$137+ 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 8/24. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — ONT
Aug 1 — Aug 81
Round-trip
1 adult, Economy
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Find cheap flights from Knoxville to Ontario 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 Knoxville to Ontario
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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 July 2, 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 July 2, 2026.
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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.
Wed 7/298:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Wed 8/56:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 7/1![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 8/106:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/30![Frontier logo]()
$289
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Wed 8/126:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/29![Frontier logo]()
$291
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 8/106:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/29![Frontier logo]()
$298
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 8/36:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/30![Frontier logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:54 pm
TYS
- ONT
1 stop16h 38m
Multiple Airlines
Mon 8/249:33 am
ONT
- TYS
2 stops50h 26m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$310
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:30 am
TYS
- ONT
2 stops44h 20m
Multiple Airlines
Mon 8/176:00 am
ONT
- TYS
1 stop10h 24m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$328
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Fri 7/246:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/28![Frontier logo]()
$330
This CheapOair deal was found by Cheapflights users on 6/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:19 pm
TYS
- ONT
1 stop16h 45m
Frontier
Mon 8/36:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/27![Frontier logo]()
$334
This American Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am
TYS
- ONT
1 stop8h 47m
American Airlines
Mon 9/2812:37 pm
ONT
- TYS
1 stop7h 45m
American Airlines
Deal found 6/28![American Airlines logo]()
$345
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 7/248:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 7/276:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 7/1![Frontier logo]()
$349
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 July 2, 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 July 2, 2026.
This Expedia deal was found by Cheapflights users on 6/27. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/158:19 pm
TYS
- ONT
1 stop16h 45m
Frontier
Fri 7/246:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/27![Frontier logo]()
$350
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/174:50 pm
TYS
- ONT
1 stop8h 20m
Southwest
Tue 9/227:25 am
ONT
- TYS
1 stop8h 30m
Southwest
Deal found 7/1![Southwest logo]()
$367
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/176:02 pm
TYS
- ONT
1 stop7h 57m
United Airlines
Tue 9/226:00 am
ONT
- TYS
1 stop9h 15m
United Airlines
Deal found 7/1![United Airlines logo]()
$367
This Delta deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:45 am
TYS
- ONT
2 stops13h 55m
Delta
Mon 9/2810:00 pm
ONT
- TYS
1 stop8h 29m
Delta
Deal found 6/29![Delta logo]()
$488
This Southwest deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/104:50 pm
TYS
- ONT
2 stops7h 55m
Southwest
Mon 8/175:15 am
ONT
- TYS
2 stops7h 40m
Southwest
Deal found 6/29![Southwest logo]()
$428
This United Airlines deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:00 am
TYS
- ONT
2 stops12h 16m
United Airlines
Wed 9/97:00 am
ONT
- TYS
1 stop6h 58m
United Airlines
Deal found 6/29![United Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Thu 8/274:50 pm
TYS
- ONT
1 stop7h 03m
United Airlines
Sun 8/301:18 pm
ONT
- TYS
1 stop6h 11m
United Airlines
Deal found 6/27![United Airlines logo]()
$501
This Southwest deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 7/215:40 pm
TYS
- ONT
2 stops8h 25m
Southwest
Tue 7/289:45 am
ONT
- TYS
2 stops7h 40m
Southwest
Deal found 7/1![Southwest logo]()
$551
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/314:50 pm
TYS
- ONT
1 stop7h 03m
United Airlines
Sun 9/65:00 am
ONT
- TYS
2 stops12h 53m
United Airlines
Deal found 6/28![United Airlines logo]()
$506
This Southwest deal was found by Cheapflights users on 6/27. 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 7/152:45 pm
TYS
- ONT
2 stops10h 35m
Southwest
Fri 7/248:00 am
ONT
- TYS
2 stops10h 15m
Southwest
Deal found 6/27![Southwest logo]()
$558
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/236:00 am
TYS
- ONT
2 stops15h 16m
United Airlines
Tue 9/295:00 am
ONT
- TYS
1 stop7h 52m
United Airlines
Deal found 7/1![United Airlines logo]()
$510
This United Airlines deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2310:45 am
TYS
- ONT
2 stops12h 16m
United Airlines
Mon 9/286:32 pm
ONT
- TYS
2 stops12h 13m
United Airlines
Deal found 6/28![United Airlines logo]()
$566
Last-minute flights from Knoxville to OntarioDiscover last-minute flight deals from Knoxville to Ontario. Data last updated July 2, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Ontario. Data last updated July 2, 2026 and is based on user searches.
This CheapOair deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/88:19 pm
TYS
- ONT
1 stop16h 45m
Frontier
Wed 7/226:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/29![Frontier logo]()
$345
This Frontier deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/228:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Fri 7/246:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/28![Frontier logo]()
$330
This CheapOair deal was found by Cheapflights users on 6/27. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/248:19 pm
TYS
- ONT
1 stop16h 45m
Frontier
Mon 8/36:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/27![Frontier logo]()
$334
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 7/248:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 7/276:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 7/1![Frontier logo]()
$349
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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.
Wed 7/298:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Wed 8/56:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 7/1![Frontier logo]()
$278
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/298:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 8/36:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/30![Frontier logo]()
$304
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Wed 8/126:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/29![Frontier logo]()
$291
This Frontier deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/38:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 8/106:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/29![Frontier logo]()
$298
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/58:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Mon 8/106:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 6/30![Frontier logo]()
$289
This Kiwi.com deal was found by Cheapflights users on 6/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/106:30 am
TYS
- ONT
2 stops44h 20m
Multiple Airlines
Mon 8/176:00 am
ONT
- TYS
1 stop10h 24m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$328
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/145:54 pm
TYS
- ONT
1 stop16h 38m
Multiple Airlines
Mon 8/249:33 am
ONT
- TYS
2 stops50h 26m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$310
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 July 2, 2026.
Search for one-way flight options from Knoxville to Ontario. Find affordable one-way fares based on user searches. Data last updated July 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/248:30 am
TYS
- ONT
2 stops42h 20m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$137
This Frontier deal was found by Cheapflights users on 6/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/318:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Deal found 6/30![Frontier logo]()
$149
This Delta deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:38 pm
TYS
- ONT
1 stop8h 14m
Delta
Deal found 6/28![Delta logo]()
$173
This Frontier deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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.
Wed 7/158:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Deal found 7/1![Frontier logo]()
$175
This Southwest deal was found by Cheapflights users on 6/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/274:50 pm
TYS
- ONT
2 stops8h 15m
Southwest
Deal found 6/28![Southwest logo]()
$178
This CheapOair deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 7/108:19 pm
TYS
- ONT
1 stop16h 45m
Frontier
Deal found 7/1![Frontier logo]()
$206
This deal was found by Cheapflights users on 6/27. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/264:50 pm
TYS
- ONT
1 stop7h 03m
United Airlines
Deal found 6/27![United Airlines logo]()
$223
This United Airlines deal was found by Cheapflights users on 7/1. Clicking the “Pick Dates” 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 9/159:00 am
TYS
- ONT
2 stops14h 01m
United Airlines
Deal found 7/1![United Airlines logo]()
$233
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 July 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $278 (Frontier) |
One-way from | $137 (Kiwi.com) |
Popular in | December |
Cheapest in | September |
Average price | $464 |
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 July 2, 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 7/15
8:19 pm-10:04 am
1 stop16h 45m
Ontario
Fri 7/24
6:00 am-7:24 pm
1 stop10h 24m
$350
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Thu 9/17
4:50 pm-10:10 pm
1 stop8h 20m
Ontario
Tue 9/22
7:25 am-6:55 pm
1 stop8h 30m
$367
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Thu 9/17
6:02 pm-10:59 pm
1 stop7h 57m
Ontario
Tue 9/22
6:00 am-6:15 pm
1 stop9h 15m
$367
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Mon 8/10
4:50 pm-9:45 pm
2 stops7h 55m
Ontario
Mon 8/17
5:15 am-3:55 pm
2 stops7h 40m
$428
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Wed 9/2
9:00 am-6:16 pm
2 stops12h 16m
Ontario
Wed 9/9
7:00 am-4:58 pm
1 stop6h 58m
$450
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Wed 9/23
11:45 am-10:40 pm
2 stops13h 55m
Ontario
Mon 9/28
10:00 pm-9:29 am
1 stop8h 29m
$488
Quickest round-trip
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Thu 8/27
4:50 pm-8:53 pm
1 stop7h 03m
Ontario
Sun 8/30
1:18 pm-10:29 pm
1 stop6h 11m
$501
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Mon 8/31
4:50 pm-8:53 pm
1 stop7h 03m
Ontario
Sun 9/6
5:00 am-8:53 pm
2 stops12h 53m
$506
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Wed 9/23
6:00 am-6:16 pm
2 stops15h 16m
Ontario
Tue 9/29
5:00 am-3:52 pm
1 stop7h 52m
$510
KnoxvilleOntario
TYS - ONT
TYSONT
Knoxville McGhee Tyson
Tue 7/21
5:40 pm-11:05 pm
2 stops8h 25m
Ontario
Tue 7/28
9:45 am-8:25 pm
2 stops7h 40m
$551
Showing 1-10 of 21 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 July.
| 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, September is the cheapest month in which you can book a flight from Knoxville to Ontario (average of $368). 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 July 2, 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.
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
Crew
8.5
Entertainment
7.8
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Boarding
8.1
Comfort
7.8
Food
7.2
Overall
7.8
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 July 2, 2026.
Knoxville and Ontario flights
Browse other Knoxville and Ontario flight options. Last updated on July 2, 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 July 2, 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 July 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$349 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$277 | Average$488 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$319 | Average$489 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$336 | Average$528 | FlexibilityNo cancel fee | On-time69% |