$69+ Cheap flights from Illinois to Knoxville (TYS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — TYS
Sep 27 — Oct 41
Round-trip
1 adult, Economy
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Find cheap flights from Illinois to Knoxville 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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Illinois to Knoxville
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Cheapest flights from Illinois to KnoxvilleExplore the most affordable flight options available from Illinois to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2026.
Explore the most affordable flight options available from Illinois to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 28, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/26. 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.
Sat 10/248:04 am -
1 stop23h 21m
Thu 10/296:30 am -
1 stop18h 51m
Deal found 8/26![Multiple Airlines logo]()
$236
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Fri 10/23:50 pm -
1 stop27h 02m
Tue 10/66:04 pm -
1 stop22h 16m
Deal found 8/25![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 11/126:16 am -
2 stops24h 29m
Fri 11/131:49 pm -
Nonstop1h 37m
Deal found 8/26![Multiple Airlines logo]()
$240
This Kiwi.com deal was found by Cheapflights users on 8/23. 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.
Mon 10/268:04 am -
1 stop10h 20m
Thu 10/296:30 am -
1 stop16h 05m
Deal found 8/23![Multiple Airlines logo]()
$241
This Southwest deal was found by Cheapflights users on 8/26. 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.
Tue 9/226:00 am -
1 stop7h 20m
Thu 9/245:45 pm -
1 stop5h 40m
Deal found 8/26![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/199:23 am -
1 stop6h 35m
Tue 9/226:00 pm -
1 stop5h 00m
Deal found 8/25![United Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 11/164:31 pm -
Nonstop1h 30m
Wed 11/1812:56 pm -
1 stop29h 11m
Deal found 8/26![Allegiant Air logo]()
$245
This CheapOair deal was found by Cheapflights users on 8/23. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/912:26 pm -
Nonstop1h 25m
Mon 10/1212:04 pm -
Nonstop1h 32m
Deal found 8/23![Allegiant Air logo]()
$247
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:50 am -
1 stop5h 25m
Tue 9/2212:45 pm -
2 stops7h 15m
Deal found 8/25![Southwest logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 11/133:16 pm -
Nonstop1h 30m
Wed 11/1812:56 pm -
1 stop29h 11m
Deal found 8/26![Allegiant Air logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 10/37:11 am -
1 stop12h 35m
Tue 10/66:04 pm -
1 stop22h 16m
Deal found 8/27![Multiple Airlines logo]()
$251
This United Airlines deal was found by Cheapflights users on 8/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:29 pm -
1 stop6h 20m
Thu 10/2210:42 am -
1 stop6h 01m
Deal found 8/24![United Airlines logo]()
$251
Best flights from Illinois to KnoxvilleDiscover carefully curated flight deals from Illinois to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 28, 2026.
Discover carefully curated flight deals from Illinois to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 28, 2026.
This Southwest deal was found by Cheapflights users on 8/27. 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 11/128:30 am -
1 stop5h 30m
Sat 11/142:50 pm -
1 stop5h 45m
Deal found 8/27![Southwest logo]()
$243
This United Airlines deal was found by Cheapflights users on 8/23. 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.
Fri 11/136:55 am -
Nonstop1h 58m
Mon 11/165:40 pm -
Nonstop2h 03m
Deal found 8/23![United Airlines logo]()
$259
This Delta deal was found by Cheapflights users on 8/27. 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.
Mon 10/127:20 pm -
1 stop3h 39m
Fri 10/164:57 pm -
1 stop5h 26m
Deal found 8/27![Delta logo]()
$272
This American Airlines deal was found by Cheapflights users on 8/24. 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.
Sat 9/125:28 pm -
1 stop4h 14m
Sat 9/196:06 pm -
1 stop5h 51m
Deal found 8/24![American Airlines logo]()
$314
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 10/511:19 am -
1 stop7h 36m
Thu 10/89:28 pm -
1 stop16h 08m
Deal found 8/26![Allegiant Air logo]()
$417
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/227:05 am -
1 stop6h 15m
Tue 9/298:05 am -
2 stops9h 40m
Deal found 8/25![Southwest logo]()
$248
This Delta deal was found by Cheapflights users on 8/27. 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.
Mon 10/510:05 am -
1 stop4h 35m
Fri 10/95:40 am -
1 stop4h 29m
Deal found 8/27![Delta logo]()
$272
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/248:40 am -
2 stops9h 55m
Sat 10/316:40 am -
2 stops7h 40m
Deal found 8/25![Southwest logo]()
$253
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Sat 9/266:59 am -
Nonstop1h 46m
Sat 10/36:00 am -
Nonstop1h 56m
Deal found 8/27![United Airlines logo]()
$279
This Southwest deal was found by Cheapflights users on 8/27. 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.
Wed 11/111:15 pm -
2 stops6h 30m
Sat 11/148:15 am -
2 stops10h 10m
Deal found 8/27![Southwest logo]()
$253
This Delta deal was found by Cheapflights users on 8/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1311:19 am -
1 stop5h 30m
Sun 11/157:22 pm -
1 stop5h 32m
Deal found 8/23![Delta logo]()
$279
This American Airlines deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/263:53 pm -
1 stop4h 13m
Sat 10/38:14 pm -
1 stop4h 51m
Deal found 8/27![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:00 am -
1 stop4h 28m
Sun 11/155:40 am -
1 stop5h 44m
Deal found 8/23![Delta logo]()
$279
This Southwest deal was found by Cheapflights users on 8/23. 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.
Fri 11/137:20 am -
1 stop6h 40m
Tue 11/171:00 pm -
2 stops10h 40m
Deal found 8/23![Southwest logo]()
$258
This United Airlines deal was found by Cheapflights users on 8/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/225:30 pm -
1 stop5h 53m
Tue 9/296:00 am -
1 stop7h 13m
Deal found 8/24![United Airlines logo]()
$313
This American Airlines deal was found by Cheapflights users on 8/26. 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.
Sun 11/15:03 pm -
1 stop5h 44m
Sat 11/712:20 pm -
1 stop4h 15m
Deal found 8/26![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 9/304:57 pm -
1 stop4h 45m
Wed 10/74:49 pm -
1 stop6h 12m
Deal found 8/25![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/172:31 pm -
1 stop3h 18m
Sat 11/216:07 pm -
1 stop4h 27m
Deal found 8/26![Delta logo]()
$290
This Southwest deal was found by Cheapflights users on 8/23. 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 10/217:45 am -
2 stops7h 55m
Mon 10/267:25 pm -
1 stop5h 30m
Deal found 8/23![Southwest logo]()
$270
This United Airlines deal was found by Cheapflights users on 8/24. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:22 pm -
1 stop4h 37m
Sun 9/206:00 am -
Nonstop1h 55m
Deal found 8/24![United Airlines logo]()
$329
This American Airlines deal was found by Cheapflights users on 8/25. 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.
Mon 10/55:03 pm -
1 stop5h 56m
Sat 10/106:55 pm -
1 stop6h 16m
Deal found 8/25![American Airlines logo]()
$319
This Delta deal was found by Cheapflights users on 8/27. 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.
Tue 12/151:30 pm -
1 stop4h 26m
Fri 1/87:20 pm -
1 stop5h 30m
Deal found 8/27![Delta logo]()
$299
This American Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 9/224:03 pm -
1 stop5h 47m
Tue 9/298:18 am -
2 stops9h 09m
Deal found 8/25![American Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/208:05 am -
2 stops9h 35m
Tue 1/261:15 pm -
2 stops9h 05m
Deal found 8/25![Southwest logo]()
$297
This Delta deal was found by Cheapflights users on 8/27. 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.
Mon 10/195:27 am -
1 stop4h 27m
Mon 10/267:26 am -
1 stop6h 33m
Deal found 8/27![Delta logo]()
$299
This United Airlines deal was found by Cheapflights users on 8/26. 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 1/61:20 pm -
1 stop6h 45m
Sun 1/107:00 am -
1 stop4h 21m
Deal found 8/26![United Airlines logo]()
$369
This Delta deal was found by Cheapflights users on 8/26. 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.
Mon 10/196:04 am -
1 stop6h 36m
Mon 10/267:26 am -
1 stop6h 21m
Deal found 8/26![Delta logo]()
$299
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:10 am -
2 stops7h 30m
Sun 11/227:25 pm -
1 stop5h 40m
Deal found 8/25![Southwest logo]()
$303
This American Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 10/145:03 pm -
1 stop5h 56m
Mon 10/196:55 pm -
1 stop6h 16m
Deal found 8/25![American Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Fri 9/188:02 pm -
Nonstop1h 47m
Sun 9/206:00 am -
Nonstop1h 55m
Deal found 8/27![United Airlines logo]()
$384
Last-minute flights from Illinois to KnoxvilleDiscover last-minute flight deals from Illinois to Knoxville. Data last updated August 28, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Knoxville. Data last updated August 28, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/26. 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.
Thu 9/1710:05 am -
1 stop4h 35m
Mon 9/217:25 pm -
1 stop5h 17m
Deal found 8/26![Delta logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 8/25. 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.
Thu 9/177:11 am -
1 stop8h 20m
Mon 9/215:40 pm -
1 stop22h 40m
Deal found 8/25![Multiple Airlines logo]()
$267
This United Airlines deal was found by Cheapflights users on 8/25. 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 9/199:23 am -
1 stop6h 35m
Tue 9/226:00 pm -
1 stop5h 00m
Deal found 8/25![United Airlines logo]()
$243
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/196:50 am -
1 stop5h 25m
Tue 9/2212:45 pm -
2 stops7h 15m
Deal found 8/25![Southwest logo]()
$248
This Southwest deal was found by Cheapflights users on 8/26. 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.
Tue 9/226:00 am -
1 stop7h 20m
Thu 9/245:45 pm -
1 stop5h 40m
Deal found 8/26![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 8/25. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/2212:45 pm -
2 stops6h 10m
Tue 9/295:30 pm -
1 stop3h 40m
Deal found 8/25![Southwest logo]()
$270
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 9/227:11 am -
1 stop25h 53m
Thu 9/245:38 pm -
1 stop17h 42m
Deal found 8/26![Multiple Airlines logo]()
$271
This Kiwi.com deal was found by Cheapflights users on 8/26. 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.
Wed 9/237:11 am -
1 stop25h 53m
Wed 9/3010:28 am -
1 stop13h 31m
Deal found 8/26![Multiple Airlines logo]()
$257
This American Airlines deal was found by Cheapflights users on 8/25. 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.
Wed 9/238:00 am -
Nonstop1h 50m
Tue 9/298:00 am -
Nonstop2h 10m
Deal found 8/25![American Airlines logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 8/23. 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.
Wed 9/237:11 am -
1 stop25h 53m
Mon 10/58:14 pm -
1 stop20h 06m
Deal found 8/23![Multiple Airlines logo]()
$260
This Southwest deal was found by Cheapflights users on 8/26. 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 9/2312:45 pm -
1 stop6h 10m
Wed 9/307:00 am -
1 stop4h 50m
Deal found 8/26![Southwest logo]()
$265
This Kiwi.com deal was found by Cheapflights users on 8/26. 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 9/242:46 pm -
2 stops45h 18m
Tue 10/66:04 pm -
1 stop22h 16m
Deal found 8/26![Multiple Airlines logo]()
$270
One-way flights from Illinois to KnoxvilleSearch for one-way flight options from Illinois to Knoxville. Find affordable one-way fares based on user searches. Data last updated August 28, 2026.
Search for one-way flight options from Illinois to Knoxville. Find affordable one-way fares based on user searches. Data last updated August 28, 2026.
This CheapOair deal was found by Cheapflights users on 8/26. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:26 pm -
Nonstop1h 25m
Deal found 8/26![Allegiant Air logo]()
$69
This Cheapflightsfares deal was found by Cheapflights users on 8/24. 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.
Fri 10/302:26 pm -
Nonstop1h 25m
Deal found 8/24![Allegiant Air logo]()
$71
This Cheapflightsfares deal was found by Cheapflights users on 8/26. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/232:26 pm -
Nonstop1h 25m
Deal found 8/26![Allegiant Air logo]()
$76
This CheapOair deal was found by Cheapflights users on 8/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/202:30 pm -
Nonstop1h 27m
Deal found 8/28![Allegiant Air logo]()
$82
This CheapOair deal was found by Cheapflights users on 8/25. 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.
Fri 10/22:24 pm -
Nonstop1h 25m
Deal found 8/25![Allegiant Air logo]()
$87
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 10/16:20 am -
1 stop10h 01m
Deal found 8/27![Multiple Airlines logo]()
$92
This Kiwi.com deal was found by Cheapflights users on 8/23. 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.
Tue 9/227:11 am -
1 stop25h 53m
Deal found 8/23![Multiple Airlines logo]()
$98
This Kiwi.com deal was found by Cheapflights users on 8/26. 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.
Wed 9/237:11 am -
1 stop25h 53m
Deal found 8/26![Multiple Airlines logo]()
$102
This Kiwi.com deal was found by Cheapflights users on 8/26. 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.
Sat 10/248:04 am -
1 stop23h 21m
Deal found 8/26![Multiple Airlines logo]()
$106
This Kiwi.com deal was found by Cheapflights users on 8/26. 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.
Sat 9/267:11 am -
1 stop7h 42m
Deal found 8/26![Multiple Airlines logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 8/24. 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.
Sat 9/127:11 am -
1 stop25h 53m
Deal found 8/24![Multiple Airlines logo]()
$118
This Southwest deal was found by Cheapflights users on 8/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/191:55 pm -
1 stop4h 30m
Deal found 8/27![Southwest logo]()
$122
Find flight deals from Illinois to Knoxville
Keep the following information in mind while searching for Illinois to Knoxville flight deals. Data was last updated August 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $236 (Kiwi.com) |
One-way from | $69 (CheapOair) |
Popular in | March |
Cheapest in | June |
Average price | $293 |
Good round-trip deal | $110 or less |
Good one-way deal | $119 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Knoxville 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 August 28, 2026.
Use the filters below to find and compare flights from Illinois to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoKnoxville
MDW Chicago Midway - TYS Knoxville McGhee Tyson
MDWTYS
Chicago Midway
Thu 11/12
8:30 am-3:00 pm
1 stop5h 30m
Knoxville McGhee Tyson
Sat 11/14
2:50 pm-7:35 pm
1 stop5h 45m
$243
St. LouisKnoxville
STL Lambert-St Louis - TYS Knoxville McGhee Tyson
STLTYS
Lambert-St Louis
Tue 9/22
7:05 am-2:20 pm
1 stop6h 15m
Knoxville McGhee Tyson
Tue 9/29
8:05 am-4:45 pm
2 stops9h 40m
$248
ChicagoKnoxville
MDW Chicago Midway - TYS Knoxville McGhee Tyson
MDWTYS
Chicago Midway
Sat 10/24
8:40 am-7:35 pm
2 stops9h 55m
Knoxville McGhee Tyson
Sat 10/31
6:40 am-1:20 pm
2 stops7h 40m
$253
ChicagoKnoxville
MDW Chicago Midway - TYS Knoxville McGhee Tyson
MDWTYS
Chicago Midway
Wed 11/11
1:15 pm-8:45 pm
2 stops6h 30m
Knoxville McGhee Tyson
Sat 11/14
8:15 am-5:25 pm
2 stops10h 10m
$253
ChicagoKnoxville
MDW Chicago Midway - TYS Knoxville McGhee Tyson
MDWTYS
Chicago Midway
Fri 11/13
7:20 am-3:00 pm
1 stop6h 40m
Knoxville McGhee Tyson
Tue 11/17
1:00 pm-10:40 pm
2 stops10h 40m
$258
ChicagoKnoxville
ORD Chicago O'Hare Intl - TYS Knoxville McGhee Tyson
ORDTYS
Chicago O'Hare Intl
Fri 11/13
6:55 am-9:53 am
Nonstop1h 58m
Knoxville McGhee Tyson
Mon 11/16
5:40 pm-6:43 pm
Nonstop2h 03m
$259
ChicagoKnoxville
MDW Chicago Midway - TYS Knoxville McGhee Tyson
MDWTYS
Chicago Midway
Wed 10/21
7:45 am-4:40 pm
2 stops7h 55m
Knoxville McGhee Tyson
Mon 10/26
7:25 pm-11:55 pm
1 stop5h 30m
$270
St. LouisKnoxville
STL Lambert-St Louis - TYS Knoxville McGhee Tyson
STLTYS
Lambert-St Louis
Mon 10/12
7:20 pm-11:59 pm
1 stop3h 39m
Knoxville McGhee Tyson
Fri 10/16
4:57 pm-9:23 pm
1 stop5h 26m
$272
St. LouisKnoxville
STL Lambert-St Louis - TYS Knoxville McGhee Tyson
STLTYS
Lambert-St Louis
Mon 10/5
10:05 am-3:40 pm
1 stop4h 35m
Knoxville McGhee Tyson
Fri 10/9
5:40 am-9:09 am
1 stop4h 29m
$272
Quickest round-trip
ChicagoKnoxville
ORD Chicago O'Hare Intl - TYS Knoxville McGhee Tyson
ORDTYS
Chicago O'Hare Intl
Sat 9/26
6:59 am-9:45 am
Nonstop1h 46m
Knoxville McGhee Tyson
Sat 10/3
6:00 am-6:56 am
Nonstop1h 56m
$279
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Illinois with our price prediction graph.
MDW-TYS
STL-TYS
PIA-TYS
ORD-TYS
MLI-TYS
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 Knoxville
USIL-TYS
MDW-TYS
STL-TYS
PIA-TYS
ORD-TYS
What is the cheapest month to book a flight from Illinois to Knoxville?
Currently, June is the cheapest month in which you can book a flight from Illinois to Knoxville (average of $262). Flying from Illinois to Knoxville in May is currently the most expensive (average of $339). 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 TYS?
Find hourly flight availability from Illinois to Knoxville. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 28, 2026.
When flying from Illinois to Knoxville, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 24% versus a flight at noon.
Weekly flight availability from Illinois to Knoxville
Explore weekly flight availability from Illinois to Knoxville. 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 August 28, 2026.
The most flights from USIL to TYS are scheduled on a Wednesday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (7 on average).
How much does it cost to fly round-trip from Illinois to Knoxville?
Airfare is below average for this route at the moment.
Illinois to Knoxville flights typically cost between $259 and $459 in October.The cheapest round-trip price found within the last 5 days was $236 on Multiple Airlines (Oct 24-Oct 29).
How far ahead should I book a flight from Illinois to Knoxville?
The price you pay for your flight from Illinois to Knoxville may vary depending on when you book. For the best chance of a lower fare, look to book 78 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Illinois to Knoxville?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Knoxville. Price data was last updated on October 19, 2025.
Travelers seeking maximum savings on their Illinois to Knoxville flight should consider departing on Tuesday at noon when fares are most often at their lowest. Saturday 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 Knoxville. 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 Knoxville?
Book flights to Knoxville if you plan to visit one of these locationsCherokee
Crossville
Morristown
Bryson City
Murphy
Alcoa
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Alternative routes for Illinois to Knoxville
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Complete your trip
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Search flights from Illinois to Knoxville by cabin class
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Other flights to Knoxville
Explore flights to Knoxville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 28, 2026.
Illinois and Knoxville flights
Browse other Illinois and Knoxville flight options. Last updated on August 28, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Knoxville flights
Consider these flights traveling from Illinois to Knoxville.
Top 3 airlines flying from Illinois to Knoxville
Discover the top 3 airlines that operate flights from Illinois to Knoxville. 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 August 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$82 | Average$149 | FlexibilityNo cancel fee | On-time88% | |
| Cheapest$188 | Average$411 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$189 | Average$369 | FlexibilityNo cancel fee | On-time69% |