How long is the flight from Sacramento to Illinois?

Departing from Sacramento to Illinois will take you 6h 37m. Airlines will cover a distance of 1776 mi. This flight may include one or multiple stops.

What are the cheapest airlines to fly from Sacramento to Illinois one-way?

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $58. American Airlines flights start at $82 while deals on Frontier start at $91 one-way.

In terms of precipitation, rainfall in Illinois ranges from 1.7 - 4.9 inches per month. August is typically the wettest month, when rainfall can reach 4.9 in. January is typically the driest time to visit Illinois when rainfall is around 1.7 in.

If weather is an important factor for your trip to Illinois, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

What are the most popular routes from Sacramento to Illinois?

The most popular flight routes from Sacramento to Illinois are Sacramento Intl - Chicago O'Hare Intl, Sacramento Intl - Chicago Midway and Sacramento Intl - Lambert-St Louis.

What are the cheapest flights from Sacramento to Illinois?

Looking for the cheapest flight from Sacramento to Illinois? While on average our users pay $1,070, our data indicates the cheapest price to be $153. The most popular route (Sacramento Intl - Chicago O'Hare Intl), is priced around $222.

What are the most reliable airlines from Sacramento to Illinois?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Sacramento to Illinois on time: Lufthansa (83%), Air Canada (82%), United Airlines (77%).

What are the most popular airlines that fly from Sacramento to Illinois?

Before booking your flight from Sacramento to Illinois check out the most popular airlines for this route: United Airlines, American Airlines or Southwest.

What airport do you fly from for flights from Sacramento to Illinois?

Most people fly from Sacramento Intl (SMF) if they book a flight from Sacramento to Illinois. Sacramento Intl is conveniently located just 9.4 mi from Sacramento’s city center.

Can I find deals for flights from Sacramento to Illinois that include hotel bookings?

Yes. In addition to deals on Sacramento to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Sacramento to Illinois?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sacramento to Illinois.

Can I find deals for business class flights from Sacramento to Illinois?

Yes. Cheapflights offers flight deals from Sacramento to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$85+ Flights from Sacramento to Illinois

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Cheap flight deals from Sacramento to Illinois

Cheapest flights from Sacramento to Illinois
Explore the most affordable flight options available from Sacramento to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

Wed 12/246:16 pmSMF - ORD

1 stop18h 01mFrontier

Mon 1/57:00 amORD - SMF

1 stop6h 57mFrontier

Deal found 12/14

$325

Fri 12/1912:52 pmSMF - ORD

1 stop9h 20mMultiple Airlines

Wed 1/73:44 pmORD - SMF

1 stop9h 14mMultiple Airlines

Deal found 12/14

$328

Sat 12/138:45 amSMF - STL

1 stop5h 43mUnited Airlines

Mon 12/1511:50 amSTL - SMF

1 stop11h 58mUnited Airlines

Deal found 12/12

$377

Fri 12/2612:52 pmSMF - ORD

1 stop9h 20mFrontier

Sun 1/410:49 pmORD - SMF

1 stop20h 32mFrontier

Deal found 12/13

$377

Sat 12/2712:43 pmSMF - ORD

1 stop9h 19mDelta

Mon 1/56:40 pmORD - SMF

1 stop6h 35mDelta

Deal found 12/12

$379

Sat 12/2711:37 amSMF - ORD

2 stops34h 35mFrontier

Mon 1/57:00 amORD - SMF

1 stop6h 57mFrontier

Deal found 12/12

$397

Wed 12/177:15 amSMF - PIA

1 stop6h 30mAmerican Airlines

Wed 1/143:55 pmPIA - SMF

1 stop9h 35mAmerican Airlines

Deal found 12/13

$400

Tue 12/166:00 amSMF - STL

2 stops8h 50mAmerican Airlines

Thu 12/187:00 amSTL - SMF

1 stop8h 25mAmerican Airlines

Deal found 12/14

$403

Wed 12/1711:23 pmSMF - PIA

2 stops12h 45mUnited Airlines

Wed 1/141:24 pmPIA - SMF

1 stop7h 17mUnited Airlines

Deal found 12/13

$405

Wed 12/315:38 pmSMF - ORD

1 stop18h 59mAlaska Airlines

Sat 1/109:00 amORD - SMF

1 stop15h 58mAlaska Airlines

Deal found 12/13

$406

Sat 12/208:02 pmSMF - ORD

1 stop23h 37mFrontier

Tue 12/233:27 pmORD - SMF

1 stop27h 54mFrontier

Deal found 12/14

$413

Fri 12/2612:52 pmSMF - ORD

1 stop9h 20mFrontier

Fri 1/27:00 amORD - SMF

1 stop6h 57mFrontier

Deal found 12/14

$417

Best flights from Sacramento to Illinois
Discover carefully curated flight deals from Sacramento to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 15, 2025.

Tue 1/203:00 pmSMF - ORD

1 stop6h 37mAlaska Airlines

Sat 1/249:00 amORD - SMF

1 stop12h 02mAlaska Airlines

Deal found 12/14

$262

Thu 2/2611:45 amSMF - STL

2 stops10h 40mDelta

Mon 3/22:22 pmSTL - SMF

2 stops9h 27mDelta

Deal found 12/13

$274

Wed 3/188:50 amSMF - STL

1 stop5h 59mUnited Airlines

Tue 3/319:00 amSTL - SMF

1 stop6h 32mUnited Airlines

Deal found 12/13

$322

Tue 2/1011:35 amSMF - EVV

1 stop7h 58mAmerican Airlines

Wed 3/113:50 pmEVV - SMF

1 stop8h 51mAmerican Airlines

Deal found 12/13

$379

Tue 1/203:00 pmSMF - ORD

1 stop6h 37mAlaska Airlines

Fri 1/236:06 pmORD - SMF

1 stop7h 49mAlaska Airlines

Deal found 12/14

$272

Wed 1/712:30 pmSMF - MDW

1 stop7h 37mDelta

Tue 1/1311:21 amMDW - SMF

1 stop10h 55mDelta

Deal found 12/14

$279

Wed 2/1112:59 pmSMF - ORD

1 stop8h 38mAlaska Airlines

Mon 2/163:54 pmORD - SMF

1 stop20h 22mAlaska Airlines

Deal found 12/14

$272

Tue 2/172:50 pmSMF - ORD

1 stop7h 02mDelta

Sat 2/217:40 amORD - SMF

1 stop8h 40mDelta

Deal found 12/15

$279

Wed 1/712:59 pmSMF - ORD

1 stop8h 38mAlaska Airlines

Mon 1/128:00 amORD - SMF

1 stop29h 23mAlaska Airlines

Deal found 12/12

$282

Tue 1/135:30 amSMF - MDW

2 stops11h 02mDelta

Tue 1/201:49 pmMDW - SMF

1 stop9h 09mDelta

Deal found 12/14

$284

Fri 12/266:16 pmSMF - RFD

1 stop15h 09mMultiple Airlines

Mon 12/298:32 pmRFD - SMF

2 stops46h 49mMultiple Airlines

Deal found 12/12

$733

Thu 1/85:03 pmSMF - ORD

1 stop28h 47mAlaska Airlines

Mon 1/126:06 pmORD - SMF

1 stop21h 59mAlaska Airlines

Deal found 12/14

$283

Sat 1/106:00 amSMF - MDW

1 stop8h 16mDelta

Sun 1/111:49 pmMDW - SMF

1 stop9h 09mDelta

Deal found 12/12

$289

Thu 2/510:50 amSMF - PIA

1 stop8h 49mUnited Airlines

Mon 2/91:24 pmPIA - SMF

1 stop7h 17mUnited Airlines

Deal found 12/12

$399

Mon 2/167:40 pmSMF - ORD

1 stop17h 18mAlaska Airlines

Fri 2/203:54 pmORD - SMF

1 stop7h 20mAlaska Airlines

Deal found 12/13

$287

Thu 1/2212:30 pmSMF - MDW

1 stop7h 52mDelta

Tue 1/271:49 pmMDW - SMF

1 stop9h 09mDelta

Deal found 12/14

$289

Sat 1/2412:58 pmSMF - PIA

1 stop5h 49mUnited Airlines

Tue 1/271:24 pmPIA - SMF

1 stop7h 17mUnited Airlines

Deal found 12/14

$399

Wed 4/152:43 pmSMF - CMI

1 stop5h 57mAmerican Airlines

Sat 4/186:23 amCMI - SMF

1 stop6h 18mAmerican Airlines

Deal found 12/14

$444

Sun 3/17:40 pmSMF - ORD

1 stop26h 19mAlaska Airlines

Wed 3/48:20 amORD - SMF

1 stop17h 23mAlaska Airlines

Deal found 12/14

$287

Thu 1/812:30 pmSMF - MDW

1 stop7h 37mDelta

Wed 1/1411:21 amMDW - SMF

1 stop10h 55mDelta

Deal found 12/14

$289

Wed 12/1711:23 pmSMF - PIA

2 stops12h 45mUnited Airlines

Wed 1/141:24 pmPIA - SMF

1 stop7h 17mUnited Airlines

Deal found 12/13

$405

Tue 1/2010:40 pmSMF - ORD

2 stops12h 38mDelta

Sat 1/246:50 amORD - SMF

2 stops14h 35mDelta

Deal found 12/14

$289

Fri 2/206:00 amSMF - ORD

1 stop8h 33mAlaska Airlines

Sun 2/228:20 amORD - SMF

1 stop27h 45mAlaska Airlines

Deal found 12/15

$297

Wed 3/181:16 pmSMF - STL

2 stops9h 02mDelta

Tue 3/317:15 amSTL - SMF

2 stops13h 54mDelta

Deal found 12/13

$290

Fri 1/91:16 pmSMF - ORD

1 stop8h 34mAlaska Airlines

Sun 1/119:00 amORD - SMF

1 stop15h 58mAlaska Airlines

Deal found 12/14

$297

Sat 2/212:50 pmSMF - ORD

1 stop7h 02mDelta

Sun 3/12:03 pmORD - SMF

2 stops11h 40mDelta

Deal found 12/13

$294

Thu 2/512:58 pmSMF - MLI

1 stop5h 36mUnited Airlines

Mon 2/910:47 amMLI - SMF

2 stops12h 03mUnited Airlines

Deal found 12/12

$474

Fri 3/137:56 pmSMF - MDW

2 stops10h 54mDelta

Tue 3/172:03 pmMDW - SMF

1 stop8h 30mDelta

Deal found 12/13

$296

Wed 5/276:20 pmSMF - STL

1 stop20h 53mAlaska Airlines

Mon 6/16:22 pmSTL - SMF

1 stop7h 15mAlaska Airlines

Deal found 12/13

$326

Wed 12/177:15 amSMF - PIA

1 stop6h 30mAmerican Airlines

Mon 12/225:15 pmPIA - SMF

1 stop9h 17mAmerican Airlines

Deal found 12/13

$674

Last-minute flights from Sacramento to Illinois
Discover last-minute flight deals from Sacramento to Illinois. Data last updated December 15, 2025 and is based on user searches.

Tue 1/67:46 pmSMF - ORD

1 stop25h 51mAlaska Airlines

Wed 1/149:00 amORD - SMF

1 stop15h 58mAlaska Airlines

Deal found 12/13

$262

Tue 1/65:30 amSMF - ORD

1 stop6h 08mDelta

Wed 1/141:55 pmORD - SMF

2 stops11h 21mDelta

Deal found 12/15

$284

Wed 1/712:30 pmSMF - MDW

1 stop7h 37mDelta

Tue 1/1311:21 amMDW - SMF

1 stop10h 55mDelta

Deal found 12/14

$279

Wed 1/712:59 pmSMF - ORD

1 stop8h 38mAlaska Airlines

Wed 1/143:44 pmORD - SMF

1 stop9h 14mAlaska Airlines

Deal found 12/14

$279

Wed 1/712:59 pmSMF - ORD

1 stop8h 38mAlaska Airlines

Mon 1/128:00 amORD - SMF

1 stop29h 23mAlaska Airlines

Deal found 12/12

$282

Thu 1/85:03 pmSMF - ORD

1 stop28h 47mAlaska Airlines

Mon 1/126:06 pmORD - SMF

1 stop21h 59mAlaska Airlines

Deal found 12/14

$283

Fri 1/910:37 amSMF - ORD

1 stop8h 55mMultiple Airlines

Thu 1/153:44 pmORD - SMF

1 stop9h 14mMultiple Airlines

Deal found 12/12

$280

Fri 1/912:02 pmSMF - ORD

1 stop8h 54mMultiple Airlines

Mon 1/123:44 pmORD - SMF

1 stop9h 14mMultiple Airlines

Deal found 12/14

$281

Sat 1/103:49 pmSMF - ORD

1 stop26h 05mFrontier

Thu 1/152:30 pmORD - SMF

1 stop22h 20mFrontier

Deal found 12/14

$264

Mon 1/197:00 amSMF - ORD

1 stop29h 29mAlaska Airlines

Fri 1/238:00 amORD - SMF

1 stop14h 03mAlaska Airlines

Deal found 12/14

$287

Tue 1/203:00 pmSMF - ORD

1 stop6h 37mAlaska Airlines

Fri 1/236:06 pmORD - SMF

1 stop7h 49mAlaska Airlines

Deal found 12/14

$272

Thu 1/221:16 pmSMF - ORD

1 stop8h 34mHawaiian Airlines

Mon 1/263:35 pmORD - SMF

1 stop24h 30mHawaiian Airlines

Deal found 12/13

$263

One-way flights from Sacramento to Illinois
Search for one-way flight options from Sacramento to Illinois. Find affordable one-way fares based on user searches. Data last updated December 15, 2025.

Fri 1/1611:45 amSMF - STL

1 stop25h 03mFrontier

Deal found 12/15

$85

Sun 1/1110:37 amSMF - STL

1 stop23h 35mFrontier

Deal found 12/13

$90

Thu 1/151:23 pmSMF - STL

1 stop27h 09mFrontier

Deal found 12/15

$97

Mon 1/122:09 pmSMF - STL

2 stops46h 39mFrontier

Deal found 12/15

$100

Fri 1/912:02 pmSMF - STL

1 stop20h 00mFrontier

Deal found 12/13

$107

Sat 1/174:20 pmSMF - STL

1 stop18h 20mFrontier

Deal found 12/15

$127

Tue 1/136:30 amSMF - STL

2 stops13h 05mDelta

Deal found 12/15

$137

Thu 3/127:56 pmSMF - MDW

2 stops10h 54mDelta

Deal found 12/13

$157

Sun 1/259:35 amSMF - ORD

2 stops12h 18mDelta

Deal found 12/15

$157

Mon 1/122:09 pmSMF - MDW

3 stops30h 10mMultiple Airlines

Deal found 12/13

$158

Thu 1/82:19 pmSMF - ORD

3 stops27h 19mMultiple Airlines

Deal found 12/13

$158

Mon 1/1911:45 amSMF - MDW

1 stop6h 09mFrontier

Deal found 12/13

$159

Find flight deals from Sacramento to Illinois

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$262 (Alaska Airlines)
One-way from	$85 (Kiwi.com)
Popular in	December
Cheapest in	February
Average price	$458

Provider with most accurate pricing for San Francisco-Chicago (CHI) flight deals.

Search Deals

Provider most trusted by Cheapflights users for San Francisco-Chicago (CHI) flights.

Search Deals

From Sacramento Intl to Illinois

Search Deals

One-way flight from Sacramento Intl to Illinois

Search Deals

Highest demand for flights based on searches. 14% potential increase in price ($58 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($10 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Cheapflights Fare Finder

Use the filters below to find and compare flights from Sacramento to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Tue 1/20

3:00 pm-11:37 pm

1 stop6h 37m

Chicago O'Hare Intl

Sat 1/24

9:00 am-7:02 pm

1 stop12h 02m

$262

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Tue 1/20

3:00 pm-11:37 pm

1 stop6h 37m

Chicago O'Hare Intl

Fri 1/23

6:06 pm-11:55 pm

1 stop7h 49m

$272

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Wed 2/11

12:59 pm-11:37 pm

1 stop8h 38m

Chicago O'Hare Intl

Mon 2/16

3:54 pm-10:16 am

1 stop20h 22m

$272

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Thu 2/26

11:45 am-12:25 am

2 stops10h 40m

Lambert-St Louis

Mon 3/2

2:22 pm-9:49 pm

2 stops9h 27m

$274

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Wed 1/7

12:30 pm-10:07 pm

1 stop7h 37m

Chicago Midway

Tue 1/13

11:21 am-8:16 pm

1 stop10h 55m

$279

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Tue 2/17

2:50 pm-11:52 pm

1 stop7h 02m

Chicago O'Hare Intl

Sat 2/21

7:40 am-2:20 pm

1 stop8h 40m

$279

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Wed 1/7

12:59 pm-11:37 pm

1 stop8h 38m

Chicago O'Hare Intl

Mon 1/12

8:00 am-11:23 am

1 stop29h 23m

$282

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Thu 1/8

5:03 pm-11:50 pm

1 stop28h 47m

Chicago O'Hare Intl

Mon 1/12

6:06 pm-2:05 pm

1 stop21h 59m

$283

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Tue 1/13

5:30 am-6:32 pm

2 stops11h 02m

Chicago Midway

Tue 1/20

1:49 pm-8:58 pm

1 stop9h 09m

$284

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Mon 2/16

7:40 pm-2:58 pm

1 stop17h 18m

Chicago O'Hare Intl

Fri 2/20

3:54 pm-9:14 pm

1 stop7h 20m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 60 results

...

Best time to book a flight from Sacramento to Illinois

Have a flexible travel schedule? Discover the best time to fly to Illinois from Sacramento with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Sacramento to Illinois

What is the cheapest month to book a flight from Sacramento to Illinois?

Currently, April is the cheapest month in which you can book a flight from Sacramento to Illinois (average of $126). Flying from Sacramento to Illinois in December is currently the most expensive (average of $233). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SMF to IL?

A simple way to save on the total cost of your ticket is to fly from Sacramento to Illinois in the afternoon. If you’re flexible enough to do this you can expect to save up to 31% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from Sacramento to Illinois?

Travelers seeking maximum savings on their Sacramento to Illinois flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Illinois

See what other customers who have flown with Southwest, Delta, and United Airlines from Sacramento to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Southwest

7.9

Good

4,250 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Delta

7.9

Good

8,007 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

United Airlines

7.4

Good

9,092 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

American Airlines

7.2

Good

11,052 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Spirit Airlines

6.3

Okay

8,185 reviews

Southwest

7.9

Good

4,250 reviews

Reviews

1 / 20

10.0

Excellent

William Drew,Nov 2025

SJC - HNL

Flight crew was amazing! Usually they're very good on Southwest, but this crew went above and beyond. I have never ever seen so many rounds of drink service on a flight before.

Related info for your journey

What airport do you fly from for flights from Sacramento to Illinois?
Most people fly from Sacramento Intl (SMF) if they book a flight from Sacramento to Illinois. Sacramento Intl is conveniently located just 9.4 mi from Sacramento’s city center.
How long is the flight from Sacramento to Illinois?
Departing from Sacramento to Illinois will take you 6h 37m. Airlines will cover a distance of 1776 mi. This flight may include one or multiple stops.
What are the cheapest airlines to fly from Sacramento to Illinois one-way?
To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $58. American Airlines flights start at $82 while deals on Frontier start at $91 one-way.
What are the most popular routes from Sacramento to Illinois?
The most popular flight routes from Sacramento to Illinois are Sacramento Intl - Chicago O'Hare Intl, Sacramento Intl - Chicago Midway and Sacramento Intl - Lambert-St Louis.
What are the most reliable airlines from Sacramento to Illinois?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Sacramento to Illinois on time: Lufthansa (83%), Air Canada (82%), United Airlines (77%).
What are the cheapest flights from Sacramento to Illinois?
Looking for the cheapest flight from Sacramento to Illinois? While on average our users pay $1,070, our data indicates the cheapest price to be $153. The most popular route (Sacramento Intl - Chicago O'Hare Intl), is priced around $222.
Can I find deals for flights from Sacramento to Illinois that include hotel bookings?
Yes. In addition to deals on Sacramento to Illinois flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Sacramento to Illinois?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Sacramento to Illinois.
Can I find deals for business class flights from Sacramento to Illinois?
Yes. Cheapflights offers flight deals from Sacramento to Illinois by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Sacramento to Illinois?
Currently, April is the cheapest month in which you can book a flight from Sacramento to Illinois (average of $126). Flying from Sacramento to Illinois in December is currently the most expensive (average of $233). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Top 7 airlines flying from Sacramento to Illinois

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$154	Average$255	FlexibilityNo cancel fee	On-time62%
Spirit Airlines	Cheapest$159	Average$230	FlexibilityNo cancel fee	On-time65%
Alaska Airlines	Cheapest$235	Average$360	FlexibilityNo cancel fee	On-time75%
American Airlines	Cheapest$253	Average$492	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$260	Average$406	FlexibilityNo cancel fee	On-timeN/A
United Airlines	Cheapest$287	Average$527	FlexibilityNo cancel fee	On-time69%
Southwest	Cheapest$335	Average$481	FlexibilityNo cancel fee	On-time63%

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$85+ Cheap flights from Sacramento (SMF) to Illinois

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/16. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Sacramento to Illinois with Cheapflights

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Cheap flight deals from Sacramento to Illinois

Cheapest flights from Sacramento to IllinoisExplore the most affordable flight options available from Sacramento to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

Explore the most affordable flight options available from Sacramento to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

Find flight deals from Sacramento to Illinois

Keep the following information in mind while searching for Sacramento to Illinois flight deals. Data was last updated December 15, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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Best time to book a flight from Sacramento to Illinois

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What is the cheapest month to book a flight from Sacramento to Illinois?

What is the cheapest time of day to fly from SMF to IL?

Find hourly flight availability from Sacramento to Illinois. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

What is the cheapest day to fly from Sacramento to Illinois?

Use this chart to determine the cheapest time to fly round-trip from Sacramento to Illinois. Price data was last updated on December 16, 2024.

Reviews of airlines servicing Illinois

See what other customers who have flown with Southwest, Delta, and United Airlines from Sacramento to Illinois have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from Sacramento to Illinois. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airport do you fly from for flights from Sacramento to Illinois?

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What are the cheapest flights from Sacramento to Illinois?

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What is the cheapest month to book a flight from Sacramento to Illinois?

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Alternative routes for Sacramento to Illinois

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Top 7 airlines flying from Sacramento to Illinois

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Cheapest flights from Sacramento to Illinois
Explore the most affordable flight options available from Sacramento to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.