$136+ Cheap flights from Illinois to Austin (AUS)
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 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — AUS
Nov 26 — Dec 31
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Austin 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 Illinois to AustinExplore the most affordable flight options available from Illinois to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
Explore the most affordable flight options available from Illinois to Austin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 27, 2026.
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 12/228:35 pm -
1 stop23h 29m
Wed 12/308:59 pm -
1 stop22h 31m
Deal found 10/26![Frontier logo]()
$249
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.
Sun 11/226:40 am -
1 stop12h 29m
Wed 11/259:14 pm -
1 stop27h 28m
Deal found 10/26![Frontier logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/1112:27 pm -
2 stops30h 59m
Sat 11/141:55 pm -
1 stop9h 52m
Deal found 10/24![Frontier logo]()
$250
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.
Thu 11/196:30 am -
1 stop12h 56m
Thu 11/264:40 pm -
1 stop8h 02m
Deal found 10/26![Frontier logo]()
$250
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 11/96:42 pm -
1 stop16h 43m
Sat 11/141:55 pm -
1 stop9h 52m
Deal found 10/25![Frontier logo]()
$251
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:30 am -
1 stop12h 56m
Mon 11/98:21 pm -
1 stop28h 00m
Deal found 10/25![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 12/296:52 am -
1 stop25h 41m
Thu 1/77:53 am -
1 stop8h 33m
Deal found 10/24![Frontier logo]()
$252
This Southwest deal was found by Cheapflights users on 10/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/88:55 pm -
Nonstop2h 50m
Sun 12/136:40 am -
Nonstop2h 30m
Deal found 10/22![Southwest logo]()
$253
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/187:45 am -
1 stop11h 04m
Tue 12/2210:45 am -
1 stop13h 28m
Deal found 10/22![Frontier logo]()
$253
This Southwest deal was found by Cheapflights users on 10/23. 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 11/125:15 am -
Nonstop2h 45m
Sun 11/156:40 am -
Nonstop2h 30m
Deal found 10/23![Southwest logo]()
$254
This Frontier deal was found by Cheapflights users on 10/23. 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.
Fri 11/136:30 am -
1 stop12h 56m
Tue 11/1712:24 pm -
1 stop6h 06m
Deal found 10/23![Frontier logo]()
$254
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.
Sun 11/86:08 am -
1 stop7h 46m
Tue 11/1012:24 pm -
1 stop11h 23m
Deal found 10/25![Frontier logo]()
$255
Best flights from Illinois to AustinDiscover carefully curated flight deals from Illinois to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
Discover carefully curated flight deals from Illinois to Austin that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 27, 2026.
This Delta deal was found by Cheapflights users on 10/22. 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 12/210:24 am -
1 stop7h 13m
Sun 12/65:20 am -
1 stop5h 08m
Deal found 10/22![Delta logo]()
$275
This United Airlines deal was found by Cheapflights users on 10/22. 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 11/217:55 pm -
Nonstop2h 57m
Mon 11/305:00 pm -
Nonstop2h 55m
Deal found 10/22![United Airlines logo]()
$295
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:42 pm -
1 stop18h 18m
Mon 11/168:21 pm -
2 stops21h 26m
Deal found 10/22![Frontier logo]()
$306
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.
Fri 12/186:30 am -
Nonstop2h 50m
Mon 12/211:05 pm -
1 stop5h 10m
Deal found 10/27![Southwest logo]()
$336
This American Airlines deal was found by Cheapflights users on 10/23. 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 12/24:04 pm -
1 stop6h 10m
Sun 12/65:05 pm -
1 stop6h 58m
Deal found 10/23![American Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2412:22 pm -
1 stop9h 42m
Sat 11/289:32 pm -
2 stops46h 29m
Deal found 10/22![Multiple Airlines logo]()
$542
This United Airlines deal was found by Cheapflights users on 10/23. 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 12/106:42 am -
1 stop5h 21m
Sat 1/912:10 pm -
2 stops9h 34m
Deal found 10/23![United Airlines logo]()
$315
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1111:08 am -
1 stop6h 31m
Mon 12/145:20 am -
1 stop5h 06m
Deal found 10/27![Delta logo]()
$339
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.
Wed 12/237:20 pm -
1 stop6h 00m
Tue 12/293:15 pm -
Nonstop2h 30m
Deal found 10/26![Southwest logo]()
$341
This United Airlines deal was found by Cheapflights users on 10/22. 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 12/510:55 am -
1 stop6h 13m
Tue 12/86:34 am -
Nonstop2h 47m
Deal found 10/22![United Airlines logo]()
$319
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.
Fri 1/154:22 pm -
1 stop6h 46m
Mon 1/1810:55 am -
1 stop4h 57m
Deal found 10/27![American Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 10/24. 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 11/235:15 am -
Nonstop2h 45m
Mon 11/238:50 pm -
1 stop4h 20m
Deal found 10/24![Southwest logo]()
$357
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.
Sat 12/56:11 am -
1 stop7h 48m
Sat 12/125:20 am -
1 stop6h 04m
Deal found 10/25![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 10/24. 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 2/166:05 am -
1 stop5h 24m
Sat 2/206:45 pm -
1 stop5h 54m
Deal found 10/24![American Airlines logo]()
$365
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.
Thu 12/105:00 am -
1 stop7h 03m
Sun 1/106:30 am -
1 stop7h 14m
Deal found 10/25![United Airlines logo]()
$339
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/212:06 pm -
1 stop6h 29m
Sun 12/65:20 am -
1 stop6h 04m
Deal found 10/26![Delta logo]()
$359
This Southwest deal was found by Cheapflights users on 10/24. 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 1/217:35 pm -
Nonstop2h 45m
Sun 1/2410:05 am -
Nonstop2h 35m
Deal found 10/24![Southwest logo]()
$364
This American Airlines deal was found by Cheapflights users on 10/24. 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 1/126:00 am -
1 stop5h 19m
Sat 1/164:31 pm -
2 stops7h 44m
Deal found 10/24![American Airlines logo]()
$370
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.
Fri 11/132:31 pm -
2 stops8h 44m
Mon 11/165:00 pm -
1 stop5h 59m
Deal found 10/25![United Airlines logo]()
$359
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 11/275:15 am -
Nonstop2h 45m
Mon 11/302:15 pm -
1 stop3h 55m
Deal found 10/26![Southwest logo]()
$371
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.
Mon 12/285:25 am -
1 stop5h 56m
Mon 1/45:30 am -
1 stop7h 26m
Deal found 10/25![Delta logo]()
$384
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.
Thu 11/269:10 am -
Nonstop3h 01m
Mon 11/303:49 pm -
Nonstop2h 51m
Deal found 10/25![United Airlines logo]()
$364
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/113:13 pm -
1 stop7h 27m
Sun 2/1410:13 am -
1 stop4h 30m
Deal found 10/25![American Airlines logo]()
$404
This Southwest deal was found by Cheapflights users on 10/22. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/135:15 am -
Nonstop2h 45m
Mon 11/1612:55 pm -
1 stop4h 10m
Deal found 10/22![Southwest logo]()
$380
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.
Thu 12/1712:27 pm -
1 stop31h 15m
Sat 12/198:27 pm -
1 stop15h 10m
Deal found 10/26![Multiple Airlines logo]()
$564
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 11/1010:40 am -
2 stops7h 11m
Sat 11/1412:49 pm -
1 stop5h 03m
Deal found 10/26![United Airlines logo]()
$374
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/123:11 pm -
1 stop7h 27m
Mon 11/165:03 pm -
1 stop7h 07m
Deal found 10/25![American Airlines logo]()
$413
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.
Fri 11/209:50 pm -
Nonstop2h 50m
Wed 11/256:25 am -
Nonstop2h 35m
Deal found 10/27![Southwest logo]()
$383
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.
Mon 12/219:50 am -
1 stop10h 14m
Fri 12/258:59 pm -
1 stop20h 53m
Deal found 10/26![Multiple Airlines logo]()
$565
This United Airlines deal was found by Cheapflights users on 10/22. 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.
Sun 12/202:35 pm -
2 stops8h 24m
Wed 12/307:14 pm -
1 stop5h 30m
Deal found 10/22![United Airlines logo]()
$380
Last-minute flights from Illinois to AustinDiscover last-minute flight deals from Illinois to Austin. Data last updated October 27, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Austin. Data last updated October 27, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/22. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/46:30 am -
1 stop12h 56m
Wed 11/1112:24 pm -
1 stop6h 06m
Deal found 10/22![Frontier logo]()
$253
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/76:30 am -
1 stop12h 56m
Mon 11/98:21 pm -
1 stop28h 00m
Deal found 10/25![Frontier logo]()
$251
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.
Sun 11/86:08 am -
1 stop7h 46m
Tue 11/1012:24 pm -
1 stop11h 23m
Deal found 10/25![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 10/23. 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.
Sun 11/89:51 am -
1 stop24h 57m
Tue 11/1012:24 pm -
1 stop6h 06m
Deal found 10/23![Frontier logo]()
$255
This Kiwi.com deal was found by Cheapflights users on 10/24. 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.
Sun 11/86:08 am -
1 stop7h 46m
Wed 11/1112:24 pm -
1 stop5h 23m
Deal found 10/24![Frontier logo]()
$256
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 11/96:42 pm -
1 stop16h 43m
Sat 11/141:55 pm -
1 stop9h 52m
Deal found 10/25![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 10/24. 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 11/1112:27 pm -
2 stops30h 59m
Sat 11/141:55 pm -
1 stop9h 52m
Deal found 10/24![Frontier logo]()
$250
This Southwest deal was found by Cheapflights users on 10/23. 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 11/125:15 am -
Nonstop2h 45m
Sun 11/156:40 am -
Nonstop2h 30m
Deal found 10/23![Southwest logo]()
$254
This Frontier deal was found by Cheapflights users on 10/23. 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.
Fri 11/136:30 am -
1 stop12h 56m
Tue 11/1712:24 pm -
1 stop6h 06m
Deal found 10/23![Frontier logo]()
$254
This Southwest deal was found by Cheapflights users on 10/23. 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 11/188:55 pm -
Nonstop2h 50m
Sun 11/229:40 pm -
Nonstop2h 30m
Deal found 10/23![Southwest logo]()
$253
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.
Thu 11/196:30 am -
1 stop12h 56m
Thu 11/264:40 pm -
1 stop8h 02m
Deal found 10/26![Frontier logo]()
$250
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.
Sun 11/226:40 am -
1 stop12h 29m
Wed 11/259:14 pm -
1 stop27h 28m
Deal found 10/26![Frontier logo]()
$249
One-way flights from Illinois to AustinSearch for one-way flight options from Illinois to Austin. Find affordable one-way fares based on user searches. Data last updated October 27, 2026.
Search for one-way flight options from Illinois to Austin. Find affordable one-way fares based on user searches. Data last updated October 27, 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.
Sat 12/512:28 pm -
1 stop21h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$136
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.
Thu 12/248:35 pm -
1 stop23h 29m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Frontier logo]()
$137
This Orbitz deal was found by Cheapflights users on 10/22. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/155:01 am -
1 stop15h 21m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$137
This Cheapflightsfares deal was found by Cheapflights users on 10/24. 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.
Sat 10/317:25 am -
1 stop5h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/24![Frontier logo]()
$138
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.
Wed 12/237:35 am -
1 stop12h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$138
This Kiwi.com deal was found by Cheapflights users on 10/22. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/112:33 pm -
2 stops30h 06m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/22![Frontier logo]()
$141
This Booking.com deal was found by Cheapflights users on 10/23. 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.
Thu 11/127:50 pm -
2 stops23h 36m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$141
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 11/2312:55 pm -
Nonstop3h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![United Airlines logo]()
$142
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/156:08 am -
1 stop7h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/25![Frontier logo]()
$143
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.
Sat 11/76:30 am -
1 stop12h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$143
This Super.com deal was found by Cheapflights users on 10/23. 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 11/228:42 pm -
1 stop23h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/23![Frontier logo]()
$144
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.
Tue 11/36:30 am -
1 stop12h 56m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Frontier logo]()
$144
Find flight deals from Illinois to Austin
Keep the following information in mind while searching for Illinois to Austin flight deals. Data was last updated October 27, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $249 (Kiwi.com) |
One-way from | $136 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $361 |
Good round-trip deal | $335 or less |
Good one-way deal | $182 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Austin 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 27, 2026.
Use the filters below to find and compare flights from Illinois to Austin that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoAustin
MDW Chicago Midway - AUS Austin Bergstrom
MDWAUS
Chicago Midway
Fri 1/15
1:00 pm-8:20 pm
1 stop7h 20m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$144
ChicagoAustin
MDW Chicago Midway - AUS Austin Bergstrom
MDWAUS
Chicago Midway
Sun 11/22
5:15 am-8:00 am
Nonstop2h 45m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$149
ChicagoAustin
RFD Chicago Greater Rockford - AUS Austin Bergstrom
RFDAUS
Chicago Greater Rockford
Wed 12/9
4:01 pm-8:07 pm
2 stops28h 06m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$154
ChicagoAustin
RFD Chicago Greater Rockford - AUS Austin Bergstrom
RFDAUS
Chicago Greater Rockford
Sun 1/10
12:42 pm-7:34 pm
1 stop30h 52m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$154
ChicagoAustin
ORD Chicago O'Hare Intl - AUS Austin Bergstrom
ORDAUS
Chicago O'Hare Intl
Wed 1/13
3:15 pm-6:19 pm
Nonstop3h 04m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$155
ChicagoAustin
MDW Chicago Midway - AUS Austin Bergstrom
MDWAUS
Chicago Midway
Tue 11/10
9:30 am-2:29 pm
1 stop4h 59m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$163
ChicagoAustin
ORD Chicago O'Hare Intl - AUS Austin Bergstrom
ORDAUS
Chicago O'Hare Intl
Wed 12/9
8:59 am-12:03 pm
Nonstop3h 04m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$166
ChicagoAustin
MDW Chicago Midway - AUS Austin Bergstrom
MDWAUS
Chicago Midway
Wed 12/9
10:05 am-12:50 pm
Nonstop2h 45m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$166
ChicagoAustin
MDW Chicago Midway - AUS Austin Bergstrom
MDWAUS
Chicago Midway
Sun 1/10
7:35 pm-10:20 pm
Nonstop2h 45m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$173
ChicagoAustin
RFD Chicago Greater Rockford - AUS Austin Bergstrom
RFDAUS
Chicago Greater Rockford
Tue 11/24
12:22 pm-10:04 pm
1 stop9h 42m
Austin Bergstrom
Wed 12/31
12:00 am-12:00 am
Nonstop0h 00m
$175
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Austin
Have a flexible travel schedule? Discover the best time to fly to Austin from Illinois with our price prediction graph.
MDW-AUS
RFD-AUS
ORD-AUS
PIA-AUS
MLI-AUS
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 Illinois to Austin
USIL-AUS
MDW-AUS
RFD-AUS
ORD-AUS
PIA-AUS
What is the cheapest month to book a flight from Illinois to Austin?
Currently, January is the cheapest month in which you can book a flight from Illinois to Austin (average of $213). Flying from Illinois to Austin in July is currently the most expensive (average of $407). 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 IL to AUS?
Find hourly flight availability from Illinois to Austin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 27, 2026.
Unlike in the evening, when flights are generally more expensive, you can save up to 12% on flights from Illinois to Austin by exploring options for tickets in the afternoon.
How much does it cost to fly round-trip from Illinois to Austin?
Airfare is below average for this route at the moment.
Illinois to Austin flights typically cost between $280 and $448 in November.The cheapest round-trip price found within the last 5 days was $249 on Frontier (Nov 22-Nov 25).
How far ahead should I book a flight from Illinois to Austin?
The best time to book flights from Illinois to Austin is 82 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Illinois to Austin?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Austin. Price data was last updated on October 24, 2026.
Travelers seeking maximum savings on their Illinois to Austin flight should consider departing on Monday afternoons when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Austin. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Austin?
Book flights to Austin if you plan to visit one of these locationsRound Rock
Cedar Park
San Marcos
Bastrop
Fredericksburg
Pflugerville
Georgetown
Dripping Springs
Seguin
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Illinois to Austin
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Austin
Explore flights to Austin departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 27, 2026.
Complete your trip
Complete your trip to Austin by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Austin by cabin class
Find flights from Illinois to Austin, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Austin flights
Browse other Illinois and Austin flight options. Last updated on October 27, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Austin flights
Consider these flights traveling from Illinois to Austin.
Top 6 airlines flying from Illinois to Austin
Discover the top 6 airlines that operate flights from Illinois to Austin. 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 27, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$59 | Average$223 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$190 | Average$274 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$191 | Average$388 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$197 | Average$380 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$199 | Average$370 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$230 | Average$338 | FlexibilityNo cancel fee | On-timeN/A |