$106+ Cheap flights from Knoxville to Ontario (TYS - ONT)
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 4/30. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — ONT
May 18 — May 251
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Ontario with Cheapflights
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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 Knoxville to OntarioExplore the most affordable flight options available from Knoxville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.
Explore the most affordable flight options available from Knoxville to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 18, 2026.
This CheapOair deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 5/118:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Mon 5/186:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 4/13![Frontier logo]()
$216
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 6/128:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Fri 6/266:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 4/14![Frontier logo]()
$261
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/298:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Wed 6/36:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 4/14![Frontier logo]()
$270
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 6/128:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Mon 6/156:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 4/14![Frontier logo]()
$281
This Kiwi.com deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 6/126:30 am
TYS
- ONT
2 stops16h 21m
Multiple Airlines
Wed 6/176:00 am
ONT
- TYS
1 stop28h 52m
Multiple Airlines
Deal found 4/13![Multiple Airlines logo]()
$325
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/228:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Mon 5/256:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 4/14![Frontier logo]()
$335
This CheapOair deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 5/158:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Fri 5/226:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 4/15![Frontier logo]()
$346
This CheapOair deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 6/18:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Mon 6/86:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 4/17![Frontier logo]()
$357
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/273:30 pm
TYS
- ONT
1 stop9h 18m
Delta
Tue 6/210:00 pm
ONT
- TYS
1 stop8h 34m
Delta
Deal found 4/16![Delta logo]()
$359
This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 6/266:30 am
TYS
- ONT
2 stops16h 21m
Multiple Airlines
Sat 7/1110:50 am
ONT
- TYS
1 stop24h 01m
Multiple Airlines
Deal found 4/16![Multiple Airlines logo]()
$362
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:55 pm
TYS
- ONT
1 stop7h 40m
United Airlines
Tue 5/196:59 pm
ONT
- TYS
2 stops12h 07m
United Airlines
Deal found 4/15![United Airlines logo]()
$364
This Orbitz deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
Thu 4/164:28 pm
TYS
- ONT
1 stop10h 27m
Frontier
Wed 4/2212:59 am
ONT
- TYS
1 stop11h 34m
Frontier
Deal found 4/15![Frontier logo]()
$365
Best flights from Knoxville to OntarioDiscover carefully curated flight deals from Knoxville to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
Discover carefully curated flight deals from Knoxville to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 18, 2026.
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/207:27 am
TYS
- ONT
1 stop6h 30m
Delta
Tue 5/2610:00 pm
ONT
- TYS
1 stop8h 34m
Delta
Deal found 4/16![Delta logo]()
$428
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/53:40 pm
TYS
- ONT
1 stop9h 18m
United Airlines
Wed 5/66:00 am
ONT
- TYS
1 stop9h 11m
United Airlines
Deal found 4/13![United Airlines logo]()
$459
This American Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:33 pm
TYS
- ONT
1 stop8h 05m
American Airlines
Wed 5/2712:40 pm
ONT
- TYS
1 stop8h 16m
American Airlines
Deal found 4/18![American Airlines logo]()
$477
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 8/132:30 pm
TYS
- ONT
1 stop6h 31m
Delta
Sun 9/277:00 am
ONT
- TYS
1 stop8h 17m
Delta
Deal found 4/14![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/275:57 pm
TYS
- ONT
1 stop7h 49m
United Airlines
Tue 6/26:30 pm
ONT
- TYS
2 stops13h 12m
United Airlines
Deal found 4/16![United Airlines logo]()
$464
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 8/142:30 pm
TYS
- ONT
1 stop6h 31m
Delta
Fri 9/2510:59 pm
ONT
- TYS
1 stop7h 12m
Delta
Deal found 4/14![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/304:56 pm
TYS
- ONT
1 stop6h 46m
United Airlines
Wed 7/85:00 am
ONT
- TYS
1 stop7h 53m
United Airlines
Deal found 4/13![United Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 8/145:57 pm
TYS
- ONT
1 stop6h 59m
Delta
Sun 9/277:00 am
ONT
- TYS
1 stop8h 17m
Delta
Deal found 4/14![Delta logo]()
$457
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 8/174:00 pm
TYS
- ONT
1 stop8h 56m
Delta
Sun 9/277:00 am
ONT
- TYS
1 stop8h 17m
Delta
Deal found 4/14![Delta logo]()
$457
This United Airlines deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 8/134:56 pm
TYS
- ONT
1 stop6h 56m
United Airlines
Sat 8/155:00 am
ONT
- TYS
1 stop7h 54m
United Airlines
Deal found 4/16![United Airlines logo]()
$508
This United Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 7/108:48 am
TYS
- ONT
1 stop6h 59m
United Airlines
Fri 7/175:00 am
ONT
- TYS
1 stop7h 53m
United Airlines
Deal found 4/14![United Airlines logo]()
$534
Last-minute flights from Knoxville to OntarioDiscover last-minute flight deals from Knoxville to Ontario. Data last updated April 18, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Ontario. Data last updated April 18, 2026 and is based on user searches.
This Orbitz deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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.
Thu 4/164:28 pm
TYS
- ONT
1 stop10h 27m
Frontier
Wed 4/2212:59 am
ONT
- TYS
1 stop11h 34m
Frontier
Deal found 4/15![Frontier logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 4/309:25 pm
TYS
- ONT
2 stops22h 13m
Multiple Airlines
Sat 5/212:59 am
ONT
- TYS
1 stop11h 34m
Multiple Airlines
Deal found 4/15![Multiple Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/95:40 am
TYS
- ONT
1 stop8h 17m
Delta
Sat 5/1612:07 pm
ONT
- TYS
1 stop8h 49m
Delta
Deal found 4/15![Delta logo]()
$366
This CheapOair deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 5/118:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Mon 5/186:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 4/13![Frontier logo]()
$216
This United Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/125:55 pm
TYS
- ONT
1 stop7h 40m
United Airlines
Tue 5/196:59 pm
ONT
- TYS
2 stops12h 07m
United Airlines
Deal found 4/15![United Airlines logo]()
$364
This CheapOair deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” 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 5/158:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Fri 5/226:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 4/15![Frontier logo]()
$346
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/207:27 am
TYS
- ONT
1 stop6h 30m
Delta
Tue 5/2610:00 pm
ONT
- TYS
1 stop8h 34m
Delta
Deal found 4/16![Delta logo]()
$428
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/228:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Mon 5/256:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 4/14![Frontier logo]()
$335
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” 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 5/273:30 pm
TYS
- ONT
1 stop9h 18m
Delta
Tue 6/210:00 pm
ONT
- TYS
1 stop8h 34m
Delta
Deal found 4/16![Delta logo]()
$359
This American Airlines deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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 5/275:33 pm
TYS
- ONT
1 stop9h 26m
American Airlines
Tue 6/26:10 am
ONT
- TYS
2 stops12h 47m
American Airlines
Deal found 4/13![American Airlines logo]()
$401
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/298:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Wed 6/36:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 4/14![Frontier logo]()
$270
One-way flights from Knoxville to OntarioSearch for one-way flight options from Knoxville to Ontario. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
Search for one-way flight options from Knoxville to Ontario. Find affordable one-way fares based on user searches. Data last updated April 18, 2026.
This Frontier deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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.
Thu 4/304:28 pm
TYS
- ONT
1 stop10h 27m
Frontier
Deal found 4/14![Frontier logo]()
$106
This CheapOair deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 6/58:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 4/14![Frontier logo]()
$117
This Trip.com deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/234:28 pm
TYS
- ONT
1 stop18h 03m
Frontier
Deal found 4/15![Frontier logo]()
$136
This Frontier deal was found by Cheapflights users on 4/13. Clicking the “Pick Dates” 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.
Mon 5/258:19 pm
TYS
- ONT
1 stop6h 30m
Frontier
Deal found 4/13![Frontier logo]()
$145
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 8/318:00 am
TYS
- ONT
3 stops38h 48m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$163
This Delta deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/67:29 am
TYS
- ONT
1 stop7h 07m
Delta
Deal found 4/14![Delta logo]()
$180
This Kiwi.com deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” 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 7/36:30 am
TYS
- ONT
2 stops16h 21m
Multiple Airlines
Deal found 4/17![Multiple Airlines logo]()
$183
This American Airlines deal was found by Cheapflights users on 4/14. Clicking the “Pick Dates” 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 5/65:00 am
TYS
- ONT
2 stops11h 18m
American Airlines
Deal found 4/14![American Airlines logo]()
$185
Find flight deals from Knoxville to Ontario
Discover tips and strategies to find the most affordable flight options for your journey from Knoxville (TYS) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated April 18, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $216 (CheapOair) |
One-way from | $106 (Frontier) |
Popular in | December |
Cheapest in | June |
Average price | $478 |
Cheapflights Fare Finder
Customize your flight search to find flights from Knoxville to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
Use the filters below to find and compare flights from Knoxville to Ontario that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Wed 5/20
7:27 am-10:57 am
1 stop6h 30m
Ontario
Tue 5/26
10:00 pm-9:34 am
1 stop8h 34m
$428
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Thu 8/13
2:30 pm-6:01 pm
1 stop6h 31m
Ontario
Sun 9/27
7:00 am-6:17 pm
1 stop8h 17m
$457
Quickest round-trip
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Fri 8/14
2:30 pm-6:01 pm
1 stop6h 31m
Ontario
Fri 9/25
10:59 pm-9:11 am
1 stop7h 12m
$457
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Fri 8/14
5:57 pm-9:56 pm
1 stop6h 59m
Ontario
Sun 9/27
7:00 am-6:17 pm
1 stop8h 17m
$457
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Mon 8/17
4:00 pm-9:56 pm
1 stop8h 56m
Ontario
Sun 9/27
7:00 am-6:17 pm
1 stop8h 17m
$457
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Tue 5/5
3:40 pm-9:58 pm
1 stop9h 18m
Ontario
Wed 5/6
6:00 am-6:11 pm
1 stop9h 11m
$459
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Wed 5/27
5:57 pm-10:46 pm
1 stop7h 49m
Ontario
Tue 6/2
6:30 pm-10:42 am
2 stops13h 12m
$464
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Tue 5/26
5:33 pm-10:38 pm
1 stop8h 05m
Ontario
Wed 5/27
12:40 pm-11:56 pm
1 stop8h 16m
$477
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Tue 6/30
4:56 pm-8:42 pm
1 stop6h 46m
Ontario
Wed 7/8
5:00 am-3:53 pm
1 stop7h 53m
$499
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Thu 8/13
4:56 pm-8:52 pm
1 stop6h 56m
Ontario
Sat 8/15
5:00 am-3:54 pm
1 stop7h 54m
$508
Showing 1-10 of 22 resultsSorted by cheapest first
Compare providers for flights from Knoxville to Ontario
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Knoxville to Ontario in April.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Knoxville-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Knoxville-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Knoxville-Ontario flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Knoxville-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Knoxville-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Knoxville to Ontario
Have a flexible travel schedule? Discover the best time to fly to Ontario from Knoxville with our price prediction graph.
TYS-ONT
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 Ontario
What is the cheapest month to book a flight from Knoxville to Ontario?
Currently, June is the cheapest month in which you can book a flight from Knoxville to Ontario (average of $331). Flying from Knoxville to Ontario in December is currently the most expensive (average of $556). 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.
How much does it cost to fly round-trip from Knoxville to Ontario?
Reviews of airlines servicing Ontario
Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated April 18, 2026.
Get a feel of what it's like to fly with Delta,United Airlines, andAmerican Airlines from Knoxville to Ontario by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
7.9
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Comfort
7.9
Boarding
8.1
Overall
7.9
Food
7.2
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Related info for your journey
Find useful and relevant information for your journey from Knoxville to Ontario. 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 Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Knoxville to Ontario by cabin class
Find flights from Knoxville to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 18, 2026.
Knoxville and Ontario flights
Browse other Knoxville and Ontario flight options. Last updated on April 18, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on April 18, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Knoxville to Ontario
Discover the top 4 airlines that operate flights from Knoxville to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 18, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$349 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$219 | Average$456 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$288 | Average$438 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$313 | Average$424 | FlexibilityNo cancel fee | On-time71% |