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Cheap flights from San Francisco to Chicago 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 San Francisco to Chicago departing on 9/13. 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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Cheap round-trip flights

Logo
10:23 pm - 11:35 amSFO-ORD
11h 12m1 stop
Logo
2:54 pm - 10:01 pmORD-SFO
9h 07m1 stop
$202
Find Deal
vie., oct. 24 - mié., nov. 12
Logo
6:34 am - 11:53 pmSFO-ORD
15h 19m1 stop
Logo
8:20 am - 2:01 pmORD-SFO
7h 41m1 stop
$203
Find Deal
mié., oct. 8 - mar., oct. 21
Frontier Logo
1:29 pm - 10:24 pmSFO-ORD
6h 55m1 stop
Frontier Logo
5:25 am - 4:00 pmORD-SFO
12h 35m1 stop
$204Frontier
Find Deal
sáb., oct. 11 - dom., oct. 19
Frontier Logo
1:29 pm - 10:24 pmSFO-ORD
6h 55m1 stop
Frontier Logo
5:25 am - 4:00 pmORD-SFO
12h 35m1 stop
$205Frontier
Find Deal
vie., oct. 17 - dom., oct. 19
Frontier Logo
6:34 am - 11:53 pmSFO-ORD
15h 19m1 stop
Frontier Logo
7:15 am - 10:27 pmORD-SFO
17h 12m1 stop
$206Frontier
Find Deal
mié., oct. 15 - mié., oct. 22
United Airlines Logo
6:30 am - 1:01 pmSFO-ORD
4h 31mnonstop
United Airlines Logo
12:53 pm - 3:30 pmORD-SFO
4h 37mnonstop
$231United Airlines
Find Deal
mar., sep. 23 - mar., sep. 30
Alaska Airlines Logo
6:45 am - 11:59 pmSFO-ORD
15h 14m1 stop
Alaska Airlines Logo
9:20 am - 10:01 pmORD-SFO
14h 41m1 stop
$234Alaska Airlines
Find Deal
dom., oct. 19 - mar., nov. 11
American Airlines Logo
2:10 pm - 8:40 pmSFO-ORD
4h 30mnonstop
American Airlines Logo
3:17 pm - 5:59 pmORD-SFO
4h 42mnonstop
$243American Airlines
Find Deal
jue., oct. 23 - vie., oct. 31
Alaska Airlines Logo
8:41 am - 11:59 pmSFO-ORD
13h 18m1 stop
Alaska Airlines Logo
7:59 pm - 11:01 amORD-SFO
17h 02m1 stop
$244Alaska Airlines
Find Deal
sáb., oct. 25 - mar., oct. 28
American Airlines Logo
11:25 pm - 5:49 amSFO-ORD
4h 24mnonstop
American Airlines Logo
5:45 pm - 8:28 pmORD-SFO
4h 43mnonstop
$245American Airlines
Find Deal
vie., oct. 31 - sáb., nov. 1

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

Our best Frontier deals on San Francisco to Chicago O'Hare Intl Airport flight tickets
Frontier
Oct 11
SFO1:29 pmSan Francisco
6h 55m
1 stop
ORD10:24 pmChicago O'Hare Intl
Oct 19
ORD5:25 amChicago O'Hare Intl
12h 35m
1 stop
SFO4:00 pmSan Francisco
$204
Find similar
Frontier
Oct 17
SFO1:29 pmSan Francisco
6h 55m
1 stop
ORD10:24 pmChicago O'Hare Intl
Oct 19
ORD5:25 amChicago O'Hare Intl
12h 35m
1 stop
SFO4:00 pmSan Francisco
$205
Find similar
Frontier
Oct 15
SFO6:34 amSan Francisco
15h 19m
1 stop
ORD11:53 pmChicago O'Hare Intl
Oct 22
ORD7:15 amChicago O'Hare Intl
17h 12m
1 stop
SFO10:27 pmSan Francisco
$206
Find similar

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

Our best United Airlines deals on San Francisco to Chicago O'Hare Intl Airport flight tickets
United Airlines
Sep 3
SFO4:55 pmSan Francisco
4h 17m
ORD11:12 pmChicago O'Hare Intl
Sep 30
ORD6:32 pmChicago O'Hare Intl
4h 48m
SFO9:20 pmSan Francisco
$205
Find similar
United Airlines
Sep 23
SFO6:30 amSan Francisco
4h 31m
ORD1:01 pmChicago O'Hare Intl
Sep 30
ORD12:53 pmChicago O'Hare Intl
4h 37m
SFO3:30 pmSan Francisco
$231
Find similar
United Airlines
Sep 4
SFO6:28 pmSan Francisco
4h 17m
ORD12:45 amChicago O'Hare Intl
Sep 6
ORD8:50 amChicago O'Hare Intl
4h 53m
SFO11:43 amSan Francisco
$269
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from San Francisco to Chicago O'Hare Intl Airport 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 agosto 28, 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

Fly to

Route

Depart

Return

Price

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

vie. 10/24

10:23 pm-11:35 am

1 stop11h 12m

Chicago O'Hare Intl

mié. 11/12

2:54 pm-10:01 pm

1 stop9h 07m

$202

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mié. 10/8

6:34 am-11:53 pm

1 stop15h 19m

Chicago O'Hare Intl

mar. 10/21

8:20 am-2:01 pm

1 stop7h 41m

$203

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

sáb. 10/11

1:29 pm-10:24 pm

1 stop6h 55m

Chicago O'Hare Intl

dom. 10/19

5:25 am-4:00 pm

1 stop12h 35m

$204

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

vie. 10/17

1:29 pm-10:24 pm

1 stop6h 55m

Chicago O'Hare Intl

dom. 10/19

5:25 am-4:00 pm

1 stop12h 35m

$205

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mié. 10/15

6:34 am-11:53 pm

1 stop15h 19m

Chicago O'Hare Intl

mié. 10/22

7:15 am-10:27 pm

1 stop17h 12m

$206

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

mar. 9/23

6:30 am-1:01 pm

Nonstop4h 31m

Chicago O'Hare Intl

mar. 9/30

12:53 pm-3:30 pm

Nonstop4h 37m

$231

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

dom. 10/19

6:45 am-11:59 pm

1 stop15h 14m

Chicago O'Hare Intl

mar. 11/11

9:20 am-10:01 pm

1 stop14h 41m

$234

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

jue. 10/23

2:10 pm-8:40 pm

Nonstop4h 30m

Chicago O'Hare Intl

vie. 10/31

3:17 pm-5:59 pm

Nonstop4h 42m

$243

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

sáb. 10/25

8:41 am-11:59 pm

1 stop13h 18m

Chicago O'Hare Intl

mar. 10/28

7:59 pm-11:01 am

1 stop17h 02m

$244

San FranciscoChicago

SFO - ORD

SFOORD

San Francisco

vie. 10/31

11:25 pm-5:49 am

Nonstop4h 24m

Chicago O'Hare Intl

sáb. 11/1

5:45 pm-8:28 pm

Nonstop4h 43m

$245

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 Chicago from

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

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 cheapest month to fly to Chicago O'Hare Intl Airport?

The month of April is another great option to travel to Chicago O'Hare Intl Airport, with average flight prices from San Francisco averaging around $307.

What is the cheapest day to depart on your flight to Chicago O'Hare Intl Airport?

The cheapest day to depart on your flight to Chicago O'Hare Intl Airport is on a Wednesday when prices can be found for as low as $404. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from San Francisco because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $513.

What is the cheapest time of day to depart on your flight to Chicago O'Hare Intl Airport?

Flying to Chicago O'Hare Intl Airport from San Francisco in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $418 when looking at flights departing in the afternoon. Try not to purchase tickets at noon because they tend to be around $472. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

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

How far in advance should I book a flight to Chicago O'Hare Intl Airport?

You are more likely to see cheaper flights to Chicago O'Hare Intl Airport from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Chicago O'Hare Intl Airport for around $365 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Chicago O'Hare Intl Airport from San Francisco for as low as $290 on momondo.

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

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

Can stopping save me money on San Francisco to Chicago O'Hare Intl Airport flights?

You could potentially save up to 29% on your flight if you consider stops on a San Francisco to Chicago O'Hare Intl Airport flight.

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

As of August 2025, prices for San Francisco to Chicago O'Hare Intl Airport flights are approximately 16% cheaper when compared to flights at the same time last year.

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

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

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

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

Best Price Found

$162

Fastest flight time

3h 57m

Direct flights

Every day
The best one-way flight to Chicago O'Hare Intl Airport from San Francisco in the past 72 hours is $162. The best round-trip flight deal from San Francisco to Chicago O'Hare Intl Airport found on momondo in the last 72 hours is $297.
The fastest flight from San Francisco to Chicago O'Hare Intl Airport takes 3h 57m
Direct flights go from San Francisco to Chicago O'Hare Intl Airport every day.
Search flight deals

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

    There are 1838.3 mi between San Francisco and Chicago O'Hare Intl. Typically, this will take 4h 24m by plane in normal conditions.

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

    Prices for flights from San Francisco Airport to Chicago O'Hare Intl Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Chicago O'Hare Intl Airport.

  • What documentation or ID do you need to fly to Chicago O'Hare Intl Airport?

    The travel and health documents required for your trip to Chicago O'Hare Intl Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Chicago O'Hare Intl Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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

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

Compare and see reviews for airlines that fly from San Francisco to Chicago O'Hare Intl Airport with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,690 reviews
Search Hawaiian Airlines flights
FrontierPriceFrom $126Free CancellationRating
5.8
3,204 reviews
Search Frontier flights
DeltaPriceFrom $128Free CancellationRating
7.9
7,977 reviews
Search Delta flights
Spirit AirlinesPriceFrom $143Free CancellationRating
6.3
8,028 reviews
Search Spirit Airlines flights
SouthwestPriceFrom $185Free CancellationRating
8.0
4,242 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $195Free 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 $207Free CancellationRating
7.4
8,944 reviews
Search United Airlines flights

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

    United Airlines flight deals from San Francisco to Chicago O'Hare Intl Airport start from $207 round-trip. Over the 65 United Airlines flights for this route in a normal week, average airfare is usually $417 round-trip - but some users have found much cheaper deals with momondo.

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

    American Airlines is also a popular choice for this route. American Airlines flight deals for San Francisco to Chicago O'Hare Intl Airport start from as low as $197 round-trip, depending on your selected dates, with average American Airlines deals seen on momondo around $347. American Airlines operates 21 flights to Chicago O'Hare Intl Airport from San Francisco in an average week. Users have rated it 7.2/10 across 10,000 reviews.

Traveling to a place near Chicago?

Book flights to Chicago if you plan to visit one of these locations
Lake Geneva
Rockford
South Haven
Schaumburg
Merrillville
Gurnee
Naperville
Rosemont
Kenosha
New Buffalo
Joliet
Oak Brook
Racine
Hammond
Tinley Park
Orland Park
Elgin
Aurora
Janesville
Benton Harbor

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from San Francisco to Chicago. Millions of users trust and use momondo every year so you are in good hands.

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

Yes. momondo allows you to filter the results for San Francisco to Chicago flights to just show those with flexible booking policies.

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

Once you have performed a search for San Francisco to Chicago flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from San Francisco to Chicago now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Chicago and let you know when they change.

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