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TYS - ONT

$90 Find cheap flights from Knoxville to Ontario

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Knoxville to Ontario departing on 5/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sat 6/15
Sat 6/22

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Ontario, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Knoxville to Ontario, as well as popular online travel agencies
In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

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Cheap flight deals from Knoxville to Ontario (TYS-ONT)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Knoxville to Ontario that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
5:40 pm - 12:15 pmTYS-ONT
21h 35m1 stop
1:32 pm - 5:17 pmONT-TYS
24h 45m1 stop
$190Frontier
Find Deal
Sat, Aug 17 - Tue, Aug 20
4:01 pm - 11:59 pmTYS-ONT
10h 58m1 stop
10:23 pm - 4:59 pmONT-TYS
15h 36m1 stop
$218Frontier
Find Deal
Fri, May 31 - Fri, Jun 7
10:40 pm - 11:59 pmTYS-ONT
28h 19m1 stop
12:39 am - 5:15 pmONT-TYS
13h 36m1 stop
$220Frontier
Find Deal
Mon, Jul 8 - Fri, Jul 19
5:10 am - 11:53 amTYS-ONT
9h 43m2 stops
2:39 pm - 12:19 amONT-TYS
6h 40m1 stop
$232American Airlines
Find Deal
Sat, Aug 17 - Tue, Aug 20
5:10 am - 11:53 amTYS-ONT
9h 43m2 stops
12:46 pm - 12:19 amONT-TYS
8h 33m2 stops
$237American Airlines
Find Deal
Sat, Aug 17 - Tue, Aug 20
5:25 am - 10:10 amTYS-ONT
7h 45m1 stop
10:00 pm - 9:17 amONT-TYS
8h 17m1 stop
$313Delta
Find Deal
Tue, Jul 9 - Mon, Jul 15
3:49 pm - 8:06 pmTYS-ONT
7h 17m1 stop
12:50 pm - 11:51 pmONT-TYS
8h 01m1 stop
$348Delta
Find Deal
Wed, May 29 - Wed, Jun 5
4:45 pm - 8:48 pmTYS-ONT
7h 03m1 stop
6:00 am - 3:48 pmONT-TYS
6h 48m1 stop
$428United Airlines
Find Deal
Thu, Jul 11 - Wed, Jul 17
4:37 pm - 8:48 pmTYS-ONT
7h 11m1 stop
5:15 am - 3:41 pmONT-TYS
7h 26m1 stop
$473United Airlines
Find Deal
Tue, Jun 4 - Tue, Jun 11
2:29 pm - 11:59 pmTYS-ONT
12h 30m2 stops
4:28 pm - 10:20 amONT-TYS
14h 52m2 stops
$723Alaska Airlines
Find Deal
Thu, Aug 15 - Thu, Sep 19

Flights from Knoxville to Ontario - Travel Insights & Trends

Get data-powered insights and trends into flights from Knoxville to Ontario to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Knoxville to Ontario?

The average price of all flights from Knoxville to Ontario clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Knoxville to Ontario, look for departures on Tuesdays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from Ontario, Wednesday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Knoxville to Ontario?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Knoxville to Ontario, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Knoxville to Ontario is February, where tickets cost $344 on average. On the other hand, the most expensive months are May and December, where the average cost of tickets is $953 and $568 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Knoxville to Ontario, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Knoxville to Ontario, you should book around 5 days before departure. For the absolute cheapest price, our data suggests you should book 39 days before departure.

Which airlines provide the cheapest flights from Knoxville to Ontario?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the past 3 days, the cheapest one-way tickets to Ontario from Knoxville were found on Frontier ($90) and Delta ($169), and the lowest round-trip tickets were found on Frontier ($190) and American Airlines ($232).

Good to know

Low season

April

High season

May

Cheapest flight

$90
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 87% increase in price.
Flight from Knoxville to Ontario

When to book flights from Knoxville to Ontario

Are your dates flexible? Find out the best times to travel from Knoxville to Ontario based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Knoxville to Ontario

  • What is the cheapest flight from Knoxville to Ontario?

    In the last 3 days, the lowest price for a flight from Knoxville to Ontario was $90 for a one-way ticket and $190 for a round-trip.

  • Do I need a passport to fly between Knoxville and Ontario?

    A passport is not required to fly from Knoxville to Ontario.

  • Which aircraft models fly most regularly from Knoxville to Ontario?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Knoxville to Ontario?

    SkyTeam, oneworld, and Star Alliance are the airline alliances operating flights between Knoxville and Ontario, with oneworld being the most commonly used for this route.

  • Which is the best airline for flights from Knoxville to Ontario, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Knoxville to Ontario are Delta and United Airlines. With an average price for the route of $508 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $488 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Knoxville to Ontario?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Knoxville to Ontario.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Knoxville to Ontario?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Knoxville is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Knoxville to Ontario?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Knoxville with another airline. Booking your flights between Knoxville and ONT can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Knoxville to Ontario?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Knoxville up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 4 airlines serving from Knoxville to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Knoxville to Ontario. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Knoxville to Ontario? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10673 reviews
7.4Food
8.6Crew
7.9Comfort
8.2Boarding
8.0Entertainment
Airline reviews

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

8.0 ExcellentCynthia, Apr 2024TYS - ATL
Read more about Delta reviews

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Crew was not friendly when I went to request a seat change.

Really impressive staff at airport and on plane, especially given how busy it was

Check in etc was very good. As for on the plane, it was like flying in a freezer. It was so cold, i have flown for years and never been so cold on a plane. Staff on board said its always cold when flying which is a load of rubbish. They wouldnt put any heating on and now i have the flu because of this .

I’ve had a couple flights this week on United that were delayed by an hour or more

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

The WiFi didn’t work and the seats are too close together. Very uncomfortable.

So so. Terrible aircraft choice for that leg of the flight.

delay several times and wait extra long to board. no entertainment service because there are problem for some rows. always encounter some delays for the last flight of the day.

On time every leg of the journey and exceptional staff at counter, gate, and on board. I haven’t travelled in US for a long time and was genuinely surprised how pleasant this was.

Fight crew was not very attentive and the bastions were gross!

Our flight was great we left Kona earlier and got into LAX almost an 1hour earlier as well. LAX AA is in repair so to get out and found our bus to get pick up was a bit confusing.

Plane was good but was delayed. probably not AA fault but caused a 1 hour delay. Seating was cramped.

5 hour flight - full flight - not enough room to use my computer - slightly delayed - Admirals club was excellent quality food, drink made up for flight seating. No food offerred on flight, you ahd to prebook.

We experience delays on departure and connecting flights resulting in 14 hour to our next departure. We were accommodated with a night's stay but was only provided a 12 dollar meals accommodation. The airlines rules state.at least 50 dollars. In any case, it can not make up for the whole day missed on our vacation in Sydney Australia.

I can say I will not be taking this airline again any time soon. Seat were uncomfortable and too tight. Lack of chair screen and little overhead space.

Plane felt so crowded and tightly packed. The chair itself was not comfortable.

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

Poor availability of food. Cold cabin temperature. Extremely long waiting time for a flight attendant to respond to a call button signal.

2.5h delay due to unruly passenger in first class. Had to be removed from the flight. No food unless pre ordered. Didn't know we would need it because of delay.

Check in online was easy. Seats aren’t very comfortable

Fecal matter in seat back pocket. Presumably from a kids diaper.

Worst airline to travel with. They treat you like a prisoner in a jailhouse barking out orders and threats. Nickle and dime you to the same price or higher than a respectable airline like one of the big 3 . Might as well fly with standard airlines

Well I mean u get what u pay for so 🤷‍♂️

Over an hour delay in departure but I was notified beforehand. Another delay on tarmac upon arrival at LGA. We ended up departing the plane almost 2 hours later than expected

I fly Frontier because it’s affordable. I understand that the seats are tight and not the most comfortable…but that’s part of it. The problem with this flight was that there was a group of travelers directly behind me at the back of the plane who were ridiculously loud and obnoxious the entire flight. I’m pretty sure they were drunk and I could periodically smell an odd odor that I believe was one of them using a smokeless vape pen. The stewards had to remind them to keep quiet during the pre-flight instruction, but that was it. They never said another thing to them for the rest of the flight. It was a miserable.

I checked a bag because it was $5 less than carry on. They managed to lose my bag on a 2.5 hr direct flight! Frontier has no airport staff at baggage claim to help. As soon as I got home around 11 pm I tried to use their online system to file the claim for lost bag - system wouldn't take the # on my baggage claim ticket - said it was not the correct number. Also said that I had not checked a bag, which wasn't true - even my online boarding pass showed that I had checked a bag. Wasted about an hour on that process with no luck. Tried again in the morning - same thing. So tried online chat with Frontier bot - waited 35-40" twice to be connected to a baggage agent and it never happened. Eventually drove to PDX after work and waited 2 hrs for the Frontier ticket agents to arrive prior to the next Frontier flight out of PDX and FINALLY got some help from one of them, to take me to lost luggage area where I was able to retrive my bag. Probably took 4-5 hrs. of my time and endless frustration to get my bag. This was my first -- and LAST -- experience flying Frontier Airlines. Check-in was also extremely difficult and time consuming. The flight itself (and staff) were fine but everything else about the experience was a total disaster! The fact that Frontier literally has NO WAY to connect to a human voice for customer service (in this case for lost luggage) is the WORST!!!!!

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Book cheap flights from Knoxville to Ontario

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Knoxville to Ontario found on KAYAK in the last 72 hours.
5/29Wed
1 stopFrontier
9h 28mTYS-ONT
$90
5/31Fri
1 stopFrontier
10h 58mTYS-ONT
$106
7/13Sat
1 stopFrontier
8h 50mTYS-ONT
$110
6/17Mon
1 stopFrontier
11h 46mTYS-ONT
$115
5/30Thu
1 stopDelta
8h 27mTYS-ONT
$169
7/14Sun
1 stopAmerican Airlines
8h 24mTYS-ONT
$304
7/15Mon
2 stopsUnited Airlines
22h 30mTYS-ONT
$322
6/25Tue
1 stopUnited Airlines
27h 51mTYS-ONT
$343
6/3Mon
2 stopsAmerican Airlines
10h 59mTYS-ONT
$354
6/17Mon
2 stopsAlaska Airlines
12h 29mTYS-ONT
$434

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Last minute flights from Knoxville to Ontario

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Knoxville to Ontario that are departing in the next 10 days.
5/20Mon
multi-stopFrontier
8h 21mTYS-ONT
5/24Fri
multi-stopFrontier
12h 09mONT-TYS
$249
5/20Mon
multi-stopFrontier
8h 21mTYS-ONT
5/28Tue
multi-stopFrontier
12h 32mONT-TYS
$276
5/20Mon
multi-stopDelta
6h 37mTYS-ONT
5/29Wed
multi-stopDelta
6h 03mONT-TYS
$413
5/17Fri
multi-stopDelta
6h 37mTYS-ONT
5/20Mon
multi-stopDelta
8h 01mONT-TYS
$533
5/21Tue
multi-stopUnited Airlines
7h 43mTYS-ONT
5/25Sat
multi-stopUnited Airlines
7h 26mONT-TYS
$664
5/17Fri
multi-stopUnited Airlines
7h 43mTYS-ONT
5/20Mon
multi-stopUnited Airlines
28h 32mONT-TYS
$753
5/17Fri
multi-stopAmerican Airlines
7h 16mTYS-ONT
5/20Mon
multi-stopAmerican Airlines
7h 13mONT-TYS
$836
5/17Fri
multi-stopAmerican Airlines
7h 16mTYS-ONT
5/20Mon
multi-stopAmerican Airlines
10h 02mONT-TYS
$841
5/17Fri
multi-stopAlaska Airlines
12h 28mTYS-ONT
5/20Mon
multi-stopAlaska Airlines
11h 55mONT-TYS
$898
5/21Tue
multi-stopAlaska Airlines
14h 29mTYS-ONT
5/25Sat
multi-stopAlaska Airlines
13h 41mONT-TYS
$1,158

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Knoxville - Ontario Flights

Departure:

Knoxville (undefined)United States

Destination:

Ontario (ONT)United States

Return flight deals:

Ontario - Knoxville

Cabin classes: