORD
Nonstop4h 31mUnited Airlines
Sun 24/806:15ORD - SFO
Nonstop4h 41mUnited Airlines
Deal found 17/7£154
Wed 27/812:20SFO - ORD
1 stop8h 45mSouthwest
Sun 31/807:30ORD - SFO
1 stop6h 25mSouthwest
Deal found 16/7£155
Fri 26/920:19SFO - ORD
1 stop8h 44mHawaiian Airlines
Sat 27/910:00ORD - SFO
1 stop10h 09mHawaiian Airlines
Deal found 16/7£160
Wed 8/1010:26SFO - ORD
1 stop11h 33mAlaska Airlines
Tue 14/1008:20ORD - SFO
1 stop7h 41mAlaska Airlines
Deal found 16/7£161
Sat 16/806:00SFO - ORD
1 stop7h 02mDelta
Fri 22/807:15ORD - SFO
1 stop7h 36mDelta
Deal found 18/7£192
Sun 10/823:59SFO - ORD
1 stop15h 28mSun Country Air
Thu 28/815:37ORD - SFO
1 stop9h 14mSun Country Air
Deal found 17/7£193

Cheapflights Fare Finder

Customise 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 858,174 searches. Data last updated 18 July 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

Wed 20/8

05:15-11:46

Nonstop4h 31m

Chicago O'Hare Intl

Sun 24/8

06:15-08:56

Nonstop4h 41m

£154

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 27/8

12:20-23:05

1 stop8h 45m

Chicago O'Hare Intl

Sun 31/8

07:30-11:55

1 stop6h 25m

£155

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 26/9

20:19-07:03

1 stop8h 44m

Chicago O'Hare Intl

Sat 27/9

10:00-18:09

1 stop10h 09m

£160

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 8/10

10:26-23:59

1 stop11h 33m

Chicago O'Hare Intl

Tue 14/10

08:20-14:01

1 stop7h 41m

£161

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 16/8

11:35-21:36

1 stop8h 01m

Chicago O'Hare Intl

Sat 23/8

07:15-12:51

1 stop7h 36m

£192

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sun 10/8

23:59-17:27

1 stop15h 28m

Chicago O'Hare Intl

Thu 28/8

15:37-22:51

1 stop9h 14m

£193

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 18/11

07:00-18:59

1 stop9h 59m

£75

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 9/12

12:30-23:10

1 stop8h 40m

£76

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 30/8

05:00-17:55

1 stop10h 55m

£78

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 26/8

00:35-08:24

1 stop5h 49m

£96

Flights are sorted by cheapest return flights first.

Deals found on 18/7

Showing 1-10 of 12 results
1
2

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 return 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 return flight from San Francisco to O'Hare Intl. Price data was last updated on 11 July 2025.

The best time to book flights from San Francisco to Chicago O'Hare Intl Airport is 67 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco to Chicago O'Hare Intl Airport?

Currently, January is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of £595). Flying from San Francisco to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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 18 July 2025.

When flying from San Francisco to Chicago O'Hare Intl Airport, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 47% versus a flight in the morning.

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 18 July 2025.

The most flights from SFO to ORD are scheduled on a Thursday (91 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (61 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 18 July 2025.
Read reviews from past customers who have flown with Alaska Airlines, Southwest, andDelta from San Francisco to Chicago O'Hare Intl Airport. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very Good
10,000 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very Good
4,238 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very Good
7,958 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,583 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,865 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

Crew

8.5

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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?

    Most people fly from San Francisco (SFO) if they book a flight from San Francisco to Chicago O'Hare Intl. On average, San Francisco has 74 outbound flights to Chicago O'Hare Intl per day from 0 airlines. San Francisco is conveniently located just 11.8 mi from San Francisco’s city center.

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

    United Airlines, at £154, was found to be the cheapest airline from San Francisco to Chicago O'Hare Intl Airport.Alternate airlines flying return to your destination include Southwest and Hawaiian Airlines. United Airlines is currently priced 43% below the average price you’ll pay for this route.

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

    To fly one-way, consider booking your trip with Hawaiian Airlines, which is currently one of the cheapest options available, starting at £75. Alaska Airlines flights start at £76 while deals on Southwest start at £78 one-way.

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

    The top 3 most reliable airlines when flying from San Francisco to Chicago O'Hare Intl Airport are Fiji Airways (100%), Asiana Airlines (88%) and China Southern (82%).

  • 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 £148. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for £185 on average our data indicates £174 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 holiday 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, January is the cheapest month in which you can book a flight from San Francisco to Chicago O'Hare Intl Airport (average of £595). Flying from San Francisco to Chicago O'Hare Intl Airport in July is currently the most expensive (average of £843). 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

Travelling 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
Downers Grove
Elk Grove Village
Rosemont

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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.
Los Angeles to O'Hare Intl flights

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Deals for San Francisco to O'Hare Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

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Can Cheapflights find flights from San Francisco to O'Hare Intl with no change fees?

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