How long is the flight from Ontario to Knoxville?

Departing from Ontario to Knoxville will take you 7h 40m. Airlines will cover a distance of 1897 mi.

What are the cheapest airlines flying from Ontario to Knoxville round-trip?

Currently priced at $288, American Airlines will fly you from Ontario to Knoxville and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $288 and $288, respectively. These flights start at 31% lower than the current average price 3 months from now.

In terms of precipitation, rainfall in Knoxville ranges from 2.7 - 4.8 inches per month. March is typically the wettest month, when rainfall can reach 4.8 in. October is typically the driest time to visit Knoxville when rainfall is around 2.7 in.

If weather is an important factor for your trip to Knoxville, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).

What are the most popular airlines that fly from Ontario to Knoxville?

The most popular airlines flying from Ontario to Knoxville are American Airlines, Delta and United Airlines. Something to consider prior to booking your flight.

Most accurate provider : When it comes to deals on Ontario-Knoxville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Knoxville flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

Can I find deals for flights from Ontario to Knoxville that include hotel bookings?

Yes. In addition to deals on Ontario to Knoxville flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Ontario to Knoxville?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Knoxville.

Can I find deals for business class flights from Ontario to Knoxville?

Yes. Cheapflights offers flight deals from Ontario to Knoxville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$78+ Flights from Ontario to Knoxville

Home Search by date Vacation packages Hotels Flight deals Car rental Travel tips & news

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.

Cheapflights Tip: The best prices from Ontario to Knoxville McGhee Tyson are usually found in April or August, booked 64 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Find flight deals from Ontario to Knoxville

Cheapest flights from Ontario to Knoxville
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 noviembre 6, 2025.

vie. 12/126:15 amONT - TYS

1 stop7h 47mMultiple Airlines

lun. 12/158:00 amTYS - ONT

1 stop9h 04mMultiple Airlines

Deal found 11/6

$240

mié. 11/1912:58 amONT - TYS

1 stop9h 26mMultiple Airlines

lun. 11/248:30 amTYS - ONT

1 stop8h 56mMultiple Airlines

Deal found 11/5

$266

jue. 12/42:59 pmONT - TYS

1 stop23h 03mMultiple Airlines

mar. 12/94:52 pmTYS - ONT

2 stops31h 25mMultiple Airlines

Deal found 11/5

$285

mar. 12/1612:30 pmONT - TYS

2 stops45h 41mMultiple Airlines

lun. 1/58:00 amTYS - ONT

1 stop12h 15mMultiple Airlines

Deal found 11/4

$290

jue. 11/66:53 amONT - TYS

1 stop8h 29mFrontier

jue. 11/137:17 pmTYS - ONT

1 stop18h 53mFrontier

Deal found 11/5

$292

Best flights from Ontario to Knoxville
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 noviembre 6, 2025.

vie. 12/126:15 amONT - TYS

1 stop7h 47mMultiple Airlines

lun. 12/158:00 amTYS - ONT

1 stop9h 04mMultiple Airlines

Deal found 11/6

$240

jue. 2/266:00 amONT - TYS

1 stop7h 40mFrontier

dom. 3/15:35 pmTYS - ONT

1 stop9h 24mFrontier

Deal found 11/6

$266

sáb. 4/2510:59 pmONT - TYS

1 stop7h 12mDelta

mié. 4/292:30 pmTYS - ONT

1 stop6h 45mDelta

Deal found 11/4

$319

jue. 11/2012:23 pmONT - TYS

1 stop24h 30mMultiple Airlines

lun. 11/248:30 amTYS - ONT

1 stop15h 36mMultiple Airlines

Deal found 11/5

$270

vie. 11/217:48 pmONT - TYS

1 stop20h 22mFrontier

vie. 11/284:48 pmTYS - ONT

1 stop10h 09mFrontier

Deal found 11/4

$299

lun. 11/247:06 pmONT - TYS

1 stop15h 48mMultiple Airlines

vie. 11/2812:45 pmTYS - ONT

2 stops24h 26mMultiple Airlines

Deal found 11/5

$345

Last-minute flights from Ontario to Knoxville
Discover last-minute flight deals from Ontario to Knoxville. Data last updated noviembre 6, 2025 and is based on user searches.

jue. 11/66:53 amONT - TYS

1 stop8h 29mFrontier

jue. 11/137:17 pmTYS - ONT

1 stop18h 53mFrontier

Deal found 11/5

$292

mié. 11/1912:58 amONT - TYS

1 stop9h 26mMultiple Airlines

lun. 11/248:30 amTYS - ONT

1 stop8h 56mMultiple Airlines

Deal found 11/5

$266

jue. 12/42:59 pmONT - TYS

1 stop23h 03mMultiple Airlines

mar. 12/94:52 pmTYS - ONT

2 stops31h 25mMultiple Airlines

Deal found 11/5

$285

vie. 12/126:15 amONT - TYS

1 stop7h 47mMultiple Airlines

lun. 12/158:00 amTYS - ONT

1 stop9h 04mMultiple Airlines

Deal found 11/6

$240

mar. 12/1612:30 pmONT - TYS

2 stops45h 41mMultiple Airlines

lun. 1/58:00 amTYS - ONT

1 stop12h 15mMultiple Airlines

Deal found 11/4

$290

One-way flights from Ontario to Knoxville
Search for one-way flight options from Ontario to Knoxville. Find affordable one-way fares based on user searches. Data last updated noviembre 6, 2025.

jue. 11/2012:58 amONT - TYS

1 stop11h 55mFrontier

Deal found 11/6

$78

sáb. 11/1512:05 pmONT - TYS

1 stop27h 17mFrontier

Deal found 11/5

$96

mié. 12/106:15 amONT - TYS

2 stops27h 56mMultiple Airlines

Deal found 11/4

$123

mié. 12/106:15 amONT - TYS

2 stops30h 42mFrontier

Deal found 11/5

$128

jue. 11/2712:58 amONT - TYS

1 stop11h 55mFrontier

Deal found 11/5

$147

mié. 11/198:45 amONT - TYS

1 stop25h 39mMultiple Airlines

Deal found 11/6

$150

dom. 12/74:01 pmONT - TYS

1 stop20h 56mFrontier

Deal found 11/5

$151

vie. 11/2812:58 amONT - TYS

1 stop15h 12mFrontier

Deal found 11/5

$153

dom. 11/166:53 amONT - TYS

1 stop8h 29mFrontier

Deal found 11/5

$171

mié. 11/128:45 amONT - TYS

1 stop25h 59mMultiple Airlines

Deal found 11/6

$173

Cheap flight deals from Ontario to Knoxville

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$142 (Frontier)
One-way from	$78 (Frontier)
Popular in	October
Cheapest in	April
Average price	$368

Provider with most accurate pricing for Ontario-Knoxville McGhee Tyson flight deals.

Search Deals

Provider most trusted by Cheapflights users for Ontario-Knoxville McGhee Tyson flights.

Search Deals

From Ontario to Knoxville McGhee Tyson

Search Deals

One-way flight from Ontario to Knoxville McGhee Tyson

Search Deals

Highest demand for flights based on searches. 4% potential increase in price ($18 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in November 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

vie. 12/12

6:15 am-5:02 pm

1 stop7h 47m

Knoxville McGhee Tyson

lun. 12/15

8:00 am-2:04 pm

1 stop9h 04m

$240

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

jue. 2/26

6:00 am-4:40 pm

1 stop7h 40m

Knoxville McGhee Tyson

dom. 3/1

5:35 pm-11:59 pm

1 stop9h 24m

$266

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

jue. 11/20

12:23 pm-3:53 pm

1 stop24h 30m

Knoxville McGhee Tyson

lun. 11/24

8:30 am-9:06 pm

1 stop15h 36m

$270

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

vie. 11/21

7:48 pm-7:10 pm

1 stop20h 22m

Knoxville McGhee Tyson

vie. 11/28

4:48 pm-11:57 pm

1 stop10h 09m

$299

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

sáb. 4/25

10:59 pm-9:11 am

1 stop7h 12m

Knoxville McGhee Tyson

mié. 4/29

2:30 pm-6:15 pm

1 stop6h 45m

$319

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

lun. 11/24

7:06 pm-1:54 pm

1 stop15h 48m

Knoxville McGhee Tyson

vie. 11/28

12:45 pm-10:11 am

2 stops24h 26m

$345

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

vie. 11/21

12:58 am-7:10 pm

1 stop15h 12m

$78

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

jue. 11/20

12:58 am-3:53 pm

1 stop11h 55m

$78

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

sáb. 11/15

12:05 pm-6:22 pm

1 stop27h 17m

$96

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

mié. 12/10

6:15 am-1:11 pm

2 stops27h 56m

$123

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 15 results

Compare providers for flights from Ontario to Knoxville

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Ontario to Knoxville in November.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Ontario-Knoxville flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Knoxville flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 64 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, January is the cheapest month in which you can book a flight from Ontario to Knoxville (average of $42). Flying from Ontario to Knoxville in June is currently the most expensive (average of $288). 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.

What is the cheapest time of day to fly from ONT to TYS?

It’s typically best to fly out from Ontario to Knoxville in the afternoon. Doing so could potentially save you 12% on the flight price compared to flying in the evening, which is usually more expensive.

Reviews of airlines servicing Knoxville

Read reviews from past customers who have flown Delta, United Airlines, and American 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.

Delta

7.9

Good

8,001 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Delta

7.9

Good

8,001 reviews

Delta

7.9

Good

8,001 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

United Airlines

7.4

Good

9,007 reviews

Delta

7.9

Good

8,001 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

American Airlines

7.2

Good

11,040 reviews

Delta

7.9

Good

8,001 reviews

Reviews

1 / 20

10.0

Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

How long is the flight from Ontario to Knoxville?
Departing from Ontario to Knoxville will take you 7h 40m. Airlines will cover a distance of 1897 mi.
What are the cheapest airlines flying from Ontario to Knoxville round-trip?
Currently priced at $288, American Airlines will fly you from Ontario to Knoxville and back. In addition to American Airlines, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $288 and $288, respectively. These flights start at 31% lower than the current average price 3 months from now.
Can I find deals for flights from Ontario to Knoxville that include hotel bookings?
Yes. In addition to deals on Ontario to Knoxville flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Ontario to Knoxville?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Knoxville.
Can I find deals for business class flights from Ontario to Knoxville?
Yes. Cheapflights offers flight deals from Ontario to Knoxville by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Ontario to Knoxville?
Currently, January is the cheapest month in which you can book a flight from Ontario to Knoxville (average of $42). Flying from Ontario to Knoxville in June is currently the most expensive (average of $288). 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.

See more FAQs

Morristown

Cherokee

Crossville

Corbin

Bryson City

Alcoa

Oak Ridge

Murphy

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ontario to Knoxville

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$288	Average$419	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$288	Average$467	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$288	Average$401	FlexibilityNo cancel fee	On-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

$78+ 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 11/20. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Ontario to Knoxville with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Ontario to Knoxville McGhee Tyson are usually found in April or August, booked 64 days in advance, depart on a Saturday or Tuesday and return on a Tuesday

Find flight deals from Ontario to Knoxville

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 noviembre 6, 2025.

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 noviembre 6, 2025.

Cheap flight deals from Ontario to Knoxville

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from Ontario to Knoxville that are best for you.

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 November.

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.

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?

What is the cheapest month to book a flight from Ontario to Knoxville?

What is the cheapest time of day to fly from ONT to TYS?

Reviews of airlines servicing Knoxville

Read reviews from past customers who have flown Delta, United Airlines, and American 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.

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.

How long is the flight from Ontario to Knoxville?

What are the cheapest airlines flying from Ontario to Knoxville round-trip?

Can I find deals for flights from Ontario to Knoxville that include hotel bookings?

How can I find direct flights from Ontario to Knoxville?

Can I find deals for business class flights from Ontario to Knoxville?

What is the cheapest month to book a flight from Ontario to Knoxville?

Traveling to a place near Knoxville?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Ontario to Knoxville

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from Ontario to Knoxville

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from Ontario to Knoxville
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 noviembre 6, 2025.