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$115+ 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 5/6. Fares are subject to change and may not be available on all flights or dates of travel.
SMF — ORD
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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Cheap flight deals from Sacramento to Illinois

Keep the following information in mind while searching for Sacramento to Illinois flight deals. Data was last updated February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$160
(CheapOair)

One-way from

$115
(American Airlines)

Popular in

December

Cheapest in

May

Average price

$471
Provider with most accurate pricing for Sacramento Intl-Chicago (CHI) flight deals.
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Provider most trusted by Cheapflights users for Sacramento Intl-Chicago (CHI) flights.
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From Sacramento Intl to Illinois
Search Deals
One-way flight from Sacramento Intl to Illinois
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($38 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
Search Deals

Find 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 February 22, 2025.

This CheapOair deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/131:27 pmSMF - STL
1 stop17h 49mFrontier
Mon 3/176:55 pmSTL - SMF
1 stop26h 04mFrontier
Deal found 2/21$160
This FlightHub deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/75:30 amSMF - ORD
1 stop6h 46mSpirit Airlines
Sat 5/1711:00 amORD - SMF
1 stop9h 43mSpirit Airlines
Deal found 2/21$213
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/226:20 amSMF - ORD
2 stops11h 53mDelta
Sat 3/2911:13 amORD - SMF
2 stops12h 35mDelta
Deal found 2/20$224
This Frontier deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/277:46 pmSMF - ORD
1 stop7h 14mFrontier
Thu 4/36:45 amORD - SMF
1 stop7h 47mFrontier
Deal found 2/20$230
This Frontier deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/181:22 pmSMF - MDW
1 stop8h 55mFrontier
Sun 3/236:40 amMDW - SMF
1 stop7h 52mFrontier
Deal found 2/21$246
This American Airlines deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/412:11 pmSMF - STL
1 stop9h 05mAmerican Airlines
Sat 4/57:33 amSTL - SMF
1 stop6h 35mAmerican Airlines
Deal found 2/20$247
This United Airlines deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/267:00 amSMF - STL
1 stop6h 47mUnited Airlines
Tue 4/293:40 pmSTL - SMF
2 stops10h 11mUnited Airlines
Deal found 2/22$252
This Trip.com deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/57:30 pmSMF - MDW
2 stops18h 04mMultiple Airlines
Sun 3/96:40 amMDW - SMF
1 stop7h 52mMultiple Airlines
Deal found 2/21$252
This Delta deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/35:12 pmSMF - STL
1 stop5h 16mDelta
Sun 4/67:40 amSTL - SMF
1 stop6h 50mDelta
Deal found 2/20$257
This FlightHub deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/2111:49 amSMF - ORD
1 stop16h 53mMultiple Airlines
Sun 3/306:50 amORD - SMF
1 stop7h 42mMultiple Airlines
Deal found 2/20$267
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/57:30 pmSMF - RFD
1 stop23h 17mMultiple Airlines
Sun 3/99:37 pmRFD - SMF
1 stop13h 05mMultiple Airlines
Deal found 2/21$291
This Delta deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/96:38 pmSMF - MDW
2 stops12h 05mDelta
Wed 4/161:16 pmMDW - SMF
1 stop9h 34mDelta
Deal found 2/22$298

Find flights from Sacramento to Illinois within your budget

Customize your flight search to find flights from Sacramento to Illinois that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.

Fly from

Sacramento

Fly to

Illinois

Route

Depart

Return

Price

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Thu 3/13

1:27 pm-9:16 am

1 stop17h 49m

Lambert-St Louis

Mon 3/17

6:55 pm-6:59 pm

1 stop26h 04m

$160

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Wed 5/7

5:30 am-2:16 pm

1 stop6h 46m

Chicago O'Hare Intl

Sat 5/17

11:00 am-6:43 pm

1 stop9h 43m

$213

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Sat 3/22

6:20 am-8:13 pm

2 stops11h 53m

Chicago O'Hare Intl

Sat 3/29

11:13 am-9:48 pm

2 stops12h 35m

$224

SacramentoChicago

SMF - ORD

SMFORD

Sacramento Intl

Thu 4/10

1:32 pm-12:10 am

1 stop8h 38m

Chicago O'Hare Intl

Sun 4/13

8:00 am-8:33 am

1 stop26h 33m

$230

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Tue 3/18

1:22 pm-12:17 am

1 stop8h 55m

Chicago Midway

Sun 3/23

6:40 am-12:32 pm

1 stop7h 52m

$246

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Fri 4/4

12:11 pm-11:16 pm

1 stop9h 05m

Lambert-St Louis

Sat 4/5

7:33 am-12:08 pm

1 stop6h 35m

$247

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Sat 4/26

7:00 am-3:47 pm

1 stop6h 47m

Lambert-St Louis

Tue 4/29

3:40 pm-11:51 pm

2 stops10h 11m

$252

SacramentoChicago

SMF - MDW

SMFMDW

Sacramento Intl

Wed 3/5

7:30 pm-3:34 pm

2 stops18h 04m

Chicago Midway

Sun 3/9

6:40 am-12:32 pm

1 stop7h 52m

$252

SacramentoSt. Louis

SMF - STL

SMFSTL

Sacramento Intl

Thu 4/3

5:12 pm-12:28 am

1 stop5h 16m

Lambert-St Louis

Sun 4/6

7:40 am-12:30 pm

1 stop6h 50m

$257

SacramentoChicago

SMF - RFD

SMFRFD

Sacramento Intl

Wed 3/5

7:30 pm-8:47 pm

1 stop23h 17m

Chicago Greater Rockford

Sun 3/9

9:37 pm-8:42 am

1 stop13h 05m

$291

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 52 results
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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.

Travel insights for flights from Sacramento to Illinois

Get recent, data-driven insights about flights from Sacramento to Illinois including ideal travel times, pricing trends, and more.

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

Currently, August is the cheapest month in which you can book a flight from Sacramento to Illinois (average of $245). Flying from Sacramento to Illinois in March is currently the most expensive (average of $321). 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?

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 February 22, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Sacramento to Illinois as you normally would.

Weekly flight availability from Sacramento to Illinois

Explore weekly flight availability from Sacramento to Illinois. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated February 22, 2025.

The most flights from SMF to USIL are scheduled on a Tuesday (7 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (3 on average).

Rainfall in Illinois by month

Plan your trip to Illinois by taking into account the average rainfall totals by month.

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.

Temperature in Illinois by month

Plan your trip to Illinois by taking into account the average temperature totals by month.

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).

Reviews of airlines servicing Illinois

Get insights into the airlines that provide service to Illinois. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Illinois. Reviews last updated February 22, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from Sacramento to Illinois by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.7

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,396 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.7

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,702 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.7

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,203 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.7

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,314 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.7

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,754 reviews
Southwest
8.1
Very good
4,396 reviews

Overall

8.1

Comfort

8.1

Entertainment

7.6

Boarding

8.2

Crew

8.7

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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?

    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.

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

    To fly one-way, consider booking your trip with American Airlines, which is currently one of the cheapest options available, starting at $115. Delta flights start at $129 while deals on Spirit Airlines start at $132 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 (90%), Air Canada (88%), United Airlines (85%).

  • What are the cheapest flights from Sacramento to Illinois?

    Looking for the cheapest flight from Sacramento to Illinois? While on average our users pay $948, our data indicates the cheapest price to be $171. The most popular route (Sacramento Intl - Chicago O'Hare Intl), is priced around $122.

  • 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, August is the cheapest month in which you can book a flight from Sacramento to Illinois (average of $245). Flying from Sacramento to Illinois in March is currently the most expensive (average of $321). 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.

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Alternative routes for Sacramento to Illinois

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Top 6 airlines flying from Sacramento to Illinois

Discover the top 6 airlines that operate flights from Sacramento to Illinois. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$243FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$159Average$285FlexibilityNo cancel feeOn-time65%
DeltaCheapest$182Average$560FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$250Average$543FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$258Average$550FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$384Average$468FlexibilityNo cancel feeOn-time63%
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