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$184+ 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 12/23. Fares are subject to change and may not be available on all flights or dates of travel.
LEX — ONT
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap 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 December 18, 2025.

This Delta deal was found by Cheapflights users on 12/17. 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 12/213:36 pmLEX - ONT
1 stop7h 14mDelta
Tue 1/1310:30 pmONT - LEX
1 stop8h 57mDelta
Deal found 12/17$414
This Delta deal was found by Cheapflights users on 12/17. 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 12/213:36 pmLEX - ONT
2 stops11h 18mDelta
Fri 1/912:41 pmONT - LEX
1 stop8h 10mDelta
Deal found 12/17$419
This Delta deal was found by Cheapflights users on 12/17. 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 12/215:52 pmLEX - ONT
1 stop8h 31mDelta
Wed 1/710:30 pmONT - LEX
1 stop8h 57mDelta
Deal found 12/17$439
This Delta deal was found by Cheapflights users on 12/17. 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 12/213:36 pmLEX - ONT
2 stops11h 18mDelta
Thu 1/810:30 pmONT - LEX
1 stop8h 57mDelta
Deal found 12/17$444
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Thu 12/188:15 amLEX - ONT
1 stop7h 23mUnited Airlines
Thu 1/81:24 pmONT - LEX
1 stop6h 06mUnited Airlines
Deal found 12/17$504
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/231:57 pmLEX - ONT
2 stops10h 10mUnited Airlines
Mon 1/121:24 pmONT - LEX
1 stop6h 06mUnited Airlines
Deal found 12/17$509
This United Airlines deal was found by Cheapflights users on 12/17. 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 12/231:57 pmLEX - ONT
2 stops10h 10mUnited Airlines
Wed 1/75:05 amONT - LEX
2 stops9h 08mUnited Airlines
Deal found 12/17$514
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/221:57 pmLEX - ONT
2 stops10h 10mUnited Airlines
Mon 1/121:24 pmONT - LEX
1 stop6h 06mUnited Airlines
Deal found 12/17$545
This United Airlines deal was found by Cheapflights users on 12/17. 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.
Mon 12/221:57 pmLEX - ONT
2 stops10h 10mUnited Airlines
Tue 1/135:05 amONT - LEX
2 stops8h 43mUnited Airlines
Deal found 12/17$550
This Delta deal was found by Cheapflights users on 12/17. 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 12/215:52 pmLEX - ONT
1 stop8h 31mDelta
Mon 1/1210:30 pmONT - LEX
2 stops21h 36mDelta
Deal found 12/17$557
This Delta deal was found by Cheapflights users on 12/17. 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.
Mon 12/225:52 pmLEX - ONT
1 stop8h 31mDelta
Sun 1/111:11 pmONT - LEX
2 stops29h 30mDelta
Deal found 12/17$574

Find 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 December 18, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$293
(Delta)

One-way from

$184
(Trip.com)

Popular in

February

Cheapest in

October

Average price

$571
Provider with most accurate pricing for Lexington Blue Grass-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lexington Blue Grass-Ontario flights.
Search Deals
From Lexington Blue Grass to Ontario
Search Deals
One-way flight from Lexington Blue Grass to Ontario
Search Deals
Highest demand for flights based on searches. 22% potential increase in price ($140 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 December 18, 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

Tue 1/13

2:17 pm-9:05 pm

1 stop9h 48m

Ontario

Tue 1/20

12:41 pm-11:53 pm

1 stop8h 12m

$293

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 1/13

8:07 am-6:20 pm

2 stops13h 13m

Ontario

Tue 1/20

9:59 am-11:23 pm

2 stops10h 24m

$303

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 2/6

7:41 am-2:18 pm

1 stop9h 37m

Ontario

Wed 3/4

10:59 am-9:57 pm

1 stop7h 58m

$394

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 5/16

5:50 pm-10:26 pm

1 stop7h 36m

Ontario

Sat 5/23

7:00 am-4:55 pm

1 stop6h 55m

$399

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 5/6

5:50 pm-10:26 pm

1 stop7h 36m

Ontario

Tue 5/12

7:00 am-4:55 pm

1 stop6h 55m

$399

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 1/27

2:00 pm-9:58 pm

2 stops10h 58m

Ontario

Sat 1/31

6:00 am-8:31 pm

2 stops11h 31m

$409

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sun 3/29

6:00 am-11:35 am

1 stop8h 35m

Ontario

Sun 4/5

10:30 pm-9:36 am

1 stop8h 06m

$424

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 3/28

6:00 am-11:35 am

1 stop8h 35m

Ontario

Sat 4/4

10:30 pm-9:36 am

1 stop8h 06m

$424

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/14

9:00 am-12:43 pm

1 stop6h 43m

Ontario

Wed 2/18

5:00 am-10:28 pm

1 stop14h 28m

$449

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 12/23

10:22 pm-5:15 pm

1 stop21h 53m

$205

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 19 results
1
2

Compare providers for flights from Lexington to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Lexington to Ontario in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Lexington-Ontario flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Lexington-Ontario flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Lexington-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Lexington-Ontario flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Lexington-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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, May is the cheapest month in which you can book a flight from Lexington to Ontario (average of $93). Flying from Lexington to Ontario in April is currently the most expensive (average of $166). 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 December 18, 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 23% 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 December 18, 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
7.9
Good
8,005 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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
7.9
Good
8,005 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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
11,054 reviews
Delta
7.9
Good
8,005 reviews

Comfort

7.9

Food

7.3

Entertainment

7.9

Overall

7.9

Boarding

8.1

Crew

8.5

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 36m. Delta provides one of the quickest options available for as low as $399. 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?

    Delta, at $288, was found to be the cheapest airline from Lexington to Ontario. An alternate airline flying to your destination would be American Airlines. Delta is priced at 38% 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, May is the cheapest month in which you can book a flight from Lexington to Ontario (average of $93). Flying from Lexington to Ontario in April is currently the most expensive (average of $166). 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

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$373FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$313Average$482FlexibilityNo cancel feeOn-time71%

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