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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $157

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 30/4. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
30 Mar — 6 Apr1
1 adult

Cheapflights Tip: The best prices from San Francisco to Chicago O'Hare Intl are usually found in January or September, booked 77 days in advance, depart on a Monday 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 25 March 2025.

Round-trip from

$344

One-way from

$157

Popular in

December

Cheapest in

January

Average price

$667

Good one-way deal

$154 or less
Southwest
  • Southwest
  • 15/4-16/4
  • 2 total stops
  • 15h 10m total
  • San Francisco to Chicago
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United Airlines
  • United Airlines
  • 23/4
  • Nonstop
  • 4h 21m total
  • San Francisco to Chicago
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Highest demand for flights based on searches. 4% potential increase in price ($46 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease ($18 potential savings vs. average return price).
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Average for round-trip flights in March 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 25 March 2025.

Tue 15/406:00SFO - ORD
1 stop8h 45mSouthwest
Wed 16/418:55ORD - SFO
1 stop6h 25mSouthwest
Deal found 24/3$344
Mon 28/423:20SFO - ORD
Nonstop4h 24mUnited Airlines
Thu 1/518:25ORD - SFO
Nonstop5h 00mUnited Airlines
Deal found 24/3$345
Fri 2/500:47SFO - ORD
1 stop8h 20mAmerican Airlines
Tue 6/521:00ORD - SFO
Nonstop4h 49mAmerican Airlines
Deal found 24/3$347
Tue 15/408:20SFO - ORD
1 stop7h 35mAlaska Airlines
Fri 18/418:56ORD - SFO
Nonstop4h 59mAlaska Airlines
Deal found 24/3$361
Sat 17/518:09SFO - ORD
1 stop21h 18mSun Country Air
Mon 19/520:05ORD - SFO
1 stop20h 07mSun Country Air
Deal found 23/3$406
Sat 19/407:10SFO - ORD
1 stop7h 12mDelta
Sat 26/413:31ORD - SFO
1 stop8h 44mDelta
Deal found 24/3$407
Fri 25/420:09SFO - ORD
1 stop7h 56mHawaiian Airlines
Mon 28/418:58ORD - SFO
Nonstop4h 59mHawaiian Airlines
Deal found 24/3$466

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 25 March 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 15/4

06:00-16:45

1 stop8h 45m

Chicago O'Hare Intl

Wed 16/4

18:55-23:20

1 stop6h 25m

$344

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 28/4

20:09-06:05

1 stop7h 56m

Chicago O'Hare Intl

Sat 3/5

19:13-22:12

Nonstop4h 59m

$345

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Fri 2/5

00:47-11:07

1 stop8h 20m

Chicago O'Hare Intl

Tue 6/5

21:00-23:49

Nonstop4h 49m

$347

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 21/5

12:55-21:17

1 stop6h 22m

Chicago O'Hare Intl

Sun 25/5

06:48-09:31

Nonstop4h 43m

$388

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 1/5

18:09-19:09

1 stop23h 00m

Chicago O'Hare Intl

Mon 12/5

20:05-17:13

1 stop23h 08m

$406

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 19/4

07:10-16:22

1 stop7h 12m

Chicago O'Hare Intl

Sat 26/4

13:31-20:15

1 stop8h 44m

$407

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 2/7

12:03-23:39

1 stop9h 36m

Chicago O'Hare Intl

Wed 16/7

19:18-22:06

Nonstop4h 48m

$450

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 30/4

11:48-18:20

Nonstop4h 32m

$157

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sat 5/7

06:25-17:55

1 stop9h 30m

$167

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 1/5

23:20-05:45

Nonstop4h 25m

$173

Flights are sorted by cheapest return flights first.

Deals found on 25/3

Showing 1-10 of 14 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 21 March 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 25 March 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 25 March 2025.

The most flights from SFO to ORD are scheduled on a Monday (64 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (31 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 25 March 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
9,789 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very Good
9,789 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very Good
4,272 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very Good
7,890 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,330 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very Good
9,789 reviews
Check prices

Food

7.1

Overall

8.0

Comfort

7.9

Crew

8.5

Boarding

8.2

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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 52 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 Southwest is currently your cheapest option to Chicago O'Hare Intl Airport, with prices starting at $344. Additional round-trip tickets that might be worth considering are offered by Alaska Airlines and American Airlines, with the lowest prices starting at $345 and $347, respectively. These flights start at 43% 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 United Airlines, with whom users have recently found tickets for as low as $157. However, be on the lookout for offers from Southwest and Alaska 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: Royal Jordanian (99%), Asiana Airlines (97%), Brussels Airlines( 95%).

  • 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 $152. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $326 on average our data indicates $154 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.

See more FAQs

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Book flights to San Francisco if you plan to visit one of these locations
Arlington Heights
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Alternative routes for San Francisco to O'Hare Intl

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Los Angeles to O'Hare Intl flights

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Yes! Cheapflights helps users easily find flights from San Francisco to O'Hare Intl with no change fees.

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Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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