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Lexington

$263+ Cheap flights from Ontario to Lexington (ONT - LEX)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/23. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — LEX
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Ontario to Lexington

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Lexington (LEX). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$263
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$419
From Ontario to Lexington Blue Grass
Search Deals
Highest demand for flights based on searches. 3% potential increase in price ($15 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Ontario to Lexington

Cheapest flights from Ontario to Lexington
Explore the most affordable flight options available from Ontario to Lexington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/236:05 amONT - LEX
1 stop12h 38mMultiple Airlines
Sun 10/2610:33 pmLEX - ONT
1 stop26h 32mMultiple Airlines
Deal found 9/10$263
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2912:47 pmONT - LEX
1 stop8h 33mAmerican Airlines
Tue 11/46:22 pmLEX - ONT
1 stop7h 07mAmerican Airlines
Deal found 9/10$289
This Trip.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/96:05 amONT - LEX
1 stop12h 38mMultiple Airlines
Thu 10/1610:33 pmLEX - ONT
1 stop12h 14mMultiple Airlines
Deal found 9/11$294
This Delta deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2810:00 pmONT - LEX
1 stop8h 21mDelta
Wed 10/83:46 pmLEX - ONT
1 stop9h 36mDelta
Deal found 9/11$314
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/287:16 pmONT - LEX
2 stops12h 23mAmerican Airlines
Wed 10/83:52 pmLEX - ONT
1 stop8h 44mAmerican Airlines
Deal found 9/11$319
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:25 pmONT - LEX
1 stop8h 02mDelta
Sun 11/236:12 pmLEX - ONT
2 stops8h 40mDelta
Deal found 9/10$349
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2411:55 amONT - LEX
1 stop7h 31mDelta
Thu 10/23:42 pmLEX - ONT
1 stop6h 33mDelta
Deal found 9/10$369
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/1910:00 pmONT - LEX
1 stop8h 21mDelta
Wed 9/246:15 pmLEX - ONT
1 stop7h 08mDelta
Deal found 9/10$379
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1910:34 pmONT - LEX
1 stop9h 13mAmerican Airlines
Sun 11/237:03 pmLEX - ONT
1 stop7h 54mAmerican Airlines
Deal found 9/10$384
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/95:05 amONT - LEX
2 stops12h 34mUnited Airlines
Sat 12/1310:07 amLEX - ONT
2 stops13h 35mUnited Airlines
Deal found 9/10$389

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Lexington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
Use the filters below to find and compare flights from Ontario to Lexington that are best for you.

Fly from

Ontario

Fly to

Lexington

Route

Depart

Return

Price

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Thu 10/23

6:05 am-9:43 pm

1 stop12h 38m

Lexington Blue Grass

Sun 10/26

10:33 pm-10:05 pm

1 stop26h 32m

$263

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 10/29

12:47 pm-12:20 am

1 stop8h 33m

Lexington Blue Grass

Tue 11/4

6:22 pm-10:29 pm

1 stop7h 07m

$289

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Thu 10/9

6:05 am-9:43 pm

1 stop12h 38m

Lexington Blue Grass

Thu 10/16

10:33 pm-7:47 am

1 stop12h 14m

$294

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sun 9/28

10:00 pm-9:21 am

1 stop8h 21m

Lexington Blue Grass

Wed 10/8

3:46 pm-10:22 pm

1 stop9h 36m

$314

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sun 9/28

7:16 pm-10:39 am

2 stops12h 23m

Lexington Blue Grass

Wed 10/8

3:52 pm-9:36 pm

1 stop8h 44m

$319

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 3/7

10:30 pm-8:25 am

1 stop6h 55m

Lexington Blue Grass

Wed 3/11

5:55 am-11:38 am

1 stop8h 43m

$344

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 11/19

10:25 pm-9:27 am

1 stop8h 02m

Lexington Blue Grass

Sun 11/23

6:12 pm-11:52 pm

2 stops8h 40m

$349

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 9/24

11:55 am-10:26 pm

1 stop7h 31m

Lexington Blue Grass

Thu 10/2

3:42 pm-7:15 pm

1 stop6h 33m

$369

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 3/7

1:00 pm-10:16 pm

1 stop6h 16m

Lexington Blue Grass

Wed 3/11

11:20 am-10:45 pm

2 stops14h 25m

$384

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 11/19

10:34 pm-10:47 am

1 stop9h 13m

Lexington Blue Grass

Sun 11/23

7:03 pm-11:57 pm

1 stop7h 54m

$384

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/11

Showing 1-10 of 16 results
1
2

Best time to book a flight from Ontario to Lexington

Have a flexible travel schedule? Discover the best time to fly to Lexington from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

What is the cheapest month to book a flight from Ontario to Lexington?

Currently, August is the cheapest month in which you can book a flight from Ontario to Lexington (average of $303). Flying from Ontario to Lexington in April is currently the most expensive (average of $390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to LEX?

Find hourly flight availability from Ontario to Lexington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

It’s typically best to fly out from Ontario to Lexington in the afternoon. Doing so could potentially save you 19% on the flight price compared to flying in the morning, which is usually more expensive.

Reviews of airlines servicing Lexington

Get insights into the airlines that provide service to Lexington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Lexington. Reviews last updated September 11, 2025.
Get a feel of what it's like to fly with Delta and American Airlines from Ontario to Lexington by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Michael,Sep 2023

SMF - ATL

Not sufficient leg room and three seats are very tigh.t on 737 in economy main cabin

Related info for your journey

Find useful and relevant information for your journey from Ontario to Lexington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ontario to Lexington?

    For as low as $314, American Airlines can have you in Lexington from Ontario in 8h 21m. There are 1852 mi between Ontario and Lexington. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Ontario to Lexington round-trip?

    According to our current data, American Airlines ($248), and Delta ($288) offers the cheapest pricing from Ontario to Lexington. These flights start at 40% lower than the current average price 3 months from now.

  • Can I find deals for flights from Ontario to Lexington that include hotel bookings?

    Yes. In addition to deals on Ontario to Lexington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Lexington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Lexington.

  • Can I find deals for business class flights from Ontario to Lexington?

    Yes. Cheapflights offers flight deals from Ontario to Lexington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Lexington?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Lexington (average of $303). Flying from Ontario to Lexington in April is currently the most expensive (average of $390). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Lexington?

Book flights to Lexington if you plan to visit one of these locations
Georgetown
Berea
Frankfort

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Top 2 airlines flying from Ontario to Lexington

Discover the top 2 airlines that operate flights from Ontario to Lexington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$435FlexibilityNo cancel feeOn-time71%
DeltaCheapest$288Average$376FlexibilityNo cancel feeOn-timeN/A

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