$110 Find Cheap Flights from Ontario to Kentucky

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Kentucky departing on 9/9. 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 Kentucky

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Kentucky, 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 Ontario to Kentucky, as well as popular online travel agencies
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Cheap Flights from Ontario to Kentucky

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Louisville
Louisville1 stop$364
Lexington
Lexington1 stop$320
Paducah
Paducah1 stop$647
Nashville
Nashville1 stop$299
Louisville
Louisville1 stop$364
Lexington
Lexington1 stop$320
Paducah
Paducah1 stop$647
Nashville
Nashville1 stop$299

Book Cheap Ontario to Kentucky Plane Tickets

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

Wed, Sep 23 - Wed, Sep 30
Frontier Logo
2:58 pm - 8:21 pm
ONT
-
CVG
26h 23m
1 stop
Frontier Logo
12:25 pm - 10:43 am
CVG
-
ONT
25h 18m
1 stop
$282Frontier
Wed, Jul 15 - Wed, Jul 22
Frontier Logo
1:28 pm - 7:48 pm
ONT
-
CVG
27h 20m
1 stop
Frontier Logo
9:00 pm - 7:53 pm
CVG
-
ONT
25h 53m
1 stop
$283Frontier
Fri, Sep 4 - Tue, Sep 8
Delta Logo
10:59 pm - 9:24 am
ONT
-
LEX
7h 25m
1 stop
Delta Logo
7:10 am - 11:04 am
LEX
-
ONT
6h 54m
1 stop
$340Delta
Thu, Aug 6 - Sat, Aug 8
American Airlines Logo
8:01 pm - 11:15 am
ONT
-
LEX
12h 14m
2 stops
American Airlines Logo
4:57 pm - 10:04 pm
LEX
-
ONT
8h 07m
1 stop
$354American Airlines
Wed, Sep 9 - Wed, Sep 16
American Airlines Logo
12:35 pm - 11:18 pm
ONT
-
TYS
7h 43m
1 stop
American Airlines Logo
6:00 am - 11:48 am
TYS
-
ONT
8h 48m
1 stop
$359American Airlines
Sat, Aug 15 - Sat, Aug 22
United Airlines Logo
5:00 am - 2:29 pm
ONT
-
SDF
6h 29m
1 stop
United Airlines Logo
9:00 am - 6:16 pm
SDF
-
ONT
12h 16m
2 stops
$382United Airlines
Wed, May 27 - Sun, May 31
Delta Logo
10:00 pm - 9:31 am
ONT
-
TRI
8h 31m
1 stop
Delta Logo
3:50 pm - 9:48 pm
TRI
-
ONT
8h 58m
1 stop
$399Delta
Mon, Jun 29 - Tue, Jul 14
Southwest Logo
10:50 am - 12:25 am
ONT
-
SDF
10h 35m
2 stops
Southwest Logo
10:55 am - 2:05 pm
SDF
-
ONT
6h 10m
1 stop
$409Southwest
Wed, Aug 26 - Sun, Aug 30
Southwest Logo
9:40 am - 9:30 pm
ONT
-
SDF
8h 50m
2 stops
Southwest Logo
5:40 am - 11:45 am
SDF
-
ONT
9h 05m
2 stops
$414Southwest
Sat, Aug 29 - Tue, Sep 1
United Airlines Logo
1:18 pm - 10:38 pm
ONT
-
LEX
6h 20m
1 stop
United Airlines Logo
9:15 am - 12:50 pm
LEX
-
ONT
6h 35m
1 stop
$431United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Kentucky flights

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

How much is a round-trip flight from Ontario to Kentucky?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Kentucky, 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 Ontario to Kentucky is June, when tickets cost $75 (return) on average. On the other hand, the most expensive months are November and February, when the average cost of round-trip tickets is $373 and $359 respectively.

Good to know

Low seasonJanuary
Cheapest flight$110
Best time to beat the crowds but there is an average 41% increase in price.
Most popular time to fly with an average 2% increase in price.
Flight from Ontario to Nashville

FAQs - booking Kentucky flights

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

    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 Ontario to Kentucky.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Ontario to Kentucky 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 Ontario to Kentucky?

    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 Ontario to Kentucky 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 Ontario to Kentucky?

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

Reviews of the top 4 airlines serving from Ontario to Kentucky

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Kentucky. 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 Ontario to Kentucky? 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
SouthwestOverall score based on 4292 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.5Entertainment
7.0Food
Airline reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

10.0 Excellentlarry, Apr 2026
LGB - PHX
Read more Southwest reviews

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

Delayed flight, lack of information, boarding process is a mess as is the carryon luggage causing issues when leaving the plane….just a poor experience.

Comfortable. Easy. No problems. Just wish they had gf options for snacks.

The crew was very kind and made going to Hawaii relaxing and fun to look forward to! Thank you Southwest for a pleasant flight!

Terrible. Even though there’s assigned seating now, they are still the slowest boarding airline of anyone.

It was good from LAX to Phoenix, But the connection in Phoenix to Tulsa was not that great. The staff on both flights were great. The choice of free entertainment was ok nothing to brag about. The 45 min delay because of some electrical issue wasn't great from Phoenix to Tulsa. We sat there with hardly any air, The seat I had was between windows so the side of the plane pushed in on you. My being a bigger man it then made the seating area uncomfortable. The seats on the plane had no power to connect to recharge your phone or anything. I would recommend that they should look into a slot or clamp to hold your phone to enjoy while watching the entertainment choices hands-free. Also make it possible to raise the inner seat by the window be able to raise the arm rest up to make more room for larger people to set more comfortably. I would also say other then that stop price gouging the airfare or nickel and diming everything. Not fair for people having to fly for emergencies and be paying for higher prices due to the season or holidays. Your making your money either way and the cost of flying is still going to be the same regardless if there's 100 people or 200 people.

Southwest was greaat! The most expensive but the least upsetting for those we were flying to see.

Boarding was easy. The seats are small and fairly uncomfortable

The problem with the seat assignments is that there were a lot of rows in the front that were empty but my row at the back was full. Just not so pleasant.

Good but I prefer choose your own seat. With the new assigned seats they should board from the back I see no advantage to this new boarding. Just like every other airline

While they turned off most cabin lights to allow people to sleep, I was bothered by how bright the side lights still were. It was still quite bright for me in a window seat, when I wish I could have slept!

Generally on time departures and arrivals, clean planes, sky miles membership provides great benefits (complimentary upgrades, etc).

N Everything was perfect from boarding to assistance to baggage in Tampa

Loved the crew! Sucks that we went from 1 hour and 8 minute layover to a 3 hour layover. But weather sucks like that.

Fast, lovely scenery, great info on the Delta flight screen about landmarks we were flying over. Great landing!

Long flight but comfortable and not freezing as I have experienced on Hawaiian flights to the islands. They gave us blankets just in case. Nice touch.

I took seat 15A in anticipation of window seat, there is no window.

Flight late, the waited for a long time for “personal” to arrive at gate to dock the plane in Rochester. So annoying. This flight was expected, why aren’t personel available for the jet bridge?

My recent experience was excellent on Delta! I flew with Delta Comfort and I was really comfortable in my seat. I enjoyed the in-flight service. The flight attendants were so friendly and hospitable. I love the snack on the flight as well. This was my first time flying on Delta and I will definitely consider flying with them again.

My flight was canceled on Sunday. Rebooking took three hours. Had to pay for accommodations another night. New flight was delayed for 5 hours, all that was sent was a 12 dollar food voucher, which doesn’t tell you how to use it. Then when we landed we had to sit on the plane for an hour before we could get off.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No screens or meal options. Freezing cold. Dirty seats. Left late.

Booked through Kayak Business, had a seat in middle and towards back due to booking rate, not comfortable.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

It was a red-eye, but the flight felt surprisingly quick. The seats were very comfortable, and that made resting much easier. I also want to thank the gentleman seated next to me, who graciously moved so my mom could sit beside me. We slept almost the entire way. The cabin crew was respectful in not disturbing us, while also being courteous and professional throughout. Thank you, United.

Boarding was again a "free for all". We were boarding group 4, and almost the entire plane was able to board before us. It's a shame that someone who follows the rules, gets the short end of the stick. Not fair.

It was perfect! I've never flown with United before, but I definitely will in the future

I had a cancelled flight because of technical issues going to my destination, and a delayed flight coming home. All told it wasn’t a total bust.

They delayed the flight from 9:00 to 11:55 At 11:45 they canceled the flight. I paid a premium price for the tickets with poor service

My flight was canceled a few hours before boarding. I was rebooked on Copa airlines and missed an important meeting .

Left early arrived early..right amount of talking from pilots..of course had to love the biscuit and water!

Boarding gate at LAX was too crowded—two gates next to one another

On time departure and early arrival. Flight attendant very nice.

The SFO Lounge crew were amazing. The bartender Faris was great. Thanks!

Was not able to do a online check-in because the American Airlines system doesn't store our visa or other passport information, allowing us to have a trouble-free check-in. We were forced to have to check-in at the counter which Changes are upgrade status given that we were not able to check in much earlier.

Good flight, seated and had a water within 5 minutes. Crew was hospitable.

We left at 1030 am pacific from LA and supposed to land at 7 pm Eastern in NY. They made a detour, stopped in Philadelphia and didn’t land till 1130 PM Eastern!!! Worst flight experience with no pilot communication with no explanation as to what was going on. Everyone was very frustrated to say the least.

Flight boarded from Gate 159B, the farthest gate in the LAX Bradley Terminal. While the flight operated on time, the first class cabin attendant made no recognition of my being an Advantage Executive Platinum member.

The flight itself was excellent but the gate attendant made me check my carryon since she said it was an inch too big. I’ve had no problems with this carryon on recent flights on Qantas, Delta, Austrian, Southwest Airlines even though the overhead bins are the same size. there were other carryons in the bins that also looked larger than mine and there was room left in the bins for more. When I picked up my carryon from baggage claim one of the wheels had broken off.

I was in last row so that is never great bc the person in front of me leaned his seat all the way back into me.

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

Information on your arrival and departure airports