What airlines fly to Knoxville?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Knoxville from Ontario according to our data. American Airlines is the first choice among our users, with 66% of people opting to fly with this airline when traveling to Knoxville. Keep in mind that there are 4 different airlines that fly to Knoxville on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Ontario to Knoxville McGhee Tyson?

Frontier, Delta, and United Airlines are the most popular carriers operating from Ontario to Knoxville McGhee Tyson

Which airport is the most popular layover for flights between Ontario and Knoxville?

Atlanta (ATL) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ontario to Knoxville?

Flights via Dallas (DFW) offer the lowest average round-trip price of $338.

Which layover airport has the shortest connection time from Ontario to Knoxville?

Dallas (DFW) has the shortest average layover time for this route: 0h 56m.

Which layover airport has the shortest travel time from Ontario to Knoxville?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 6h 14m.

When did momondo last update prices for flights from Ontario Airport to Knoxville McGhee Tyson Airport?

Prices for flights from Ontario Airport to Knoxville McGhee Tyson Airport refresh daily.

How many operators does momondo search for flights from Ontario Airport to Knoxville McGhee Tyson Airport?

There are 4 operators available for flights from Ontario Airport to Knoxville McGhee Tyson Airport as of July 2025.

How old do you have to be to fly from Ontario Airport to Knoxville McGhee Tyson Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Knoxville McGhee Tyson Airport.

What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

The travel and health documents you'll need for your trip to Knoxville McGhee Tyson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$127 Cheap Flights from Ontario to Knoxville in 2025

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Find the cheapest flights from Ontario to Knoxville

Round-trip

One-way

Last minute

Cheap round-trip flights

12:59 am - 4:29 pmONT-TYS

12h 30m1 stop

5:25 pm - 11:50 pmTYS-ONT

9h 25m1 stop

$258Frontier

Find Deal

Wed, Aug 13 - Sun, Aug 17

12:59 am - 7:41 pmONT-TYS

15h 42m1 stop

8:33 pm - 11:50 pmTYS-ONT

6h 17m1 stop

$265Frontier

Find Deal

Wed, Aug 20 - Sun, Aug 24

12:59 am - 7:41 pmONT-TYS

15h 42m1 stop

7:10 pm - 11:50 pmTYS-ONT

7h 40m1 stop

$268Frontier

Find Deal

Wed, Aug 27 - Mon, Sep 1

2:57 pm - 12:19 amONT-TYS

6h 22m1 stop

6:39 pm - 10:48 pmTYS-ONT

7h 09m1 stop

$289American Airlines

Find Deal

Fri, Aug 22 - Mon, Aug 25

11:59 pm - 11:30 amONT-TYS

8h 31m1 stop

5:30 am - 11:32 amTYS-ONT

9h 02m2 stops

$294American Airlines

Find Deal

Fri, Aug 22 - Mon, Aug 25

1:15 pm - 10:30 pmONT-TYS

6h 15m1 stop

4:40 pm - 8:43 pmTYS-ONT

7h 03m1 stop

$305United Airlines

Find Deal

Fri, Sep 5 - Mon, Sep 8

6:50 pm - 9:58 amONT-TYS

12h 08m2 stops

4:40 pm - 8:43 pmTYS-ONT

7h 03m1 stop

$310United Airlines

Find Deal

Fri, Sep 5 - Mon, Sep 8

11:55 am - 11:44 pmONT-TYS

8h 49m1 stop

6:08 pm - 10:23 pmTYS-ONT

7h 15m1 stop

$334Delta

Find Deal

Tue, Sep 23 - Fri, Sep 26

10:29 pm - 9:00 amONT-TYS

7h 31m1 stop

3:48 pm - 10:12 pmTYS-ONT

9h 24m1 stop

$349Delta

Find Deal

Sun, Oct 12 - Fri, Oct 17

12:59 am - 10:24 pmONT-TYS

18h 25m2 stops

8:33 pm - 11:50 pmTYS-ONT

6h 17m1 stop

$424

Find Deal

Wed, Aug 20 - Sun, Aug 24

Delta flights from Ontario to Knoxville

Our best Delta deals on Ontario to Knoxville flight tickets

Delta

Sep 23

ONT11:55 amOntario

8h 49m

1 stop

TYS11:44 pmKnoxville McGhee Tyson

Sep 26

TYS6:08 pmKnoxville McGhee Tyson

7h 15m

1 stop

ONT10:23 pmOntario

$334

Find similar

Delta

Oct 12

ONT10:29 pmOntario

7h 31m

1 stop

TYS9:00 amKnoxville McGhee Tyson

Oct 17

TYS3:48 pmKnoxville McGhee Tyson

9h 24m

1 stop

ONT10:12 pmOntario

$349

Find similar

Delta

Oct 12

ONT10:29 pmOntario

7h 31m

1 stop

TYS9:00 amKnoxville McGhee Tyson

Oct 17

TYS3:48 pmKnoxville McGhee Tyson

10h 51m

2 stops

ONT11:39 pmOntario

$354

Find similar

American Airlines flights from Ontario to Knoxville

Our best American Airlines deals on Ontario to Knoxville flight tickets

American Airlines

Aug 22

ONT2:57 pmOntario

6h 22m

1 stop

TYS12:19 amKnoxville McGhee Tyson

Aug 25

TYS6:39 pmKnoxville McGhee Tyson

7h 09m

1 stop

ONT10:48 pmOntario

$289

Find similar

American Airlines

Aug 22

ONT11:59 pmOntario

8h 31m

1 stop

TYS11:30 amKnoxville McGhee Tyson

Aug 25

TYS5:30 amKnoxville McGhee Tyson

9h 02m

2 stops

ONT11:32 amOntario

$294

Find similar

American Airlines

Aug 22

ONT10:50 amOntario

9h 56m

2 stops

TYS11:46 pmKnoxville McGhee Tyson

Aug 25

TYS5:30 amKnoxville McGhee Tyson

9h 02m

2 stops

ONT11:32 amOntario

$299

Find similar

Fly from

Fly to

Route

Depart

Return

Price

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Wed 8/13

12:59 am-4:29 pm

1 stop12h 30m

Knoxville McGhee Tyson

Sun 8/17

5:25 pm-11:50 pm

1 stop9h 25m

$258

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Wed 8/20

12:59 am-7:41 pm

1 stop15h 42m

Knoxville McGhee Tyson

Sun 8/24

8:33 pm-11:50 pm

1 stop6h 17m

$265

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Wed 8/27

12:59 am-7:41 pm

1 stop15h 42m

Knoxville McGhee Tyson

Mon 9/1

7:10 pm-11:50 pm

1 stop7h 40m

$268

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Fri 8/22

2:57 pm-12:19 am

1 stop6h 22m

Knoxville McGhee Tyson

Mon 8/25

6:39 pm-10:48 pm

1 stop7h 09m

$289

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Fri 8/22

11:59 pm-11:30 am

1 stop8h 31m

Knoxville McGhee Tyson

Mon 8/25

5:30 am-11:32 am

2 stops9h 02m

$294

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Fri 9/5

1:15 pm-10:30 pm

1 stop6h 15m

Knoxville McGhee Tyson

Mon 9/8

4:40 pm-8:43 pm

1 stop7h 03m

$305

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Fri 9/5

6:50 pm-9:58 am

2 stops12h 08m

Knoxville McGhee Tyson

Mon 9/8

4:40 pm-8:43 pm

1 stop7h 03m

$310

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Tue 9/23

11:55 am-11:44 pm

1 stop8h 49m

Knoxville McGhee Tyson

Fri 9/26

6:08 pm-10:23 pm

1 stop7h 15m

$334

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Sun 10/12

10:29 pm-9:00 am

1 stop7h 31m

Knoxville McGhee Tyson

Fri 10/17

3:48 pm-10:12 pm

1 stop9h 24m

$349

OntarioKnoxville

ONT - TYS

ONTTYS

Ontario

Wed 8/20

12:59 am-10:24 pm

2 stops18h 25m

Knoxville McGhee Tyson

Sun 8/24

8:33 pm-11:50 pm

1 stop6h 17m

$424

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Knoxville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Layovers

What is the cheapest month to fly to Knoxville?

The month of November is, on average, the cheapest month to fly to Knoxville from Ontario, with most prices found around $340. If you aren’t able to travel during the month of November, then book flights to Knoxville from Ontario during January instead. Flights to Knoxville in January, while not as cheap as those in November, still average around $343.

What is the cheapest day to depart on your flight to Knoxville?

The cheapest day to depart from Ontario to Knoxville is on a Saturday. Travelers who choose to depart for Knoxville on a Saturday will often find tickets for as low as $387. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Ontario to Knoxville for around $552.

What is the cheapest time of day to depart on your flight to Knoxville?

In the afternoon is the cheapest time of day to fly from Ontario to Knoxville when you can find flight prices for as low as $399. Flying to Knoxville in the afternoon is an ideal time because this is during off-peak travel hours. In contrast, the most expensive time of day to depart to Knoxville is in the evening when prices are around $442.

How far in advance should I book a flight to Knoxville?

You are more likely to see cheaper flights to Knoxville from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Knoxville for around $395 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Knoxville from Ontario for as low as $297 on momondo.

How have Ontario to Knoxville flight prices changed over time?

As of July 2025, prices for Ontario to Knoxville flights are approximately 48% more expensive when compared to flights at the same time last year.

When to book flights from Ontario to Knoxville

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Knoxville according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Ontario to Knoxville (ONT to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Knoxville

Best Price Found	$127
Fastest flight time	6h 15m
Direct flights	None
Airports in Knoxville	1 airport

The best one-way flight to Knoxville from Ontario in the past 72 hours is $127. The best round-trip flight deal from Ontario to Knoxville found on momondo in the last 72 hours is $258.

The fastest flight from Ontario to Knoxville takes 6h 15m

There are no direct flights from Ontario to Knoxville. Popular non-direct route for this connection is Ontario Airport - Knoxville McGhee Tyson Airport.

There is 1 airport near Knoxville: Knoxville McGhee Tyson (TYS)

Search flight deals

How far is Ontario to Knoxville McGhee Tyson by plane?
A flight from Ontario to Knoxville McGhee Tyson will travel around 1902.5 mi. Typically, this will take 6h 15m by plane in normal conditions.
When did momondo last update prices for flights from Ontario Airport to Knoxville McGhee Tyson Airport?
Prices for flights from Ontario Airport to Knoxville McGhee Tyson Airport refresh daily.
How many operators does momondo search for flights from Ontario Airport to Knoxville McGhee Tyson Airport?
There are 4 operators available for flights from Ontario Airport to Knoxville McGhee Tyson Airport as of July 2025.
How old do you have to be to fly from Ontario Airport to Knoxville McGhee Tyson Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ontario Airport to Knoxville McGhee Tyson Airport.
What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?
The travel and health documents you'll need for your trip to Knoxville McGhee Tyson Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Knoxville McGhee Tyson Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
What is the most popular airline from Ontario to Knoxville?
momondo data reveals that the most frequently booked airline on the route from Ontario to Knoxville is American Airlines, representing 70% of all bookings. The subsequent popular airlines are Delta at 19%, United Airlines at 8%, and Frontier at 3%.

Best airlines flying from Ontario to Knoxville

Compare and see reviews for airlines that fly from Ontario to Knoxville with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $118	Free Cancellation	Rating 5.9 3,239 reviews	Search Frontier flights
American Airlines	PriceFrom $281	Free Cancellation	Rating 7.2 10,000 reviews	Search American Airlines flights
Delta	PriceFrom $288	Free Cancellation	Rating 8.0 7,981 reviews	Search Delta flights
United Airlines	PriceFrom $288	Free Cancellation	Rating 7.4 8,900 reviews	Search United Airlines flights

Pigeon Forge

Gatlinburg

Cherokee

Bryson City

Morristown

Corbin

Crossville

Maryville

Murphy

Newport

Alcoa

Lenoir City

Oak Ridge

Kodak

Dandridge

Clinton

Jefferson City

Rockford

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Knoxville?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Ontario to Knoxville. momondo saves you time and could save you money on your trip.

Can I find flights from Ontario to Knoxville with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to Knoxville from Ontario with this policy.

How can momondo help me find flights from Ontario to Knoxville?

Once all potential Ontario to Knoxville flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Ontario to Knoxville right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Knoxville, momondo offers a useful price alert feature which will track prices for flights to Knoxville from Ontario and alert you when they change.

An easier way to manage your Knoxville trip

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Cheap flights from Ontario to Knoxville from $127

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Knoxville departing on 10/4. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Our best Delta deals on Ontario to Knoxville flight tickets

American Airlines flights from Ontario to Knoxville

Our best American Airlines deals on Ontario to Knoxville flight tickets

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How to get the cheapest flight ticket from Ontario to Knoxville

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Knoxville?

What is the cheapest day to depart on your flight to Knoxville?

What is the cheapest time of day to depart on your flight to Knoxville?

How far in advance should I book a flight to Knoxville?

How have Ontario to Knoxville flight prices changed over time?

As of July 2025, prices for Ontario to Knoxville flights are approximately 48% more expensive when compared to flights at the same time last year.

What is the cheapest airline that flies from Ontario to Knoxville McGhee Tyson?

Frontier, Delta, and United Airlines are the most popular carriers operating from Ontario to Knoxville McGhee Tyson

What airlines fly to Knoxville?

Which airport is the most popular layover for flights between Ontario and Knoxville?

Atlanta (ATL) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Which layover airport offers the lowest fares from Ontario to Knoxville?

Flights via Dallas (DFW) offer the lowest average round-trip price of $338.

Which layover airport has the shortest travel time from Ontario to Knoxville?

Flights connecting via Dallas (DFW) have the shortest average one-way travel time: 6h 14m.

Which layover airport has the shortest connection time from Ontario to Knoxville?

Dallas (DFW) has the shortest average layover time for this route: 0h 56m.

When to book flights from Ontario to Knoxville

Cheap Ontario to Knoxville (ONT to TYS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Knoxville

Best Price Found

Fastest flight time

Direct flights

Airports in Knoxville

How far is Ontario to Knoxville McGhee Tyson by plane?

When did momondo last update prices for flights from Ontario Airport to Knoxville McGhee Tyson Airport?

How many operators does momondo search for flights from Ontario Airport to Knoxville McGhee Tyson Airport?

How old do you have to be to fly from Ontario Airport to Knoxville McGhee Tyson Airport?

What documentation or ID do you need to fly to Knoxville McGhee Tyson Airport?

What is the most popular airline from Ontario to Knoxville?

Best airlines flying from Ontario to Knoxville

Compare and see reviews for airlines that fly from Ontario to Knoxville with momondo

Traveling to a place near Knoxville?

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Knoxville?

Can I find flights from Ontario to Knoxville with flexible booking policies on momondo?

How can momondo help me find flights from Ontario to Knoxville?

I’m not ready to book a flight from Ontario to Knoxville right now. Can momondo alert me if prices change?

An easier way to manage your Knoxville trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to the United States

Airports servicing Tennessee