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$180+ Cheap flights from Lexington to Ontario (LEX - ONT)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
LEX — ONT
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from Lexington to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Lexington (LEX) to Ontario (ONT). 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

$289
(Delta)

One-way from

$180
(Kiwi.com)

Popular in

February

Cheapest in

May

Average price

$490
From Lexington Blue Grass to Ontario
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One-way flight from Lexington Blue Grass to Ontario
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Highest demand for flights based on searches. 15% potential increase in price ($89 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Lexington to Ontario

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

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 10/155:57 pmLEX - ONT
1 stop7h 25mDelta
Sat 10/187:05 amONT - LEX
1 stop7h 07mDelta
Deal found 9/10$314
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 10/95:57 pmLEX - ONT
1 stop7h 25mDelta
Mon 10/1310:00 pmONT - LEX
1 stop8h 20mDelta
Deal found 9/9$374
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 10/146:01 pmLEX - ONT
1 stop7h 29mUnited Airlines
Sat 10/187:02 amONT - LEX
1 stop7h 18mUnited Airlines
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.
Thu 9/252:55 pmLEX - ONT
1 stop9h 16mAmerican Airlines
Mon 9/292:54 pmONT - LEX
1 stop6h 32mAmerican Airlines
Deal found 9/10$409
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 9/176:15 pmLEX - ONT
1 stop7h 08mDelta
Tue 9/237:05 amONT - LEX
1 stop9h 03mDelta
Deal found 9/10$419
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 9/179:44 amLEX - ONT
2 stops11h 32mAmerican Airlines
Tue 9/231:10 pmONT - LEX
2 stops8h 16mAmerican Airlines
Deal found 9/10$429
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.
Fri 10/177:33 pmLEX - ONT
1 stop25h 33mUnited Airlines
Sat 11/17:00 amONT - LEX
1 stop7h 10mUnited Airlines
Deal found 9/10$435
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 10/155:57 pmLEX - ONT
1 stop7h 25mDelta
Fri 10/1710:00 pmONT - LEX
1 stop13h 59mDelta
Deal found 9/10$458

Cheapflights Fare Finder

 
Customize your flight search to find flights from Lexington to Ontario 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 Lexington to Ontario that are best for you.

Fly from

Lexington

Fly to

Ontario

Route

Depart

Return

Price

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 10/15

5:57 pm-10:22 pm

1 stop7h 25m

Ontario

Sat 10/18

7:05 am-5:12 pm

1 stop7h 07m

$314

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Thu 10/9

5:57 pm-10:22 pm

1 stop7h 25m

Ontario

Mon 10/13

10:00 pm-9:20 am

1 stop8h 20m

$374

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 1/24

5:32 pm-10:26 pm

1 stop7h 54m

Ontario

Sun 2/1

7:00 am-4:48 pm

1 stop6h 48m

$379

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 10/14

6:01 pm-10:30 pm

1 stop7h 29m

Ontario

Sat 10/18

7:02 am-5:20 pm

1 stop7h 18m

$379

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/28

3:45 pm-9:14 pm

1 stop8h 29m

Ontario

Tue 3/3

5:05 pm-9:25 am

2 stops13h 20m

$379

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/28

6:58 am-5:55 pm

2 stops13h 57m

Ontario

Tue 3/3

8:04 pm-10:40 am

2 stops11h 36m

$389

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sun 2/8

10:30 am-8:58 pm

2 stops13h 28m

Ontario

Mon 2/16

7:00 am-4:55 pm

1 stop6h 55m

$409

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/7

5:32 pm-10:26 pm

1 stop7h 54m

Ontario

Sun 2/15

7:00 am-4:55 pm

1 stop6h 55m

$429

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/17

7:33 pm-6:06 pm

1 stop25h 33m

Ontario

Sat 11/1

7:00 am-5:10 pm

1 stop7h 10m

$435

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 9/30

2:50 pm-7:54 pm

2 stops32h 04m

$180

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 18 results
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Best time to book a flight from Lexington to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Lexington 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 Lexington to Ontario

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

Currently, August is the cheapest month in which you can book a flight from Lexington to Ontario (average of $246). Flying from Lexington to Ontario in March is currently the most expensive (average of $328). 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 LEX to ONT?

Find hourly flight availability from Lexington to Ontario. 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.

When flying from Lexington to Ontario, the time of day you fly usually plays a role in the price. Save by searching for a flight in the morning, which can drop the price by up to 24% versus a flight in the evening.

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated September 11, 2025.
See what other customers who have flown with Delta and American Airlines from Lexington to Ontario have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Lexington to Ontario. 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 Lexington to Ontario?

    A quick flight from Lexington to Ontario can take about 7h 25m. Delta provides one of the quickest options available for as low as $314. The distance between Lexington and Ontario is about 1852 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    American Airlines, at $288, was found to be the cheapest airline from Lexington to Ontario. An alternate airline flying to your destination would be Delta. American Airlines is priced at 39% lower than the current average price of a flight leaving 3 months from now.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Lexington to Ontario 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 Lexington to Ontario?

    Currently, August is the cheapest month in which you can book a flight from Lexington to Ontario (average of $246). Flying from Lexington to Ontario in March is currently the most expensive (average of $328). 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.

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Top 2 airlines flying from Lexington to Ontario

Discover the top 2 airlines that operate flights from Lexington to Ontario. 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$288Average$453FlexibilityNo cancel feeOn-time71%
DeltaCheapest$288Average$385FlexibilityNo cancel feeOn-timeN/A

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