$161+ Cheap flights from Ontario to Knoxville (ONT - 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — TYS
Jul 1 — Jul 81
Round-trip
1 adult, Economy
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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 Ontario to KnoxvilleExplore the most affordable flight options available from Ontario to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.
Explore the most affordable flight options available from Ontario to Knoxville. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 1, 2026.
This Kiwi.com deal was found by Cheapflights users on 6/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
ONT
- TYS
1 stop29h 01m
Multiple Airlines
Mon 8/172:47 pm
TYS
- ONT
1 stop27h 22m
Multiple Airlines
Deal found 6/1![Multiple Airlines logo]()
$265
This American Airlines deal was found by Cheapflights users on 5/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/910:10 pm
ONT
- TYS
1 stop7h 20m
American Airlines
Wed 9/165:35 pm
TYS
- ONT
1 stop8h 02m
American Airlines
Deal found 5/30![American Airlines logo]()
$277
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/181:18 pm
ONT
- TYS
1 stop6h 11m
United Airlines
Tue 8/259:00 am
TYS
- ONT
2 stops12h 11m
United Airlines
Deal found 5/31![United Airlines logo]()
$282
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
Wed 9/306:00 am
ONT
- TYS
1 stop28h 11m
Multiple Airlines
Mon 10/59:44 pm
TYS
- ONT
1 stop26h 10m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$299
This Expedia deal was found by Cheapflights users on 5/30. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Wed 7/158:19 pm
TYS
- ONT
1 stop16h 45m
Frontier
Deal found 5/30![Frontier logo]()
$310
This United Airlines deal was found by Cheapflights users on 6/1. 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 8/121:18 pm
ONT
- TYS
1 stop6h 11m
United Airlines
Tue 8/186:02 pm
TYS
- ONT
1 stop7h 33m
United Airlines
Deal found 6/1![United Airlines logo]()
$311
This Gotogate deal was found by Cheapflights users on 5/27. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Wed 8/198:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/27![Frontier logo]()
$320
This Frontier deal was found by Cheapflights users on 5/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/126:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Mon 8/178:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Deal found 5/27![Frontier logo]()
$324
This American Airlines deal was found by Cheapflights users on 5/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/811:20 pm
ONT
- TYS
1 stop7h 24m
American Airlines
Wed 9/166:00 am
TYS
- ONT
1 stop6h 29m
American Airlines
Deal found 5/30![American Airlines logo]()
$326
This Frontier deal was found by Cheapflights users on 5/28. 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.
Mon 7/276:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Wed 8/58:19 pm
TYS
- ONT
1 stop6h 31m
Frontier
Deal found 5/28![Frontier logo]()
$329
Best flights from Ontario to KnoxvilleDiscover carefully curated flight deals from Ontario to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 1, 2026.
Discover carefully curated flight deals from Ontario to Knoxville that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated June 1, 2026.
This Delta deal was found by Cheapflights users on 6/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1912:00 pm
ONT
- TYS
1 stop8h 52m
Delta
Wed 8/265:45 am
TYS
- ONT
1 stop7h 57m
Delta
Deal found 6/1![Delta logo]()
$277
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/181:18 pm
ONT
- TYS
1 stop6h 11m
United Airlines
Tue 8/259:00 am
TYS
- ONT
2 stops12h 11m
United Airlines
Deal found 5/31![United Airlines logo]()
$282
This Southwest deal was found by Cheapflights users on 5/31. 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 8/188:35 am
ONT
- TYS
2 stops7h 20m
Southwest
Tue 8/253:00 pm
TYS
- ONT
2 stops8h 55m
Southwest
Deal found 5/31![Southwest logo]()
$456
This Delta deal was found by Cheapflights users on 5/31. 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 9/3011:59 am
ONT
- TYS
1 stop8h 51m
Delta
Mon 10/512:00 pm
TYS
- ONT
1 stop9h 04m
Delta
Deal found 5/31![Delta logo]()
$348
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/255:00 am
ONT
- TYS
1 stop7h 54m
United Airlines
Tue 9/19:00 am
TYS
- ONT
2 stops12h 11m
United Airlines
Deal found 5/31![United Airlines logo]()
$382
This Southwest deal was found by Cheapflights users on 6/1. 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.
Wed 8/127:45 am
ONT
- TYS
2 stops8h 10m
Southwest
Tue 8/181:55 pm
TYS
- ONT
2 stops10h 00m
Southwest
Deal found 6/1![Southwest logo]()
$504
This United Airlines deal was found by Cheapflights users on 5/31. 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 8/106:00 am
ONT
- TYS
2 stops31h 58m
United Airlines
Wed 8/124:50 pm
TYS
- ONT
1 stop7h 03m
United Airlines
Deal found 5/31![United Airlines logo]()
$502
This Delta deal was found by Cheapflights users on 5/28. 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.
Sun 7/2610:00 pm
ONT
- TYS
1 stop8h 36m
Delta
Sat 8/86:00 am
TYS
- ONT
1 stop7h 42m
Delta
Deal found 5/28![Delta logo]()
$517
This Southwest deal was found by Cheapflights users on 5/28. 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.
Sat 10/106:45 am
ONT
- TYS
1 stop6h 55m
Southwest
Tue 10/137:00 am
TYS
- ONT
1 stop10h 30m
Southwest
Deal found 5/28![Southwest logo]()
$537
This Delta deal was found by Cheapflights users on 5/29. 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.
Fri 9/1811:59 am
ONT
- TYS
1 stop8h 51m
Delta
Sun 9/205:45 am
TYS
- ONT
1 stop8h 02m
Delta
Deal found 5/29![Delta logo]()
$517
Last-minute flights from Ontario to KnoxvilleDiscover last-minute flight deals from Ontario to Knoxville. Data last updated June 1, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Knoxville. Data last updated June 1, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 5/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/16:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Mon 6/88:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/31![Frontier logo]()
$480
This Trip.com deal was found by Cheapflights users on 5/28. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/106:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Wed 6/178:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/28![Frontier logo]()
$372
This Booking.com deal was found by Cheapflights users on 5/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/126:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Mon 6/158:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/28![Frontier logo]()
$434
This Gotogate deal was found by Cheapflights users on 5/28. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/176:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Mon 6/228:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/28![Frontier logo]()
$358
This American Airlines deal was found by Cheapflights users on 5/27. 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.
Tue 6/235:45 am
ONT
- TYS
1 stop7h 58m
American Airlines
Sat 6/275:37 am
TYS
- ONT
1 stop6h 54m
American Airlines
Deal found 5/27![American Airlines logo]()
$514
This American Airlines deal was found by Cheapflights users on 5/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2512:41 pm
ONT
- TYS
1 stop8h 14m
American Airlines
Wed 7/15:33 pm
TYS
- ONT
1 stop9h 26m
American Airlines
Deal found 5/30![American Airlines logo]()
$525
This Gotogate deal was found by Cheapflights users on 5/31. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Fri 7/38:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/31![Frontier logo]()
$429
This American Airlines deal was found by Cheapflights users on 5/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/2611:59 pm
ONT
- TYS
1 stop8h 14m
American Airlines
Fri 7/35:31 pm
TYS
- ONT
1 stop8h 01m
American Airlines
Deal found 5/31![American Airlines logo]()
$487
This CheapOair deal was found by Cheapflights users on 5/30. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Mon 6/298:32 pm
TYS
- ONT
1 stop16h 33m
Frontier
Deal found 5/30![Frontier logo]()
$499
This American Airlines deal was found by Cheapflights users on 5/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/272:18 pm
ONT
- TYS
1 stop6h 37m
American Airlines
Sat 7/45:37 am
TYS
- ONT
1 stop6h 52m
American Airlines
Deal found 5/30![American Airlines logo]()
$537
One-way flights from Ontario to KnoxvilleSearch for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
Search for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated June 1, 2026.
This Frontier deal was found by Cheapflights users on 5/30. 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 7/86:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 5/30![Frontier logo]()
$161
This Frontier deal was found by Cheapflights users on 5/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/216:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/27![Frontier logo]()
$181
This Kiwi.com deal was found by Cheapflights users on 5/27. 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 8/226:00 am
ONT
- TYS
1 stop28h 49m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$195
This Frontier deal was found by Cheapflights users on 5/30. 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 7/296:00 am
ONT
- TYS
1 stop10h 24m
Frontier
Deal found 5/30![Frontier logo]()
$201
This United Airlines deal was found by Cheapflights users on 5/27. 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 8/225:00 am
ONT
- TYS
2 stops8h 58m
United Airlines
Deal found 5/27![United Airlines logo]()
$205
This Delta deal was found by Cheapflights users on 5/29. 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.
Mon 7/2710:00 pm
ONT
- TYS
1 stop8h 36m
Delta
Deal found 5/29![Delta logo]()
$229
This Frontier deal was found by Cheapflights users on 5/31. 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 6/226:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/31![Frontier logo]()
$230
This Frontier deal was found by Cheapflights users on 5/30. 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.
Mon 6/86:00 am
ONT
- TYS
1 stop10h 33m
Frontier
Deal found 5/30![Frontier logo]()
$231
This Kiwi.com deal was found by Cheapflights users on 5/27. 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.
Fri 8/213:34 pm
ONT
- TYS
2 stops43h 15m
Multiple Airlines
Deal found 5/27![Multiple Airlines logo]()
$233
This Frontier deal was found by Cheapflights users on 5/31. 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 7/16:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/31![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 5/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/266:00 am
ONT
- TYS
1 stop10h 37m
Frontier
Deal found 5/27![Frontier logo]()
$251
Find flight deals from Ontario to Knoxville
Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Knoxville (TYS). 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 June 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $265 (Kiwi.com) |
One-way from | $161 (Frontier) |
Popular in | March |
Cheapest in | September |
Average price | $484 |
Cheapflights Fare Finder
Customize your flight search to find flights from Ontario 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 2,558,603 searches. Data last updated June 1, 2026.
Use the filters below to find and compare flights from Ontario to Knoxville that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Wed 8/19
12:00 pm-11:52 pm
1 stop8h 52m
Knoxville McGhee Tyson
Wed 8/26
5:45 am-10:42 am
1 stop7h 57m
$277
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Tue 8/18
1:18 pm-10:29 pm
1 stop6h 11m
Knoxville McGhee Tyson
Tue 8/25
9:00 am-6:11 pm
2 stops12h 11m
$282
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Wed 9/30
11:59 am-11:50 pm
1 stop8h 51m
Knoxville McGhee Tyson
Mon 10/5
12:00 pm-6:04 pm
1 stop9h 04m
$348
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Tue 8/25
5:00 am-3:54 pm
1 stop7h 54m
Knoxville McGhee Tyson
Tue 9/1
9:00 am-6:11 pm
2 stops12h 11m
$382
Quickest round-trip
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Tue 8/18
8:35 am-6:55 pm
2 stops7h 20m
Knoxville McGhee Tyson
Tue 8/25
3:00 pm-8:55 pm
2 stops8h 55m
$456
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Mon 8/10
6:00 am-4:58 pm
2 stops31h 58m
Knoxville McGhee Tyson
Wed 8/12
4:50 pm-8:53 pm
1 stop7h 03m
$502
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Wed 8/12
7:45 am-6:55 pm
2 stops8h 10m
Knoxville McGhee Tyson
Tue 8/18
1:55 pm-8:55 pm
2 stops10h 00m
$504
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sun 7/26
10:00 pm-9:36 am
1 stop8h 36m
Knoxville McGhee Tyson
Sat 8/8
6:00 am-10:42 am
1 stop7h 42m
$517
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Fri 9/18
11:59 am-11:50 pm
1 stop8h 51m
Knoxville McGhee Tyson
Sun 9/20
5:45 am-10:47 am
1 stop8h 02m
$517
OntarioKnoxville
ONT - TYS
ONTTYS
Ontario
Sat 10/10
6:45 am-4:40 pm
1 stop6h 55m
Knoxville McGhee Tyson
Tue 10/13
7:00 am-2:30 pm
1 stop10h 30m
$537
Showing 1-10 of 16 resultsSorted by cheapest first
Compare providers for flights from Ontario to Knoxville
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 Ontario to Knoxville in June.
| 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 Ontario-Knoxville flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Knoxville flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ontario-Knoxville flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Ontario-Knoxville 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 Ontario-Knoxville 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 Ontario to Knoxville
Have a flexible travel schedule? Discover the best time to fly to Knoxville from Ontario with our price prediction graph.
ONT-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 Ontario to Knoxville
How far ahead should I book a flight from Ontario to Knoxville?
To ensure you get the cheapest price possible for a flight from Ontario to Knoxville, you should look to book at least 63 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Ontario to Knoxville?
Currently, September is the cheapest month in which you can book a flight from Ontario to Knoxville (average of $367). Flying from Ontario to Knoxville in March is currently the most expensive (average of $564). 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 Ontario to Knoxville?
Reviews of airlines servicing Knoxville
Get insights into the airlines that provide service to Knoxville. 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 Knoxville. Reviews last updated June 1, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andAmerican Airlines from Ontario to Knoxville. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Boarding
8.1
Comfort
7.8
Entertainment
7.8
Crew
8.5
Overall
7.9
Food
7.2
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Related info for your journey
Find useful and relevant information for your journey from Ontario 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
Oak Ridge
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Find flights from Ontario to Knoxville, based on your preferred cabin class, be it economy, premium economy, business, or first class.
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 June 1, 2026.
Ontario and Knoxville flights
Browse other Ontario and Knoxville flight options. Last updated on June 1, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on June 1, 2026.
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Check out other popular destinations found by fellow travelers in 2026
Top 3 airlines flying from Ontario to Knoxville
Discover the top 3 airlines that operate flights from Ontario 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 2,558,603 searches. Data last updated June 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$473 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$313 | Average$433 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$506 | FlexibilityNo cancel fee | On-time69% |