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Cheap flights from Chicago to San Francisco from $121

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 to San Francisco departing on 2/9. 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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Multiple Airlines Logo
2:54 pm - 10:01 pmORD-SFO
9h 07m1 stop
Multiple Airlines Logo
10:23 pm - 10:38 amSFO-ORD
10h 15m1 stop
$246Multiple Airlines
Find Deal
Thu, Nov 13 - Sat, Nov 15
Delta Logo
7:47 am - 3:57 pmORD-SFO
10h 10m1 stop
Delta Logo
10:30 am - 11:59 pmSFO-ORD
11h 29m1 stop
$247Delta
Find Deal
Fri, Nov 21 - Wed, Dec 3
Frontier Logo
1:37 pm - 9:11 pmMDW-SFO
9h 34m1 stop
Frontier Logo
10:23 pm - 11:38 amSFO-MDW
11h 15m1 stop
$248Frontier
Find Deal
Fri, Nov 7 - Mon, Nov 10
Frontier Logo
3:27 pm - 9:36 pmORD-SFO
8h 09m1 stop
Frontier Logo
6:24 am - 12:12 amSFO-ORD
15h 48m1 stop
$248Frontier
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Tue, Dec 23 - Wed, Dec 31
Alaska Airlines Logo
8:59 pm - 10:01 pmORD-SFO
27h 02m1 stop
Alaska Airlines Logo
2:48 pm - 11:59 pmSFO-ORD
7h 11m1 stop
$252Alaska Airlines
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Tue, Nov 11 - Sat, Nov 15
United Airlines Logo
10:10 pm - 1:14 amORD-SFO
5h 04mnonstop
United Airlines Logo
6:45 am - 1:10 pmSFO-ORD
4h 25mnonstop
$258United Airlines
Find Deal
Thu, Dec 18 - Sat, Jan 17
Alaska Airlines Logo
8:59 pm - 8:50 amORD-SFO
13h 51m1 stop
Alaska Airlines Logo
7:00 am - 11:59 pmSFO-ORD
14h 59m1 stop
$262Alaska Airlines
Find Deal
Sun, Nov 16 - Wed, Nov 19
United Airlines Logo
10:10 pm - 1:14 amORD-SFO
5h 04mnonstop
United Airlines Logo
6:00 am - 12:25 pmSFO-ORD
4h 25mnonstop
$267United Airlines
Find Deal
Tue, Dec 23 - Wed, Dec 31
American Airlines Logo
5:00 am - 9:42 amORD-SFO
6h 42m1 stop
American Airlines Logo
11:15 pm - 5:20 amSFO-ORD
4h 05mnonstop
$271American Airlines
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Sat, Dec 6 - Sat, Dec 13
American Airlines Logo
8:25 pm - 11:28 pmORD-SFO
5h 03mnonstop
American Airlines Logo
11:45 pm - 9:36 amSFO-ORD
7h 51m1 stop
$286American Airlines
Find Deal
Thu, Feb 26 - Mon, Mar 2

Alaska Airlines flights from Chicago to San Francisco

Our best Alaska Airlines deals on Chicago to San Francisco flight tickets
Alaska Airlines
Oct 31
ORD7:00 amChicago O'Hare Intl
7h 35m
1 stop
SFO12:35 pmSan Francisco
Nov 16
SFO7:00 amSan Francisco
14h 59m
1 stop
ORD11:59 pmChicago O'Hare Intl
$247
Find similar
Alaska Airlines
Nov 11
ORD8:59 pmChicago O'Hare Intl
27h 02m
1 stop
SFO10:01 pmSan Francisco
Nov 15
SFO2:48 pmSan Francisco
7h 11m
1 stop
ORD11:59 pmChicago O'Hare Intl
$252
Find similar
Alaska Airlines
Nov 16
ORD8:59 pmChicago O'Hare Intl
13h 51m
1 stop
SFO8:50 amSan Francisco
Nov 19
SFO7:00 amSan Francisco
14h 59m
1 stop
ORD11:59 pmChicago O'Hare Intl
$262
Find similar

Frontier flights from Chicago to San Francisco

Our best Frontier deals on Chicago to San Francisco flight tickets
Frontier
Oct 30
ORD6:20 pmChicago O'Hare Intl
16h 24m
2 stops
SFO8:44 amSan Francisco
Nov 13
SFO1:10 pmSan Francisco
9h 49m
1 stop
ORD12:59 amChicago O'Hare Intl
$246
Find similar
Frontier
Nov 1
ORD7:15 amChicago O'Hare Intl
15h 56m
2 stops
SFO9:11 pmSan Francisco
Nov 13
SFO1:10 pmSan Francisco
9h 49m
1 stop
ORD12:59 amChicago O'Hare Intl
$248
Find similar
Frontier
Nov 8
MDW6:30 amChicago Midway
16h 41m
2 stops
SFO9:11 pmSan Francisco
Nov 12
SFO8:55 pmSan Francisco
18h 27m
1 stop
MDW5:22 pmChicago Midway
$249
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Chicago 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 October 23, 2025.
Use the filters below to find and compare flights from Chicago 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

Thu 11/13

2:54 pm-10:01 pm

1 stop9h 07m

San Francisco

Sat 11/15

10:23 pm-10:38 am

1 stop10h 15m

$246

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Fri 11/21

7:47 am-3:57 pm

1 stop10h 10m

San Francisco

Wed 12/3

10:30 am-11:59 pm

1 stop11h 29m

$247

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Fri 11/7

1:37 pm-9:11 pm

1 stop9h 34m

San Francisco

Mon 11/10

10:23 pm-11:38 am

1 stop11h 15m

$248

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 12/23

3:27 pm-9:36 pm

1 stop8h 09m

San Francisco

Wed 12/31

6:24 am-12:12 am

1 stop15h 48m

$248

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 11/11

8:59 pm-10:01 pm

1 stop27h 02m

San Francisco

Sat 11/15

2:48 pm-11:59 pm

1 stop7h 11m

$252

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 12/18

10:10 pm-1:14 am

Nonstop5h 04m

San Francisco

Sat 1/17

6:45 am-1:10 pm

Nonstop4h 25m

$258

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sun 11/16

8:59 pm-8:50 am

1 stop13h 51m

San Francisco

Wed 11/19

7:00 am-11:59 pm

1 stop14h 59m

$262

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Tue 12/23

10:10 pm-1:14 am

Nonstop5h 04m

San Francisco

Wed 12/31

6:00 am-12:25 pm

Nonstop4h 25m

$267

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Sat 12/6

5:00 am-9:42 am

1 stop6h 42m

San Francisco

Sat 12/13

11:15 pm-5:20 am

Nonstop4h 05m

$271

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 2/26

8:25 pm-11:28 pm

Nonstop5h 03m

San Francisco

Mon 3/2

11:45 pm-9:36 am

1 stop7h 51m

$286

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 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 cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of July, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $288.

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

The cheapest day to depart from Chicago to San Francisco is on a Thursday when prices can be found for as low as $351. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $538.

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

Our data shows that the cheapest Chicago 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 $375. Flights in the afternoon are often more expensive with an average ticket price of $479.

What is the cheapest Chicago to San Francisco flight route?

Fly from Chicago Midway to San Francisco for the best Chicago - 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 when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $321 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 for as low as $283 on momondo.

What cabin class options are available on Chicago to San Francisco flights?

There are 4 cabin classes available to choose from on Chicago to San Francisco 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 Chicago to San Francisco flights?

You could potentially save up to 27% on your flight if you consider stops on a Chicago to San Francisco flight.

How have Chicago to San Francisco flight prices changed over time?

As of October 2025, prices for Chicago to San Francisco flights are approximately 66% more expensive when compared to flights at the same time last year.

When to book flights from Chicago to San Francisco

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

Cheap Chicago to San Francisco (CHI to SFO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Chicago to San Francisco

Best Price Found

$155

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 in the past 72 hours is $155. The best round-trip flight deal from Chicago to San Francisco found on momondo in the last 72 hours is $299.
The fastest flight from Chicago to San Francisco takes 4h 30m
Direct flights go from Chicago to San Francisco every day.
There is 1 airport near San Francisco: San Francisco (SFO)
Search flight deals

  • How far is Chicago to San Francisco by plane?

    San Francisco is 1852.8 mi away from Chicago. Typically, this will take 4h 45m by plane in normal conditions.

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

    Prices for flights from Chicago to San Francisco Airport refresh daily.

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

  • How old do you have to be to fly from Chicago to San Francisco Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Chicago to San Francisco Airport.

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

    The travel and health documents you'll need for your trip to San Francisco Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Francisco Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Chicago to San Francisco?

  • What is the most popular airline from Chicago to San Francisco?

Best airlines flying from Chicago to San Francisco

Compare and see reviews for airlines that fly from Chicago to San Francisco with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $90Free CancellationRating
5.8
3,127 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,788 reviews
Search Hawaiian Airlines flights
Sun Country AirPriceFrom $112Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
DeltaPriceFrom $128Free CancellationRating
7.9
7,981 reviews
Search Delta flights
SouthwestPriceFrom $138Free CancellationRating
8.0
4,236 reviews
Search Southwest flights
Alaska AirlinesPriceFrom $188Free CancellationRating
8.0
11,156 reviews
Search Alaska Airlines flights
American AirlinesPriceFrom $197Free CancellationRating
7.2
11,031 reviews
Search American Airlines flights
United AirlinesPriceFrom $202Free CancellationRating
7.4
8,992 reviews
Search United Airlines flights

  • Southwest Flights From Chicago to San Francisco

    Southwest operates around 5 flights from Chicago to San Francisco every week. The average price of these flights found in the last 72 hours has been $383, but momondo users have found Southwest deals from Chicago to San Francisco from as low as $138 round-trip. Southwest has been scored 8.0/10 in 4,236 reviews.

  • United Airlines Flights From Chicago to San Francisco

    $202 is the best United Airlines flight deal from Chicago to San Francisco found on momondo over the last 72 hours. The average United Airlines ticket price found was closer to $393, however, with flight time and availability significantly affecting the price. United Airlines (7.4/10 from 8,992 user reviews) flies into San Francisco from Chicago 36 times in an average week so prices can vary.

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
Bodega Bay
Roseville
Calistoga
Hayward
Big Sur
Santa Clara
Daly City
Berkeley
Fremont
Vallejo
Walnut Creek
Half Moon Bay
Salinas
Turlock
Pacific Grove
Livermore

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?

Yes. All flights to San Francisco from Chicago on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Chicago to San Francisco 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 Chicago to San Francisco right now. Can momondo alert me if prices change?

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

An easier way to manage your San Francisco trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
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