$80+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
SMF — ORD
May 31 — Jun 71
Round-trip
1 adult, Economy
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Find cheap flights from Sacramento to Illinois with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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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 May 1, 2026.
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 May 1, 2026.
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Tue 5/265:22 pm
SMF
- STL
1 stop22h 44m
Frontier
Tue 6/26:51 pm
STL
- SMF
1 stop15h 51m
Frontier
Deal found 4/28![Frontier logo]()
$196
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Tue 5/125:14 pm
SMF
- STL
1 stop22h 52m
Frontier
Fri 5/159:18 pm
STL
- SMF
1 stop21h 01m
Frontier
Deal found 4/28![Frontier logo]()
$211
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Tue 5/125:14 pm
SMF
- STL
1 stop22h 52m
Frontier
Wed 5/206:51 pm
STL
- SMF
1 stop23h 36m
Frontier
Deal found 4/28![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 4/30. 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 6/49:44 am
SMF
- STL
1 stop8h 27m
Frontier
Mon 6/89:06 pm
STL
- SMF
1 stop21h 09m
Frontier
Deal found 4/30![Frontier logo]()
$221
This deal was found by Cheapflights users on 4/30. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:25 am
SMF
- STL
1 stop5h 58m
Frontier
Sat 7/252:52 pm
STL
- SMF
1 stop5h 57m
Frontier
Deal found 4/30![Frontier logo]()
$224
This Frontier deal was found by Cheapflights users on 4/30. 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.
Wed 7/2911:25 am
SMF
- STL
1 stop5h 58m
Frontier
Sun 8/22:52 pm
STL
- SMF
1 stop5h 57m
Frontier
Deal found 4/30![Frontier logo]()
$230
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Sat 7/2511:25 am
SMF
- STL
1 stop5h 58m
Frontier
Wed 7/297:03 pm
STL
- SMF
1 stop25h 46m
Frontier
Deal found 4/29![Frontier logo]()
$235
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Wed 6/105:10 pm
SMF
- STL
1 stop18h 56m
Frontier
Wed 6/177:46 pm
STL
- SMF
1 stop25h 04m
Frontier
Deal found 4/29![Frontier logo]()
$241
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Wed 5/135:14 pm
SMF
- STL
1 stop16h 27m
Frontier
Wed 5/206:51 pm
STL
- SMF
1 stop23h 36m
Frontier
Deal found 4/28![Frontier logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:16 pm
SMF
- ORD
1 stop8h 18m
Frontier
Sun 5/319:37 pm
ORD
- SMF
1 stop15h 06m
Frontier
Deal found 4/27![Frontier logo]()
$318
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/227:23 am
SMF
- ORD
1 stop9h 34m
Alaska Airlines
Wed 7/296:20 am
ORD
- SMF
1 stop8h 33m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:20 pm
SMF
- ORD
1 stop8h 00m
Alaska Airlines
Wed 6/39:00 am
ORD
- SMF
1 stop7h 47m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$322
Best flights from Sacramento to IllinoisDiscover 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 May 1, 2026.
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 May 1, 2026.
This Southwest deal was found by Cheapflights users on 4/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/92:50 pm
SMF
- STL
1 stop6h 15m
Southwest
Fri 8/145:15 am
STL
- SMF
2 stops8h 05m
Southwest
Deal found 4/30![Southwest logo]()
$322
This United Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 5/126:00 am
SMF
- STL
2 stops8h 39m
United Airlines
Fri 5/155:59 pm
STL
- SMF
1 stop6h 16m
United Airlines
Deal found 4/28![United Airlines logo]()
$322
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/53:25 pm
SMF
- ORD
1 stop6h 30m
Alaska Airlines
Mon 6/87:59 pm
ORD
- SMF
1 stop15h 48m
Alaska Airlines
Deal found 4/28![Alaska Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 4/29. 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 5/286:15 am
SMF
- MLI
2 stops14h 06m
Delta
Wed 6/311:00 am
MLI
- SMF
2 stops10h 57m
Delta
Deal found 4/29![Delta logo]()
$360
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/155:07 pm
SMF
- RFD
1 stop17h 17m
Multiple Airlines
Sun 7/261:14 pm
RFD
- SMF
1 stop7h 35m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$425
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Sat 5/162:27 pm
SMF
- PIA
1 stop6h 46m
American Airlines
Wed 5/206:54 pm
PIA
- SMF
1 stop6h 33m
American Airlines
Deal found 4/27![American Airlines logo]()
$475
This Alaska Airlines deal was found by Cheapflights users on 4/26. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/205:00 pm
SMF
- ORD
1 stop18h 22m
Alaska Airlines
Mon 8/318:42 pm
ORD
- SMF
1 stop14h 43m
Alaska Airlines
Deal found 4/26![Alaska Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 4/29. 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 7/2511:39 pm
SMF
- ORD
Nonstop4h 09m
United Airlines
Wed 7/297:53 pm
ORD
- SMF
Nonstop4h 44m
United Airlines
Deal found 4/29![United Airlines logo]()
$361
This Southwest deal was found by Cheapflights users on 4/26. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/2211:50 pm
SMF
- MDW
Nonstop3h 55m
Southwest
Sat 7/255:10 pm
MDW
- SMF
2 stops7h 35m
Southwest
Deal found 4/26![Southwest logo]()
$376
This Delta deal was found by Cheapflights users on 4/30. 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 5/307:00 am
SMF
- MDW
1 stop7h 12m
Delta
Sat 6/61:59 pm
MDW
- SMF
1 stop8h 51m
Delta
Deal found 4/30![Delta logo]()
$381
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 7/84:19 pm
SMF
- ORD
1 stop6h 25m
United Airlines
Sat 7/114:05 pm
ORD
- SMF
Nonstop4h 38m
United Airlines
Deal found 4/30![United Airlines logo]()
$371
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/211:55 pm
SMF
- MDW
Nonstop3h 50m
Southwest
Tue 6/99:50 pm
MDW
- SMF
Nonstop4h 25m
Southwest
Deal found 4/29![Southwest logo]()
$381
This Delta deal was found by Cheapflights users on 4/29. 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.
Fri 9/45:00 pm
SMF
- STL
1 stop5h 36m
Delta
Tue 9/83:42 pm
STL
- SMF
1 stop8h 58m
Delta
Deal found 4/29![Delta logo]()
$382
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/225:07 pm
SMF
- RFD
1 stop17h 17m
Multiple Airlines
Sun 7/261:14 pm
RFD
- SMF
1 stop7h 35m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$426
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:56 pm
SMF
- ORD
1 stop9h 24m
Alaska Airlines
Tue 5/199:00 am
ORD
- SMF
1 stop15h 58m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 6/211:39 pm
SMF
- ORD
Nonstop4h 09m
United Airlines
Tue 6/95:00 am
ORD
- SMF
1 stop6h 35m
United Airlines
Deal found 4/29![United Airlines logo]()
$371
This Southwest deal was found by Cheapflights users on 4/28. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/44:10 pm
SMF
- STL
1 stop5h 45m
Southwest
Sat 6/63:00 pm
STL
- SMF
2 stops7h 35m
Southwest
Deal found 4/28![Southwest logo]()
$393
This Delta deal was found by Cheapflights users on 5/1. 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.
Tue 9/157:18 pm
SMF
- MLI
2 stops13h 08m
Delta
Mon 9/215:00 pm
MLI
- SMF
1 stop7h 40m
Delta
Deal found 5/1![Delta logo]()
$400
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/135:14 pm
SMF
- RFD
1 stop16h 46m
Multiple Airlines
Wed 5/208:55 pm
RFD
- SMF
2 stops21h 32m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$458
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 5/126:00 am
SMF
- EVV
1 stop7h 33m
American Airlines
Sun 5/316:50 am
EVV
- SMF
1 stop9h 27m
American Airlines
Deal found 4/28![American Airlines logo]()
$510
This Southwest deal was found by Cheapflights users on 4/27. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/136:50 pm
SMF
- MDW
1 stop7h 50m
Southwest
Mon 6/159:55 pm
MDW
- SMF
Nonstop4h 25m
Southwest
Deal found 4/27![Southwest logo]()
$399
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Wed 9/22:12 pm
SMF
- ORD
Nonstop4h 13m
United Airlines
Thu 9/105:57 pm
ORD
- SMF
1 stop6h 58m
United Airlines
Deal found 4/29![United Airlines logo]()
$399
This Delta deal was found by Cheapflights users on 4/26. 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.
Tue 10/2010:40 pm
SMF
- EVV
1 stop8h 45m
Delta
Tue 10/2710:05 am
EVV
- SMF
1 stop10h 33m
Delta
Deal found 4/26![Delta logo]()
$419
This Kiwi.com deal was found by Cheapflights users on 4/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/55:07 pm
SMF
- RFD
1 stop17h 27m
Multiple Airlines
Sun 8/91:24 pm
RFD
- SMF
1 stop7h 25m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$462
This Alaska Airlines deal was found by Cheapflights users on 4/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1510:26 am
SMF
- MLI
2 stops10h 37m
Alaska Airlines
Mon 9/2111:29 am
MLI
- SMF
2 stops9h 55m
Alaska Airlines
Deal found 4/30![Alaska Airlines logo]()
$479
This American Airlines deal was found by Cheapflights users on 4/28. 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 5/152:27 pm
SMF
- PIA
1 stop6h 46m
American Airlines
Sun 5/176:54 pm
PIA
- SMF
1 stop6h 33m
American Airlines
Deal found 4/28![American Airlines logo]()
$528
This Southwest deal was found by Cheapflights users on 4/29. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/215:25 am
SMF
- MDW
Nonstop3h 55m
Southwest
Tue 8/2510:10 am
MDW
- SMF
2 stops7h 30m
Southwest
Deal found 4/29![Southwest logo]()
$400
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Fri 5/221:15 pm
SMF
- STL
1 stop7h 30m
United Airlines
Sun 5/245:10 am
STL
- SMF
1 stop6h 25m
United Airlines
Deal found 4/30![United Airlines logo]()
$417
This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 5/247:00 am
SMF
- MLI
1 stop7h 37m
Delta
Sat 5/3011:00 am
MLI
- SMF
2 stops11h 50m
Delta
Deal found 4/30![Delta logo]()
$430
This American Airlines deal was found by Cheapflights users on 4/27. 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.
Tue 5/1210:04 am
SMF
- EVV
2 stops11h 06m
American Airlines
Sat 5/1612:08 pm
EVV
- SMF
2 stops12h 15m
American Airlines
Deal found 4/27![American Airlines logo]()
$531
Last-minute flights from Sacramento to IllinoisDiscover last-minute flight deals from Sacramento to Illinois. Data last updated May 1, 2026 and is based on user searches.
Discover last-minute flight deals from Sacramento to Illinois. Data last updated May 1, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 4/26. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/16:30 pm
SMF
- ORD
1 stop9h 38m
Frontier
Tue 5/59:37 pm
ORD
- SMF
1 stop15h 06m
Frontier
Deal found 4/26![Frontier logo]()
$326
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Tue 5/125:14 pm
SMF
- STL
1 stop22h 52m
Frontier
Fri 5/159:18 pm
STL
- SMF
1 stop21h 01m
Frontier
Deal found 4/28![Frontier logo]()
$211
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Tue 5/125:14 pm
SMF
- STL
1 stop22h 52m
Frontier
Wed 5/206:51 pm
STL
- SMF
1 stop23h 36m
Frontier
Deal found 4/28![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Wed 5/135:14 pm
SMF
- STL
1 stop16h 27m
Frontier
Wed 5/206:51 pm
STL
- SMF
1 stop23h 36m
Frontier
Deal found 4/28![Frontier logo]()
$242
This Super.com deal was found by Cheapflights users on 4/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/1511:28 am
SMF
- ORD
1 stop7h 04m
Frontier
Tue 5/199:37 pm
ORD
- SMF
1 stop15h 06m
Frontier
Deal found 4/26![Frontier logo]()
$323
This CheapOair deal was found by Cheapflights users on 4/28. 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.
Tue 5/265:22 pm
SMF
- STL
1 stop22h 44m
Frontier
Tue 6/26:51 pm
STL
- SMF
1 stop15h 51m
Frontier
Deal found 4/28![Frontier logo]()
$196
This Alaska Airlines deal was found by Cheapflights users on 4/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:20 pm
SMF
- ORD
1 stop8h 00m
Alaska Airlines
Wed 5/279:00 am
ORD
- SMF
1 stop7h 47m
Alaska Airlines
Deal found 4/29![Alaska Airlines logo]()
$321
This Alaska Airlines deal was found by Cheapflights users on 4/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:20 pm
SMF
- ORD
1 stop8h 00m
Alaska Airlines
Wed 6/39:00 am
ORD
- SMF
1 stop7h 47m
Alaska Airlines
Deal found 4/27![Alaska Airlines logo]()
$322
This CheapOair deal was found by Cheapflights users on 4/30. 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.
Wed 5/275:22 pm
SMF
- STL
1 stop25h 04m
Frontier
Mon 6/19:21 pm
STL
- SMF
1 stop13h 21m
Frontier
Deal found 4/30![Frontier logo]()
$221
This CheapOair deal was found by Cheapflights users on 4/28. 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 5/285:22 pm
SMF
- STL
1 stop24h 49m
Frontier
Thu 6/49:06 pm
STL
- SMF
1 stop13h 36m
Frontier
Deal found 4/28![Frontier logo]()
$261
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:16 pm
SMF
- ORD
1 stop8h 18m
Frontier
Sun 5/319:37 pm
ORD
- SMF
1 stop15h 06m
Frontier
Deal found 4/27![Frontier logo]()
$318
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/288:16 pm
SMF
- ORD
1 stop8h 18m
Frontier
Tue 6/29:37 pm
ORD
- SMF
2 stops23h 54m
Frontier
Deal found 4/29![Frontier logo]()
$324
One-way flights from Sacramento to IllinoisSearch for one-way flight options from Sacramento to Illinois. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
Search for one-way flight options from Sacramento to Illinois. Find affordable one-way fares based on user searches. Data last updated May 1, 2026.
This Frontier deal was found by Cheapflights users on 4/27. 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.
Sat 5/2311:28 am
SMF
- STL
1 stop5h 55m
Frontier
Deal found 4/27![Frontier logo]()
$80
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/268:16 pm
SMF
- ORD
1 stop8h 18m
Frontier
Deal found 4/27![Frontier logo]()
$104
This Frontier deal was found by Cheapflights users on 4/27. 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.
Sat 5/238:16 pm
SMF
- ORD
1 stop8h 18m
Frontier
Deal found 4/27![Frontier logo]()
$105
This CheapOair deal was found by Cheapflights users on 4/29. 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.
Tue 5/265:22 pm
SMF
- STL
1 stop22h 44m
Frontier
Deal found 4/29![Frontier logo]()
$117
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 7/2511:25 am
SMF
- STL
1 stop5h 58m
Frontier
Deal found 4/29![Frontier logo]()
$119
This Frontier deal was found by Cheapflights users on 4/28. 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.
Sat 7/186:28 pm
SMF
- ORD
1 stop9h 00m
Frontier
Deal found 4/28![Frontier logo]()
$119
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/98:16 pm
SMF
- ORD
1 stop8h 23m
Frontier
Deal found 4/27![Frontier logo]()
$124
This Priceline deal was found by Cheapflights users on 4/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2611:25 am
SMF
- STL
1 stop5h 28m
Frontier
Deal found 4/30![Frontier logo]()
$125
This Super.com deal was found by Cheapflights users on 4/27. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/128:16 pm
SMF
- ORD
1 stop8h 23m
Frontier
Deal found 4/27![Frontier logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/29:44 am
SMF
- STL
2 stops31h 39m
Frontier
Deal found 4/30![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 4/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/105:10 pm
SMF
- ORD
1 stop10h 22m
Frontier
Deal found 4/26![Frontier logo]()
$130
This Frontier deal was found by Cheapflights users on 4/28. 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 7/145:07 pm
SMF
- ORD
1 stop10h 21m
Frontier
Deal found 4/28![Frontier logo]()
$131
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 May 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $196 (CheapOair) |
One-way from | $80 (Frontier) |
Popular in | March |
Cheapest in | September |
Average price | $374 |
Cheapflights Fare Finder
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 May 1, 2026.
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
Cheapest round-trip
SacramentoSt. Louis
SMF - STL
SMFSTL
Sacramento Intl
Sun 8/9
2:50 pm-11:05 pm
1 stop6h 15m
Lambert-St Louis
Fri 8/14
5:15 am-11:20 am
2 stops8h 05m
$322
SacramentoSt. Louis
SMF - STL
SMFSTL
Sacramento Intl
Tue 5/12
6:00 am-4:39 pm
2 stops8h 39m
Lambert-St Louis
Fri 5/15
5:59 pm-10:15 pm
1 stop6h 16m
$322
SacramentoChicago
SMF - ORD
SMFORD
Sacramento Intl
Fri 6/5
3:25 pm-11:55 pm
1 stop6h 30m
Chicago O'Hare Intl
Mon 6/8
7:59 pm-9:47 am
1 stop15h 48m
$355
SacramentoChicago
SMF - ORD
SMFORD
Sacramento Intl
Thu 8/20
5:00 pm-1:22 pm
1 stop18h 22m
Chicago O'Hare Intl
Mon 8/31
8:42 pm-9:25 am
1 stop14h 43m
$355
SacramentoMoline
SMF - MLI
SMFMLI
Sacramento Intl
Thu 5/28
6:15 am-10:21 pm
2 stops14h 06m
Moline Quad-City
Wed 6/3
11:00 am-7:57 pm
2 stops10h 57m
$360
SacramentoChicago
SMF - ORD
SMFORD
Sacramento Intl
Sat 7/25
11:39 pm-5:48 am
Nonstop4h 09m
Chicago O'Hare Intl
Wed 7/29
7:53 pm-10:37 pm
Nonstop4h 44m
$361
SacramentoChicago
SMF - ORD
SMFORD
Sacramento Intl
Wed 7/8
4:19 pm-12:44 am
1 stop6h 25m
Chicago O'Hare Intl
Sat 7/11
4:05 pm-6:43 pm
Nonstop4h 38m
$371
SacramentoChicago
SMF - ORD
SMFORD
Sacramento Intl
Tue 6/2
11:39 pm-5:48 am
Nonstop4h 09m
Chicago O'Hare Intl
Tue 6/9
5:00 am-9:35 am
1 stop6h 35m
$371
SacramentoChicago
SMF - MDW
SMFMDW
Sacramento Intl
Wed 7/22
11:50 pm-5:45 am
Nonstop3h 55m
Chicago Midway
Sat 7/25
5:10 pm-10:45 pm
2 stops7h 35m
$376
SacramentoChicago
SMF - MDW
SMFMDW
Sacramento Intl
Sat 5/30
7:00 am-4:12 pm
1 stop7h 12m
Chicago Midway
Sat 6/6
1:59 pm-8:50 pm
1 stop8h 51m
$381
Showing 1-10 of 60 resultsSorted by cheapest first
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.
SMF-STL
SMF-ORD
SMF-RFD
SMF-BMI
SMF-MDW
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
SMF-USIL
SMF-STL
SMF-ORD
SMF-RFD
SMF-BMI
How far ahead should I book a flight from Sacramento to Illinois?
To ensure you get the cheapest price possible for a flight from Sacramento to Illinois, you should look to book at least 78 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Sacramento to Illinois?
Currently, September is the cheapest month in which you can book a flight from Sacramento to Illinois (average of $84). Flying from Sacramento to Illinois in November is currently the most expensive (average of $205). 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 May 1, 2026.
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 3% on your trip compared to booking a flight in the morning.
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 April 25, 2026.
Travelers seeking maximum savings on their Sacramento to Illinois flight should consider departing on Wednesday at noon 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.
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 May 1, 2026.
The most flights from SMF to USIL are scheduled on a Thursday (14 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).
How much does it cost to fly round-trip from Sacramento to Illinois?
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 May 1, 2026.
See what other customers who have flown with Southwest,Delta, andUnited 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.
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Comfort
8.0
Crew
8.6
Reviews
1 / 20
10.0
ExcellentWilliam Drew,Nov 2025
SJC - HNL
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.
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Alternative routes for Sacramento to Illinois
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Complete your trip
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Find flights from Sacramento to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Sacramento and Illinois flights
Browse other Sacramento and Illinois flight options. Last updated on May 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Sacramento to Illinois flights
Consider these flights traveling from Sacramento to Illinois.
Top 7 airlines flying from Sacramento to Illinois
Discover the top 7 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 May 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$131 | Average$227 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$158 | Average$258 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$190 | Average$292 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$190 | Average$466 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$194 | Average$297 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$278 | Average$486 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$335 | Average$512 | FlexibilityNo cancel fee | On-time63% |