$171+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — TYS
Sep 30 — Oct 71
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 August 31, 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 August 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/1911:45 am -
1 stop22h 59m
Fri 9/258:00 am -
2 stops42h 47m
Deal found 8/27![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/1911:45 am -
1 stop22h 59m
Thu 9/247:00 am -
1 stop19h 47m
Deal found 8/27![Multiple Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/1911:45 am -
1 stop22h 59m
Mon 9/218:00 am -
2 stops18h 47m
Deal found 8/27![Multiple Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/191:18 pm -
1 stop6h 26m
Sat 9/263:45 pm -
1 stop9h 14m
Deal found 8/27![United Airlines logo]()
$363
This American Airlines deal was found by Cheapflights users on 8/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/72:22 pm -
1 stop6h 10m
Wed 11/115:30 am -
1 stop7h 10m
Deal found 8/29![American Airlines logo]()
$365
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/162:30 pm -
1 stop23h 48m
Mon 9/218:00 am -
2 stops29h 30m
Deal found 8/27![Multiple Airlines logo]()
$367
This United Airlines deal was found by Cheapflights users on 8/29. 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.
Sat 11/77:00 am -
1 stop6h 59m
Wed 11/119:00 am -
2 stops12h 01m
Deal found 8/29![United Airlines logo]()
$370
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/191:18 pm -
1 stop6h 26m
Fri 9/253:45 pm -
1 stop9h 14m
Deal found 8/27![United Airlines logo]()
$376
This Kiwi.com deal was found by Cheapflights users on 8/29. 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.
Thu 10/292:23 pm -
1 stop28h 26m
Mon 11/29:42 pm -
1 stop21h 39m
Deal found 8/29![Multiple Airlines logo]()
$377
This Kiwi.com deal was found by Cheapflights users on 8/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/58:35 pm -
1 stop23h 00m
Mon 11/910:09 pm -
1 stop14h 31m
Deal found 8/31![Multiple Airlines logo]()
$388
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 August 31, 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 August 31, 2026.
This United Airlines deal was found by Cheapflights users on 8/29. 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.
Sat 11/77:00 am -
1 stop6h 59m
Wed 11/119:00 am -
2 stops12h 01m
Deal found 8/29![United Airlines logo]()
$370
This Delta deal was found by Cheapflights users on 8/29. 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 10/2611:15 pm -
1 stop8h 39m
Wed 10/285:40 am -
1 stop8h 26m
Deal found 8/29![Delta logo]()
$397
This Southwest deal was found by Cheapflights users on 8/29. 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.
Sat 11/76:10 am -
2 stops8h 30m
Wed 11/117:05 am -
2 stops8h 05m
Deal found 8/29![Southwest logo]()
$407
This Southwest deal was found by Cheapflights users on 8/27. 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 10/139:15 am -
2 stops8h 50m
Tue 10/204:20 pm -
1 stop8h 25m
Deal found 8/27![Southwest logo]()
$411
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Tue 9/229:01 am -
2 stops12h 22m
Sat 9/266:00 am -
2 stops12h 22m
Deal found 8/27![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 8/30. 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 Southwest is selected, and click “Compare selected ” under the list of providers to see comparable flight deals.
Thu 1/147:15 am -
1 stop5h 30m
Mon 1/184:10 pm -
2 stops9h 05m
Deal found 8/30![Southwest logo]()
$453
This Southwest deal was found by Cheapflights users on 8/31. 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.
Sat 10/175:45 am -
2 stops9h 10m
Tue 10/204:20 pm -
1 stop8h 25m
Deal found 8/31![Southwest logo]()
$463
This United Airlines deal was found by Cheapflights users on 8/27. 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 10/178:03 am -
2 stops11h 11m
Wed 10/213:45 pm -
1 stop9h 14m
Deal found 8/27![United Airlines logo]()
$550
This United Airlines deal was found by Cheapflights users on 8/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/105:00 am -
1 stop7h 54m
Mon 9/143:40 pm -
1 stop9h 19m
Deal found 8/26![United Airlines logo]()
$576
This Southwest deal was found by Cheapflights users on 8/29. 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.
Tue 12/225:10 am -
2 stops10h 30m
Tue 12/297:00 am -
2 stops9h 55m
Deal found 8/29![Southwest logo]()
$525
Last-minute flights from Ontario to KnoxvilleDiscover last-minute flight deals from Ontario to Knoxville. Data last updated August 31, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Knoxville. Data last updated August 31, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/162:30 pm -
1 stop23h 48m
Mon 9/218:00 am -
2 stops29h 30m
Deal found 8/27![Multiple Airlines logo]()
$367
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/162:30 pm -
1 stop23h 48m
Fri 9/258:00 am -
2 stops29h 30m
Deal found 8/27![Multiple Airlines logo]()
$396
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/162:30 pm -
1 stop23h 48m
Thu 9/247:00 am -
1 stop19h 47m
Deal found 8/27![Multiple Airlines logo]()
$397
This Kiwi.com deal was found by Cheapflights users on 8/27. 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.
Thu 9/176:45 pm -
2 stops36h 29m
Thu 9/247:00 am -
1 stop19h 47m
Deal found 8/27![Multiple Airlines logo]()
$391
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/1911:45 am -
1 stop22h 59m
Fri 9/258:00 am -
2 stops42h 47m
Deal found 8/27![Multiple Airlines logo]()
$338
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/1911:45 am -
1 stop22h 59m
Thu 9/247:00 am -
1 stop19h 47m
Deal found 8/27![Multiple Airlines logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/1911:45 am -
1 stop22h 59m
Mon 9/218:00 am -
2 stops18h 47m
Deal found 8/27![Multiple Airlines logo]()
$355
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/191:18 pm -
1 stop6h 26m
Sat 9/263:45 pm -
1 stop9h 14m
Deal found 8/27![United Airlines logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/27. 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 9/191:18 pm -
1 stop6h 26m
Fri 9/253:45 pm -
1 stop9h 14m
Deal found 8/27![United Airlines logo]()
$376
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 August 31, 2026.
Search for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated August 31, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/27. 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 9/3011:45 am -
3 stops32h 54m
Deal found 8/27![Multiple Airlines logo]()
$171
This Delta deal was found by Cheapflights users on 8/26. 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 9/2810:00 pm -
1 stop8h 29m
Deal found 8/26![Delta logo]()
$182
This Delta deal was found by Cheapflights users on 8/31. 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 12/1612:20 pm -
1 stop6h 57m
Deal found 8/31![Delta logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 8/27. 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.
Tue 11/311:52 am -
3 stops44h 46m
Deal found 8/27![Multiple Airlines logo]()
$184
This Southwest deal was found by Cheapflights users on 8/27. 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 11/37:50 am -
2 stops8h 55m
Deal found 8/27![Southwest logo]()
$187
This Southwest deal was found by Cheapflights users on 8/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/166:50 am -
2 stops9h 55m
Deal found 8/30![Southwest logo]()
$188
This Kiwi.com deal was found by Cheapflights users on 8/31. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/238:03 pm -
2 stops34h 41m
Deal found 8/31![Multiple Airlines logo]()
$207
This United Airlines deal was found by Cheapflights users on 8/27. 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.
Mon 10/56:32 pm -
2 stops12h 13m
Deal found 8/27![United Airlines logo]()
$208
This Delta deal was found by Cheapflights users on 8/28. 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 9/267:05 am -
1 stop6h 38m
Deal found 8/28![Delta logo]()
$215
This Kiwi.com deal was found by Cheapflights users on 8/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/228:35 pm -
3 stops45h 15m
Deal found 8/30![Multiple Airlines logo]()
$216
This Southwest deal was found by Cheapflights users on 8/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/178:05 am -
2 stops9h 25m
Deal found 8/30![Southwest logo]()
$220
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 August 31, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $338 (Kiwi.com) |
One-way from | $171 (Kiwi.com) |
Popular in | March |
Cheapest in | November |
Average price | $456 |
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 August 31, 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
Sat 11/7
7:00 am-4:59 pm
1 stop6h 59m
Knoxville McGhee Tyson
Wed 11/11
9:00 am-6:01 pm
2 stops12h 01m
$370
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Mon 10/26
11:15 pm-10:54 am
1 stop8h 39m
Knoxville McGhee Tyson
Wed 10/28
5:40 am-11:06 am
1 stop8h 26m
$397
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Sat 11/7
6:10 am-5:40 pm
2 stops8h 30m
Knoxville McGhee Tyson
Wed 11/11
7:05 am-12:10 pm
2 stops8h 05m
$407
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Tue 10/13
9:15 am-9:05 pm
2 stops8h 50m
Knoxville McGhee Tyson
Tue 10/20
4:20 pm-9:45 pm
1 stop8h 25m
$411
Quickest round-trip
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Thu 1/14
7:15 am-3:45 pm
1 stop5h 30m
Knoxville McGhee Tyson
Mon 1/18
4:10 pm-10:15 pm
2 stops9h 05m
$453
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Sat 10/17
5:45 am-5:55 pm
2 stops9h 10m
Knoxville McGhee Tyson
Tue 10/20
4:20 pm-9:45 pm
1 stop8h 25m
$463
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Tue 9/22
9:01 am-12:23 am
2 stops12h 22m
Knoxville McGhee Tyson
Sat 9/26
6:00 am-3:22 pm
2 stops12h 22m
$473
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Tue 12/22
5:10 am-6:40 pm
2 stops10h 30m
Knoxville McGhee Tyson
Tue 12/29
7:00 am-1:55 pm
2 stops9h 55m
$525
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Sat 10/17
8:03 am-10:14 pm
2 stops11h 11m
Knoxville McGhee Tyson
Wed 10/21
3:45 pm-9:59 pm
1 stop9h 14m
$550
OntarioKnoxville
ONT Ontario - TYS Knoxville McGhee Tyson
ONTTYS
Ontario
Thu 9/10
5:00 am-3:54 pm
1 stop7h 54m
Knoxville McGhee Tyson
Mon 9/14
3:40 pm-9:59 pm
1 stop9h 19m
$576
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 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 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, November is the cheapest month in which you can book a flight from Ontario to Knoxville (average of $416). 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 typical for this route at the moment.
Ontario to Knoxville flights typically cost between $318 and $533 in September.The cheapest round-trip price found within the last 5 days was $338 on Multiple Airlines (Sep 19-Sep 25).
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 August 31, 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.
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
Reviews
1 / 20
10.0
ExcellentMichael,Sep 2023
SMF - ATL
Food
7.2
Entertainment
7.8
Comfort
7.8
Crew
8.5
Overall
7.8
Boarding
8.1
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
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Alternative routes for Ontario to Knoxville
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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 August 31, 2026.
Ontario and Knoxville flights
Browse other Ontario and Knoxville flight options. Last updated on August 31, 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 7,457,451 searches. Data last updated August 31, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$276 | Average$467 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$318 | Average$499 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$367 | Average$485 | FlexibilityNo cancel fee | On-time71% |