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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $163

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 5/7. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
28 May — 4 Jun1
1 adult

Cheapflights Tip: The best prices from San Francisco to Chicago O'Hare Intl are usually found in January or April, booked 77 days in advance, depart on a Tuesday or Monday 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 23 May 2025.

Round-trip from

$322

One-way from

$163

Popular in

December

Cheapest in

January

Average price

$577

Good one-way deal

$170 or less
Alaska Airlines
  • Alaska Airlines
  • 8/7-9/7
  • Nonstop
  • 9h 11m total
  • San Francisco to Chicago
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Southwest
  • Southwest
  • 5/7
  • 1 total stop
  • 9h 30m total
  • San Francisco to Chicago
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Highest demand for flights based on searches. 7% potential increase in price ($72 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease ($19 potential savings vs. average return price).
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Average for round-trip flights in May 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 23 May 2025.

Tue 8/711:55SFO - ORD
Nonstop4h 23mAlaska Airlines
Thu 10/719:18ORD - SFO
Nonstop4h 48mAlaska Airlines
Deal found 22/5$322
Wed 25/611:55SFO - ORD
Nonstop4h 23mHawaiian Airlines
Fri 4/719:18ORD - SFO
Nonstop4h 48mHawaiian Airlines
Deal found 23/5$355
Fri 25/723:55SFO - ORD
Nonstop4h 20mUnited Airlines
Sat 2/808:50ORD - SFO
Nonstop4h 39mUnited Airlines
Deal found 23/5$377
Tue 1/720:53SFO - ORD
1 stop11h 24mMultiple Airlines
Fri 4/719:18ORD - SFO
Nonstop4h 48mMultiple Airlines
Deal found 22/5$381
Tue 1/706:37SFO - ORD
1 stop15h 06mFrontier
Fri 4/705:40ORD - SFO
1 stop20h 44mFrontier
Deal found 22/5$392
Tue 1/723:55SFO - ORD
Nonstop4h 15mAmerican Airlines
Fri 4/715:19ORD - SFO
Nonstop4h 38mAmerican Airlines
Deal found 22/5$397
Mon 7/721:35SFO - ORD
1 stop9h 05mDelta
Mon 14/718:15ORD - SFO
1 stop8h 04mDelta
Deal found 23/5$400
Mon 21/723:59SFO - ORD
1 stop8h 46mSun Country Air
Sun 27/718:15ORD - SFO
1 stop15h 50mSun Country Air
Deal found 22/5$412
Sat 12/706:25SFO - ORD
1 stop9h 30mSouthwest
Wed 16/712:40ORD - SFO
2 stops11h 25mSouthwest
Deal found 22/5$551

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 647,157 searches. Data last updated 23 May 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 8/7

11:55-18:18

Nonstop4h 23m

Chicago O'Hare Intl

Wed 6/8

19:18-22:06

Nonstop4h 48m

$322

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 25/6

11:55-18:18

Nonstop4h 23m

Chicago O'Hare Intl

Fri 4/7

19:18-22:06

Nonstop4h 48m

$355

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 25/7

23:55-06:15

Nonstop4h 20m

Chicago O'Hare Intl

Sat 2/8

08:50-11:29

Nonstop4h 39m

$377

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 1/7

20:53-10:17

1 stop11h 24m

Chicago O'Hare Intl

Fri 4/7

19:18-22:06

Nonstop4h 48m

$381

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 1/7

06:37-23:43

1 stop15h 06m

Chicago O'Hare Intl

Fri 4/7

05:40-00:24

1 stop20h 44m

$392

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 1/7

23:55-06:10

Nonstop4h 15m

Chicago O'Hare Intl

Fri 4/7

15:19-17:57

Nonstop4h 38m

$397

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 7/7

21:35-08:40

1 stop9h 05m

Chicago O'Hare Intl

Mon 14/7

18:15-00:19

1 stop8h 04m

$400

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 21/7

23:59-10:45

1 stop8h 46m

Chicago O'Hare Intl

Tue 29/7

12:08-17:05

1 stop6h 57m

$412

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 12/7

06:25-17:55

1 stop9h 30m

Chicago O'Hare Intl

Wed 16/7

12:40-22:05

2 stops11h 25m

$551

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 5/7

06:25-17:55

1 stop9h 30m

$163

Flights are sorted by cheapest return flights first.

Deals found on 23/5

Showing 1-10 of 16 results
1
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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 16 May 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 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 23 May 2025.

It’s typically best to fly out from San Francisco to Chicago O'Hare Intl Airport at midday. Doing so could potentially save you 15% on the flight price compared to flying in the morning, which is usually more expensive.

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 23 May 2025.

The most flights from SFO to ORD are scheduled on a Thursday (90 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).

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 43.0 - 125.0 inches per month. August is typically the wettest month, when rainfall can reach 125.0 mm. January is typically the driest time to visit Chicago O'Hare Intl Airport when rainfall is around 43.0 mm.

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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -5.0 C).

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 23 May 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from San Francisco to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

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

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

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
4,291 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

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
7,950 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,450 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

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
8,746 reviews
Alaska Airlines
8.0
Very Good
10,000 reviews
Check prices

Boarding

8.1

Crew

8.5

Comfort

7.9

Food

7.1

Entertainment

7.1

Overall

8.0

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?

    San Francisco (SFO) is the airport you will fly out of if you book a flight from San Francisco to Chicago O'Hare Intl. You should not have trouble finding flights to Chicago O'Hare Intl from San Francisco; the airport handles an average of 58 outbound flights to Chicago O'Hare Intl per day. You should also have plenty of airline options to choose from since 0 airlines have flights from the San Francisco airport to Chicago O'Hare Intl. It is only a 19.0 km journey to San Francisco (SFO) from San Francisco’s city centre.

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

    Flying on Alaska Airlines is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at $322. Additional round-trip tickets that might be worth considering are offered by Hawaiian Airlines and United Airlines, with the lowest prices starting at $355 and $377, respectively. These flights start at 44% lower than the current average price 3 months from now.

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

    The cheapest airline one-way is Southwest, with whom users have recently found tickets for as low as $163. However, be on the lookout for offers from Hawaiian Airlines and United Airlines, as they are both options that can get you from San Francisco to Chicago O'Hare Intl Airport for a low price.

  • 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, have a look at the most reliable airlines to get you to your destination on time: Fiji Airways (100%), Alaska Airlines (89%), China Southern( 89%).

  • 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 $166. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $302 on average our data indicates $170 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.

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