ONT - LEX

$309 Find Cheap Flights from Ontario to Lexington

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 Lexington departing on 5/28. 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 Lexington

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Lexington, 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 Lexington, as well as popular online travel agencies
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$331
Typical prices: $371-$288
Delta
Tue 8/4Wed 8/12
ONT - LEX • 1 stop
Cheapest one-way
$309
Typical prices: $232-$276
Delta
Thu 5/28
ONT - LEX • 1 stop
Top airlines
Cheapest • from $331 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between Ontario and Lexington. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $394 (round-trip)
Shortest trip • 5h 51m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 100% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Lexington!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Lexington (ONT-LEX)

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

Tue, Aug 4 - Wed, Aug 12
Delta Logo
11:48 am - 10:04 pm
ONT
-
LEX
7h 16m
1 stop
Delta Logo
7:10 am - 11:04 am
LEX
-
ONT
6h 54m
1 stop
$331Delta
Wed, Oct 14 - Wed, Oct 21
American Airlines Logo
8:00 pm - 10:25 am
ONT
-
LEX
11h 25m
2 stops
American Airlines Logo
3:47 pm - 8:04 pm
LEX
-
ONT
7h 17m
1 stop
$336American Airlines
Thu, Aug 6 - Tue, Aug 11
Delta Logo
10:00 pm - 9:24 am
ONT
-
LEX
8h 24m
1 stop
Delta Logo
7:10 am - 11:04 am
LEX
-
ONT
6h 54m
1 stop
$340Delta
Wed, May 27 - Wed, Jun 3
Delta Logo
5:50 pm - 10:02 am
ONT
-
LEX
13h 12m
2 stops
Delta Logo
5:55 am - 12:19 pm
LEX
-
ONT
9h 24m
2 stops
$342Delta
Thu, Aug 6 - Thu, Aug 13
Delta Logo
10:00 pm - 9:24 am
ONT
-
LEX
8h 24m
1 stop
Delta Logo
1:30 pm - 6:01 pm
LEX
-
ONT
7h 31m
1 stop
$349Delta
Sat, May 23 - Wed, May 27
American Airlines Logo
10:22 am - 7:37 pm
ONT
-
LEX
6h 15m
1 stop
American Airlines Logo
5:41 pm - 11:59 pm
LEX
-
ONT
9h 18m
1 stop
$350American Airlines
Sat, May 23 - Wed, May 27
Delta Logo
10:00 pm - 9:21 am
ONT
-
LEX
8h 21m
1 stop
Delta Logo
5:52 pm - 11:34 pm
LEX
-
ONT
8h 42m
2 stops
$355Delta
Sat, May 23 - Wed, May 27
Delta Logo
5:55 pm - 9:21 am
ONT
-
LEX
12h 26m
2 stops
Delta Logo
5:52 pm - 11:34 pm
LEX
-
ONT
8h 42m
2 stops
$360Delta
Fri, Aug 7 - Thu, Aug 13
Delta Logo
10:00 pm - 9:24 am
ONT
-
LEX
8h 24m
1 stop
Delta Logo
1:30 pm - 6:01 pm
LEX
-
ONT
7h 31m
1 stop
$369Delta
Fri, Aug 7 - Thu, Aug 13
Delta Logo
10:00 pm - 9:24 am
ONT
-
LEX
8h 24m
1 stop
Delta Logo
7:10 am - 4:14 pm
LEX
-
ONT
12h 04m
2 stops
$374Delta
Booking Insights

KAYAK's insights & trends for Ontario to Lexington flights

Get data-powered insights and trends into flights from Ontario to Lexington 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 Lexington?

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 Lexington departing in August.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Ontario to Lexington, 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 Lexington is January, where tickets cost $0 (return) on average. On the other hand, the most expensive months are November and February, where the average cost of round-trip tickets is $550 and $496 respectively.

Good to know

Low seasonAugust
Cheapest flight$309
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 2% lower on average.
Flight from Ontario to Lexington

When to book flights from Ontario to Lexington

Are your dates flexible? Find out the best times to travel from Ontario to Lexington 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 Ontario to Lexington

  • What is the cheapest flight from Ontario to Lexington?

    In the last 3 days, the lowest price for a flight from Ontario to Lexington was $309 for a one-way ticket and $331 for a round-trip.

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

    No

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

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

  • Which airline alliances offer flights from Ontario to Lexington?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Lexington are Delta and United Airlines. With an average price for the route of $378 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $385 and an overall rating of 7.4.

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

    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 Lexington.

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

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

    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 Lexington with an airline and back to Ontario with another airline. Booking your flights between Ontario and LEX 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 Ontario to Lexington?

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

Reviews of the top 3 airlines serving from Ontario to Lexington

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Lexington. 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 Lexington? 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.
7.9
DeltaOverall score based on 8464 reviews
8.5Crew
7.9Comfort
8.1Boarding
7.2Food
7.8Entertainment
Airline reviews

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!

10.0 ExcellentTeresa, Apr 2026
SMF - LAX
Read more Delta reviews

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.

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 .

OK, we were delayed and had to de plane and reboard.

Seats are uncomfortable. This has been a trend in the industry for decades. Trying to fit more seats on each plane to increase profits at the expense of the passenger.

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 Lexington

Information on your arrival and departure airports