$182+ 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 10/6. Fares are subject to change and may not be available on all flights or dates of travel.
TYS — ONT
Sep 25 — Oct 21
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
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One-way
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 26, 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 26, 2026.
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/199:59 pm -
1 stop15h 32m
Sat 10/3111:52 am -
1 stop23h 19m
Deal found 8/26![Multiple Airlines logo]()
$247
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.
Wed 9/235:40 am -
1 stop8h 29m
Mon 9/2810:00 pm -
1 stop8h 29m
Deal found 8/26![Delta logo]()
$363
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/282:43 pm -
2 stops36h 08m
Wed 11/411:52 am -
1 stop22h 27m
Deal found 8/24![Multiple Airlines logo]()
$364
This Southwest deal was found by Cheapflights users on 8/24. 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 10/283:20 pm -
1 stop8h 25m
Wed 11/47:50 am -
2 stops8h 55m
Deal found 8/24![Southwest logo]()
$368
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 pm -
1 stop7h 59m
Wed 9/305:00 am -
1 stop7h 49m
Deal found 8/24![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 8/24. 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 9/233:00 pm -
2 stops9h 00m
Wed 9/308:30 am -
2 stops7h 30m
Deal found 8/24![Southwest logo]()
$406
This Delta deal was found by Cheapflights users on 8/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:40 pm -
1 stop8h 44m
Sun 9/2710:00 pm -
1 stop8h 29m
Deal found 8/25![Delta logo]()
$415
This Southwest deal was found by Cheapflights users on 8/22. 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 9/293:00 pm -
2 stops9h 00m
Tue 10/69:15 am -
2 stops8h 45m
Deal found 8/22![Southwest logo]()
$416
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 26, 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 26, 2026.
This Delta deal was found by Cheapflights users on 8/23. 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 9/2812:19 pm -
1 stop8h 36m
Deal found 8/23![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/23. 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 9/124:50 pm -
1 stop7h 03m
Sun 9/207:13 pm -
2 stops11h 41m
Deal found 8/23![United Airlines logo]()
$451
This Southwest deal was found by Cheapflights users on 8/23. 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 9/126:50 am -
2 stops12h 40m
Sun 9/207:00 am -
2 stops10h 50m
Deal found 8/23![Southwest logo]()
$492
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:54 pm -
1 stop22h 05m
Sun 10/118:35 pm -
1 stop14h 22m
Deal found 8/21![Multiple Airlines logo]()
$518
This United Airlines deal was found by Cheapflights users on 8/25. 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.
Tue 11/105:05 pm -
1 stop6h 46m
Wed 11/115:00 am -
1 stop7h 00m
Deal found 8/25![United Airlines logo]()
$463
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.
Fri 9/115:40 am -
1 stop8h 25m
Mon 9/1410:00 pm -
1 stop8h 29m
Deal found 8/26![Delta logo]()
$476
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/56:02 pm -
1 stop7h 33m
Fri 9/116:00 am -
1 stop9h 15m
Deal found 8/22![United Airlines logo]()
$465
This Delta deal was found by Cheapflights users on 8/23. 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 8/314:38 pm -
1 stop6h 15m
Sun 9/612:00 pm -
1 stop7h 39m
Deal found 8/23![Delta logo]()
$523
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.
Fri 10/234:53 pm -
1 stop7h 05m
Sat 10/315:00 am -
2 stops12h 54m
Deal found 8/21![United Airlines logo]()
$481
Last-minute flights from Knoxville to OntarioDiscover last-minute flight deals from Knoxville to Ontario. Data last updated August 26, 2026 and is based on user searches.
Discover last-minute flight deals from Knoxville to Ontario. Data last updated August 26, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/124:50 pm -
1 stop7h 03m
Sun 9/136:00 am -
1 stop9h 15m
Deal found 8/22![United Airlines logo]()
$445
This United Airlines deal was found by Cheapflights users on 8/22. 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 9/226:00 am -
2 stops11h 01m
Tue 10/65:00 am -
1 stop7h 49m
Deal found 8/22![United Airlines logo]()
$427
This Delta deal was found by Cheapflights users on 8/25. 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 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 9/2812:19 pm -
1 stop8h 36m
Deal found 8/25![Delta logo]()
$363
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 pm -
1 stop7h 59m
Wed 9/305:00 am -
1 stop7h 49m
Deal found 8/24![United Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 8/24. 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 9/233:00 pm -
2 stops9h 00m
Wed 9/308:30 am -
2 stops7h 30m
Deal found 8/24![Southwest logo]()
$406
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/247:00 am -
1 stop19h 47m
Mon 9/286:45 pm -
2 stops40h 57m
Deal found 8/26![Multiple Airlines logo]()
$376
This Delta deal was found by Cheapflights users on 8/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/244:40 pm -
1 stop8h 44m
Sun 9/2710:00 pm -
1 stop8h 29m
Deal found 8/25![Delta logo]()
$415
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.
Fri 9/255:20 pm -
1 stop8h 04m
Sun 9/2712:19 pm -
1 stop8h 36m
Deal found 8/26![Delta logo]()
$428
This Southwest deal was found by Cheapflights users on 8/22. 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 9/293:00 pm -
2 stops9h 00m
Tue 10/69:15 am -
2 stops8h 45m
Deal found 8/22![Southwest logo]()
$416
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 26, 2026.
Search for one-way flight options from Knoxville to Ontario. Find affordable one-way fares based on user searches. Data last updated August 26, 2026.
This Southwest deal was found by Cheapflights users on 8/24. 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 10/64:20 pm -
1 stop8h 20m
Deal found 8/24![Southwest logo]()
$182
This Delta deal was found by Cheapflights users on 8/24. 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 9/121:31 pm -
1 stop8h 10m
Deal found 8/24![Delta logo]()
$183
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/16:00 am -
2 stops16h 36m
Deal found 8/25![Multiple Airlines logo]()
$190
This Southwest deal was found by Cheapflights users on 8/24. 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 10/134:20 pm -
1 stop8h 20m
Deal found 8/24![Southwest logo]()
$195
This Kiwi.com deal was found by Cheapflights users on 8/25. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:04 pm -
3 stops42h 25m
Deal found 8/25![Multiple Airlines logo]()
$199
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/122:47 pm -
1 stop21h 22m
Deal found 8/24![Multiple Airlines logo]()
$201
This Kiwi.com deal was found by Cheapflights users on 8/24. 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 10/66:04 pm -
3 stops32h 43m
Deal found 8/24![Multiple Airlines logo]()
$207
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 26, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $247 (Kiwi.com) |
One-way from | $182 (Southwest) |
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 26, 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
12:19 pm-11:55 pm
1 stop8h 36m
$363
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 9/12
4:50 pm-8:53 pm
1 stop7h 03m
Ontario
Sun 9/20
7:13 pm-9:54 am
2 stops11h 41m
$451
Quickest round-trip
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Tue 11/10
5:05 pm-8:51 pm
1 stop6h 46m
Ontario
Wed 11/11
5:00 am-3:00 pm
1 stop7h 00m
$463
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 9/5
6:02 pm-10:35 pm
1 stop7h 33m
Ontario
Fri 9/11
6:00 am-6:15 pm
1 stop9h 15m
$465
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Fri 9/11
5:40 am-11:05 am
1 stop8h 25m
Ontario
Mon 9/14
10:00 pm-9:29 am
1 stop8h 29m
$476
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Fri 10/23
4:53 pm-8:58 pm
1 stop7h 05m
Ontario
Sat 10/31
5:00 am-8:54 pm
2 stops12h 54m
$481
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Sat 9/12
6:50 am-4:30 pm
2 stops12h 40m
Ontario
Sun 9/20
7:00 am-8:50 pm
2 stops10h 50m
$492
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Mon 10/5
9:54 pm-4:59 pm
1 stop22h 05m
Ontario
Sun 10/11
8:35 pm-1:57 pm
1 stop14h 22m
$518
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Mon 8/31
4:38 pm-7:53 pm
1 stop6h 15m
Ontario
Sun 9/6
12:00 pm-10:39 pm
1 stop7h 39m
$523
Cheapest one-way
KnoxvilleOntario
TYS Knoxville McGhee Tyson - ONT Ontario
TYSONT
Knoxville McGhee Tyson
Tue 10/13
4:20 pm-9:40 pm
1 stop8h 20m
$195
Showing 1-10 of 20 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, October is the cheapest month in which you can book a flight from Knoxville to Ontario (average of $379). 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 October.The cheapest round-trip price found within the last 5 days was $247 on Multiple Airlines (Oct 19-Oct 31).
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 26, 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
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
Reviews
1 / 20
10.0
ExcellentAaron,Oct 2024
TUS - LAX
Crew
8.5
Overall
7.8
Comfort
7.8
Entertainment
7.8
Boarding
8.1
Food
7.2
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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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Knoxville to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 26, 2026.
Knoxville and Ontario flights
Browse other Knoxville and Ontario flight options. Last updated on August 26, 2026.
Other flights from Knoxville
Browse through other flights departing from Knoxville. Flights are based on user searches made on Cheapflights and were last updated on August 26, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Knoxville to Ontario
Discover the top 4 airlines that operate flights from Knoxville to Ontario. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated August 26, 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$495 | FlexibilityNo cancel fee | On-time71% |