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Cheap flights from San Francisco to Chicago O'Hare Intl Airport from $155

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 18/3. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
26 Feb — 5 Mar1
1 adult

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 21 February 2025.

Round-trip from

$325

One-way from

$155

Popular in

December

Cheapest in

January

Average price

$593

Good one-way deal

$407 or less
Alaska Airlines
  • Alaska Airlines
  • 18/3-30/3
  • Nonstop
  • 9h 11m total
  • San Francisco to Chicago
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Alaska Airlines
  • Alaska Airlines
  • 18/3
  • Nonstop
  • 4h 12m total
  • San Francisco to Chicago
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($33 potential increase over avg. return price).
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Cheapest flight prices on average. 1% potential price decrease ($16 potential savings vs. average return price).
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Average for round-trip flights in February 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 21 February 2025.

Tue 18/310:46SFO - ORD
Nonstop4h 12mAlaska Airlines
Mon 31/318:56ORD - SFO
Nonstop4h 59mAlaska Airlines
Deal found 20/2$325
Mon 14/400:08SFO - ORD
Nonstop4h 22mUnited Airlines
Sun 20/406:30ORD - SFO
Nonstop4h 50mUnited Airlines
Deal found 20/2$326
Mon 21/400:47SFO - ORD
1 stop5h 48mDelta
Fri 25/407:50ORD - SFO
1 stop9h 56mDelta
Deal found 20/2$345
Mon 28/420:09SFO - ORD
1 stop7h 56mHawaiian Airlines
Thu 1/518:58ORD - SFO
Nonstop4h 59mHawaiian Airlines
Deal found 20/2$356
Wed 16/423:59SFO - ORD
Nonstop4h 18mAmerican Airlines
Mon 28/410:34ORD - SFO
Nonstop4h 49mAmerican Airlines
Deal found 20/2$404
Tue 1/405:20SFO - ORD
2 stops9h 05mSouthwest
Fri 4/419:10ORD - SFO
1 stop7h 20mSouthwest
Deal found 20/2$473
Thu 24/709:04SFO - ORD
1 stop8h 07mSun Country Air
Thu 31/720:10ORD - SFO
1 stop13h 58mSun Country Air
Deal found 20/2$525

Find flights from San Francisco to O'Hare Intl within your budget

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 21 February 2025.

Fly from

San Francisco

Fly to

O'Hare Intl

Route

Depart

Return

Price

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 18/3

10:46-16:58

Nonstop4h 12m

Chicago O'Hare Intl

Mon 31/3

18:56-21:55

Nonstop4h 59m

$325

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 14/4

00:08-06:30

Nonstop4h 22m

Chicago O'Hare Intl

Sun 20/4

06:30-09:20

Nonstop4h 50m

$326

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 21/4

00:47-08:35

1 stop5h 48m

Chicago O'Hare Intl

Fri 25/4

07:50-15:46

1 stop9h 56m

$345

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Mon 28/4

20:09-06:05

1 stop7h 56m

Chicago O'Hare Intl

Thu 1/5

18:58-21:57

Nonstop4h 59m

$356

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Wed 16/4

23:59-06:17

Nonstop4h 18m

Chicago O'Hare Intl

Mon 28/4

10:34-13:23

Nonstop4h 49m

$404

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 1/4

05:20-16:25

2 stops9h 05m

Chicago O'Hare Intl

Fri 4/4

19:10-00:30

1 stop7h 20m

$473

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Thu 24/7

09:04-19:11

1 stop8h 07m

Chicago O'Hare Intl

Thu 31/7

20:10-08:08

1 stop13h 58m

$525

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 4/3

20:35-10:43

1 stop12h 08m

Chicago O'Hare Intl

Tue 11/3

11:44-19:33

1 stop9h 49m

$552

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Tue 18/3

10:46-16:58

Nonstop4h 12m

$155

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

Sun 16/3

22:36-04:51

Nonstop4h 15m

$171

Flights are sorted by cheapest return flights first.

Deals found on 20/2

Showing 1-10 of 15 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.

Travel insights for flights from San Francisco to O'Hare Intl

Get recent, data-driven insights about flights from San Francisco to O'Hare Intl including ideal travel times, pricing trends, and more.

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 14 February 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 21 February 2025.

It’s typically best to fly out from San Francisco to Chicago O'Hare Intl Airport in the afternoon. Doing so could potentially save you 17% 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 21 February 2025.

The most flights from SFO to ORD are scheduled on a Thursday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 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 21 February 2025.
Peruse reviews from past customers who have flown with Southwest, Alaska Airlines 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.
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Southwest
8.1
Very Good
4,408 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Alaska Airlines
8.0
Very Good
9,697 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Delta
8.0
Very Good
8,217 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

JetBlue
7.4
Good
3,069 reviews
Southwest
8.1
Very Good
4,408 reviews
Check prices

Crew

8.7

Entertainment

7.6

Overall

8.1

Food

7.1

Boarding

8.2

Comfort

8.1

Reviews

1 / 20

10.0
Excellent

Arlene,May 2024

SAN - OAK

My original flight was delayed so they found this flight for me so I could arrive at a reasonable time

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 38 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 $325. Additional round-trip tickets that might be worth considering are offered by United Airlines and Delta, with the lowest prices starting at $326 and $345, respectively. These flights start at 46% 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 Alaska Airlines, with whom users have recently found tickets for as low as $155. However, be on the lookout for offers from United Airlines and Hawaiian 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: Asiana Airlines (97%), Iberia (94%), Royal Jordanian( 94%).

  • 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 $311. While the most popular route (San Francisco - Chicago O'Hare Intl) can be booked for $279 on average our data indicates $407 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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Alternative routes for San Francisco to O'Hare Intl

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Los Angeles to O'Hare Intl flights

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