C$ 138 Find Cheap Flights from Louisville 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 Louisville to Ontario departing on 6/10. 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

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 Louisville 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 Louisville to Ontario, as well as popular online travel agencies
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Best Ontario Flight Deals from Louisville

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Ottawa
Ottawa1 stopC$ 508
Ottawa
Ottawa1 stopC$ 508

Cheap Flights from Louisville to Ontario

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Louisville 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 Louisville to Ontario

Fri, 19 Sep - Mon, 22 Sep
Logo
8:23 a.m. - 9:21 p.m.SDF-YYZ
12h 58m2 stops
Logo
7:45 a.m. - 6:02 p.m.YYZ-SDF
10h 17m1 stop
C$ 373
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Sun, 26 Oct - Tue, 28 Oct
Logo
6:58 p.m. - 2:40 p.m.SDF-YYZ
19h 42m1 stop
Logo
11:15 a.m. - 4:36 p.m.YYZ-SDF
29h 21m1 stop
C$ 399
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Sat, 11 Oct - Sat, 18 Oct
American Airlines Logo
5:53 p.m. - 10:59 a.m.SDF-YYZ
17h 06m1 stop
American Airlines Logo
3:10 p.m. - 11:03 p.m.YYZ-SDF
7h 53m1 stop
C$ 511American Airlines
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Wed, 8 Oct - Sat, 18 Oct
United Airlines Logo
8:45 a.m. - 5:26 p.m.SDF-YUL
8h 41m1 stop
United Airlines Logo
9:45 a.m. - 6:33 p.m.YUL-SDF
8h 48m1 stop
C$ 564United Airlines
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Wed, 8 Oct - Sat, 18 Oct
United Airlines Logo
8:45 a.m. - 5:26 p.m.SDF-YUL
8h 41m1 stop
United Airlines Logo
8:20 a.m. - 6:33 p.m.YUL-SDF
10h 13m1 stop
C$ 591United Airlines
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Sat, 11 Oct - Sat, 18 Oct
American Airlines Logo
10:01 a.m. - 4:34 p.m.SDF-YYZ
6h 33m2 stops
American Airlines Logo
3:10 p.m. - 11:03 p.m.YYZ-SDF
7h 53m1 stop
C$ 698American Airlines
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Wed, 10 Sep - Tue, 16 Sep
Delta Logo
10:24 a.m. - 9:47 p.m.SDF-YUL
11h 23m2 stops
Delta Logo
7:00 a.m. - 6:36 p.m.YUL-SDF
11h 36m2 stops
C$ 865Delta
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Fri, 5 Sep - Mon, 8 Sep
Delta Logo
10:24 a.m. - 9:48 p.m.SDF-YUL
11h 24m2 stops
Delta Logo
6:00 a.m. - 3:44 p.m.YUL-SDF
9h 44m1 stop
C$ 909Delta
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Mon, 22 Sep - Thu, 25 Sep
WestJet Logo
7:10 a.m. - 4:27 p.m.SDF-YUL
33h 17m2 stops
WestJet Logo
6:45 a.m. - 10:46 p.m.YUL-SDF
16h 01m2 stops
C$ 1,248WestJet
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Mon, 22 Sep - Thu, 25 Sep
WestJet Logo
6:00 a.m. - 4:27 p.m.SDF-YUL
34h 27m2 stops
WestJet Logo
7:00 a.m. - 10:00 a.m.YUL-SDF
27h 00m2 stops
C$ 1,275WestJet
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Booking Insights

KAYAK's insights & trends for Louisville to Ontario flights

Get data-powered insights and trends into flights from Louisville 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 Louisville to Region of Ontario?

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

The average price of all round-trip flights from Louisville to Ontario clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Ontario on a Friday, as we generally find the cheapest rates on that day for this route. On the other hand, Wednesday is the most expensive day to fly from Louisville to Ontario. For your return ticket, we recommend flying on a Tuesday and avoiding Thursdays for the best deals.

Find deals

Good to know

Low seasonNovember
Cheapest flightC$ 138
Best time to beat the crowds (38% less expensive on average)
Most popular time to fly and prices are also 16% lower on average.
Flight from Louisville to Toronto

FAQs - booking Ontario flights

  • How does KAYAK find such low prices on flights from Louisville 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 Louisville to Ontario.

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

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

  • What is the Hacker Fare option on flights from Louisville 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 Louisville 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 Louisville 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 Louisville to Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Ontario?

    The cheapest time of day to fly to Ontario is generally in the evening, when round-trip flights cost C$ 474 on average. Morning departures are around 18% more expensive than evening flights, on average. The most expensive time of day to fly to Ontario is generally in the morning, which is peak travel time and where the average cost of a ticket is C$ 561.

Reviews of the top airline flying from Louisville to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Louisville 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 Louisville 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.
7.2
WestJetOverall score based on 3017 reviews
7.9Crew
7.4Boarding
6.1Entertainment
6.2Food
7.0Comfort
Airline reviews

Smooth flight Staff were courteous and welcoming upon entering and exiting the plane Pilot and crew provided frequent updates Leg space was not pleasant but manageable

10.0 ExcellentAnonymous, Aug 2025PUJ - YYZ
Read more WestJet reviews

Smooth flight Staff were courteous and welcoming upon entering and exiting the plane Pilot and crew provided frequent updates Leg space was not pleasant but manageable

Everything was good except I was a bit disappointed that I had to pay US $150 for bags.

They cancelled and moved my flight with no email or text or any other notice. I discovered this only when I attempted to check in for my flight. Actual flying experience was above average.

They were on time and everything went as expected. The only thing that could be better was they didn't wait for us to get through customs to pick up our luggage off the carousel. An employee picked it up and was shoving it together with others onto a cart. Later we found one of our luggage was slightly bent.

Flight itself good .Landing at terminal3 and connections to terminal1,it is connections nightmare,specially for disable person

The seats very Uncomfortable, no meal and no entertainment for a 4Hours flight. Smooth Flight, Great Take off and landing. Superb crew!

The flight attendants were super! They created a cosy and warm flight atmosphere!

West Jet flight was cancelled and I was not notified. I found out when I tried to check in on-line. Spent 4 hours on the phone with West Jet and Just Fly trying to figure what happened.

It was good, flight was on time, boarding was smooth and done in zones, food was good too but there was no form of entertainment. Luggage’s were intact. So an overall good flight

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

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

Information on your arrival and departure airports

Louisville (SDF)

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