$127+ Cheap flights from Ontario to Knoxville (ONT - TYS)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/6. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — TYS
Nov 29 — Dec 61
Round-trip
1 adult, Economy
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Find cheap flights from Ontario to Knoxville with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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 Ontario to Knoxville
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Best
Last-minute
One-way
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 October 30, 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 October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/48:00 am -
1 stop9h 25m
Mon 12/78:00 am -
2 stops29h 45m
Deal found 10/28![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 12/32:00 pm -
1 stop27h 25m
Mon 12/78:00 am -
2 stops19h 20m
Deal found 10/28![Multiple Airlines logo]()
$264
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 12/32:00 pm -
1 stop27h 25m
Fri 12/118:00 am -
2 stops29h 45m
Deal found 10/28![Multiple Airlines logo]()
$294
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/48:00 am -
1 stop9h 25m
Fri 12/118:00 am -
2 stops29h 45m
Deal found 10/28![Multiple Airlines logo]()
$300
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 12/211:30 am -
2 stops47h 13m
Mon 12/79:15 pm -
1 stop17h 36m
Deal found 10/28![Multiple Airlines logo]()
$307
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 11/122:23 pm -
1 stop29h 12m
Mon 11/1610:09 pm -
1 stop21h 12m
Deal found 10/28![Multiple Airlines logo]()
$311
This Delta deal was found by Cheapflights users on 10/28. 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.
Sat 12/512:20 pm -
1 stop6h 57m
Tue 12/84:01 pm -
1 stop7h 57m
Deal found 10/28![Delta logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 12/48:00 am -
1 stop9h 25m
Tue 12/81:57 pm -
2 stops44h 47m
Deal found 10/28![Multiple Airlines logo]()
$337
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Thu 12/36:40 pm -
2 stops12h 34m
Tue 12/84:43 pm -
1 stop7h 28m
Deal found 10/28![United Airlines logo]()
$341
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 October 30, 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 October 30, 2026.
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:00 am -
2 stops8h 59m
Sat 11/213:45 pm -
1 stop8h 55m
Deal found 10/25![United Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 10/28. 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 1/95:40 am -
2 stops7h 10m
Fri 1/153:50 pm -
2 stops10h 40m
Deal found 10/28![Southwest logo]()
$403
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/1611:10 pm -
1 stop7h 45m
Mon 11/235:40 am -
1 stop8h 23m
Deal found 10/26![Delta logo]()
$506
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:55 am -
2 stops10h 55m
Sat 11/215:55 pm -
2 stops8h 50m
Deal found 10/25![Southwest logo]()
$403
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/85:00 am -
2 stops9h 00m
Mon 12/144:43 pm -
1 stop7h 28m
Deal found 10/29![United Airlines logo]()
$450
This United Airlines deal was found by Cheapflights users on 10/27. 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 12/55:00 am -
2 stops9h 00m
Sat 12/126:00 am -
2 stops9h 34m
Deal found 10/27![United Airlines logo]()
$456
This Southwest deal was found by Cheapflights users on 10/27. 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.
Tue 12/221:05 pm -
1 stop6h 35m
Tue 12/297:15 pm -
2 stops7h 40m
Deal found 10/27![Southwest logo]()
$506
This Delta deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2011:10 pm -
1 stop7h 18m
Thu 11/261:30 pm -
1 stop9h 19m
Deal found 10/26![Delta logo]()
$626
This United Airlines deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/115:00 am -
1 stop6h 41m
Sun 12/134:43 pm -
1 stop7h 28m
Deal found 10/25![United Airlines logo]()
$556
This Southwest deal was found by Cheapflights users on 10/28. 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 11/127:00 am -
2 stops8h 45m
Mon 11/162:40 pm -
2 stops9h 00m
Deal found 10/28![Southwest logo]()
$637
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Tue 12/85:00 am -
2 stops9h 00m
Sun 12/135:00 pm -
1 stop7h 59m
Deal found 10/29![United Airlines logo]()
$604
This Southwest deal was found by Cheapflights users on 10/28. 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.
Mon 12/216:20 am -
1 stop5h 45m
Sat 12/265:55 pm -
1 stop7h 30m
Deal found 10/28![Southwest logo]()
$697
Last-minute flights from Ontario to KnoxvilleDiscover last-minute flight deals from Ontario to Knoxville. Data last updated October 30, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Knoxville. Data last updated October 30, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Thu 11/122:23 pm -
1 stop29h 12m
Mon 11/1610:09 pm -
1 stop21h 12m
Deal found 10/28![Multiple Airlines logo]()
$311
This United Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/181:29 pm -
1 stop6h 03m
Sat 11/213:45 pm -
1 stop8h 55m
Deal found 10/27![United Airlines logo]()
$325
This American Airlines deal was found by Cheapflights users on 10/27. 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.
Wed 11/182:22 pm -
1 stop6h 10m
Sat 11/217:30 pm -
1 stop7h 29m
Deal found 10/27![American Airlines logo]()
$402
This Southwest deal was found by Cheapflights users on 10/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/185:55 am -
2 stops10h 55m
Sat 11/215:55 pm -
2 stops8h 50m
Deal found 10/25![Southwest logo]()
$403
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/198:35 pm -
1 stop13h 07m
Mon 11/237:11 pm -
2 stops19h 28m
Deal found 10/26![Multiple Airlines logo]()
$385
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Wed 11/258:15 am -
1 stop9h 50m
Wed 12/25:14 pm -
2 stops43h 23m
Deal found 10/28![Multiple Airlines logo]()
$352
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 October 30, 2026.
Search for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated October 30, 2026.
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 1/63:33 pm -
2 stops24h 09m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Multiple Airlines logo]()
$127
This Kiwi.com deal was found by Cheapflights users on 10/28. 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.
Tue 12/2910:48 pm -
3 stops44h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/28![Multiple Airlines logo]()
$167
This Kiwi.com deal was found by Cheapflights users on 10/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/3010:48 pm -
2 stops20h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/26![Multiple Airlines logo]()
$186
This Southwest deal was found by Cheapflights users on 10/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/316:50 am -
1 stop5h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/27![Southwest logo]()
$197
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 October 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $243 (Kiwi.com) |
One-way from | $127 (Kiwi.com) |
Popular in | March |
Cheapest in | September |
Average price | $473 |
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 7,457,451 searches. Data last updated October 30, 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 Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Tue 12/29
10:48 pm-8:18 pm
3 stops42h 30m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$191
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Thu 12/31
5:45 am-7:50 pm
2 stops11h 05m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$202
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Thu 12/31
10:30 pm-8:45 am
3 stops31h 15m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$212
Quickest round-trip
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Wed 12/30
6:20 am-3:05 pm
1 stop5h 45m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$240
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Wed 12/30
6:30 am-8:18 pm
3 stops34h 48m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$243
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Thu 1/21
5:00 am-4:54 pm
2 stops8h 54m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$262
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Wed 1/13
5:00 am-4:54 pm
2 stops8h 54m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$262
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Mon 11/23
5:00 am-4:04 pm
1 stop8h 04m
Knoxville McGhee Tyson
Wed 12/31
12:00 am-9:00 pm
Nonstop0h 00m
$285
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Wed 11/18
5:00 am-4:59 pm
2 stops8h 59m
Knoxville McGhee Tyson
Sat 11/21
3:45 pm-9:40 pm
1 stop8h 55m
$398
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Sat 1/9
5:40 am-3:50 pm
2 stops7h 10m
Knoxville McGhee Tyson
Fri 1/15
3:50 pm-11:30 pm
2 stops10h 40m
$403
Showing 1-10 of 20 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 October.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 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 24 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 $421). 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?
Airfare is below average for this route at the moment.
Ontario to Knoxville flights typically cost between $415 and $629 in December.The cheapest round-trip price found within the last 5 days was $243 on Multiple Airlines (Dec 4-Dec 7).
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 October 30, 2026.
Read reviews from past customers who have flown Southwest,Delta, andUnited 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.
Crew
8.6
Food
7.0
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
Crew
8.6
Food
7.0
Overall
7.9
Comfort
8.0
Boarding
8.1
Entertainment
7.4
Reviews
1 / 20
8.0
ExcellentLa Tracimeldamarcos,Jun 2026
LAX - SLC
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
Morristown
Newport
Bryson City
Crossville
Murphy
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Other flights to Knoxville
Explore flights to Knoxville departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on October 30, 2026.
Ontario and Knoxville flights
Browse other Ontario and Knoxville flight options. Last updated on October 30, 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 October 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Ontario to Knoxville
Discover the top 4 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 7,457,451 searches. Data last updated October 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$384 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$319 | Average$499 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$364 | Average$525 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$376 | Average$457 | FlexibilityNo cancel fee | On-time63% |