How long does it take to fly to San Francisco?

Flight times from Illinois to San Francisco vary, but if you’re flying out of Chicago and flying into San Francisco (one of the most popular routes), then the duration is 4h 33m on average. Another popular route from Illinois to San Francisco is flying from Moline to San Francisco, which will take roughly 6h 46m. Keep in mind that layovers or delays could extend your travel time.

What is the cheapest airline that flies from Illinois to San Francisco?

United Airlines, Alaska Airlines, and Southwest are the most popular carriers operating from Illinois to San Francisco

How many flights depart from Illinois to San Francisco on average per day?

74 flights are operational daily from Illinois to San Francisco as of July 2026. The most popular departure time for this route is 3:00PM, with 35% of flights per day taking off in the afternoon.

How many flights depart from Illinois to San Francisco on average per week?

As of July 2026, there are 522 flights per week flying from Illinois to San Francisco. The most common day of the week flights depart is Fri, with 18% of flights taking off on this day.

What airlines fly to San Francisco?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to San Francisco from Illinois according to our data. United Airlines is the first choice among our users, with 52% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 7 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

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

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

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

As of July 2026, there are 7 operators available to choose from for flights from Illinois to San Francisco Airport.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois 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.

$91 Cheap Flights from Illinois to San Francisco in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Illinois to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:31 pm - 8:43 am

MLI

SFO

22h 12m

1 stop

11:20 am - 12:16 pm

SFO

MLI

22h 56m

1 stop

$238Multiple Airlines

Sun, Aug 16 - Wed, Aug 26

12:31 pm - 8:10 pm

MLI

SFO

9h 39m

1 stop

11:20 am - 12:16 pm

SFO

MLI

22h 56m

1 stop

$282Multiple Airlines

Thu, Aug 13 - Wed, Aug 26

6:05 am - 7:18 pm

MDW

SFO

15h 13m

1 stop

10:10 pm - 9:51 am

SFO

MDW

9h 41m

1 stop

$301Frontier

Tue, Jul 28 - Tue, Aug 4

9:57 pm - 12:23 am

ORD

SFO

28h 26m

1 stop

11:20 am - 5:37 am

SFO

ORD

16h 17m

1 stop

$301Frontier

Thu, Jul 23 - Thu, Jul 30

9:10 pm - 11:45 pm

MDW

SFO

4h 35mnonstop

11:40 pm - 5:50 am

SFO

MDW

4h 10mnonstop

$302Southwest

Thu, Aug 13 - Wed, Aug 19

12:05 pm - 5:35 pm

MDW

SFO

7h 30m

1 stop

11:40 pm - 5:50 am

SFO

MDW

4h 10mnonstop

$305Southwest

Fri, Sep 4 - Wed, Sep 9

8:45 am - 11:26 am

ORD

SFO

4h 41mnonstop

6:02 am - 12:33 pm

SFO

ORD

4h 31mnonstop

$308American Airlines

Thu, Sep 3 - Mon, Sep 7

4:26 pm - 12:35 am

PIA

SFO

10h 09m

1 stop

6:00 am - 4:59 pm

SFO

PIA

8h 59m

1 stop

$331American Airlines

Tue, Nov 3 - Sat, Nov 7

7:20 pm - 12:30 am

DEC

SFO

7h 10m

1 stop

10:35 pm - 7:09 am

SFO

DEC

6h 34m

1 stop

$344United Airlines

Sat, Aug 22 - Sat, Aug 29

6:30 pm - 12:32 am

MLI

SFO

8h 02m

1 stop

12:50 am - 10:04 am

SFO

MLI

7h 14m

1 stop

$376United Airlines

Fri, Jul 24 - Sat, Jul 25

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American Airlines flights from Illinois to San Francisco

Our best American Airlines deals on Illinois to San Francisco flight tickets

American Airlines

Sep 3

ORD8:45 amChicago O'Hare Intl

4h 41m

SFO11:26 amSan Francisco

Sep 7

SFO6:02 amSan Francisco

4h 31m

ORD12:33 pmChicago O'Hare Intl

$308

American Airlines

Sep 3

ORD5:05 pmChicago O'Hare Intl

4h 43m

SFO7:48 pmSan Francisco

Sep 7

SFO11:30 pmSan Francisco

7h 15m

1 stop

ORD8:45 amChicago O'Hare Intl

$312

American Airlines

Aug 13

ORD7:22 amChicago O'Hare Intl

4h 41m

SFO10:03 amSan Francisco

Aug 19

SFO3:46 pmSan Francisco

6h 42m

1 stop

ORD12:28 amChicago O'Hare Intl

$314

Frontier flights from Illinois to San Francisco

Our best Frontier deals on Illinois to San Francisco flight tickets

Frontier

Jul 28

MDW6:05 amChicago Midway

15h 13m

1 stop

SFO7:18 pmSan Francisco

Aug 4

SFO10:10 pmSan Francisco

9h 41m

1 stop

MDW9:51 amChicago Midway

$301

Frontier

Jul 16

ORD7:05 amChicago O'Hare Intl

14h 13m

1 stop

SFO7:18 pmSan Francisco

Jul 24

SFO9:39 pmSan Francisco

21h 13m

1 stop

ORD8:52 pmChicago O'Hare Intl

$302

Frontier

Jul 26

ORD7:05 amChicago O'Hare Intl

14h 13m

1 stop

SFO7:18 pmSan Francisco

Aug 4

SFO8:23 pmSan Francisco

7h 54m

1 stop

ORD6:17 amChicago O'Hare Intl

$303

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

MolineSan Francisco

MLI - SFO

MLISFO

Moline Quad-City

Sun 8/16

12:31 pm-8:43 am

1 stop22h 12m

San Francisco

Wed 8/26

11:20 am-12:16 pm

1 stop22h 56m

$238

MolineSan Francisco

MLI - SFO

MLISFO

Moline Quad-City

Thu 8/13

12:31 pm-8:10 pm

1 stop9h 39m

San Francisco

Wed 8/26

11:20 am-12:16 pm

1 stop22h 56m

$282

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Tue 7/28

6:05 am-7:18 pm

1 stop15h 13m

San Francisco

Tue 8/4

10:10 pm-9:51 am

1 stop9h 41m

$301

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 7/23

9:57 pm-12:23 am

1 stop28h 26m

San Francisco

Thu 7/30

11:20 am-5:37 am

1 stop16h 17m

$301

Quickest round-trip

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Thu 8/13

9:10 pm-11:45 pm

Nonstop4h 35m

San Francisco

Wed 8/19

11:40 pm-5:50 am

Nonstop4h 10m

$302

ChicagoSan Francisco

MDW - SFO

MDWSFO

Chicago Midway

Fri 9/4

12:05 pm-5:35 pm

1 stop7h 30m

San Francisco

Wed 9/9

11:40 pm-5:50 am

Nonstop4h 10m

$305

ChicagoSan Francisco

ORD - SFO

ORDSFO

Chicago O'Hare Intl

Thu 9/3

8:45 am-11:26 am

Nonstop4h 41m

San Francisco

Mon 9/7

6:02 am-12:33 pm

Nonstop4h 31m

$308

PeoriaSan Francisco

PIA - SFO

PIASFO

Greater Peoria

Tue 11/3

4:26 pm-12:35 am

1 stop10h 09m

San Francisco

Sat 11/7

6:00 am-4:59 pm

1 stop8h 59m

$331

DecaturSan Francisco

DEC - SFO

DECSFO

Decatur Arpt

Sat 8/22

7:20 pm-12:30 am

1 stop7h 10m

San Francisco

Sat 8/29

10:35 pm-7:09 am

1 stop6h 34m

$344

MolineSan Francisco

MLI - SFO

MLISFO

Moline Quad-City

Fri 7/24

6:30 pm-12:32 am

1 stop8h 02m

San Francisco

Sat 7/25

12:50 am-10:04 am

1 stop7h 14m

$376

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Illinois 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

Prices

Airlines

Other information

What is the cheapest month to fly to San Francisco?

If you aren’t able to travel to San Francisco during the month of September, then flying in March is also cheap. Prices for this month can be found on momondo for an average of $352.

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

The cheapest day to depart from Illinois to San Francisco is on a Thursday when prices can be found for as low as $414. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $677.

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

Our data shows that the cheapest Illinois to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $457. Flights in the afternoon are often more expensive with an average ticket price of $627.

What is the cheapest Illinois to San Francisco flight route?

Fly from Chicago Midway to San Francisco for the best Illinois - San Francisco flight prices

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

You are more likely to see cheaper flights to San Francisco from Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $397 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Illinois for as low as $325 on momondo.

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

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

You could potentially save up to 19% on your flight if you consider stops on a Illinois to San Francisco flight.

Cheap Illinois to San Francisco flight deals and tips

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

Best Price Found	$203
Fastest flight time	4h 10m
Direct flights	Every day
Airports in San Francisco	1 airport

The best one-way flight to San Francisco from Illinois in the past 72 hours is $203. The best round-trip flight deal from Illinois to San Francisco found on momondo in the last 72 hours is $311.

The fastest flight from Illinois to San Francisco takes 4h 10m

Direct flights go from Illinois to San Francisco every day.

There is 1 airport in San Francisco. From Illinois there are direct flights to San Francisco (SFO).

Search flight deals

Frequently asked questions about flying from Illinois to San Francisco

When did momondo last update prices for flights from Illinois to San Francisco Airport?
Prices for flights from Illinois to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Illinois to San Francisco Airport?
As of July 2026, there are 7 operators available to choose from for flights from Illinois to San Francisco Airport.
How old do you have to be to fly from Illinois to San Francisco Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Illinois 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 Illinois to San Francisco?
Based on momondo bookings for flights between Illinois and San Francisco, the leading plane model is Boeing 757-300, making up 15.91% of the total bookings. Other popular models include Boeing 737-800 with 15.53%, Airbus A321neo with 13.68%, and Airbus A321-100/200 with 11.48%.

Best airlines flying from Illinois to San Francisco

Compare and see reviews for airlines that fly from Illinois to San Francisco with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $120	Free Cancellation	Rating 5.6 2,847 reviews	Search Frontier flights
Delta	PriceFrom $128	Free Cancellation	Rating 7.8 8,453 reviews	Search Delta flights
Southwest	PriceFrom $138	Free Cancellation	Rating 7.9 4,250 reviews	Search Southwest flights
JetBlue	PriceFrom $159	Free Cancellation	Rating 7.1 3,008 reviews	Search JetBlue flights
American Airlines	PriceFrom $206	Free Cancellation	Rating 7.1 11,764 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $217	Free Cancellation	Rating 7.9 12,607 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $241	Free Cancellation	Rating 7.4 9,927 reviews	Search United Airlines flights

Santa Cruz

Carmel-by-the-Sea

Modesto

Bodega Bay

South San Francisco

Sonoma

Fremont

Hayward

Roseville

Walnut Creek

Santa Clara

Berkeley

Vallejo

Salinas

Sunnyvale

Big Sur

Burlingame

Daly City

Milpitas

Turlock

Why use momondo?

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

It is quick and easy to find Illinois to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.

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

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

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

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

Yes momondo offers price alerts on flights to San Francisco from Illinois. 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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Cheap flights from Illinois to San Francisco from $91

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Illinois to San Francisco departing on 9/12. 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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American Airlines flights from Illinois to San Francisco

Our best American Airlines deals on Illinois to San Francisco flight tickets

Frontier flights from Illinois to San Francisco

Our best Frontier deals on Illinois to San Francisco flight tickets

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How to get the cheapest flight ticket from Illinois to San Francisco

What is the cheapest month to fly to San Francisco?

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

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

What is the cheapest Illinois to San Francisco flight route?

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

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

Can stopping save me money on Illinois to San Francisco flights?

What is the cheapest airline that flies from Illinois to San Francisco?

What airlines fly to San Francisco?

How many flights depart from Illinois to San Francisco on average per day?

How many flights depart from Illinois to San Francisco on average per week?

How long does it take to fly to San Francisco?

Cheap Illinois to San Francisco flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in San Francisco

Frequently asked questions about flying from Illinois to San Francisco

Best airlines flying from Illinois to San Francisco

Compare and see reviews for airlines that fly from Illinois to San Francisco with momondo

Traveling to a place near San Francisco?

Why use momondo?

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.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

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Fly your favorite airline to San Francisco

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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List of cabin classes available on flights landing in San Francisco. Availability may vary depending on flight origin and airline.

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