How long is the flight from Knoxville to Ontario?

For as low as $319, American Airlines can have you in Ontario from Knoxville in 7h 09m. Airlines will cover a distance of 1897 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Currently priced at $151, Frontier will fly you from Knoxville to Ontario and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $219 and $288, respectively. These flights start at 61% lower than the current average price 3 months from now.

What are the cheapest airlines to fly from Knoxville to Ontario one-way?

For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $114. Users have also found prices from $174 and $204 on Delta and United Airlines, respectively.

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August 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 December, when temperatures are typically at their lowest (around 53.6 F).

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

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

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

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Knoxville to Ontario as you normally would.

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

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

How can I find direct flights from Knoxville to Ontario?

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

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

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

$118+ Flights from Knoxville to Ontario

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Cheap flight deals from Knoxville to Ontario

Cheapest flights from Knoxville to Ontario
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 January 2, 2026.

Wed 12/317:23 pmTYS - ONT

2 stops17h 38mUnited Airlines

Thu 1/16:39 pmONT - TYS

2 stops12h 36mUnited Airlines

Deal found 12/31

$899

Wed 12/316:40 pmTYS - ONT

2 stops32h 19mMultiple Airlines

Wed 1/77:00 amONT - TYS

1 stop29h 28mMultiple Airlines

Deal found 12/31

$920

Wed 12/317:01 pmTYS - ONT

2 stops17h 37mAmerican Airlines

Wed 1/76:22 amONT - TYS

2 stops8h 20mAmerican Airlines

Deal found 12/31

$948

Best flights from Knoxville to Ontario
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 January 2, 2026.

Wed 4/16:21 pmTYS - ONT

1 stop7h 09mAmerican Airlines

Tue 4/72:08 pmONT - TYS

1 stop6h 48mAmerican Airlines

Deal found 12/31

$319

Thu 1/295:40 amTYS - ONT

1 stop8h 51mDelta

Mon 2/210:30 pmONT - TYS

1 stop7h 54mDelta

Deal found 1/1

$331

Fri 2/138:12 pmTYS - ONT

1 stop6h 47mFrontier

Mon 2/166:10 amONT - TYS

1 stop10h 08mFrontier

Deal found 1/1

$352

Wed 1/284:55 pmTYS - ONT

1 stop8h 03mUnited Airlines

Wed 2/41:24 pmONT - TYS

1 stop6h 07mUnited Airlines

Deal found 12/31

$367

Sat 1/1712:21 pmTYS - ONT

1 stop9h 24mAmerican Airlines

Sat 1/319:59 amONT - TYS

2 stops9h 48mAmerican Airlines

Deal found 12/31

$324

Thu 1/2912:19 pmTYS - ONT

2 stops12h 54mAmerican Airlines

Mon 2/26:00 amONT - TYS

1 stop6h 46mAmerican Airlines

Deal found 1/1

$337

Wed 1/218:45 amTYS - ONT

1 stop7h 02mUnited Airlines

Sat 1/246:00 amONT - TYS

1 stop6h 10mUnited Airlines

Deal found 12/31

$394

Tue 1/202:37 pmTYS - ONT

1 stop9h 28mDelta

Sat 1/2410:30 pmONT - TYS

1 stop7h 51mDelta

Deal found 12/31

$405

Sat 1/174:55 pmTYS - ONT

1 stop8h 03mUnited Airlines

Thu 1/226:00 amONT - TYS

1 stop9h 05mUnited Airlines

Deal found 12/31

$415

Last-minute flights from Knoxville to Ontario
Discover last-minute flight deals from Knoxville to Ontario. Data last updated January 2, 2026 and is based on user searches.

Sun 1/44:26 pmTYS - ONT

1 stop10h 33mFrontier

Sun 1/116:00 amONT - TYS

1 stop6h 28mFrontier

Deal found 1/1

$323

Sun 1/44:26 pmTYS - ONT

1 stop10h 33mFrontier

Mon 1/56:45 amONT - TYS

1 stop6h 06mFrontier

Deal found 12/31

$338

Sat 1/176:51 pmTYS - ONT

1 stop6h 57mAmerican Airlines

Sat 1/316:00 amONT - TYS

1 stop8h 42mAmerican Airlines

Deal found 12/31

$319

Wed 1/218:45 amTYS - ONT

1 stop7h 02mUnited Airlines

Sat 1/246:00 amONT - TYS

1 stop6h 10mUnited Airlines

Deal found 12/31

$394

Wed 1/284:55 pmTYS - ONT

1 stop8h 03mUnited Airlines

Wed 2/41:24 pmONT - TYS

1 stop6h 07mUnited Airlines

Deal found 12/31

$367

Thu 1/295:40 amTYS - ONT

1 stop8h 51mDelta

Mon 2/210:30 pmONT - TYS

1 stop7h 54mDelta

Deal found 1/1

$331

Thu 1/2912:19 pmTYS - ONT

2 stops12h 54mAmerican Airlines

Mon 2/26:00 amONT - TYS

1 stop6h 46mAmerican Airlines

Deal found 1/1

$337

One-way flights from Knoxville to Ontario
Search for one-way flight options from Knoxville to Ontario. Find affordable one-way fares based on user searches. Data last updated January 2, 2026.

Thu 1/84:23 pmTYS - ONT

1 stop10h 33mFrontier

Deal found 1/1

$118

Fri 1/167:35 amTYS - ONT

1 stop13h 09mMultiple Airlines

Deal found 12/31

$262

Wed 6/35:20 pmTYS - ONT

1 stop7h 01mUnited Airlines

Deal found 1/1

$264

Sun 4/124:30 pmTYS - ONT

1 stop7h 06mUnited Airlines

Deal found 1/2

$378

Thu 1/88:45 amTYS - ONT

2 stops11h 58mUnited Airlines

Deal found 1/1

$389

Fri 1/169:05 amTYS - ONT

2 stops14h 53mUnited Airlines

Deal found 12/31

$505

Find flight deals from Knoxville to Ontario

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$319 (American Airlines)
One-way from	$118 (Frontier)
Popular in	December
Cheapest in	January
Average price	$301

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

Search Deals

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

Search Deals

From Knoxville McGhee Tyson to Ontario

Search Deals

One-way flight from Knoxville McGhee Tyson to Ontario

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease ($16 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in January 2026

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Wed 4/1

6:21 pm-10:30 pm

1 stop7h 09m

Ontario

Tue 4/7

2:08 pm-11:56 pm

1 stop6h 48m

$319

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Sat 1/17

12:21 pm-6:45 pm

1 stop9h 24m

Ontario

Sat 1/31

9:59 am-10:47 pm

2 stops9h 48m

$324

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Thu 1/29

5:40 am-11:31 am

1 stop8h 51m

Ontario

Mon 2/2

10:30 pm-9:24 am

1 stop7h 54m

$331

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Thu 1/29

12:19 pm-10:13 pm

2 stops12h 54m

Ontario

Mon 2/2

6:00 am-3:46 pm

1 stop6h 46m

$337

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Fri 2/13

8:12 pm-11:59 pm

1 stop6h 47m

Ontario

Mon 2/16

6:10 am-7:18 pm

1 stop10h 08m

$352

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Wed 1/28

4:55 pm-9:58 pm

1 stop8h 03m

Ontario

Wed 2/4

1:24 pm-10:31 pm

1 stop6h 07m

$367

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Wed 1/21

8:45 am-12:47 pm

1 stop7h 02m

Ontario

Sat 1/24

6:00 am-3:10 pm

1 stop6h 10m

$394

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Tue 1/20

2:37 pm-9:05 pm

1 stop9h 28m

Ontario

Sat 1/24

10:30 pm-9:21 am

1 stop7h 51m

$405

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Sat 1/17

4:55 pm-9:58 pm

1 stop8h 03m

Ontario

Thu 1/22

6:00 am-6:05 pm

1 stop9h 05m

$415

KnoxvilleOntario

TYS - ONT

TYSONT

Knoxville McGhee Tyson

Thu 1/8

4:23 pm-11:56 pm

1 stop10h 33m

$118

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/1

Showing 1-10 of 15 results

Compare providers for flights from Knoxville to Ontario

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

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 Knoxville-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Knoxville-Ontario flight deals on Cheapflights vs. eDreams >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 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 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.

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, January is the cheapest month in which you can book a flight from Knoxville to Ontario (average of $142). Flying from Knoxville to Ontario 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.

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Delta, United Airlines, and American 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.

Delta

7.9

Good

8,021 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta

7.9

Good

8,021 reviews

Delta

7.9

Good

8,021 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines

7.4

Good

9,132 reviews

Delta

7.9

Good

8,021 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

American Airlines

7.2

Good

11,074 reviews

Delta

7.9

Good

8,021 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Frontier

5.7

Fair

3,067 reviews

Delta

7.9

Good

8,021 reviews

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

How long is the flight from Knoxville to Ontario?
For as low as $319, American Airlines can have you in Ontario from Knoxville in 7h 09m. Airlines will cover a distance of 1897 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.
What are the cheapest airlines flying from Knoxville to Ontario round-trip?
Currently priced at $151, Frontier will fly you from Knoxville to Ontario and back. In addition to Frontier, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and American Airlines - these airlines can fly you to your destination from $219 and $288, respectively. These flights start at 61% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Knoxville to Ontario one-way?
For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $114. Users have also found prices from $174 and $204 on Delta and United Airlines, respectively.
Can I find deals for flights from Knoxville to Ontario that include hotel bookings?
Yes. In addition to deals on Knoxville to Ontario flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Knoxville to Ontario?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Knoxville to Ontario.
Can I find deals for business class flights from Knoxville to Ontario?
Yes. Cheapflights offers flight deals from Knoxville to Ontario 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 Knoxville to Ontario?
Currently, January is the cheapest month in which you can book a flight from Knoxville to Ontario (average of $142). Flying from Knoxville to Ontario 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

Browse thousands of different options on Cheapflights for your next trip

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Other flights to Ontario

Top 4 airlines flying from Knoxville to Ontario

Airline	Cheapest	Average	Flexibility	On-time
Frontier	Cheapest$151	Average$349	FlexibilityNo cancel fee	On-time62%
United Airlines	Cheapest$258	Average$449	FlexibilityNo cancel fee	On-time69%
American Airlines	Cheapest$288	Average$377	FlexibilityNo cancel fee	On-time71%
Delta	Cheapest$288	Average$425	FlexibilityNo cancel fee	On-timeN/A

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$118+ 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 1/8. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Knoxville to Ontario with Cheapflights

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Cheap flight deals from Knoxville to Ontario

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 January 2, 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 January 2, 2026.

Find flight deals from Knoxville to Ontario

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 Knoxville to Ontario that are best for you.

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 January.

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.

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?

Reviews of airlines servicing Ontario

Get a feel of what it's like to fly with Delta, United Airlines, and American 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.

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.

How long is the flight from Knoxville to Ontario?

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

What are the cheapest airlines to fly from Knoxville to Ontario one-way?

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

How can I find direct flights from Knoxville to Ontario?

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

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

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 Knoxville to Ontario

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

Top 4 airlines flying from Knoxville to Ontario

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Cheapest flights from Knoxville to Ontario
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 January 2, 2026.