$149 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 5/14. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Ontario

 
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
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Flight Deals

Book Cheap Knoxville to Ontario Plane Tickets

 
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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Knoxville to Ontario

Mi, Jun 3 - Fr, Jun 5
United Airlines Logo
5:45 am - 6:48 pm
TYS
-
YOW
13h 03m
1 stop
United Airlines Logo
5:20 pm - 12:30 am
YOW
-
TYS
7h 10m
1 stop
$341United Airlines
Sa, Apr 18 - Sa, Apr 25
United Airlines Logo
7:00 am - 9:35 pm
TYS
-
YOW
14h 35m
1 stop
United Airlines Logo
6:00 am - 3:09 pm
YOW
-
TYS
9h 09m
1 stop
$342United Airlines
So, Mai 31 - Mi, Jun 3
Multiple Airlines Logo
7:30 am - 6:15 pm
TYS
-
YUL
10h 45m
1 stop
Multiple Airlines Logo
6:45 am - 5:58 pm
YUL
-
TYS
11h 13m
2 stops
$345Multiple Airlines
Sa, Apr 18 - Sa, Apr 25
United Airlines Logo
7:00 am - 5:07 pm
TYS
-
YOW
10h 07m
1 stop
United Airlines Logo
6:00 am - 10:34 pm
YOW
-
TYS
16h 34m
3 stops
$352United Airlines
So, Mai 31 - Fr, Jun 5
Multiple Airlines Logo
7:30 am - 6:15 pm
TYS
-
YUL
10h 45m
1 stop
Multiple Airlines Logo
6:30 am - 4:40 pm
YUL
-
TYS
10h 10m
2 stops
$352Multiple Airlines
Sa, Mai 30 - Mi, Jun 3
Multiple Airlines Logo
7:10 am - 2:08 pm
TYS
-
YUL
6h 58m
1 stop
Multiple Airlines Logo
6:45 am - 2:57 pm
YUL
-
TYS
32h 12m
2 stops
$357Multiple Airlines
Mo, Apr 13 - Fr, Apr 17
United Airlines Logo
7:20 pm - 11:54 pm
TYS
-
YOW
4h 34m
1 stop
United Airlines Logo
5:25 pm - 10:34 pm
YOW
-
TYS
5h 09m
1 stop
$428United Airlines
Di, Jun 9 - Mi, Jun 10
Air Canada Logo
5:45 am - 9:51 pm
TYS
-
YOW
16h 06m
2 stops
Air Canada Logo
5:05 am - 2:27 pm
YOW
-
TYS
9h 22m
2 stops
$436Air Canada
Mi, Jun 3 - Fr, Jun 5
Air Canada Logo
5:45 am - 2:17 pm
TYS
-
YOW
8h 32m
1 stop
Air Canada Logo
7:00 am - 8:56 pm
YOW
-
TYS
13h 56m
2 stops
$454Air Canada
Mi, Jun 3 - Fr, Jun 5
Air Canada Logo
5:45 am - 1:45 pm
TYS
-
YSB
8h 00m
2 stops
Air Canada Logo
9:45 am - 8:56 pm
YSB
-
TYS
11h 11m
2 stops
$814Air Canada
Booking Insights

KAYAK's insights & trends for Knoxville to Ontario flights

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.

How much is a round-trip flight from Knoxville to Region of Ontario?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Knoxville to Region of Ontario departing in May.

Good to know

Cheapest flight$149
Flight from Knoxville to Ottawa

FAQs - booking Ontario flights

  • 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 from Knoxville to Ontario 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 from Knoxville to Ontario with an airline and back with another airline.

  • 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 from Knoxville to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying 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.
7.4
United AirlinesOverall score based on 9533 reviews
7.1Entertainment
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

8.0 ExcellentLaba, Mar 2026
DEN - YEG
Read more United Airlines reviews

ticket agent lady wás very helpful , she arranged wheel chair for my elderly mother

Entertainment kept turning itself off. Gave up on watching a movie.

Wifi took a while to kick in and we had a maintenance issue that took over 40 mins at the gate in Washington before pulling back

I wish there were outlets to charge my iPhone. The crew was great; we had a female pilot who was great with explaining what was happening and delays,

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

Not United Airlines' fault. It's ORL airport's fault.

United overall experience is great these days. Airport experience was very organized. Staff on flight were great. App and information as good as it gets.

Very nice flight love the small aircraft. We had a wonderful flight attendant. Nice to see someone that really enjoys her job. Don't have her name but had a southern accent.

Even though we were delayed, we were able to make our connection

Seats in waiting area and on plane hard as rock. Fast internet on the flight was great! Crew was kind.

Moved to earlier flight which unexpectedly had maintenance issues initially indicated as quick fix to ultimately plane changes. Moved back to original flight, also delayed. In all cases customer updates and communication very unclear, no updates on drivers for delays.

Flight was delayed. No urgency by American Airlines team to assist those with connecting flights. It was basically you are on your own to run through the terminals to try and make your connection. Thanks, Mary

I have never been assaulted they way I was today in Charlotte - shame on American

One of our group members was struggling to walk. In Charlotte we asked for a wheelchair and she was accompanied by Desmond. I was impressed by his patience and attention. In Boston she received the same service. I didn’t get the name of the helper but she went above and beyond in assisting us. A great AA service

Better snacks but flight and crew were amazing on this flight

Found that the plane used for this short flight is smaller and therefore the seats are really squeezed tight.

It was the most un-special flight experience in my life.

Plane was super cold. No entertainment unless you were with mileage program Getting off the plane was super slow

Flight was on-time, boarding was flawless and the crew was friendly.

The staff are very, very professional. It's what flying should feel like.

Everything you need to know for your flight from Knoxville to Ontario

Information on your arrival and departure airports