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

Delta, United Airlines, 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 June 2026, 12 flights take off from Sacramento and land in Illinois each day. The most common flight departure time for this route is 7:00AM, with 44% of daily flights taking off at noon.

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

As of June 2026, there are 89 flights per week flying from Sacramento to Illinois. The most common day of the week flights depart is Thu, with 20% of flights taking off on this day.

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 49% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 8 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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 6 operators available for flights from Sacramento Intl Airport to Illinois as of June 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.

$109 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.

6:30 pm - 6:51 pm

SMF

STL

22h 21m

1 stop

7:10 pm - 4:04 pm

STL

SMF

22h 54m

1 stop

$230Frontier

Mon, Jun 29 - Mon, Jul 6

10:50 am - 8:38 pm

SMF

STL

7h 48m

1 stop

5:10 am - 9:37 am

STL

SMF

6h 27m

1 stop

$237United Airlines

Tue, Sep 15 - Wed, Sep 23

9:41 am - 5:37 pm

SMF

STL

5h 56m

1 stop

6:25 am - 12:00 pm

STL

SMF

7h 35m

1 stop

$241Delta

Wed, Sep 16 - Wed, Sep 30

12:52 pm - 11:59 pm

SMF

ORD

9h 07m

1 stop

7:20 am - 3:40 pm

ORD

SMF

10h 20m

1 stop

$369Alaska Airlines

Thu, Sep 10 - Tue, Sep 15

5:37 pm - 1:21 pm

SMF

ORD

17h 44m

1 stop

6:20 am - 12:53 pm

ORD

SMF

8h 33m

1 stop

$372Alaska Airlines

Fri, Jun 19 - Tue, Jun 23

3:08 pm - 12:08 am

SMF

PIA

7h 00m

1 stop

4:43 pm - 11:34 pm

PIA

SMF

8h 51m

1 stop

$379American Airlines

Tue, Sep 15 - Tue, Sep 22

11:55 pm - 5:50 am

SMF

MDW

3h 55mnonstop

8:40 pm - 11:00 pm

MDW

SMF

4h 20mnonstop

$381Southwest

Wed, Oct 21 - Tue, Oct 27

12:18 pm - 10:47 pm

SMF

BMI

8h 29m

1 stop

4:19 pm - 10:54 pm

BMI

SMF

8h 35m

1 stop

$384Delta

Tue, Jun 23 - Thu, Jul 2

11:55 pm - 5:50 am

SMF

MDW

3h 55mnonstop

3:30 pm - 7:45 pm

MDW

SMF

6h 15m

1 stop

$387Southwest

Wed, Oct 21 - Tue, Oct 27

11:59 pm - 9:14 am

SMF

PIA

7h 15m

1 stop

7:11 pm - 11:47 pm

PIA

SMF

6h 36m

1 stop

$419American Airlines

Sat, Jun 20 - Mon, Jun 22

Alaska Airlines flights from Sacramento to Illinois

Our best Alaska Airlines deals on Sacramento to Illinois flight tickets

Alaska Airlines

Sep 10

SMF12:52 pmSacramento Intl

9h 07m

1 stop

ORD11:59 pmChicago O'Hare Intl

Sep 15

ORD7:20 amChicago O'Hare Intl

10h 20m

1 stop

SMF3:40 pmSacramento Intl

$369

Alaska Airlines

Jun 19

SMF5:37 pmSacramento Intl

17h 44m

1 stop

ORD1:21 pmChicago O'Hare Intl

Jun 23

ORD6:20 amChicago O'Hare Intl

8h 33m

1 stop

SMF12:53 pmSacramento Intl

$372

Alaska Airlines

Jul 14

SMF1:30 pmSacramento Intl

8h 06m

1 stop

ORD11:36 pmChicago O'Hare Intl

Jul 18

ORD5:59 pmChicago O'Hare Intl

7h 33m

1 stop

SMF11:32 pmSacramento Intl

$374

American Airlines flights from Sacramento to Illinois

Our best American Airlines deals on Sacramento to Illinois flight tickets

American Airlines

Jul 9

SMF3:05 pmSacramento Intl

7h 11m

1 stop

STL12:16 amLambert-St Louis

Jul 15

STL5:32 amLambert-St Louis

6h 36m

1 stop

SMF10:08 amSacramento Intl

$316

American Airlines

Jul 13

SMF3:05 pmSacramento Intl

7h 11m

1 stop

STL12:16 amLambert-St Louis

Jul 16

STL7:24 pmLambert-St Louis

6h 35m

1 stop

SMF11:59 pmSacramento Intl

$348

American Airlines

Sep 15

SMF3:08 pmSacramento Intl

7h 00m

1 stop

PIA12:08 amGreater Peoria

Sep 22

PIA4:43 pmGreater Peoria

8h 51m

1 stop

SMF11:34 pmSacramento Intl

$379

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Mon 6/29

6:30 pm-6:51 pm

1 stop22h 21m

Lambert-St Louis

Mon 7/6

7:10 pm-4:04 pm

1 stop22h 54m

$230

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Tue 9/15

10:50 am-8:38 pm

1 stop7h 48m

Lambert-St Louis

Wed 9/23

5:10 am-9:37 am

1 stop6h 27m

$237

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Wed 9/16

9:41 am-5:37 pm

1 stop5h 56m

Lambert-St Louis

Wed 9/30

6:25 am-12:00 pm

1 stop7h 35m

$241

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Thu 9/10

12:52 pm-11:59 pm

1 stop9h 07m

Chicago O'Hare Intl

Tue 9/15

7:20 am-3:40 pm

1 stop10h 20m

$369

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Fri 6/19

5:37 pm-1:21 pm

1 stop17h 44m

Chicago O'Hare Intl

Tue 6/23

6:20 am-12:53 pm

1 stop8h 33m

$372

SacramentoPeoria

SMF - PIA

SMFPIA

Sacramento Intl

Tue 9/15

3:08 pm-12:08 am

1 stop7h 00m

Greater Peoria

Tue 9/22

4:43 pm-11:34 pm

1 stop8h 51m

$379

Quickest round-trip

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Wed 10/21

11:55 pm-5:50 am

Nonstop3h 55m

Chicago Midway

Tue 10/27

8:40 pm-11:00 pm

Nonstop4h 20m

$381

SacramentoBloomington

SMF - BMI

SMFBMI

Sacramento Intl

Tue 6/23

12:18 pm-10:47 pm

1 stop8h 29m

Bloomington-Normal

Thu 7/2

4:19 pm-10:54 pm

1 stop8h 35m

$384

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Wed 10/21

11:55 pm-5:50 am

Nonstop3h 55m

Chicago Midway

Tue 10/27

3:30 pm-7:45 pm

1 stop6h 15m

$387

SacramentoPeoria

SMF - PIA

SMFPIA

Sacramento Intl

Sat 6/20

11:59 pm-9:14 am

1 stop7h 15m

Greater Peoria

Mon 6/22

7:11 pm-11:47 pm

1 stop6h 36m

$419

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 September. Flight prices, which tend to average around $84, 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 September, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $118.

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 $478. Flights from Sacramento to Illinois on a Sunday will generally be more expensive and average around $555. 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 $476. Flights at noon are often more expensive with an average ticket price of $551.

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 from Sacramento 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 $463 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 $252 on momondo.

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

There are 4 cabin classes available to choose from on Sacramento 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 12% 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	$221
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 $221. The best round-trip flight deal from Sacramento to Illinois found on momondo in the last 72 hours is $444.

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 Midway (MDW), Lambert-St Louis (STL).

Search flight deals

Frequently asked questions about flying from Sacramento to Illinois

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 6 operators available for flights from Sacramento Intl Airport to Illinois as of June 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 737-800, representing 24.38% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 21.18%, Boeing 737-900 at 18.17%, and Boeing 737-800 Passenger/BBJ2 (winglets) at 9.26%.

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 $165	Free Cancellation	Rating 5.6 2,908 reviews	Search Frontier flights
Delta	PriceFrom $179	Free Cancellation	Rating 7.8 8,395 reviews	Search Delta flights
Alaska Airlines	PriceFrom $190	Free Cancellation	Rating 7.9 12,470 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $205	Free Cancellation	Rating 7.1 11,651 reviews	Search American Airlines flights
United Airlines	PriceFrom $307	Free Cancellation	Rating 7.4 9,777 reviews	Search United Airlines flights
Southwest	PriceFrom $335	Free Cancellation	Rating 8.0 4,258 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.