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$289+ 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 2/21. Fares are subject to change and may not be available on all flights or dates of travel.
LEX — ONT
Feb 18 — Feb 251
Wed 2/18
Wed 2/25
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 January 19, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$309
(Delta)

One-way from

$289
(Delta)

Popular in

February

Cheapest in

October

Average price

$439
Provider with most accurate pricing for Lexington Blue Grass-Ontario flight deals.
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Provider most trusted by Cheapflights users for Lexington Blue Grass-Ontario flights.
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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 ($82 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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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 January 19, 2026.

This Delta deal was found by Cheapflights users on 1/17. 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.
Sat 2/76:00 am
LEX
-
ONT
1 stop8h 31m
Delta
Sat 2/1410:20 pm
ONT
-
LEX
1 stop8h 00m
Delta
Deal found 1/17$309
This United Airlines deal was found by Cheapflights users on 1/17. 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.
Sat 2/72:00 pm
LEX
-
ONT
2 stops10h 58m
United Airlines
Sat 2/145:00 am
ONT
-
LEX
2 stops8h 50m
United Airlines
Deal found 1/17$320
This Delta deal was found by Cheapflights users on 1/17. 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.
Fri 4/2412:26 pm
LEX
-
ONT
1 stop9h 02m
Delta
Sun 5/310:15 pm
ONT
-
LEX
1 stop8h 22m
Delta
Deal found 1/17$334
This Delta deal was found by Cheapflights users on 1/18. 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.
Sat 6/61:30 pm
LEX
-
ONT
1 stop7h 45m
Delta
Tue 6/95:05 pm
ONT
-
LEX
2 stops14h 11m
Delta
Deal found 1/18$339
This Delta deal was found by Cheapflights users on 1/18. 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.
Sat 2/76:00 am
LEX
-
ONT
1 stop8h 31m
Delta
Mon 2/1610:20 pm
ONT
-
LEX
1 stop8h 00m
Delta
Deal found 1/18$359
This United Airlines deal was found by Cheapflights users on 1/18. 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 5/215:50 pm
LEX
-
ONT
1 stop7h 36m
United Airlines
Sun 5/247:00 am
ONT
-
LEX
1 stop6h 55m
United Airlines
Deal found 1/18$365
This American Airlines deal was found by Cheapflights users on 1/18. 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.
Sat 2/143:00 pm
LEX
-
ONT
1 stop9h 24m
American Airlines
Tue 2/175:02 pm
ONT
-
LEX
2 stops13h 26m
American Airlines
Deal found 1/18$384
This Delta deal was found by Cheapflights users on 1/18. 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 3/254:14 pm
LEX
-
ONT
1 stop7h 46m
Delta
Mon 3/3010:25 pm
ONT
-
LEX
1 stop7h 55m
Delta
Deal found 1/18$389
This United Airlines deal was found by Cheapflights users on 1/17. 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.
Sat 9/125:50 pm
LEX
-
ONT
1 stop7h 36m
United Airlines
Sat 9/197:00 am
ONT
-
LEX
1 stop6h 55m
United Airlines
Deal found 1/17$399

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 January 19, 2026.
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

Sat 2/14

2:10 pm-9:05 pm

1 stop9h 55m

Ontario

Tue 2/17

10:20 pm-9:20 am

1 stop8h 00m

$309

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/7

10:37 am-9:05 pm

2 stops13h 28m

Ontario

Sat 2/14

10:20 pm-9:20 am

1 stop8h 00m

$314

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/7

2:00 pm-9:58 pm

2 stops10h 58m

Ontario

Sat 2/14

5:00 am-4:50 pm

2 stops8h 50m

$320

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 4/24

12:26 pm-6:28 pm

1 stop9h 02m

Ontario

Sun 5/3

10:15 pm-9:37 am

1 stop8h 22m

$334

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 5/23

3:45 pm-10:09 pm

1 stop9h 24m

Ontario

Thu 5/28

12:00 pm-9:21 pm

1 stop6h 21m

$334

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 6/6

1:30 pm-6:15 pm

1 stop7h 45m

Ontario

Tue 6/9

5:05 pm-10:16 am

2 stops14h 11m

$339

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/7

6:00 am-11:31 am

1 stop8h 31m

Ontario

Mon 2/16

10:20 pm-9:20 am

1 stop8h 00m

$359

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 2/18

6:00 am-12:02 pm

1 stop9h 02m

Ontario

Mon 2/23

10:20 pm-9:20 am

1 stop8h 00m

$364

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 5/20

3:45 pm-10:09 pm

1 stop9h 24m

Ontario

Wed 5/27

12:00 pm-11:55 pm

1 stop8h 55m

$364

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Thu 5/21

5:50 pm-10:26 pm

1 stop7h 36m

Ontario

Sun 5/24

7:00 am-4:55 pm

1 stop6h 55m

$365

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/18

Showing 1-10 of 23 results
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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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Lexington-Ontario flight deals on Cheapflights vs. FlightHub >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 Expedia the most. Expedia 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 January is currently the most expensive (average of $174). 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.

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 January 19, 2026.
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
8,075 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

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
8,075 reviews
Delta
7.9
Good
8,075 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

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
11,160 reviews
Delta
7.9
Good
8,075 reviews

Boarding

8.1

Comfort

7.9

Entertainment

7.8

Overall

7.9

Food

7.2

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 9h 55m. Delta provides one of the quickest options available for as low as $309. 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 34% 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 January is currently the most expensive (average of $174). 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 January 19, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$482FlexibilityNo cancel feeOn-time71%
DeltaCheapest$288Average$344FlexibilityNo cancel feeOn-timeN/A

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