What airlines fly to Illinois?

United Airlines, American Airlines and Southwest are the top three most popular airlines that fly to Illinois from Sacramento according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 9 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

As of March 2026, there are 88 flights per week flying from Sacramento to Illinois. The most common day of the week flights depart is Mon, with 19% of flights taking off on this day.

What is the cheapest airline that flies from Sacramento Intl to Illinois?

Frontier, Delta, and Alaska Airlines are the most popular carriers operating from Sacramento Intl to Illinois

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

As of March 2026, 12 flights take off from Sacramento and land in Illinois each day. The most common flight departure time for this route is 11:00PM, with 37% of daily flights taking off at noon.

When did momondo last update prices for flights from Sacramento Intl Airport to Illinois?

Prices for flights from Sacramento Intl Airport to Illinois refresh daily.

How many operators does momondo search for flights from Sacramento Intl Airport to Illinois?

There are 7 operators available for flights from Sacramento Intl Airport to Illinois as of March 2026.

How old do you have to be to fly from Sacramento Intl Airport to Illinois?

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 Sacramento Intl Airport to Illinois.

What documentation or ID do you need to fly to Illinois?

The required travel and health documents for your Illinois 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 Illinois. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$79 Cheap Flights from Sacramento to Illinois in 2026

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Find the cheapest flights from Sacramento to Illinois

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

11:00 pm - 7:45 am

SMF

STL

6h 45m

1 stop

5:40 pm - 10:25 pm

STL

SMF

6h 45m

1 stop

$209Southwest

Tue, Apr 21 - Tue, Apr 28

8:15 am - 5:55 pm

SMF

STL

7h 40m

2 stops

2:30 pm - 8:05 pm

STL

SMF

7h 35m

1 stop

$214Southwest

Tue, Apr 21 - Tue, Apr 28

11:59 pm - 8:39 am

SMF

STL

6h 40m

1 stop

7:23 pm - 11:59 pm

STL

SMF

6h 36m

1 stop

$233United Airlines

Tue, May 19 - Thu, May 28

2:22 pm - 6:40 am

SMF

ORD

14h 18m

2 stops

3:52 pm - 10:54 pm

ORD

SMF

9h 02m

1 stop

$308Alaska Airlines

Sat, Apr 25 - Sat, May 2

8:36 am - 6:57 pm

SMF

ORD

8h 21m

1 stop

7:59 pm - 9:36 am

ORD

SMF

15h 37m

1 stop

$311Alaska Airlines

Thu, Jun 25 - Mon, Jun 29

5:31 am - 4:01 pm

SMF

MLI

8h 30m

1 stop

7:20 am - 3:32 pm

MLI

SMF

10h 12m

2 stops

$336American Airlines

Wed, Sep 9 - Tue, Sep 15

11:22 am - 11:03 pm

SMF

MLI

9h 41m

2 stops

11:55 am - 10:21 pm

MLI

SMF

12h 26m

2 stops

$342American Airlines

Wed, Sep 9 - Tue, Sep 15

11:05 pm - 8:47 am

SMF

MDW

7h 42m

1 stop

2:12 pm - 8:35 pm

MDW

SMF

8h 23m

1 stop

$343Delta

Wed, Apr 22 - Tue, Apr 28

10:40 pm - 10:26 am

SMF

MLI

9h 46m

1 stop

5:00 pm - 10:40 pm

MLI

SMF

7h 40m

1 stop

$364Delta

Tue, Sep 15 - Mon, Sep 21

11:59 pm - 10:04 am

SMF

PIA

8h 05m

1 stop

5:33 pm - 10:37 pm

PIA

SMF

7h 04m

1 stop

$369United Airlines

Sat, May 16 - Sat, May 23

Alaska Airlines flights from Sacramento to Illinois

Our best Alaska Airlines deals on Sacramento to Illinois flight tickets

Alaska Airlines

Apr 25

SMF2:22 pmSacramento Intl

14h 18m

2 stops

ORD6:40 amChicago O'Hare Intl

May 2

ORD3:52 pmChicago O'Hare Intl

9h 02m

1 stop

SMF10:54 pmSacramento Intl

$308

Alaska Airlines

Sep 10

SMF12:52 pmSacramento Intl

9h 05m

1 stop

ORD11:57 pmChicago O'Hare Intl

Sep 15

ORD6:01 amChicago O'Hare Intl

8h 14m

1 stop

SMF12:15 pmSacramento Intl

$311

Alaska Airlines

Apr 23

SMF8:07 amSacramento Intl

13h 52m

2 stops

ORD11:59 pmChicago O'Hare Intl

Apr 24

ORD3:52 pmChicago O'Hare Intl

9h 02m

1 stop

SMF10:54 pmSacramento Intl

$321

United Airlines flights from Sacramento to Illinois

Our best United Airlines deals on Sacramento to Illinois flight tickets

United Airlines

May 19

SMF11:59 pmSacramento Intl

6h 40m

1 stop

STL8:39 amLambert-St Louis

May 28

STL7:23 pmLambert-St Louis

6h 36m

1 stop

SMF11:59 pmSacramento Intl

$233

United Airlines

Apr 9

SMF11:35 amSacramento Intl

8h 53m

1 stop

STL10:28 pmLambert-St Louis

Apr 11

STL6:30 amLambert-St Louis

7h 23m

1 stop

SMF11:53 amSacramento Intl

$317

United Airlines

Apr 22

SMF7:00 amSacramento Intl

4h 13m

ORD1:13 pmChicago O'Hare Intl

Apr 29

ORD8:04 pmChicago O'Hare Intl

4h 44m

SMF10:48 pmSacramento Intl

$323

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Tue 4/21

11:00 pm-7:45 am

1 stop6h 45m

Lambert-St Louis

Tue 4/28

5:40 pm-10:25 pm

1 stop6h 45m

$209

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Tue 4/21

8:15 am-5:55 pm

2 stops7h 40m

Lambert-St Louis

Tue 4/28

2:30 pm-8:05 pm

1 stop7h 35m

$214

Quickest round-trip

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Tue 5/19

11:59 pm-8:39 am

1 stop6h 40m

Lambert-St Louis

Thu 5/28

7:23 pm-11:59 pm

1 stop6h 36m

$233

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Sat 4/25

2:22 pm-6:40 am

2 stops14h 18m

Chicago O'Hare Intl

Sat 5/2

3:52 pm-10:54 pm

1 stop9h 02m

$308

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Thu 6/25

8:36 am-6:57 pm

1 stop8h 21m

Chicago O'Hare Intl

Mon 6/29

7:59 pm-9:36 am

1 stop15h 37m

$311

SacramentoMoline

SMF - MLI

SMFMLI

Sacramento Intl

Wed 9/9

5:31 am-4:01 pm

1 stop8h 30m

Moline Quad-City

Tue 9/15

7:20 am-3:32 pm

2 stops10h 12m

$336

SacramentoMoline

SMF - MLI

SMFMLI

Sacramento Intl

Wed 9/9

11:22 am-11:03 pm

2 stops9h 41m

Moline Quad-City

Tue 9/15

11:55 am-10:21 pm

2 stops12h 26m

$342

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Wed 4/22

11:05 pm-8:47 am

1 stop7h 42m

Chicago Midway

Tue 4/28

2:12 pm-8:35 pm

1 stop8h 23m

$343

SacramentoMoline

SMF - MLI

SMFMLI

Sacramento Intl

Tue 9/15

10:40 pm-10:26 am

1 stop9h 46m

Moline Quad-City

Mon 9/21

5:00 pm-10:40 pm

1 stop7h 40m

$364

SacramentoPeoria

SMF - PIA

SMFPIA

Sacramento Intl

Sat 5/16

11:59 pm-10:04 am

1 stop8h 05m

Greater Peoria

Sat 5/23

5:33 pm-10:37 pm

1 stop7h 04m

$369

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 Sacramento to Illinois

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 Illinois?

The cheapest month to fly to Illinois from Sacramento is in January. Flight prices, which tend to average around $388, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of January, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $406.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from Sacramento to Illinois is on a Tuesday when prices can be found for as low as $474. Flights from Sacramento to Illinois on a Sunday will generally be more expensive and average around $541. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

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

Our most recent data shows that the best time of day to fly to Illinois is in the afternoon. Flights from Sacramento to Illinois during this time can be as low as $472. Flights at noon are often more expensive with an average ticket price of $518.

What is the cheapest Sacramento Intl to Illinois flight route?

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

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

You are more likely to see cheaper flights to Illinois from Sacramento when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $461 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from Sacramento for as low as $317 on momondo.

What cabin class options are available on Sacramento Intl to Illinois flights?

There are 4 cabin classes available to choose from on Sacramento Intl to Illinois 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 Sacramento to Illinois flights?

You could potentially save up to 16% on your flight if you consider stops on a Sacramento to Illinois flight.

Cheap Sacramento to Illinois flight deals and tips

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

Best Price Found	$209
Fastest flight time	3h 35m
Direct flights	Every day
Airports in Illinois	98 airports

The best one-way flight to Illinois from Sacramento in the past 72 hours is $209. The best round-trip flight deal from Sacramento to Illinois found on momondo in the last 72 hours is $410.

The fastest flight from Sacramento to Illinois takes 3h 35m

Direct flights go from Sacramento to Illinois every day.

There are 98 airports in Illinois. From Sacramento there are direct flights to Chicago O'Hare Intl (ORD), Chicago Midway (MDW), Lambert-St Louis (STL).

Search flight deals

When did momondo last update prices for flights from Sacramento Intl Airport to Illinois?
Prices for flights from Sacramento Intl Airport to Illinois refresh daily.
How many operators does momondo search for flights from Sacramento Intl Airport to Illinois?
There are 7 operators available for flights from Sacramento Intl Airport to Illinois as of March 2026.
How old do you have to be to fly from Sacramento Intl Airport to Illinois?
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 Sacramento Intl Airport to Illinois.
What documentation or ID do you need to fly to Illinois?
The required travel and health documents for your Illinois 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 Illinois. 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 Sacramento to Illinois?
momondo data reveals that the most frequently booked plane model on the route from Sacramento to Illinois is Boeing 737 MAX 8, representing 24.27% of all bookings. The subsequent popular models are Boeing 737-800 at 17.38%, Boeing 737-900 at 14.00%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 12.32%.

Best airlines flying from Sacramento to Illinois

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

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $158	Free Cancellation	Rating 5.7 3,009 reviews	Search Frontier flights
Spirit Airlines	PriceFrom $171	Free Cancellation	Rating 6.3 8,561 reviews	Search Spirit Airlines flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,360 reviews	Search Delta flights
Alaska Airlines	PriceFrom $194	Free Cancellation	Rating 7.9 12,138 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $205	Free Cancellation	Rating 7.1 11,530 reviews	Search American Airlines flights
United Airlines	PriceFrom $274	Free Cancellation	Rating 7.4 9,517 reviews	Search United Airlines flights
Southwest	PriceFrom $335	Free Cancellation	Rating 8.0 4,329 reviews	Search Southwest flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Sacramento to Illinois for you.

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

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

How can momondo help me find flights from Sacramento to Illinois?

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

Price alerts on flights to Illinois from Sacramento are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.