$181+ 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 12/7. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — ONT
Sep 20 — Sep 271
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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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Best
Last-minute
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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 August 21, 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 August 21, 2026.
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/235:40 am -
1 stop8h 29m
Mon 9/2810:00 pm -
1 stop8h 29m
Deal found 8/19![Delta logo]()
$363
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/95:40 am -
1 stop8h 25m
Fri 9/1112:17 pm -
1 stop7h 10m
Deal found 8/19![Delta logo]()
$364
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/56:00 am -
1 stop7h 42m
Fri 9/1112:17 pm -
1 stop7h 10m
Deal found 8/19![Delta logo]()
$365
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:42 am -
2 stops12h 49m
Tue 10/275:00 am -
1 stop7h 00m
Deal found 8/21![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 10/204:20 pm -
2 stops8h 40m
Tue 10/279:15 am -
2 stops8h 45m
Deal found 8/21![Southwest logo]()
$373
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Thu 9/107:00 am -
1 stop19h 47m
Sun 9/1311:45 am -
2 stops29h 54m
Deal found 8/17![Multiple Airlines logo]()
$381
This Kiwi.com deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 10/86:30 am -
1 stop20h 20m
Mon 10/126:47 pm -
2 stops20h 27m
Deal found 8/19![Multiple Airlines logo]()
$391
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:00 am -
1 stop6h 50m
Tue 9/86:00 am -
1 stop9h 15m
Deal found 8/18![United Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 11/197:05 am -
2 stops8h 05m
Thu 11/269:35 am -
1 stop5h 40m
Deal found 8/19![Southwest logo]()
$401
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:10 am -
2 stops10h 00m
Thu 11/265:50 am -
2 stops9h 25m
Deal found 8/20![Southwest logo]()
$406
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
1 stop6h 29m
Mon 9/287:20 am -
1 stop6h 22m
Deal found 8/17![American Airlines logo]()
$415
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/156:00 am -
2 stops11h 01m
Mon 9/281:24 pm -
1 stop5h 50m
Deal found 8/19![United Airlines logo]()
$426
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 August 21, 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 August 21, 2026.
This Delta deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 9/235:40 am -
1 stop8h 29m
Mon 9/2810:00 pm -
1 stop8h 29m
Deal found 8/21![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/711:59 am -
2 stops11h 52m
Thu 11/265:00 am -
1 stop8h 03m
Deal found 8/20![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/77:10 am -
2 stops10h 00m
Thu 11/265:50 am -
2 stops9h 25m
Deal found 8/20![Southwest logo]()
$406
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/95:40 am -
1 stop8h 25m
Fri 9/1112:17 pm -
1 stop7h 10m
Deal found 8/19![Delta logo]()
$364
This United Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/2010:42 am -
2 stops12h 49m
Tue 10/275:00 am -
1 stop7h 00m
Deal found 8/21![United Airlines logo]()
$368
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:00 am -
1 stop6h 50m
Tue 9/86:00 am -
1 stop9h 15m
Deal found 8/18![United Airlines logo]()
$394
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/107:10 am -
2 stops9h 50m
Sun 9/138:30 pm -
2 stops13h 55m
Deal found 8/17![Southwest logo]()
$493
This KAYAK deal was found by Cheapflights users on 8/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:30 am -
1 stop6h 12m
Sat 9/512:00 pm -
1 stop7h 39m
Deal found 8/20![Delta logo]()
$496
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/263:45 pm -
1 stop9h 14m
Sat 10/31:22 pm -
1 stop5h 52m
Deal found 8/19![United Airlines logo]()
$463
This Delta deal was found by Cheapflights users on 8/18. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/212:23 pm -
1 stop8h 52m
Fri 10/912:16 pm -
1 stop8h 43m
Deal found 8/18![Delta logo]()
$504
This United Airlines deal was found by Cheapflights users on 8/16. 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.
Tue 9/11:00 pm -
2 stops10h 53m
Sun 9/67:00 am -
1 stop6h 58m
Deal found 8/16![United Airlines logo]()
$469
Last-minute flights from Knoxville to OntarioDiscover last-minute flight deals from Knoxville to Ontario. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Ontario. Data last updated August 21, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/16:00 am -
1 stop7h 42m
Sun 9/67:05 am -
1 stop9h 06m
Deal found 8/19![Delta logo]()
$458
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/56:00 am -
1 stop7h 42m
Fri 9/1112:17 pm -
1 stop7h 10m
Deal found 8/19![Delta logo]()
$365
This United Airlines deal was found by Cheapflights users on 8/18. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/59:00 am -
1 stop6h 50m
Tue 9/86:00 am -
1 stop9h 15m
Deal found 8/18![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/95:40 am -
1 stop8h 25m
Fri 9/1112:17 pm -
1 stop7h 10m
Deal found 8/19![Delta logo]()
$364
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Thu 9/107:00 am -
1 stop19h 47m
Sun 9/1311:45 am -
2 stops29h 54m
Deal found 8/17![Multiple Airlines logo]()
$381
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:00 am -
1 stop8h 47m
Sun 9/1312:37 pm -
1 stop7h 45m
Deal found 8/17![American Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/156:00 am -
2 stops11h 01m
Mon 9/281:24 pm -
1 stop5h 50m
Deal found 8/19![United Airlines logo]()
$426
This Kiwi.com deal was found by Cheapflights users on 8/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/177:00 am -
1 stop30h 30m
Thu 9/248:24 pm -
2 stops13h 17m
Deal found 8/18![Multiple Airlines logo]()
$428
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/235:40 am -
1 stop8h 29m
Mon 9/2810:00 pm -
1 stop8h 29m
Deal found 8/19![Delta logo]()
$363
This American Airlines deal was found by Cheapflights users on 8/17. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
1 stop6h 29m
Mon 9/287:20 am -
1 stop6h 22m
Deal found 8/17![American Airlines logo]()
$415
This American Airlines deal was found by Cheapflights users on 8/21. Clicking the “Pick Dates” 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 -
1 stop6h 29m
Wed 9/307:20 am -
1 stop6h 22m
Deal found 8/21![American Airlines logo]()
$459
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 August 21, 2026.
Search for one-way flight options from Knoxville to Ontario. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 12/79:15 pm -
1 stop12h 00m
Deal found 8/17![Multiple Airlines logo]()
$181
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/294:40 pm -
1 stop6h 44m
Deal found 8/19![Delta logo]()
$182
This Kiwi.com deal was found by Cheapflights users on 8/17. 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.
Sun 8/307:00 am -
1 stop19h 50m
Deal found 8/17![Multiple Airlines logo]()
$183
This Southwest deal was found by Cheapflights users on 8/17. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/57:10 am -
2 stops10h 00m
Deal found 8/17![Southwest logo]()
$187
This Kiwi.com deal was found by Cheapflights users on 8/17. 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 -
2 stops18h 50m
Deal found 8/17![Multiple Airlines logo]()
$230
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/24:50 pm -
1 stop7h 04m
Deal found 8/17![United Airlines logo]()
$232
This Delta deal was found by Cheapflights users on 8/19. Clicking the “Pick Dates” 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 9/146:13 pm -
1 stop7h 11m
Deal found 8/19![Delta logo]()
$264
This United Airlines deal was found by Cheapflights users on 8/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:53 pm -
1 stop7h 05m
Deal found 8/17![United Airlines logo]()
$265
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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $363 (Delta) |
One-way from | $181 (Kiwi.com) |
Popular in | August |
Cheapest in | October |
Average price | $586 |
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 7,457,451 searches. Data last updated August 21, 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 Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Wed 9/23
5:40 am-11:09 am
1 stop8h 29m
Ontario
Mon 9/28
10:00 pm-9:29 am
1 stop8h 29m
$363
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Wed 9/9
5:40 am-11:05 am
1 stop8h 25m
Ontario
Fri 9/11
12:17 pm-10:27 pm
1 stop7h 10m
$364
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 11/7
11:59 am-8:51 pm
2 stops11h 52m
Ontario
Thu 11/26
5:00 am-4:03 pm
1 stop8h 03m
$368
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Tue 10/20
10:42 am-8:31 pm
2 stops12h 49m
Ontario
Tue 10/27
5:00 am-3:00 pm
1 stop7h 00m
$368
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 9/5
9:00 am-12:50 pm
1 stop6h 50m
Ontario
Tue 9/8
6:00 am-6:15 pm
1 stop9h 15m
$394
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 11/7
7:10 am-2:10 pm
2 stops10h 00m
Ontario
Thu 11/26
5:50 am-6:15 pm
2 stops9h 25m
$406
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 9/26
3:45 pm-9:59 pm
1 stop9h 14m
Ontario
Sat 10/3
1:22 pm-10:14 pm
1 stop5h 52m
$463
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Tue 9/1
1:00 pm-8:53 pm
2 stops10h 53m
Ontario
Sun 9/6
7:00 am-4:58 pm
1 stop6h 58m
$469
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Thu 9/10
7:10 am-2:00 pm
2 stops9h 50m
Ontario
Sun 9/13
8:30 pm-1:25 pm
2 stops13h 55m
$493
Quickest round-trip
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Wed 9/2
7:30 am-10:42 am
1 stop6h 12m
Ontario
Sat 9/5
12:00 pm-10:39 pm
1 stop7h 39m
$496
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 August.
| 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 August is currently the most expensive (average of $586). 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?
Airfare is below average for this route at the moment.
Knoxville to Ontario flights typically cost between $438 and $646 in September.The cheapest round-trip price found within the last 5 days was $363 on Delta (Sep 23-Sep 28).
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 August 21, 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.
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Comfort
7.8
Overall
7.8
Food
7.2
Entertainment
7.8
Boarding
8.1
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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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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$151 | Average$355 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$277 | Average$477 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$336 | Average$540 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$339 | Average$498 | FlexibilityNo cancel fee | On-time71% |