LEX - ONT

$289 Find Cheap Flights from Lexington 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 Lexington to Ontario departing on 5/11. 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 Ontario

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

Cheapest round-trip
$309
Delta
Tue 3/3Sat 3/7
LEX - ONT • 1 stop
Cheapest one-way
$289
United Airlines
Mon 5/11
LEX - ONT • 1 stop
Top airlines
Delta
Cheapest • from $309 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+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 Ontario!
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Booking Insights
Flight Deals

Cheap Flights from Lexington to Ontario (LEX-ONT)

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

Tue, Mar 3 - Sat, Mar 7
Delta Logo
3:46 pm - 9:05 pm
LEX
-
ONT
8h 19m
1 stop
Delta Logo
10:20 pm - 8:20 am
ONT
-
LEX
7h 00m
1 stop
$309Delta
Tue, Mar 3 - Sat, Mar 7
United Airlines Logo
10:35 am - 8:50 pm
LEX
-
ONT
13h 15m
2 stops
United Airlines Logo
11:59 pm - 1:15 pm
ONT
-
LEX
9h 16m
1 stop
$314United Airlines
Mon, Jul 27 - Sat, Aug 8
Delta Logo
5:55 pm - 10:09 pm
LEX
-
ONT
7h 14m
1 stop
Delta Logo
10:59 pm - 9:24 am
ONT
-
LEX
7h 25m
1 stop
$319Delta
Wed, Mar 4 - Mon, Mar 16
American Airlines Logo
7:00 am - 1:49 pm
LEX
-
ONT
9h 49m
1 stop
American Airlines Logo
11:59 pm - 12:09 pm
ONT
-
LEX
9h 10m
1 stop
$334American Airlines
Wed, Mar 4 - Mon, Mar 16
American Airlines Logo
7:00 am - 4:22 pm
LEX
-
ONT
12h 22m
2 stops
American Airlines Logo
11:59 pm - 12:09 pm
ONT
-
LEX
9h 10m
1 stop
$339American Airlines
Wed, Jul 29 - Fri, Aug 7
Delta Logo
5:55 pm - 10:09 pm
LEX
-
ONT
7h 14m
1 stop
Delta Logo
12:00 pm - 9:21 pm
ONT
-
LEX
6h 21m
1 stop
$344Delta
Tue, Feb 24 - Sat, Feb 28
Delta Logo
3:46 pm - 9:05 pm
LEX
-
ONT
8h 19m
1 stop
Delta Logo
10:20 pm - 9:20 am
ONT
-
LEX
8h 00m
1 stop
$359Delta
Tue, Feb 24 - Sat, Feb 28
Delta Logo
5:35 pm - 11:49 pm
LEX
-
ONT
9h 14m
2 stops
Delta Logo
10:20 pm - 9:20 am
ONT
-
LEX
8h 00m
1 stop
$364Delta
Tue, Feb 24 - Sat, Feb 28
United Airlines Logo
7:00 am - 5:41 pm
LEX
-
ONT
13h 41m
2 stops
United Airlines Logo
5:00 am - 4:50 pm
ONT
-
LEX
8h 50m
2 stops
$369United Airlines
Sat, Feb 21 - Mon, Mar 2
Delta Logo
5:00 pm - 9:05 pm
LEX
-
ONT
7h 05m
1 stop
Delta Logo
1:15 pm - 11:48 pm
ONT
-
LEX
7h 33m
1 stop
$379Delta
Booking Insights

KAYAK's insights & trends for Lexington to Ontario flights

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

Which airlines provide the cheapest flights from Lexington to Ontario?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Lexington to Ontario were found on Delta ($309) and United Airlines ($314).

Good to know

Low seasonOctober
Cheapest flight$289
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly and prices are also 18% lower on average.
Flight from Lexington to Ontario

When to book flights from Lexington to Ontario

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

  • What is the cheapest flight from Lexington to Ontario?

    In the last 3 days, the lowest price for a flight from Lexington to Ontario was $289 for a one-way ticket and $309 for a round-trip.

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

    A passport is not required to fly from Lexington to Ontario.

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

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

  • Which airline alliances offer flights from Lexington to Ontario?

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

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

    The two airlines most popular with KAYAK users for flights from Lexington to Ontario are Delta and American Airlines. With an average price for the route of $344 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 $482 and an overall rating of 7.2.

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

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Lexington 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 Lexington 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 to Ontario with an airline and back to Lexington with another airline. Booking your flights between Lexington and ONT 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 Lexington 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 to Ontario from Lexington 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 Lexington to Ontario

 
See real verified KAYAK customer reviews for airlines flying from Lexington 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 Lexington 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.
7.9
DeltaOverall score based on 8180 reviews
8.5Crew
8.1Boarding
7.8Entertainment
7.9Comfort
7.2Food
Airline reviews

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

10.0 ExcellentSarah, Feb 2026
SFO - LAX
Read more Delta reviews

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

Was forced to check in my small carry on, even though I informed the crew it has very fragile items inside

They double booked seats, the gate staff changed my ticket as I was boarding she went over to the computer and changed it without telling me. She messed up an entire three row section for me and others. Other travelers were outraged but the gate staff were so rude, so condescending saying it wasn't their problem to solve. I would rate this a zero if I could. Will not fly Delta again I'll stick with United and American.

I usually get upgraded so my experience is usually amazing. I did not get upgraded this time - which was fine - but the wifi had issues, the monitors were going in & out, & (though not Delta's fault) one of the gentlemen next to me desperately needed a shower.

I really liked the legroom. I am 6’4”.a at For some reason our seats were not together and using the app to fix it didn’t work. Passengers were nice enough to move for us but you should absolutely ensure a parent sits with their child.

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

The crew took good care of us. The flight from ATL to SFO is a longer one, and there were multiple beverage offerings. I like the 757's that Delta uses. Good airplane that is comfortable. I do wish Delta would separate Priority boarding from the better seats. I would gladly take a smaller seat in an open row than be jammed into Comfort just to get priority boarding, just to make sure I don't have to check a bag.

Gate agent rushed to fill hot jetway with crowd so it took over 12 minutes to go from gate to plane. Just like a discount airline Pooly prepared cabin and third time that claim of rough air prevented any cabin service. Friends on a Southwest flight at similar time had service.

The flight was significantly delayed for 6.5 hours because of snow. There was no communication once the plane returned to the gate regarding when the flight would resume. Other flights were departing while our flight was being unloaded for reasons unknown. Our flight also seemed out of the queue regarding further deicing, refueling, and waiting to Taxi to the runway.

They are always late and seats was also not having working charger

did not have enough meal for first class passengers so offer us snack

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

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

Information on your arrival and departure airports