ONT - LEX

$246 Find Cheap Flights from Ontario to Lexington

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Lexington departing on 10/23. 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 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
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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

Thu, Oct 23 - Sun, Oct 26
Multiple Airlines Logo
6:05 am - 9:43 pmONT-LEX
12h 38m1 stop
Multiple Airlines Logo
10:33 pm - 11:47 amLEX-ONT
16h 14m1 stop
$246Multiple Airlines
Find Deal
Sat, Oct 25 - Wed, Oct 29
American Airlines Logo
10:57 am - 10:01 pmONT-LEX
8h 04m1 stop
American Airlines Logo
5:29 am - 10:07 amLEX-ONT
7h 38m1 stop
$289American Airlines
Find Deal
Sat, Oct 25 - Wed, Oct 29
Delta Logo
11:36 am - 12:04 amONT-LEX
9h 28m1 stop
Delta Logo
6:00 am - 12:14 pmLEX-ONT
9h 14m2 stops
$294Delta
Find Deal
Sat, Mar 7 - Wed, Mar 11
Delta Logo
10:30 pm - 8:25 amONT-LEX
6h 55m1 stop
Delta Logo
5:55 am - 11:38 amLEX-ONT
8h 43m1 stop
$339Delta
Find Deal
Wed, Oct 1 - Sun, Oct 5
Multiple Airlines Logo
8:00 am - 6:35 pmONT-LEX
31h 35m2 stops
Multiple Airlines Logo
10:33 pm - 8:56 pmLEX-ONT
25h 23m1 stop
$341Multiple Airlines
Find Deal
Thu, Oct 23 - Sun, Oct 26
Multiple Airlines Logo
6:05 am - 9:43 pmONT-LEX
12h 38m1 stop
Multiple Airlines Logo
7:25 pm - 4:28 pmLEX-ONT
24h 03m2 stops
$363Multiple Airlines
Find Deal
Tue, Nov 18 - Mon, Nov 24
United Airlines Logo
7:00 am - 5:10 pmONT-LEX
7h 10m1 stop
United Airlines Logo
5:45 pm - 10:31 pmLEX-ONT
7h 46m1 stop
$429United Airlines
Find Deal
Wed, Oct 1 - Sat, Oct 4
United Airlines Logo
6:00 am - 9:01 pmONT-LEX
12h 01m2 stops
United Airlines Logo
9:15 am - 12:51 pmLEX-ONT
6h 36m1 stop
$434United Airlines
Find Deal
Fri, Oct 24 - Mon, Oct 27
Alaska Airlines Logo
7:43 pm - 10:42 amONT-LEX
11h 59m2 stops
Alaska Airlines Logo
11:12 am - 11:32 pmLEX-ONT
15h 20m2 stops
$698Alaska Airlines
Find Deal
Thu, Oct 23 - Mon, Oct 27
Alaska Airlines Logo
6:00 am - 11:21 pmONT-LEX
14h 21m2 stops
Alaska Airlines Logo
11:12 am - 11:32 pmLEX-ONT
15h 20m2 stops
$812Alaska Airlines
Find Deal

Everything you should know

Top airlines
American Airlines
Cheapest • from $289 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
August
Cheapest • 32% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$246
Typical prices: $438-550
Multiple Airlines
Thu 10/23Sun 10/26
ONT - LEX • 1 stop
Cheapest one-way
$259
Delta
Wed 10/15
ONT - LEX • 1 stop
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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!
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?

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

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

When flying from Ontario to Lexington, you should consider leaving on a Wednesday and avoid Mondays if you are looking for the best rates. For your return to Ontario, you’ll find the best rates on Saturdays and the most expensive ones on Sundays.

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 August, where tickets cost $288 (return) on average. On the other hand, the most expensive months are September and December, where the average cost of round-trip tickets is $587 and $565 respectively.

Good to know

Low seasonFebruary
Cheapest flight$246
Best time to beat the crowds with an average 27% drop in price.
Most popular time to fly and prices are also 16% 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 $259 for a one-way ticket and $246 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?

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

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

    The two airlines most popular with KAYAK users for flights from Ontario to Lexington are Delta and American Airlines. With an average price for the route of $376 and an overall rating of 7.9, Delta is the most popular choice. American Airlines is also a great choice for the route, with an average price of $435 and an overall rating of 7.2.

  • 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 airlines flying 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 7964 reviews
7.3Food
7.9Comfort
7.9Entertainment
8.2Boarding
8.5Crew
Airline reviews

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

2.0 MediocreAnonymous, Sep 2025SNA - SEA
Read more Delta reviews

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

My husband upgraded our seats and I don't know if it was due to the type of planet was or if they didn't upgrade our seats. We were supposed to be in I believe comfort seats and they were just as tight as any other seat- no leg room and we are very tall people but at least it wasn't extremely cold. My husband did put in a complaint about our seating because he paid extra and if we would have known that the space and the tightness would have been the same, we just would have gotten the emergency row emergency row seats that we normally get. We love Delta but both our flights coming home we're not good. Oh I forgot to mention that on our flight to Hawaii our luggage wheels got broke and we had to purse new luggage on vacation then we never had this problem so we didn't know protocol and reported it after we got home only for them to tell is we only had 24hrs to report the damage. Not sure what was going on with Delta this vacation trip.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

Most aspects were good however if they assign boarding zones they ought to enforce them or why bother? My luggage from SAN-JFK-MAD was lost in NY so I without my main bag for two days upon arrival in Spain. They were helpful in tracking it and eventually delivered it to my hotel. The flub was because of a delay upon arrival in NYC. I had booked 2 1/2 hours between flights but we had to hold on the taxiway for an hour after landing while waiting for a clear gate which likely caused the baggage error.

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

737-800 in first class was pretty dumpy. Seat had an uncomfortable angle, storage under the seat was blocked so even my very modest backpack didn't fit, power outlet was flaky. Weird tiny seat pockets that couldn't hold a gallon ziploc bag, emesis bag missing, etc. etc. No in-flight service due to turbulence. Crew was excellent, boarding was smooth despite a full flight.

The entertainment package was vast and the selections were very current. Keep updating it was great.

The seat was so hard my tailbone was aching The crew was kind of a b**** because I made a joke that I didn't care if they close the door I total c*** when she was trying to f****** act like she was mad at me because I said that The flight was bumpy. Sure you didnt have control over that.

My Internet did not work for Outlook email or basically anything. I paid for one hour of in-flight usage and it was terrible. I spent a lot of time on different sites and browsers with no luck and a lot of frustration. Other than that, the flight was on time, crew was nice, service was fine. Seat was OK even though I paid for the extra 6 inches. I cannot imagine how tight the seats in the back must be.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

While waiting to claim my checked luggage, I discovered the airline had lost it. After a long wait and inquiries, I discovered it was on another flight. Fortunately, the airline finally sent my luggage home.

Was not able to watch most shows on the entertainment site. They would not load

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

AA re-routed flight from HNL to LAX due to delay. My group of 3 with reserved seats in row 9 was broken up, with one assigned to a middle seat, another in the last row of the plane. Not happy. No explanation to the delay. No apologies. No compensation. Would have been nice to be offered an Admiral Club admission or a voucher for the extra 3 hours of layover in LAX. Could not hear the boarding gate announcements in LAX. Adjacent gate was boarding at the same time. Loud speakers were competing against each other. Barely made my boarding group.

Almost a 6 hour flight and the only food option is a cheese plate… and chips. Also how is it there are no options for texting on American. I’ll be going back to delta and united.

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

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