$112+ Cheap flights from San Francisco (SFO) to Illinois
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/27. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — ORD
Nov 30 — Dec 71
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco 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 San Francisco to IllinoisExplore the most affordable flight options available from San Francisco to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2026.
Explore the most affordable flight options available from San Francisco to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 11/199:09 am -
2 stops9h 21m
Mon 11/301:38 pm -
1 stop29h 57m
Deal found 10/27![Multiple Airlines logo]()
$263
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/84:33 pm -
2 stops41h 09m
Sun 12/1312:32 pm -
1 stop26h 50m
Deal found 10/30![Multiple Airlines logo]()
$280
This WAYA deal was found by Cheapflights users on 10/29. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:11 pm -
1 stop20h 55m
Mon 11/301:38 pm -
1 stop22h 02m
Deal found 10/29![Multiple Airlines logo]()
$290
This Kiwi.com deal was found by Cheapflights users on 10/30. 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.
Wed 12/910:29 am -
2 stops23h 13m
Sun 12/1312:32 pm -
1 stop26h 50m
Deal found 10/30![Multiple Airlines logo]()
$291
This Kiwi.com deal was found by Cheapflights users on 10/25. 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.
Mon 11/2311:41 am -
1 stop16h 33m
Tue 12/17:00 am -
1 stop11h 03m
Deal found 10/25![Frontier logo]()
$295
This Mytrip deal was found by Cheapflights users on 10/25. 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.
Tue 11/1712:20 pm -
1 stop10h 01m
Sat 11/216:40 am -
2 stops15h 45m
Deal found 10/25![Frontier logo]()
$296
This United Airlines deal was found by Cheapflights users on 10/25. 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.
Mon 11/234:10 pm -
Nonstop4h 19m
Thu 12/38:45 am -
Nonstop4h 51m
Deal found 10/25![United Airlines logo]()
$297
This Mytrip deal was found by Cheapflights users on 10/25. 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 12/29:35 pm -
2 stops20h 09m
Sun 12/66:21 am -
2 stops16h 40m
Deal found 10/25![Frontier logo]()
$298
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1511:47 pm -
1 stop9h 38m
Wed 11/1812:27 pm -
1 stop12h 02m
Deal found 10/28![Frontier logo]()
$299
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:02 am -
2 stops15h 11m
Mon 11/2312:05 pm -
2 stops10h 20m
Deal found 10/28![Frontier logo]()
$299
This Southwest deal was found by Cheapflights users on 10/27. 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.
Thu 11/1911:35 am -
1 stop9h 10m
Thu 11/2610:30 am -
Nonstop4h 45m
Deal found 10/27![Southwest logo]()
$300
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 11/199:13 am -
1 stop6h 46m
Mon 11/234:59 pm -
Nonstop5h 01m
Deal found 10/28![American Airlines logo]()
$300
Best flights from San Francisco to IllinoisDiscover carefully curated flight deals from San Francisco to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 31, 2026.
Discover carefully curated flight deals from San Francisco to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 31, 2026.
This Southwest deal was found by Cheapflights users on 10/30. 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.
Fri 1/155:20 am -
1 stop8h 00m
Mon 1/189:40 pm -
Nonstop4h 50m
Deal found 10/30![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/163:04 pm -
Nonstop4h 25m
Sat 12/196:00 am -
Nonstop5h 01m
Deal found 10/26![United Airlines logo]()
$315
This Alaska Airlines deal was found by Cheapflights users on 10/26. 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.
Sat 12/58:40 am -
2 stops13h 19m
Mon 12/147:58 pm -
1 stop14h 58m
Deal found 10/26![Alaska Airlines logo]()
$338
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/251:50 pm -
1 stop8h 21m
Sun 1/3112:18 pm -
1 stop8h 28m
Deal found 10/29![American Airlines logo]()
$379
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/1510:29 am -
2 stops30h 55m
Sun 12/209:13 pm -
1 stop11h 44m
Deal found 10/30![Multiple Airlines logo]()
$382
This Delta deal was found by Cheapflights users on 10/30. 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.
Thu 1/1411:57 am -
1 stop9h 30m
Mon 1/186:00 am -
1 stop8h 05m
Deal found 10/30![Delta logo]()
$387
This Southwest deal was found by Cheapflights users on 10/26. 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.
Fri 1/299:25 am -
1 stop8h 00m
Mon 2/110:05 am -
Nonstop4h 50m
Deal found 10/26![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 10/30. 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.
Mon 12/76:00 am -
Nonstop4h 15m
Mon 12/145:20 am -
1 stop6h 45m
Deal found 10/30![Southwest logo]()
$307
This Alaska Airlines deal was found by Cheapflights users on 10/25. 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 1/147:21 am -
2 stops12h 47m
Mon 1/182:13 pm -
1 stop20h 39m
Deal found 10/25![Alaska Airlines logo]()
$349
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/196:53 pm -
Nonstop4h 23m
Sat 1/1612:40 pm -
Nonstop4h 55m
Deal found 10/26![United Airlines logo]()
$353
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 11/196:42 pm -
Nonstop4h 17m
Tue 11/244:35 pm -
Nonstop4h 53m
Deal found 10/28![United Airlines logo]()
$355
This Delta deal was found by Cheapflights users on 10/29. 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.
Wed 12/910:59 pm -
1 stop10h 25m
Sat 12/1212:06 pm -
1 stop8h 50m
Deal found 10/29![Delta logo]()
$399
This American Airlines deal was found by Cheapflights users on 10/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/126:11 am -
1 stop6h 44m
Wed 12/162:32 pm -
1 stop8h 30m
Deal found 10/30![American Airlines logo]()
$408
This United Airlines deal was found by Cheapflights users on 10/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/2211:30 pm -
Nonstop4h 26m
Fri 12/256:00 am -
Nonstop5h 01m
Deal found 10/26![United Airlines logo]()
$360
This Southwest deal was found by Cheapflights users on 10/29. 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.
Mon 11/3011:35 pm -
Nonstop4h 25m
Thu 12/31:20 pm -
2 stops10h 55m
Deal found 10/29![Southwest logo]()
$365
This Delta deal was found by Cheapflights users on 10/29. 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 3/510:45 pm -
1 stop8h 00m
Mon 3/85:25 pm -
1 stop8h 50m
Deal found 10/29![Delta logo]()
$414
This Alaska Airlines deal was found by Cheapflights users on 10/28. 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 11/207:15 am -
1 stop10h 48m
Fri 11/277:26 am -
1 stop16h 39m
Deal found 10/28![Alaska Airlines logo]()
$437
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/2310:45 pm -
Nonstop4h 17m
Wed 12/28:45 am -
Nonstop4h 51m
Deal found 10/27![United Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 10/26. 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.
Thu 11/1911:35 am -
1 stop9h 10m
Sun 11/229:30 pm -
Nonstop4h 55m
Deal found 10/26![Southwest logo]()
$371
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 11/123:04 pm -
1 stop7h 03m
Mon 11/165:03 pm -
1 stop8h 52m
Deal found 10/28![American Airlines logo]()
$449
This Delta deal was found by Cheapflights users on 10/29. 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.
Mon 11/237:05 am -
2 stops14h 03m
Wed 12/25:19 pm -
1 stop8h 36m
Deal found 10/29![Delta logo]()
$426
This United Airlines deal was found by Cheapflights users on 10/25. 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 12/196:53 pm -
Nonstop4h 23m
Fri 1/16:00 am -
Nonstop5h 01m
Deal found 10/25![United Airlines logo]()
$376
This American Airlines deal was found by Cheapflights users on 10/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/97:40 am -
1 stop8h 50m
Sat 12/125:59 am -
1 stop7h 38m
Deal found 10/29![American Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 10/25. 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 11/1810:38 am -
2 stops8h 55m
Wed 11/257:17 pm -
1 stop6h 42m
Deal found 10/25![Delta logo]()
$441
This Southwest deal was found by Cheapflights users on 10/28. 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 11/266:05 am -
2 stops10h 45m
Tue 12/11:20 pm -
2 stops10h 55m
Deal found 10/28![Southwest logo]()
$421
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/1112:39 pm -
1 stop8h 38m
Sun 11/155:00 am -
1 stop8h 11m
Deal found 10/27![American Airlines logo]()
$469
This United Airlines deal was found by Cheapflights users on 10/28. 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 11/175:00 am -
Nonstop4h 24m
Mon 11/231:30 pm -
Nonstop4h 50m
Deal found 10/28![United Airlines logo]()
$390
This Southwest deal was found by Cheapflights users on 10/26. 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.
Fri 12/185:25 am -
2 stops8h 15m
Sun 12/207:35 pm -
1 stop6h 55m
Deal found 10/26![Southwest logo]()
$435
This Delta deal was found by Cheapflights users on 10/30. 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 11/147:05 am -
2 stops13h 26m
Wed 11/186:01 am -
2 stops14h 10m
Deal found 10/30![Delta logo]()
$479
This American Airlines deal was found by Cheapflights users on 10/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1010:34 am -
1 stop7h 47m
Sat 11/143:21 pm -
1 stop8h 35m
Deal found 10/26![American Airlines logo]()
$516
Last-minute flights from San Francisco to IllinoisDiscover last-minute flight deals from San Francisco to Illinois. Data last updated October 31, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Illinois. Data last updated October 31, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1011:47 pm -
1 stop9h 35m
Wed 11/1812:27 pm -
2 stops26h 25m
Deal found 10/26![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 10/29. 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.
Fri 11/1311:47 pm -
1 stop7h 37m
Thu 11/196:30 am -
1 stop11h 54m
Deal found 10/29![Frontier logo]()
$301
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/1511:47 pm -
1 stop9h 38m
Wed 11/1812:27 pm -
1 stop12h 02m
Deal found 10/28![Frontier logo]()
$299
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/176:02 am -
2 stops15h 11m
Mon 11/2312:05 pm -
2 stops10h 20m
Deal found 10/28![Frontier logo]()
$299
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 11/199:09 am -
2 stops9h 21m
Mon 11/301:38 pm -
1 stop29h 57m
Deal found 10/27![Multiple Airlines logo]()
$263
This Southwest deal was found by Cheapflights users on 10/27. 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.
Thu 11/1911:35 am -
1 stop9h 10m
Thu 11/2610:30 am -
Nonstop4h 45m
Deal found 10/27![Southwest logo]()
$300
This American Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 11/199:13 am -
1 stop6h 46m
Mon 11/234:59 pm -
Nonstop5h 01m
Deal found 10/28![American Airlines logo]()
$300
This Delta deal was found by Cheapflights users on 10/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/196:17 am -
1 stop8h 30m
Tue 12/16:10 pm -
1 stop18h 45m
Deal found 10/28![Delta logo]()
$302
This Southwest deal was found by Cheapflights users on 10/28. 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 11/1911:35 am -
1 stop9h 10m
Mon 11/239:30 pm -
Nonstop4h 55m
Deal found 10/28![Southwest logo]()
$303
This Mytrip deal was found by Cheapflights users on 10/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/219:23 pm -
1 stop25h 30m
Thu 11/266:40 am -
2 stops10h 16m
Deal found 10/29![Frontier logo]()
$303
This Frontier deal was found by Cheapflights users on 10/28. 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.
Sun 11/2211:26 pm -
1 stop10h 55m
Thu 11/269:09 am -
1 stop9h 29m
Deal found 10/28![Frontier logo]()
$302
This WAYA deal was found by Cheapflights users on 10/29. 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 WAYA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/239:11 pm -
1 stop20h 55m
Mon 11/301:38 pm -
1 stop22h 02m
Deal found 10/29![Multiple Airlines logo]()
$290
One-way flights from San Francisco to IllinoisSearch for one-way flight options from San Francisco to Illinois. Find affordable one-way fares based on user searches. Data last updated October 31, 2026.
Search for one-way flight options from San Francisco to Illinois. Find affordable one-way fares based on user searches. Data last updated October 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 1/273:30 pm -
1 stop27h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 1/289:44 am -
1 stop8h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$120
This Southwest deal was found by Cheapflights users on 10/27. 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.
Mon 11/237:45 pm -
1 stop6h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Southwest logo]()
$132
This Super.com deal was found by Cheapflights users on 10/27. 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.
Sun 12/138:26 pm -
1 stop26h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$132
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Mon 12/2812:20 am -
1 stop9h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 10/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2010:59 pm -
2 stops28h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 12/1510:34 am -
2 stops21h 11m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/30![Frontier logo]()
$134
This Super.com deal was found by Cheapflights users on 10/29. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/224:11 pm -
1 stop11h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$134
This Kiwi.com deal was found by Cheapflights users on 10/27. 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.
Mon 11/309:11 pm -
2 stops34h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$135
This CheapOair deal was found by Cheapflights users on 10/29. 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.
Fri 12/2510:21 pm -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/29![Frontier logo]()
$135
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/711:58 pm -
1 stop14h 28m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$136
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/183:05 pm -
2 stops16h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Frontier logo]()
$136
Find flight deals from San Francisco to Illinois
Keep the following information in mind while searching for San Francisco to Illinois flight deals. Data was last updated October 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $263 (Kiwi.com) |
One-way from | $112 (Kiwi.com) |
Popular in | July |
Cheapest in | February |
Average price | $428 |
Good round-trip deal | $401 or less |
Good one-way deal | $204 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 7,457,451 searches. Data last updated October 31, 2026.
Use the filters below to find and compare flights from San Francisco to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoChicago
SFO San Francisco - MDW Chicago Midway
SFOMDW
San Francisco
Thu 12/10
8:20 am-5:15 pm
1 stop6h 55m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$132
San FranciscoChicago
SFO San Francisco - ORD Chicago O'Hare Intl
SFOORD
San Francisco
Thu 12/17
9:59 am-6:06 pm
1 stop6h 07m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$132
San FranciscoChicago
SFO San Francisco - ORD Chicago O'Hare Intl
SFOORD
San Francisco
Thu 12/31
10:34 pm-4:57 am
Nonstop4h 23m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$149
San FranciscoChicago
SFO San Francisco - MDW Chicago Midway
SFOMDW
San Francisco
Sat 2/20
11:55 pm-6:05 am
Nonstop4h 10m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$149
San FranciscoChicago
SFO San Francisco - ORD Chicago O'Hare Intl
SFOORD
San Francisco
Thu 11/19
7:04 am-6:59 pm
1 stop9h 55m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$156
San FranciscoChicago
SFO San Francisco - MDW Chicago Midway
SFOMDW
San Francisco
Tue 12/15
11:39 pm-8:55 am
1 stop7h 16m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$159
San FranciscoChicago
SFO San Francisco - MDW Chicago Midway
SFOMDW
San Francisco
Sat 1/30
12:15 pm-8:15 pm
1 stop6h 00m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$159
San FranciscoChicago
SFO San Francisco - MDW Chicago Midway
SFOMDW
San Francisco
Wed 12/16
6:00 am-4:50 pm
1 stop8h 50m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$159
San FranciscoChicago
SFO San Francisco - MDW Chicago Midway
SFOMDW
San Francisco
Fri 1/15
5:20 am-5:30 pm
2 stops10h 10m
Chicago Midway
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$164
San FranciscoChicago
SFO San Francisco - ORD Chicago O'Hare Intl
SFOORD
San Francisco
Mon 12/21
5:10 pm-11:33 pm
Nonstop4h 23m
Chicago O'Hare Intl
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$171
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from San Francisco to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from San Francisco with our price prediction graph.
SFO-PIA
SFO-MDW
SFO-ORD
SFO-MLI
SFO-BMI
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 San Francisco to Illinois
SFO-USIL
SFO-PIA
SFO-MDW
SFO-ORD
SFO-MLI
What is the cheapest month to book a flight from San Francisco to Illinois?
Currently, February is the cheapest month in which you can book a flight from San Francisco to Illinois (average of $372). Flying from San Francisco to Illinois in June is currently the most expensive (average of $484). 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 SFO to IL?
Find hourly flight availability from San Francisco 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 October 31, 2026.
It’s optimal to fly from San Francisco to Illinois in the evening. By choosing this option you can save up to 11% on the cost of your flight, compared to a flight at noon.
How much does it cost to fly round-trip from San Francisco to Illinois?
Airfare is below average for this route at the moment.
San Francisco to Illinois flights typically cost between $391 and $668 in January.The cheapest round-trip price found within the last 5 days was $293 on Frontier (Jan 27-Feb 12).
How far ahead should I book a flight from San Francisco to Illinois?
Booking 66 days in advance of your planned departure date is, on average, the best time to get cheap flights from San Francisco to Illinois. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from San Francisco to Illinois?
Use this chart to determine the cheapest time to fly round-trip from San Francisco to Illinois. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their San Francisco to Illinois flight should consider departing on Monday evenings when fares are most often at their lowest. Monday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
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 October 31, 2026.
Get a feel of what it's like to fly with Southwest,United Airlines, andJetBlue from San Francisco 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.
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Food
7.0
Overall
7.9
Boarding
8.1
Comfort
8.0
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from San Francisco 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 San Francisco to Illinois
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Illinois by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from San Francisco to Illinois by cabin class
Find flights from San Francisco to Illinois, based on your preferred cabin class, be it economy, premium economy, business, or first class.
San Francisco and Illinois flights
Browse other San Francisco and Illinois flight options. Last updated on October 31, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
San Francisco to Illinois flights
Consider these flights traveling from San Francisco to Illinois.
Top 7 airlines flying from San Francisco to Illinois
Discover the top 7 airlines that operate flights from San Francisco 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 7,457,451 searches. Data last updated October 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$122 | Average$376 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$157 | Average$302 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$204 | Average$401 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$224 | Average$306 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$237 | Average$537 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$262 | Average$518 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$272 | Average$439 | FlexibilityNo cancel fee | On-time63% |