$49+ Cheap flights from Knoxville (TYS) 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 11/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — ORD
Nov 9 — Nov 161
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Illinois with Cheapflights
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Cheapest flights from Knoxville to IllinoisExplore the most affordable flight options available from Knoxville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.
Explore the most affordable flight options available from Knoxville to Illinois. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 10, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/66:42 pm -
Nonstop1h 37m
Sun 11/86:08 am -
2 stops14h 57m
Deal found 10/5![Multiple Airlines logo]()
$259
This American Airlines deal was found by Cheapflights users on 10/9. 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 11/184:59 pm -
Nonstop2h 16m
Sat 11/216:49 pm -
1 stop4h 10m
Deal found 10/9![American Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 11/61:17 pm -
1 stop10h 26m
Fri 11/137:50 pm -
2 stops38h 33m
Deal found 10/9![Multiple Airlines logo]()
$260
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 10/229:05 am -
1 stop7h 25m
Tue 10/277:50 pm -
2 stops38h 39m
Deal found 10/7![Multiple Airlines logo]()
$262
This American Airlines deal was found by Cheapflights users on 10/9. 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 11/36:01 am -
1 stop5h 59m
Wed 11/48:55 pm -
Nonstop1h 52m
Deal found 10/9![American Airlines logo]()
$263
This American Airlines deal was found by Cheapflights users on 10/6. 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 11/68:04 pm -
1 stop4h 57m
Mon 11/98:05 am -
1 stop4h 37m
Deal found 10/6![American Airlines logo]()
$264
This Delta deal was found by Cheapflights users on 10/9. 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 11/137:22 pm -
1 stop4h 32m
Mon 11/161:05 pm -
1 stop4h 22m
Deal found 10/9![Delta logo]()
$265
This Delta deal was found by Cheapflights users on 10/9. 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 11/135:10 pm -
1 stop4h 07m
Mon 11/166:49 am -
1 stop6h 06m
Deal found 10/9![Delta logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/239:28 pm -
1 stop19h 02m
Thu 10/294:42 pm -
1 stop23h 55m
Deal found 10/6![Multiple Airlines logo]()
$266
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 11/66:42 pm -
Nonstop1h 37m
Sun 11/810:42 am -
1 stop28h 50m
Deal found 10/7![Allegiant Air logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 10/3012:57 pm -
1 stop10h 46m
Mon 11/27:50 pm -
2 stops37h 15m
Deal found 10/9![Multiple Airlines logo]()
$270
This Southwest deal was found by Cheapflights users on 10/7. 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 12/122:50 pm -
1 stop5h 45m
Sun 12/136:30 am -
2 stops7h 30m
Deal found 10/7![Southwest logo]()
$271
Best flights from Knoxville to IllinoisDiscover carefully curated flight deals from Knoxville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.
Discover carefully curated flight deals from Knoxville to Illinois that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated October 10, 2026.
This Southwest deal was found by Cheapflights users on 10/7. 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 12/122:50 pm -
1 stop5h 45m
Sun 12/136:30 am -
2 stops7h 30m
Deal found 10/7![Southwest logo]()
$271
This United Airlines deal was found by Cheapflights users on 10/6. 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 11/36:45 am -
Nonstop2h 09m
Tue 11/105:59 pm -
Nonstop1h 55m
Deal found 10/6![United Airlines logo]()
$272
This Delta deal was found by Cheapflights users on 10/9. 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 12/85:40 am -
1 stop5h 48m
Thu 12/179:37 am -
1 stop5h 29m
Deal found 10/9![Delta logo]()
$292
This American Airlines deal was found by Cheapflights users on 10/8. 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 10/236:05 pm -
2 stops7h 05m
Tue 10/276:14 am -
2 stops8h 07m
Deal found 10/8![American Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 10/5. 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 10/285:15 pm -
1 stop6h 00m
Thu 10/2912:45 pm -
1 stop7h 50m
Deal found 10/5![Southwest logo]()
$286
This Delta deal was found by Cheapflights users on 10/7. 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 12/117:10 am -
1 stop6h 51m
Sun 12/136:00 am -
1 stop4h 27m
Deal found 10/7![Delta logo]()
$292
This Delta deal was found by Cheapflights users on 10/6. 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 11/37:26 am -
1 stop6h 33m
Tue 11/1010:32 am -
1 stop5h 50m
Deal found 10/6![Delta logo]()
$292
This Southwest deal was found by Cheapflights users on 10/8. 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 10/237:25 pm -
2 stops6h 45m
Tue 10/271:35 pm -
2 stops5h 35m
Deal found 10/8![Southwest logo]()
$300
This Delta deal was found by Cheapflights users on 10/7. 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 12/122:36 pm -
1 stop5h 33m
Sun 12/135:05 pm -
1 stop3h 28m
Deal found 10/7![Delta logo]()
$292
This Southwest deal was found by Cheapflights users on 10/6. 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 11/612:50 pm -
2 stops9h 00m
Mon 11/95:20 am -
1 stop8h 40m
Deal found 10/6![Southwest logo]()
$301
This American Airlines deal was found by Cheapflights users on 10/6. 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 10/217:30 am -
1 stop4h 21m
Sun 10/256:00 am -
1 stop4h 05m
Deal found 10/6![American Airlines logo]()
$369
This United Airlines deal was found by Cheapflights users on 10/7. 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 1/71:55 pm -
1 stop6h 02m
Mon 1/115:00 am -
1 stop4h 10m
Deal found 10/7![United Airlines logo]()
$409
This Southwest deal was found by Cheapflights users on 10/9. 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 10/295:30 pm -
1 stop7h 50m
Tue 11/38:00 am -
1 stop3h 20m
Deal found 10/9![Southwest logo]()
$311
This Delta deal was found by Cheapflights users on 10/7. 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 10/2712:06 pm -
1 stop5h 52m
Mon 11/26:30 am -
1 stop6h 01m
Deal found 10/7![Delta logo]()
$319
This United Airlines deal was found by Cheapflights users on 10/6. 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 1/75:55 pm -
1 stop4h 49m
Mon 1/112:26 pm -
1 stop5h 39m
Deal found 10/6![United Airlines logo]()
$410
This Southwest deal was found by Cheapflights users on 10/5. 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 10/297:25 pm -
1 stop5h 30m
Sun 11/112:55 pm -
2 stops7h 45m
Deal found 10/5![Southwest logo]()
$315
This Delta deal was found by Cheapflights users on 10/9. 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 10/292:38 pm -
1 stop5h 33m
Sun 11/15:27 am -
1 stop4h 18m
Deal found 10/9![Delta logo]()
$334
This United Airlines deal was found by Cheapflights users on 10/8. 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 11/155:45 am -
1 stop5h 00m
Wed 11/189:00 am -
1 stop5h 52m
Deal found 10/8![United Airlines logo]()
$419
This American Airlines deal was found by Cheapflights users on 10/5. 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 10/206:55 pm -
1 stop6h 04m
Sat 10/245:00 am -
1 stop5h 05m
Deal found 10/5![American Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 10/9. 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 1/76:15 am -
1 stop7h 54m
Mon 1/116:05 pm -
Nonstop2h 00m
Deal found 10/9![United Airlines logo]()
$422
This Delta deal was found by Cheapflights users on 10/9. 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 12/144:01 pm -
1 stop5h 52m
Thu 12/178:39 am -
1 stop6h 27m
Deal found 10/9![Delta logo]()
$349
This Southwest deal was found by Cheapflights users on 10/7. 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 10/227:25 pm -
2 stops6h 45m
Mon 10/264:30 pm -
1 stop5h 15m
Deal found 10/7![Southwest logo]()
$354
This Delta deal was found by Cheapflights users on 10/5. 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 12/1812:32 pm -
1 stop5h 34m
Sun 1/36:25 am -
1 stop6h 14m
Deal found 10/5![Delta logo]()
$359
This United Airlines deal was found by Cheapflights users on 10/5. 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 10/206:00 am -
1 stop5h 06m
Sat 10/246:15 am -
1 stop5h 59m
Deal found 10/5![United Airlines logo]()
$439
This United Airlines deal was found by Cheapflights users on 10/9. 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 10/246:00 am -
1 stop5h 12m
Wed 10/282:30 pm -
1 stop5h 25m
Deal found 10/9![United Airlines logo]()
$469
This Delta deal was found by Cheapflights users on 10/8. 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 10/157:26 am -
1 stop4h 03m
Wed 10/215:27 am -
1 stop4h 27m
Deal found 10/8![Delta logo]()
$409
This American Airlines deal was found by Cheapflights users on 10/5. 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 11/47:52 am -
1 stop4h 47m
Fri 11/66:50 pm -
1 stop15h 05m
Deal found 10/5![American Airlines logo]()
$891
Last-minute flights from Knoxville to IllinoisDiscover last-minute flight deals from Knoxville to Illinois. Data last updated October 10, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Illinois. Data last updated October 10, 2026 and is based on user searches.
This Cheapflightsfares deal was found by Cheapflights users on 10/8. 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.
Fri 10/911:04 am -
Nonstop1h 32m
Mon 10/121:26 pm -
Nonstop1h 25m
Deal found 10/8![Allegiant Air logo]()
$275
This Cheapflightsfares deal was found by Cheapflights users on 10/5. 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.
Mon 10/1212:04 pm -
Nonstop1h 32m
Fri 10/164:30 pm -
Nonstop1h 25m
Deal found 10/5![Allegiant Air logo]()
$272
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/171:52 pm -
1 stop21h 56m
Mon 10/191:26 pm -
Nonstop1h 25m
Deal found 10/6![Allegiant Air logo]()
$276
This United Airlines deal was found by Cheapflights users on 10/6. 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 10/176:00 am -
Nonstop1h 56m
Sat 10/2410:30 am -
Nonstop1h 44m
Deal found 10/6![United Airlines logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 10/226:23 pm -
1 stop27h 02m
Mon 10/261:26 pm -
Nonstop1h 25m
Deal found 10/7![Allegiant Air logo]()
$288
This Kiwi.com deal was found by Cheapflights users on 10/6. 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 10/231:04 pm -
Nonstop1h 32m
Sat 10/246:21 am -
2 stops25h 04m
Deal found 10/6![Multiple Airlines logo]()
$278
This American Airlines deal was found by Cheapflights users on 10/8. 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 10/236:55 pm -
1 stop6h 15m
Tue 10/275:29 pm -
1 stop5h 30m
Deal found 10/8![American Airlines logo]()
$349
This Kiwi.com deal was found by Cheapflights users on 10/4. 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 10/241:52 pm -
1 stop18h 56m
Mon 10/261:26 pm -
Nonstop1h 25m
Deal found 10/4![Allegiant Air logo]()
$271
This Southwest deal was found by Cheapflights users on 10/5. 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 10/285:15 pm -
1 stop6h 00m
Thu 10/2912:45 pm -
1 stop7h 50m
Deal found 10/5![Southwest logo]()
$286
This Kiwi.com deal was found by Cheapflights users on 10/5. 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 11/66:42 pm -
Nonstop1h 37m
Sun 11/86:08 am -
2 stops14h 57m
Deal found 10/5![Multiple Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 11/66:42 pm -
Nonstop1h 37m
Sun 11/810:42 am -
1 stop28h 50m
Deal found 10/7![Allegiant Air logo]()
$270
This Delta deal was found by Cheapflights users on 10/8. 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 11/137:22 pm -
1 stop4h 32m
Mon 11/166:00 am -
1 stop4h 28m
Deal found 10/8![Delta logo]()
$265
One-way flights from Knoxville to IllinoisSearch for one-way flight options from Knoxville to Illinois. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.
Search for one-way flight options from Knoxville to Illinois. Find affordable one-way fares based on user searches. Data last updated October 10, 2026.
This CheapOair deal was found by Cheapflights users on 10/6. 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 11/66:42 pm -
Nonstop1h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Allegiant Air logo]()
$49
This Kiwi.com deal was found by Cheapflights users on 10/7. 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 12/141:58 pm -
1 stop7h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/7![Multiple Airlines logo]()
$79
This CheapOair deal was found by Cheapflights users on 10/6. 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 10/163:08 pm -
Nonstop1h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Allegiant Air logo]()
$82
This Orbitz deal was found by Cheapflights users on 10/6. 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.
Mon 10/1212:04 pm -
Nonstop1h 32m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Allegiant Air logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 12/71:58 pm -
2 stops42h 22m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$95
This CheapOair deal was found by Cheapflights users on 10/6. 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.
Mon 11/93:04 pm -
Nonstop1h 37m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Allegiant Air logo]()
$98
This Southwest deal was found by Cheapflights users on 10/6. 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 12/122:50 pm -
1 stop5h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/6![Southwest logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 11/126:33 pm -
2 stops43h 18m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$114
This Southwest deal was found by Cheapflights users on 10/8. 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 11/72:50 pm -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Southwest logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 11/56:30 am -
1 stop18h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 10/8. 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 11/162:21 pm -
2 stops28h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/8![Multiple Airlines logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 10/9. 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 12/111:58 pm -
1 stop7h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/9![Multiple Airlines logo]()
$121
Find flight deals from Knoxville to Illinois
Keep the following information in mind while searching for Knoxville to Illinois flight deals. Data was last updated October 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $259 (Kiwi.com) |
One-way from | $49 (CheapOair) |
Popular in | September |
Cheapest in | January |
Average price | $309 |
Good round-trip deal | $159 or less |
Good one-way deal | $292 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville 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 10, 2026.
Use the filters below to find and compare flights from Knoxville to Illinois that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Mon 12/14
5:15 pm-10:40 pm
1 stop6h 25m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Thu 11/12
7:25 pm-12:10 am
1 stop5h 45m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Wed 12/2
5:15 pm-10:45 pm
1 stop6h 30m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Sat 12/12
2:50 pm-7:35 pm
1 stop5h 45m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Mon 11/16
5:15 pm-10:45 pm
1 stop6h 30m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Wed 11/18
5:15 pm-10:45 pm
1 stop6h 30m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$106
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Mon 11/16
2:21 pm-5:47 pm
2 stops28h 26m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$116
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Tue 12/15
2:40 pm-7:55 pm
1 stop6h 15m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$133
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Fri 11/6
7:25 pm-12:10 am
1 stop5h 45m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$133
KnoxvilleChicago
TYS Knoxville McGhee Tyson - MDW Chicago Midway
TYSMDW
Knoxville McGhee Tyson
Thu 12/24
1:00 pm-7:30 pm
1 stop7h 30m
Chicago Midway
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$147
Showing 1-10 of 56 resultsSorted by cheapest first
Best time to book a flight from Knoxville to Illinois
Have a flexible travel schedule? Discover the best time to fly to Illinois from Knoxville with our price prediction graph.
TYS-MDW
TYS-PIA
TYS-ORD
TYS-MLI
TYS-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 Knoxville to Illinois
TYS-USIL
TYS-MDW
TYS-PIA
TYS-ORD
TYS-MLI
What is the cheapest month to book a flight from Knoxville to Illinois?
Currently, January is the cheapest month in which you can book a flight from Knoxville to Illinois (average of $248). Flying from Knoxville to Illinois in September is currently the most expensive (average of $390). 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 TYS to IL?
Find hourly flight availability from Knoxville 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 10, 2026.
It’s typically best to fly out from Knoxville to Illinois in the morning. Doing so could potentially save you 27% on the flight price compared to flying at noon, which is usually more expensive.
Weekly flight availability from Knoxville to Illinois
Explore weekly flight availability from Knoxville 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 October 10, 2026.
The most flights from TYS to USIL are scheduled on a Friday (34 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (18 on average).
How much does it cost to fly round-trip from Knoxville to Illinois?
Airfare is below average for this route at the moment.
Knoxville to Illinois flights typically cost between $264 and $619 in November.The cheapest round-trip price found within the last 5 days was $259 on American Airlines (Nov 18-Nov 21).
How far ahead should I book a flight from Knoxville to Illinois?
To ensure you get the cheapest price possible for a flight from Knoxville to Illinois, you should look to book at least 45 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 day to fly from Knoxville to Illinois?
Use this chart to determine the cheapest time to fly round-trip from Knoxville to Illinois. Price data was last updated on November 2, 2025.
Travelers seeking maximum savings on their Knoxville to Illinois flight should consider departing on Monday afternoons when fares are most often at their lowest. Sunday evenings 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 10, 2026.
Read through reviews of airlines operating flights from Knoxville to Illinois, such as United Airlines,Allegiant Air, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Food
6.7
Entertainment
7.1
Boarding
7.7
Crew
8.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
4.0
OkayChris,Aug 2026
MIA - ORD
Related info for your journey
Find useful and relevant information for your journey from Knoxville 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 Knoxville to Illinois
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Complete your trip
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Knoxville and Illinois flights
Browse other Knoxville and Illinois flight options. Last updated on October 10, 2026.
Popular flight searches
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Knoxville to Illinois flights
Consider these flights traveling from Knoxville to Illinois.
Top 3 airlines flying from Knoxville to Illinois
Discover the top 3 airlines that operate flights from Knoxville 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$78 | Average$141 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$189 | Average$325 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$189 | Average$360 | FlexibilityNo cancel fee | On-time71% |