$186 Find Cheap Flights from Knoxville to Ontario - Compare and Save

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 10/22. 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

Save 21% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
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

Sun, Sep 13 - Tue, Sep 15
Multiple Airlines Logo
7:10 am - 9:25 pm
TYS
-
YYZ
14h 15m
1 stop
Multiple Airlines Logo
9:30 am - 10:04 am
YYZ
-
TYS
24h 34m
1 stop
$344Multiple Airlines
Sun, Sep 6 - Fri, Sep 18
Multiple Airlines Logo
9:30 am - 6:15 pm
TYS
-
YUL
8h 45m
1 stop
Multiple Airlines Logo
10:35 am - 3:01 pm
YUL
-
TYS
28h 26m
2 stops
$396Multiple Airlines
Mon, Oct 19 - Fri, Oct 23
Multiple Airlines Logo
7:00 am - 4:45 pm
TYS
-
YYZ
9h 45m
1 stop
Multiple Airlines Logo
4:55 pm - 11:32 am
YYZ
-
TYS
18h 37m
1 stop
$400Multiple Airlines
Fri, Aug 7 - Thu, Aug 13
Multiple Airlines Logo
9:26 am - 4:55 pm
TYS
-
YYZ
7h 29m
1 stop
Multiple Airlines Logo
6:30 am - 8:36 am
YYZ
-
TYS
26h 06m
1 stop
$412Multiple Airlines
Fri, Aug 7 - Thu, Aug 13
Multiple Airlines Logo
6:29 pm - 10:05 pm
TYS
-
YYZ
27h 36m
2 stops
Multiple Airlines Logo
6:30 am - 8:36 am
YYZ
-
TYS
26h 06m
1 stop
$423Multiple Airlines
Sun, Aug 23 - Wed, Aug 26
United Airlines Logo
7:00 am - 1:59 pm
TYS
-
YOW
6h 59m
1 stop
United Airlines Logo
10:37 am - 8:53 pm
YOW
-
TYS
10h 16m
1 stop
$603United Airlines
Sun, Aug 23 - Wed, Aug 26
United Airlines Logo
5:45 am - 9:56 am
TYS
-
YOW
4h 11m
1 stop
United Airlines Logo
6:00 am - 4:58 pm
YOW
-
TYS
10h 58m
3 stops
$613United Airlines
Sun, Aug 23 - Wed, Aug 26
Air Canada Logo
5:45 am - 9:56 am
TYS
-
YOW
4h 11m
1 stop
Air Canada Logo
12:15 pm - 8:24 pm
YOW
-
TYS
8h 09m
2 stops
$694Air Canada
Mon, Jul 27 - Mon, Aug 3
American Airlines Logo
6:30 pm - 2:55 pm
TYS
-
YOW
20h 25m
2 stops
American Airlines Logo
8:40 am - 10:23 pm
YOW
-
TYS
13h 43m
3 stops
$912American Airlines
Wed, Dec 2 - Sun, Dec 6
Air Canada Logo
7:00 am - 7:35 pm
TYS
-
YSB
12h 35m
2 stops
Air Canada Logo
10:35 am - 10:00 am
YSB
-
TYS
23h 25m
2 stops
$916Air 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.

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 round-trip 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 March, when tickets cost $0 (return) on average. On the other hand, the most expensive months are December and September, when the average cost of round-trip tickets is $793 and $739 respectively.

Good to know

Cheapest flight$186
Flight from Knoxville to Toronto

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 9927 reviews
7.3Comfort
7.7Boarding
8.1Crew
7.1Entertainment
6.7Food
Airline reviews

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

2.0 MediocreAnonymous, May 2026
TYS - IAD
Read more United Airlines reviews

Our flight to Rome, Italy was cancelled the day of and we were never informed. We only found out because I was trying to get into my husbands account and called to get his account number. Had to pay more for worse seating on another airline.

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

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.

Not the fault of United—weather, reroute around weather, time sitting on tarmac, arrived couple hours late, too late for train into city necessitating a much pricier cab but weather…can’t be helped.

I had no checked baggage but was required to hand over carry on baggage at the door of the plane. There was a lot of overboard space in the plane and I was one of the last ones. I ran to get my carry on but it was gone. I was given back at the plane door in Toronto, so the wait was not as long as it would have been at the carousel.

Not to have gotten delayed by 2+ hours for the fourth straight American flight. They're the worst.

Flight was late and boarding was confusing because gate changed and I didn’t get a notification

Did not get any refreshments. Crew was very nice but limited. Small seats

Wish a flight with more than 2 hours with some snack rather than just cookie/biscuit.

Was a normal flight but it was delayed, and there wasn't an explanation.

I didn’t like anything, being platinum pro get you absolutely nowhere and does not increase the customer service treatment whatsoever anymore. My flight was canceled and they put me on a flight eight hours later that would’ve got me back in the middle of the night. They could’ve easily move me up to an hour Prior on an earlier flight. My second flight was unreasonable to take, the third flight was also canceled due to mechanical issues like the first flight. I don’t know what’s going on with American, but they are falling apart, after seven flight changes I finally got home, Unreasonable.

This was a horrible American Airlines experience, and it discourages me from flying with them again. It may have stemmed from a mechanical delay, but it appeared that the team was unprepared to respond to the delay. After boarding, we waited an hour before finally taking off. After landing at our destination, we waited an additional hour on the tarmac waiting for a gate (at 8:00pm) to be assigned and cleared. The flight crew did their best, but they were clearly tired and also ready to be done for the day. Because of the delay, I missed a connecting flight. It was a very poor experience.

Boarding was disorganized and delayed because they overbooked and wanted people to give up seats then further delayed due to an issue with the plane. They did not load my bag and it took a day for them to return it. Flight attendant was lovely and the only positive thing about this trip.

Fantastic! If it had not been for a check-in agent in Knoxville I may have not gotten my passes on British Airways. I couldn’t check-in online because British Airways had messed us the info on my tickets to London & Inverness. AA’s was great! British Airways was a continuous series of delays and frustrations.

Wheelchair was waiting for me,changed to a better seat which was great as it's hard for me to walk

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

Information on your arrival and departure airports