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Cheap flights from Chicago O'Hare Intl Airport to San Francisco from $99

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Chicago O'Hare Intl Airport to San Francisco departing on 9/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Chicago O'Hare Intl Airport to San Francisco (ORD-SFO)

Cheap round-trip flights

Logo
8:20 am - 2:01 pmORD-SFO
7h 41m1 stop
Logo
10:23 pm - 10:41 amSFO-ORD
10h 18m1 stop
$197
Find Deal
Wed, Oct 15 - Sun, Nov 2
Frontier Logo
8:25 am - 7:45 amORD-SFO
25h 20m1 stop
Frontier Logo
9:59 pm - 11:15 pmSFO-ORD
23h 16m1 stop
$198Frontier
Find Deal
Sat, Sep 6 - Sat, Sep 13
Frontier Logo
7:15 am - 12:24 pmORD-SFO
7h 09m1 stop
Frontier Logo
1:29 pm - 10:24 pmSFO-ORD
6h 55m1 stop
$199Frontier
Find Deal
Sat, Oct 18 - Sun, Oct 19
Frontier Logo
7:15 am - 12:24 pmORD-SFO
7h 09m1 stop
Frontier Logo
5:45 am - 9:43 pmSFO-ORD
13h 58m1 stop
$200Frontier
Find Deal
Mon, Oct 20 - Fri, Oct 31
Frontier Logo
7:15 am - 10:27 pmORD-SFO
17h 12m1 stop
Frontier Logo
6:34 am - 11:53 pmSFO-ORD
15h 19m1 stop
$201Frontier
Find Deal
Wed, Oct 15 - Tue, Oct 21
Alaska Airlines Logo
8:20 am - 2:01 pmORD-SFO
7h 41m1 stop
Alaska Airlines Logo
7:00 am - 6:59 pmSFO-ORD
9h 59m1 stop
$204Alaska Airlines
Find Deal
Tue, Oct 21 - Wed, Oct 29
American Airlines Logo
8:11 am - 11:07 amORD-SFO
4h 56mnonstop
American Airlines Logo
10:49 pm - 5:07 amSFO-ORD
4h 18mnonstop
$213American Airlines
Find Deal
Wed, Dec 24 - Wed, Dec 31
American Airlines Logo
6:45 am - 9:24 amORD-SFO
4h 39mnonstop
American Airlines Logo
11:25 pm - 5:31 amSFO-ORD
4h 06mnonstop
$229American Airlines
Find Deal
Sat, Sep 6 - Mon, Sep 15
Alaska Airlines Logo
2:54 pm - 9:55 pmORD-SFO
9h 01m1 stop
Alaska Airlines Logo
9:51 am - 11:59 pmSFO-ORD
12h 08m2 stops
$230Alaska Airlines
Find Deal
Sat, Nov 8 - Wed, Nov 12
United Airlines Logo
7:00 am - 9:38 amORD-SFO
4h 38mnonstop
United Airlines Logo
11:00 pm - 5:13 amSFO-ORD
4h 13mnonstop
$231United Airlines
Find Deal
Sat, Sep 20 - Sat, Oct 4

Frontier flights from Chicago O'Hare Intl Airport to San Francisco

Our best Frontier deals on Chicago O'Hare Intl Airport to San Francisco flight tickets
Frontier
Sep 6
ORD8:25 amChicago O'Hare Intl
25h 20m
1 stop
SFO7:45 amSan Francisco
Sep 13
SFO9:59 pmSan Francisco
23h 16m
1 stop
ORD11:15 pmChicago O'Hare Intl
$198
Find similar
Frontier
Oct 18
ORD7:15 amChicago O'Hare Intl
7h 09m
1 stop
SFO12:24 pmSan Francisco
Oct 19
SFO1:29 pmSan Francisco
6h 55m
1 stop
ORD10:24 pmChicago O'Hare Intl
$199
Find similar
Frontier
Oct 20
ORD7:15 amChicago O'Hare Intl
7h 09m
1 stop
SFO12:24 pmSan Francisco
Oct 31
SFO5:45 amSan Francisco
13h 58m
1 stop
ORD9:43 pmChicago O'Hare Intl
$200
Find similar

American Airlines flights from Chicago O'Hare Intl Airport to San Francisco

Our best American Airlines deals on Chicago O'Hare Intl Airport to San Francisco flight tickets
American Airlines
Dec 24
ORD8:11 amChicago O'Hare Intl
4h 56m
SFO11:07 amSan Francisco
Dec 31
SFO10:49 pmSan Francisco
4h 18m
ORD5:07 amChicago O'Hare Intl
$213
Find similar
American Airlines
Sep 3
ORD6:45 amChicago O'Hare Intl
4h 39m
SFO9:24 amSan Francisco
Sep 5
SFO11:25 pmSan Francisco
4h 06m
ORD5:31 amChicago O'Hare Intl
$219
Find similar
American Airlines
Sep 6
ORD6:45 amChicago O'Hare Intl
4h 39m
SFO9:24 amSan Francisco
Sep 15
SFO11:25 pmSan Francisco
4h 06m
ORD5:31 amChicago O'Hare Intl
$229
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago O'Hare Intl Airport to San Francisco 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, momondo users made 832,500 searches. Data last updated August 27, 2025.
Use the filters below to find and compare flights from Chicago O'Hare Intl Airport to San Francisco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 10/15

8:20 am-2:01 pm

1 stop7h 41m

San Francisco

Sun 11/2

10:23 pm-10:41 am

1 stop10h 18m

$197

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 9/6

8:25 am-7:45 am

1 stop25h 20m

San Francisco

Sat 9/13

9:59 pm-11:15 pm

1 stop23h 16m

$198

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 10/18

7:15 am-12:24 pm

1 stop7h 09m

San Francisco

Sun 10/19

1:29 pm-10:24 pm

1 stop6h 55m

$199

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Mon 10/20

7:15 am-12:24 pm

1 stop7h 09m

San Francisco

Fri 10/31

5:45 am-9:43 pm

1 stop13h 58m

$200

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 10/15

7:15 am-10:27 pm

1 stop17h 12m

San Francisco

Tue 10/21

6:34 am-11:53 pm

1 stop15h 19m

$201

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 10/21

8:20 am-2:01 pm

1 stop7h 41m

San Francisco

Wed 10/29

7:00 am-6:59 pm

1 stop9h 59m

$204

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Wed 12/24

8:11 am-11:07 am

Nonstop4h 56m

San Francisco

Wed 12/31

10:49 pm-5:07 am

Nonstop4h 18m

$213

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 9/6

6:45 am-9:24 am

Nonstop4h 39m

San Francisco

Mon 9/15

11:25 pm-5:31 am

Nonstop4h 06m

$229

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 11/8

2:54 pm-9:55 pm

1 stop9h 01m

San Francisco

Wed 11/12

9:51 am-11:59 pm

2 stops12h 08m

$230

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 9/20

7:00 am-9:38 am

Nonstop4h 38m

San Francisco

Sat 10/4

11:00 pm-5:13 am

Nonstop4h 13m

$231

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Francisco from

How to get the cheapest flight ticket from Chicago O'Hare Intl Airport to San Francisco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Chicago O'Hare Intl Airport and San Francisco?

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of April, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $287.

What is the cheapest day to depart on your flight to San Francisco?

The cheapest day to depart from Chicago O'Hare Intl Airport to San Francisco is on a Thursday when prices can be found for as low as $349. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $520.

What is the cheapest time of day to depart on your flight to San Francisco?

Our data shows that the cheapest Chicago O'Hare Intl Airport to San Francisco flights are usually those with departure times in the evening. Our users have found flights to San Francisco in the evening for as low as $373. Flights in the afternoon are often more expensive with an average ticket price of $452.

What is the cheapest Chicago O'Hare Intl to San Francisco flight route?

Fly from Chicago O'Hare Intl to San Francisco for the best Chicago O'Hare Intl - San Francisco flight prices

How far in advance should I book a flight to San Francisco?

You are more likely to see cheaper flights to San Francisco from Chicago O'Hare Intl Airport when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $313 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Chicago O'Hare Intl Airport for as low as $274 on momondo.

What cabin class options are available on Chicago O'Hare Intl to San Francisco flights?

There are 4 cabin classes available to choose from on Chicago O'Hare Intl to San Francisco flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

How have Chicago O'Hare Intl Airport to San Francisco flight prices changed over time?

As of August 2025, prices for Chicago O'Hare Intl Airport to San Francisco flights are approximately 18% cheaper when compared to flights at the same time last year.

When to book flights from Chicago O'Hare Intl Airport to San Francisco

Are you open to changing your travel dates? Check out the ideal times to fly from Chicago O'Hare Intl Airport to San Francisco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Chicago O'Hare Intl Airport to San Francisco (ORD to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago O'Hare Intl Airport to San Francisco

Best Price Found

$156

Fastest flight time

4h 30m

Direct flights

Every day

Airports in San Francisco

1 airport
The best one-way flight to San Francisco from Chicago O'Hare Intl Airport in the past 72 hours is $156. The best round-trip flight deal from Chicago O'Hare Intl Airport to San Francisco found on momondo in the last 72 hours is $274.
The fastest flight from Chicago O'Hare Intl Airport to San Francisco takes 4h 30m
Direct flights go from Chicago O'Hare Intl Airport to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

  • How far is Chicago O'Hare Intl to San Francisco by plane?

    The distance between Chicago O'Hare Intl and San Francisco is about 1838.3 mi. Typically, this will take 4h 38m by plane in normal conditions.

  • When did momondo last update prices for flights from Chicago O'Hare Intl Airport to San Francisco Airport?

    Prices for flights from Chicago O'Hare Intl Airport to San Francisco Airport refresh daily.

  • How many operators does momondo search for flights from Chicago O'Hare Intl Airport to San Francisco Airport?

  • How old do you have to be to fly from Chicago O'Hare Intl Airport to San Francisco Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Chicago O'Hare Intl Airport to San Francisco Airport.

  • What documentation or ID do you need to fly to San Francisco Airport?

    The required travel and health documents for your San Francisco Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at San Francisco Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from Chicago O'Hare Intl Airport to San Francisco?

  • What is the most popular airline from Chicago O'Hare Intl Airport to San Francisco?

Best airlines flying from Chicago O'Hare Intl Airport to San Francisco

Compare and see reviews for airlines that fly from Chicago O'Hare Intl Airport to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,683 reviews
Search Hawaiian Airlines flights
FrontierPriceFrom $122Free CancellationRating
5.8
3,202 reviews
Search Frontier flights
DeltaPriceFrom $128Free CancellationRating
7.9
7,977 reviews
Search Delta flights
SouthwestPriceFrom $180Free CancellationRating
8.0
4,241 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $188Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $200Free CancellationRating
7.4
8,945 reviews
Search United Airlines flights

  • United Airlines Flights From Chicago O'Hare Intl Airport to San Francisco

    United Airlines flies from Chicago O'Hare Intl Airport to San Francisco around 60 times per week, with 8,945 momondo users rating the airline 7.4/10. The cheapest United Airlines deal from Chicago O'Hare Intl Airport to San Francisco in the last 72 hours was $200 (round-trip), much lower than the average airfare cost of $361 for United Airlines flights on this route.

  • American Airlines Flights From Chicago O'Hare Intl Airport to San Francisco

    American Airlines is also a popular choice for this route. American Airlines flight deals for Chicago O'Hare Intl Airport to San Francisco start from as low as $197 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $302. American Airlines operates 9 flights to San Francisco from Chicago O'Hare Intl Airport in an average week. Users have rated it 7.2/10 across 10,000 reviews.

Traveling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Carmel-by-the-Sea
Modesto
Sonoma
Calistoga
Hayward
Bodega Bay
Roseville
Santa Clara
Big Sur
Daly City
Fremont
Berkeley
Walnut Creek
Half Moon Bay
South San Francisco
Vallejo
Redwood City
Pacific Grove
Salinas

Why use momondo?

Why should I use momondo to find a flight deal from Chicago to San Francisco?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to San Francisco from Chicago.

Can I find flights from Chicago to San Francisco with flexible booking policies on momondo?

Flights from Chicago to San Francisco with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Chicago to San Francisco?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Chicago to San Francisco.

I’m not ready to book a flight from Chicago to San Francisco right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to San Francisco from Chicago. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

An easier way to manage your San Francisco trip

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