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

79 flights are operational daily from Illinois to San Francisco as of July 2025. The most popular departure time for this route is 6:00PM, with 40% 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 2025, there are 553 flights per week flying from Illinois to San Francisco. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.

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

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

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 34m on average. Another popular route from Illinois to San Francisco is flying from Peoria to San Francisco, which will take roughly 6h 44m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to San Francisco?

United Airlines, American Airlines and Alaska Airlines 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 46% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 9 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 2025, there are 8 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.

$90 Cheap Flights from Illinois to San Francisco in 2025

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Find the cheapest flights from Illinois to San Francisco

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

12:55 pm - 3:25 pmMDW-SFO

4h 30mnonstop

5:30 am - 11:30 amSFO-MDW

4h 00mnonstop

$179Southwest

Find Deal

vie., oct. 24 - vie., oct. 31

8:15 am - 10:50 amMDW-SFO

4h 35mnonstop

5:30 am - 11:30 amSFO-MDW

4h 00mnonstop

$188Southwest

Find Deal

sáb., oct. 25 - vie., oct. 31

6:50 pm - 9:33 pmORD-SFO

4h 43mnonstop

12:47 am - 7:06 amSFO-ORD

4h 19mnonstop

$188American Airlines

Find Deal

sáb., ago. 30 - mar., sep. 2

5:10 pm - 7:51 pmORD-SFO

4h 41mnonstop

2:26 pm - 8:48 pmSFO-ORD

4h 22mnonstop

$189American Airlines

Find Deal

mar., ago. 26 - dom., ago. 31

8:20 am - 2:01 pmORD-SFO

7h 41m1 stop

7:00 am - 1:54 pmSFO-ORD

28h 54m1 stop

$194Hawaiian Airlines

Find Deal

mié., oct. 22 - lun., oct. 27

8:20 am - 2:01 pmORD-SFO

7h 41m1 stop

10:26 am - 11:59 pmSFO-ORD

11h 33m1 stop

$203Hawaiian Airlines

Find Deal

mar., oct. 21 - mié., oct. 22

9:20 am - 10:01 pmORD-SFO

14h 41m1 stop

7:00 am - 11:59 pmSFO-ORD

14h 59m1 stop

$204Alaska Airlines

Find Deal

mar., oct. 28 - sáb., nov. 1

2:05 pm - 7:47 pmORD-SFO

7h 42m1 stop

7:00 am - 6:59 pmSFO-ORD

9h 59m1 stop

$220Alaska Airlines

Find Deal

vie., nov. 7 - mar., nov. 11

5:40 pm - 10:25 amSTL-SFO

18h 45m1 stop

6:50 am - 9:11 amSFO-STL

24h 21m1 stop

$225Frontier

Find Deal

mar., ago. 12 - mar., ago. 19

7:00 am - 11:25 pmORD-SFO

18h 25m1 stop

6:50 am - 10:37 amSFO-ORD

25h 47m1 stop

$235Frontier

Find Deal

mié., ago. 6 - mié., ago. 20

American Airlines flights from Illinois to San Francisco

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

American Airlines

Aug 30

ORD6:50 pmChicago O'Hare Intl

4h 43m

SFO9:33 pmSan Francisco

Sep 2

SFO12:47 amSan Francisco

4h 19m

ORD7:06 amChicago O'Hare Intl

$188

Find similar

American Airlines

Aug 26

ORD5:10 pmChicago O'Hare Intl

4h 41m

SFO7:51 pmSan Francisco

Aug 31

SFO2:26 pmSan Francisco

4h 22m

ORD8:48 pmChicago O'Hare Intl

$189

Find similar

American Airlines

Aug 27

ORD6:45 amChicago O'Hare Intl

4h 33m

SFO9:18 amSan Francisco

Sep 2

SFO12:47 amSan Francisco

4h 19m

ORD7:06 amChicago O'Hare Intl

$197

Find similar

Delta flights from Illinois to San Francisco

Our best Delta deals on Illinois to San Francisco flight tickets

Delta

Sep 6

MDW6:00 amChicago Midway

7h 38m

1 stop

SFO11:38 amSan Francisco

Sep 9

SFO11:35 amSan Francisco

7h 51m

1 stop

MDW9:26 pmChicago Midway

$257

Find similar

Delta

Sep 6

MDW1:08 pmChicago Midway

6h 57m

1 stop

SFO6:05 pmSan Francisco

Sep 12

SFO12:45 amSan Francisco

14h 50m

1 stop

MDW5:35 pmChicago Midway

$292

Find similar

Delta

Aug 26

STL6:00 amLambert-St Louis

11h 55m

2 stops

SFO3:55 pmSan Francisco

Sep 3

SFO1:45 pmSan Francisco

16h 51m

2 stops

STL8:36 amLambert-St Louis

$294

Find similar

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 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 Illinois to San Francisco is on a Thursday when prices can be found for as low as $356. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $521.

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 evening. Our users have found flights to San Francisco in the evening for as low as $378. Flights in the afternoon are often more expensive with an average ticket price of $447.

What is the cheapest Illinois to San Francisco flight route?

Fly from Chicago O'Hare Intl to San Francisco for the best Illinois - 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 Illinois when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $314 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 $267 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.

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	$90
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 $90. The best round-trip flight deal from Illinois to San Francisco found on momondo in the last 72 hours is $179.

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 near San Francisco: San Francisco (SFO)

Search flight deals

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 2025, there are 8 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 18.37% of the total bookings. Other popular models include Airbus A321neo with 17.72%, Boeing 737-800 with 17.47%, and Boeing 777 with 13.22%.

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
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,595 reviews	Search Hawaiian Airlines flights
Sun Country Air	PriceFrom $112	Free Cancellation	Rating 6.9 334 reviews	Search Sun Country Air flights
Frontier	PriceFrom $118	Free Cancellation	Rating 5.9 3,244 reviews	Search Frontier flights
Delta	PriceFrom $128	Free Cancellation	Rating 8.0 7,967 reviews	Search Delta flights
Southwest	PriceFrom $138	Free Cancellation	Rating 8.0 4,233 reviews	Search Southwest flights
United Airlines	PriceFrom $179	Free Cancellation	Rating 7.4 8,880 reviews	Search United Airlines flights
Alaska Airlines	PriceFrom $187	Free Cancellation	Rating 8.0 10,000 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $197	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights

Santa Cruz

Carmel-by-the-Sea

Modesto

Calistoga

Hayward

Sonoma

Bodega Bay

Roseville

Santa Clara

Big Sur

Daly City

Berkeley

Walnut Creek

Fremont

South San Francisco

Redwood City

Half Moon Bay

Sunnyvale

Vallejo

Pacific Grove

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.

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Cheap flights from Illinois to San Francisco from $90

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 8/30. 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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Big names and deals

Filter for what you want

Filter for what you want

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Find the cheapest flights from Illinois to San Francisco

Cheap round-trip flights

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American Airlines flights from Illinois to San Francisco

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

Delta flights from Illinois to San Francisco

Our best Delta deals on Illinois to San Francisco flight tickets

See travel insights to San Francisco from

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

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 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 Illinois to San Francisco is on a Thursday when prices can be found for as low as $356. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $521.

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 evening. Our users have found flights to San Francisco in the evening for as low as $378. Flights in the afternoon are often more expensive with an average ticket price of $447.

What is the cheapest Illinois to San Francisco flight route?

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

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

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.

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

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

What airlines fly to San Francisco?

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

79 flights are operational daily from Illinois to San Francisco as of July 2025. The most popular departure time for this route is 6:00PM, with 40% 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 2025, there are 553 flights per week flying from Illinois to San Francisco. The most common day of the week flights depart is Thu, with 19% of flights taking off on this day.

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

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

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

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

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

What is the most popular plane model 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?

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

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

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

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

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

Airports servicing California