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 51% of people opting to fly with this airline when traveling to Illinois. Keep in mind that there are 7 different airlines that fly to Illinois on a routine basis, so you have a few additional options to choose from.

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

Delta, Frontier, 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 week?

As of August 2026, there are 78 flights per week flying from Sacramento to Illinois. The most common day of the week flights depart is Wed, with 19% of flights taking off on this day.

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

As of August 2026, 11 flights take off from Sacramento and land in Illinois each day. The most common flight departure time for this route is 7:00AM, with 60% 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 6 operators available for flights from Sacramento Intl Airport to Illinois as of August 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.

$89 Cheap Flights from Sacramento to Illinois in 2026

Discover deals from 900+ travel sites with momondo.

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.

8:08 am - 5:10 pmSMF Sacramento Intl-STL Lambert-St Louis

7h 02m1 stop Portland

6:29 am - 2:05 pmSTL Lambert-St Louis-SMF Sacramento Intl

9h 36m1 stop Seattle/Tacoma Intl

$163Alaska Airlines

Thu, Sep 24 - Sat, Sep 26

8:08 am - 5:10 pmSMF Sacramento Intl-STL Lambert-St Louis

7h 02m1 stop Portland

7:36 pm - 9:19 amSTL Lambert-St Louis-SMF Sacramento Intl

15h 43m1 stop Seattle/Tacoma Intl

$177Alaska Airlines

Thu, Sep 17 - Sun, Sep 20

11:52 am - 6:57 pmSMF Sacramento Intl-STL Lambert-St Louis

29h 05m1 stop Denver Intl

8:00 pm - 11:04 amSTL Lambert-St Louis-SMF Sacramento Intl

17h 04m1 stop Denver Intl

$198Frontier

Fri, Oct 23 - Mon, Oct 26

11:35 am - 4:34 pmSMF Sacramento Intl-STL Lambert-St Louis

26h 59m2 stops Denver Intl Orlando

8:10 pm - 10:58 amSTL Lambert-St Louis-SMF Sacramento Intl

16h 48m1 stop Denver Intl

$220Frontier

Thu, Sep 24 - Mon, Sep 28

7:41 pm - 8:40 amSMF Sacramento Intl-STL Lambert-St Louis

10h 59m2 stops Seattle/Tacoma Intl Minneapolis St Paul

2:25 pm - 10:45 pmSTL Lambert-St Louis-SMF Sacramento Intl

10h 20m2 stops Salt Lake City Seattle/Tacoma Intl

$303Delta

Mon, Sep 21 - Wed, Sep 23

5:37 pm - 8:53 amSMF Sacramento Intl-STL Lambert-St Louis

13h 16m2 stops Seattle/Tacoma Intl Minneapolis St Paul

10:31 am - 10:46 pmSTL Lambert-St Louis-SMF Sacramento Intl

14h 15m2 stops Detroit Metropolitan Wayne County Seattle/Tacoma Intl

$303Delta

Tue, Oct 20 - Wed, Oct 28

3:08 pm - 12:05 amSMF Sacramento Intl-MLI Moline Quad-City

6h 57m1 stop Chicago O'Hare Intl

4:38 pm - 11:09 pmMLI Moline Quad-City-SMF Sacramento Intl

8h 31m1 stop Dallas/Fort Worth

$341American Airlines

Tue, Sep 29 - Tue, Oct 6

3:08 pm - 12:05 amSMF Sacramento Intl-MLI Moline Quad-City

6h 57m1 stop Chicago O'Hare Intl

6:00 am - 1:02 pmMLI Moline Quad-City-SMF Sacramento Intl

9h 02m1 stop Chicago O'Hare Intl

$341American Airlines

Tue, Sep 29 - Tue, Oct 6

2:25 pm - 10:38 pmSMF Sacramento Intl-MLI Moline Quad-City

6h 13m1 stop Chicago O'Hare Intl

6:32 am - 3:01 pmMLI Moline Quad-City-SMF Sacramento Intl

10h 29m2 stops Chicago O'Hare Intl Los Angeles Los Angeles

$346United Airlines

Tue, Sep 29 - Tue, Oct 6

7:00 am - 1:13 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 13mnonstop

8:08 pm - 10:46 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 38mnonstop

$357United Airlines

Tue, Oct 20 - Sat, Oct 24

Cheap last minute flights

Enter your travel dates to find the best prices.

7:47 pm - 6:17 amSMF Sacramento Intl-ORD Chicago O'Hare Intl

8h 30m1 stop Los Angeles Los Angeles

6:30 am - 10:58 amORD Chicago O'Hare Intl-SMF Sacramento Intl

6h 28m1 stop Denver Intl

$350Frontier

Mon, Aug 31 - Wed, Sep 9

7:47 pm - 6:17 amSMF Sacramento Intl-ORD Chicago O'Hare Intl

8h 30m1 stop Los Angeles Los Angeles

9:20 pm - 5:34 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

22h 14m1 stop Los Angeles Los Angeles

$356Frontier

Fri, Aug 28 - Wed, Sep 2

6:29 pm - 7:02 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

22h 33m1 stop Las Vegas Harry Reid Intl

2:18 pm - 7:24 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

7h 06m1 stop San Diego

$376Multiple Airlines

Thu, Aug 27 - Sun, Sep 6

7:47 pm - 6:17 amSMF Sacramento Intl-ORD Chicago O'Hare Intl

8h 30m1 stop Los Angeles Los Angeles

8:17 pm - 10:08 amORD Chicago O'Hare Intl-SMF Sacramento Intl

15h 51m1 stop San Diego

$400Multiple Airlines

Fri, Aug 28 - Mon, Aug 31

1:03 pm - 11:59 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

8h 56m1 stop Seattle/Tacoma Intl

8:17 pm - 10:08 amORD Chicago O'Hare Intl-SMF Sacramento Intl

15h 51m1 stop San Diego

$404Alaska Airlines

Fri, Aug 28 - Mon, Aug 31

10:47 am - 11:59 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

11h 12m1 stop San Diego

8:17 pm - 10:08 amORD Chicago O'Hare Intl-SMF Sacramento Intl

15h 51m1 stop San Diego

$404Alaska Airlines

Fri, Aug 28 - Mon, Aug 31

7:00 am - 1:14 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 14mnonstop

3:40 pm - 6:18 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 38mnonstop

$420United Airlines

Sat, Aug 29 - Sat, Sep 5

10:50 am - 7:30 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

6h 40m1 stop Denver Intl

9:09 am - 11:51 amORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 42mnonstop

$426United Airlines

Sat, Aug 29 - Sat, Sep 5

7:25 am - 1:20 pmSMF Sacramento Intl-MDW Chicago Midway

3h 55mnonstop

2:40 pm - 7:30 pmMDW Chicago Midway-SMF Sacramento Intl

6h 50m1 stop Burbank Bob Hope

$430Southwest

Sat, Aug 29 - Sat, Sep 5

5:20 pm - 4:30 amSMF Sacramento Intl-MDW Chicago Midway

9h 10m1 stop San Diego

2:05 pm - 6:30 pmMDW Chicago Midway-SMF Sacramento Intl

6h 25m1 stop Denver Intl

$440Southwest

Sat, Aug 29 - Sat, Sep 5

Cheap direct flights

Enter your travel dates to find the best prices.

3:08 pm - 9:35 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 27mnonstop

11:47 am - 2:18 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 31mnonstop

$357American Airlines

Wed, Sep 23 - Tue, Sep 29

3:08 pm - 9:35 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 27mnonstop

9:14 pm - 11:59 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 45mnonstop

$357American Airlines

Tue, Sep 22 - Tue, Oct 6

7:00 am - 1:13 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 13mnonstop

8:08 pm - 10:46 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 38mnonstop

$357United Airlines

Tue, Oct 20 - Sat, Oct 24

9:41 am - 3:55 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 14mnonstop

8:08 pm - 10:46 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 38mnonstop

$357United Airlines

Wed, Oct 14 - Thu, Oct 15

6:35 am - 12:30 pmSMF Sacramento Intl-MDW Chicago Midway

3h 55mnonstop

10:00 am - 12:35 pmMDW Chicago Midway-SMF Sacramento Intl

4h 35mnonstop

$357Southwest

Thu, Jan 28 - Tue, Feb 2

6:25 am - 12:20 pmSMF Sacramento Intl-MDW Chicago Midway

3h 55mnonstop

10:05 am - 12:40 pmMDW Chicago Midway-SMF Sacramento Intl

4h 35mnonstop

$357Southwest

Sat, Nov 7 - Wed, Nov 11

10:57 pm - 5:00 amSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 03mnonstop

10:30 am - 1:17 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 47mnonstop

$357American Airlines

Wed, Oct 21 - Tue, Oct 27

3:08 pm - 9:35 pmSMF Sacramento Intl-ORD Chicago O'Hare Intl

4h 27mnonstop

10:15 am - 1:02 pmORD Chicago O'Hare Intl-SMF Sacramento Intl

4h 47mnonstop

$357American Airlines

Thu, Oct 1 - Mon, Oct 5

11:55 pm - 5:50 amSMF Sacramento Intl-MDW Chicago Midway

3h 55mnonstop

7:45 pm - 10:15 pmMDW Chicago Midway-SMF Sacramento Intl

4h 30mnonstop

$357Southwest

Mon, Oct 19 - Sat, Oct 24

11:55 pm - 5:50 amSMF Sacramento Intl-MDW Chicago Midway

3h 55mnonstop

8:40 pm - 11:10 pmMDW Chicago Midway-SMF Sacramento Intl

4h 30mnonstop

$357Southwest

Tue, Oct 13 - Tue, Oct 20

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Frontier flights from Sacramento to Illinois

Our best Frontier deals on Sacramento to Illinois flight tickets

Frontier

Oct 23

SMF11:52 amSacramento Intl

29h 05m

1 stop

STL6:57 pmLambert-St Louis

Oct 26

STL8:00 pmLambert-St Louis

17h 04m

1 stop

SMF11:04 amSacramento Intl

$198

Frontier

Sep 24

SMF11:35 amSacramento Intl

26h 59m

2 stops

STL4:34 pmLambert-St Louis

Sep 28

STL8:10 pmLambert-St Louis

16h 48m

1 stop

SMF10:58 amSacramento Intl

$220

Frontier

Oct 20

SMF11:52 amSacramento Intl

25h 32m

1 stop

STL3:24 pmLambert-St Louis

Oct 28

STL4:18 pmLambert-St Louis

20h 51m

1 stop

SMF11:09 amSacramento Intl

$238

United Airlines flights from Sacramento to Illinois

Our best United Airlines deals on Sacramento to Illinois flight tickets

United Airlines

Sep 22

SMF2:23 pmSacramento Intl

4h 15m

ORD8:38 pmChicago O'Hare Intl

Sep 26

ORD4:10 pmChicago O'Hare Intl

4h 38m

SMF6:48 pmSacramento Intl

$357

United Airlines

Nov 11

SMF7:00 amSacramento Intl

7h 47m

1 stop

PIA4:47 pmGreater Peoria

Nov 16

PIA5:30 pmGreater Peoria

7h 10m

1 stop

SMF10:40 pmSacramento Intl

$359

United Airlines

Oct 27

SMF10:55 amSacramento Intl

7h 10m

1 stop

ORD8:05 pmChicago O'Hare Intl

Oct 31

ORD9:11 amChicago O'Hare Intl

4h 49m

SMF12:00 pmSacramento Intl

$363

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SacramentoSt. Louis

SMF Sacramento Intl - STL Lambert-St Louis

SMFSTL

Sacramento Intl

Thu 9/24

8:08 am-5:10 pm

1 stop7h 02m

Lambert-St Louis

Sat 9/26

6:29 am-2:05 pm

1 stop9h 36m

$163

SacramentoSt. Louis

SMF Sacramento Intl - STL Lambert-St Louis

SMFSTL

Sacramento Intl

Thu 9/17

8:08 am-5:10 pm

1 stop7h 02m

Lambert-St Louis

Sun 9/20

7:36 pm-9:19 am

1 stop15h 43m

$177

SacramentoSt. Louis

SMF Sacramento Intl - STL Lambert-St Louis

SMFSTL

Sacramento Intl

Fri 10/23

11:52 am-6:57 pm

1 stop29h 05m

Lambert-St Louis

Mon 10/26

8:00 pm-11:04 am

1 stop17h 04m

$198

SacramentoSt. Louis

SMF Sacramento Intl - STL Lambert-St Louis

SMFSTL

Sacramento Intl

Thu 9/24

11:35 am-4:34 pm

2 stops26h 59m

Lambert-St Louis

Mon 9/28

8:10 pm-10:58 am

1 stop16h 48m

$220

SacramentoSt. Louis

SMF Sacramento Intl - STL Lambert-St Louis

SMFSTL

Sacramento Intl

Mon 9/21

7:41 pm-8:40 am

2 stops10h 59m

Lambert-St Louis

Wed 9/23

2:25 pm-10:45 pm

2 stops10h 20m

$303

SacramentoSt. Louis

SMF Sacramento Intl - STL Lambert-St Louis

SMFSTL

Sacramento Intl

Tue 10/20

5:37 pm-8:53 am

2 stops13h 16m

Lambert-St Louis

Wed 10/28

10:31 am-10:46 pm

2 stops14h 15m

$303

SacramentoMoline

SMF Sacramento Intl - MLI Moline Quad-City

SMFMLI

Sacramento Intl

Tue 9/29

3:08 pm-12:05 am

1 stop6h 57m

Moline Quad-City

Tue 10/6

4:38 pm-11:09 pm

1 stop8h 31m

$341

SacramentoMoline

SMF Sacramento Intl - MLI Moline Quad-City

SMFMLI

Sacramento Intl

Tue 9/29

3:08 pm-12:05 am

1 stop6h 57m

Moline Quad-City

Tue 10/6

6:00 am-1:02 pm

1 stop9h 02m

$341

SacramentoMoline

SMF Sacramento Intl - MLI Moline Quad-City

SMFMLI

Sacramento Intl

Tue 9/29

2:25 pm-10:38 pm

1 stop6h 13m

Moline Quad-City

Tue 10/6

6:32 am-3:01 pm

2 stops10h 29m

$346

Quickest round-trip

SacramentoChicago

SMF Sacramento Intl - ORD Chicago O'Hare Intl

SMFORD

Sacramento Intl

Tue 10/20

7:00 am-1:13 pm

Nonstop4h 13m

Chicago O'Hare Intl

Sat 10/24

8:08 pm-10:46 pm

Nonstop4h 38m

$357

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 $409, 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 February is also cheap. Prices for this month can be found on momondo for an average of $419.

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 $485. Flights from Sacramento to Illinois on a Sunday will generally be more expensive and average around $593. 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 evening. Flights from Sacramento to Illinois during this time can be as low as $488. Flights at noon are often more expensive with an average ticket price of $567.

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 $475 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 $403 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?

No. A direct flight is the cheapest option for a flight between Sacramento to Illinois.

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	$89
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 $89. The best round-trip flight deal from Sacramento to Illinois found on momondo in the last 72 hours is $163.

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 August 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 22.72% of all bookings. The subsequent popular models are Boeing 737 MAX 8 at 20.20%, Boeing 737-900 at 16.75%, and Boeing 737 MAX 9 at 10.64%.

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 2,647 reviews	Search Frontier flights
Delta	PriceFrom $179	Free Cancellation	Rating 7.8 8,529 reviews	Search Delta flights
Alaska Airlines	PriceFrom $190	Free Cancellation	Rating 7.9 12,841 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $288	Free Cancellation	Rating 7.1 11,995 reviews	Search American Airlines flights
United Airlines	PriceFrom $307	Free Cancellation	Rating 7.4 10,123 reviews	Search United Airlines flights
Southwest	PriceFrom $371	Free Cancellation	Rating 8.0 4,204 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.