ONT - LEX

$158 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 4/29. 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
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Everything you should know

Cheapest round-trip
$316
Typical prices: $378-$453
Multiple Airlines
Thu 4/2Thu 4/9
ONT - LEX • 1 stop
Cheapest one-way
$158
Typical prices: $269-$283
Multiple Airlines
Wed 4/29
ONT - LEX • 1 stop
Top airlines
Cheapest • from $349 (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
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Insights
Top layover airports
Cheapest • Avg $376 (round-trip)
Shortest trip • 5h 51m (one-way)
Insights
Insights
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Insights
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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

Thu, Apr 2 - Thu, Apr 9
Multiple Airlines Logo
10:50 am - 9:26 pm
ONT
-
LEX
7h 36m
1 stop
Multiple Airlines Logo
10:19 pm - 8:04 am
LEX
-
ONT
12h 45m
1 stop
$316Multiple Airlines
Fri, May 8 - Sat, May 9
American Airlines Logo
10:26 pm - 11:08 am
ONT
-
LEX
9h 42m
1 stop
American Airlines Logo
2:15 pm - 7:34 pm
LEX
-
ONT
8h 19m
2 stops
$349American Airlines
Fri, May 8 - Sat, May 9
American Airlines Logo
7:35 pm - 11:08 am
ONT
-
LEX
12h 33m
2 stops
American Airlines Logo
2:15 pm - 7:34 pm
LEX
-
ONT
8h 19m
2 stops
$354American Airlines
Fri, May 29 - Fri, Jul 31
Delta Logo
10:00 pm - 9:21 am
ONT
-
LEX
8h 21m
1 stop
Delta Logo
5:55 pm - 10:09 pm
LEX
-
ONT
7h 14m
1 stop
$369Delta
Wed, Apr 1 - Sun, Apr 5
Multiple Airlines Logo
10:03 pm - 9:26 pm
ONT
-
LEX
20h 23m
1 stop
Multiple Airlines Logo
10:21 pm - 8:04 am
LEX
-
ONT
12h 43m
1 stop
$371Multiple Airlines
Fri, May 29 - Fri, Jul 31
Delta Logo
5:50 pm - 10:02 am
ONT
-
LEX
13h 12m
2 stops
Delta Logo
5:55 pm - 10:09 pm
LEX
-
ONT
7h 14m
1 stop
$374Delta
Fri, May 29 - Fri, Jul 31
Delta Logo
5:50 pm - 10:02 am
ONT
-
LEX
13h 12m
2 stops
Delta Logo
5:55 pm - 10:09 pm
LEX
-
ONT
7h 14m
1 stop
$379Delta
Thu, Apr 2 - Thu, Apr 9
Multiple Airlines Logo
10:50 am - 9:26 pm
ONT
-
LEX
7h 36m
1 stop
Multiple Airlines Logo
10:19 pm - 8:04 am
LEX
-
ONT
12h 45m
1 stop
$382Multiple Airlines
Fri, Apr 3 - Tue, Apr 14
Delta Logo
10:25 pm - 9:20 am
ONT
-
LEX
7h 55m
1 stop
Delta Logo
2:19 pm - 9:00 pm
LEX
-
ONT
9h 41m
1 stop
$394Delta
Wed, Apr 22 - Sat, Apr 25
Delta Logo
10:15 pm - 9:35 am
ONT
-
LEX
8h 20m
1 stop
Delta Logo
7:19 am - 4:25 pm
LEX
-
ONT
12h 06m
2 stops
$399Delta
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 April.

Good to know

Low seasonAugust
Cheapest flight$158
Best time to beat the crowds with an average 31% drop in price.
Most popular time to fly and prices are also 11% 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 $158 for a one-way ticket and $316 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?

    oneworld, and SkyTeam 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 $378 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 $446 and an overall rating of 7.1.

  • 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 8288 reviews
7.9Comfort
8.5Crew
8.1Boarding
7.8Entertainment
7.2Food
Airline reviews

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

2.0 MediocreIsabella, Mar 2026
SJC - SLC
Read more Delta reviews

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

The plane was an older model, so it wasn’t as comfortable as others. The flight attendants were not helpful during onboarding. It was a full flight so there was chaos finding space for baggage.

Awesome! On time flight, early arrival, and a complimentary upgrade!

Delta One is extraordinary. I fly business when somebody hires me. I just wonder why there is such a chasm between business class and the insanely inhumane and nonsensical coach. The seats are not large enough to fit even my tiny wife. We fly 10% of what we did because we don’t want to pay 5-10 k but for $400 it’s unbearable. It seems like the accountants took over and made stupid decisions. Screw in 20 extra seats and make it so unbearable that people fly 90% less. Just put the damn price up and put some proper chairs in. But business, yay.

Delta’s staff is unmatched. From the gate agents, to the pilots, to the flight attendants… all top of the industry.

The flight was delayed for about 2 hrs. Other than it, it was good.

I am extremely disappointed that delta internal pilot manuals now refer to the Gulf of Mexico as the “gulf of America”. You can bow down to the Orange turd on your own. I will never fly delta again

Delay after delay with little communication then AA lost my luggage and at airport would not assist just said scan this QR code to track your luggage and submit a claim. However QR code provided did not work so have to go back to airport

The gate got changed several times and the flight was delayed over an hour. Awful experience

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

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

Information on your arrival and departure airports