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Ontario

$331+ Cheap flights from Lexington to Ontario (LEX - ONT)

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 9/5. Fares are subject to change and may not be available on all flights or dates of travel.
LEX — ONT
Aug 22 — Aug 291
Sat 8/22
Sat 8/29
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 July 23, 2026.

This Delta deal was found by Cheapflights users on 7/20. 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 9/56:00 am
LEX
-
ONT
1 stop7h 42m
Delta
Sat 9/1212:17 pm
ONT
-
LEX
1 stop8h 37m
Delta
Deal found 7/20$331
This American Airlines deal was found by Cheapflights users on 7/19. 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 10/147:55 pm
LEX
-
ONT
1 stop6h 57m
American Airlines
Mon 10/1911:59 pm
ONT
-
LEX
1 stop9h 01m
American Airlines
Deal found 7/19$340
This Delta deal was found by Cheapflights users on 7/22. 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 8/226:00 am
LEX
-
ONT
1 stop7h 42m
Delta
Sat 8/2912:00 pm
ONT
-
LEX
1 stop7h 46m
Delta
Deal found 7/22$342
This Delta deal was found by Cheapflights users on 7/20. 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 10/165:59 pm
LEX
-
ONT
1 stop7h 02m
Delta
Mon 10/2612:18 pm
ONT
-
LEX
1 stop8h 41m
Delta
Deal found 7/20$349
This Delta deal was found by Cheapflights users on 7/22. 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 10/231:04 pm
LEX
-
ONT
1 stop8h 09m
Delta
Mon 10/2612:18 pm
ONT
-
LEX
1 stop6h 14m
Delta
Deal found 7/22$359
This Delta deal was found by Cheapflights users on 7/20. 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 10/176:00 am
LEX
-
ONT
1 stop8h 08m
Delta
Thu 10/2212:18 pm
ONT
-
LEX
1 stop8h 41m
Delta
Deal found 7/20$365
This Delta deal was found by Cheapflights users on 7/20. 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 10/153:34 pm
LEX
-
ONT
1 stop9h 27m
Delta
Fri 10/2311:15 pm
ONT
-
LEX
1 stop7h 54m
Delta
Deal found 7/20$374
This United Airlines deal was found by Cheapflights users on 7/22. 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 9/105:57 pm
LEX
-
ONT
1 stop8h 02m
United Airlines
Mon 9/141:18 pm
ONT
-
LEX
1 stop6h 20m
United Airlines
Deal found 7/22$380
This Delta deal was found by Cheapflights users on 7/23. 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 8/86:00 am
LEX
-
ONT
1 stop7h 42m
Delta
Sat 8/157:05 am
ONT
-
LEX
1 stop9h 04m
Delta
Deal found 7/23$394
This Delta deal was found by Cheapflights users on 7/20. 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 10/153:34 pm
LEX
-
ONT
1 stop9h 27m
Delta
Thu 10/2212:18 pm
ONT
-
LEX
1 stop8h 41m
Delta
Deal found 7/20$399

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 July 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$331
(Delta)

Popular in

September

Cheapest in

June

Average price

$370
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
Highest demand for flights based on searches. 4% potential increase in price ($23 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2026
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 July 23, 2026.
Use the filters below to find and compare flights from Lexington to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 9/9

6:00 am-11:05 am

1 stop8h 05m

Ontario

Fri 9/18

10:00 pm-10:07 am

1 stop9h 07m

$340

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/16

5:59 pm-10:01 pm

1 stop7h 02m

Ontario

Mon 10/26

12:18 pm-11:59 pm

1 stop8h 41m

$349

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/23

5:59 pm-10:01 pm

1 stop7h 02m

Ontario

Mon 10/26

12:18 pm-11:59 pm

1 stop8h 41m

$349

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/23

1:04 pm-6:13 pm

1 stop8h 09m

Ontario

Sun 11/1

7:05 am-5:14 pm

1 stop7h 09m

$359

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 12/23

5:55 pm-10:14 pm

1 stop7h 19m

Ontario

Tue 12/29

10:59 pm-9:26 am

1 stop7h 27m

$365
Quickest round-trip

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Thu 9/10

5:57 pm-10:59 pm

1 stop8h 02m

Ontario

Mon 9/14

1:18 pm-10:38 pm

1 stop6h 20m

$380

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 8/8

6:00 am-10:42 am

1 stop7h 42m

Ontario

Sat 8/15

7:05 am-7:09 pm

1 stop9h 04m

$394

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Thu 12/24

5:55 pm-10:14 pm

1 stop7h 19m

Ontario

Wed 12/30

10:59 pm-9:26 am

1 stop7h 27m

$414

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 10/14

7:55 pm-11:52 pm

1 stop6h 57m

Ontario

Mon 10/19

7:34 pm-9:50 am

2 stops11h 16m

$425
Cheapest one-way

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/9

7:10 am-11:08 am

1 stop6h 58m

$374

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/19

Showing 1-10 of 20 resultsSorted by cheapest first
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 July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub the most. FlightHub 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

How much does it cost to fly round-trip from Lexington to Ontario?

Airfare is below average for this route at the moment.

Lexington to Ontario flights typically cost between $376 and $502 in September.
The cheapest round-trip price found within the last 5 days was $331 on Delta (Sep 5-Sep 12).

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 July 23, 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
7.8
Good
8,479 reviews

Overall

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Crew

8.5

Entertainment

7.8

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
7.8
Good
8,479 reviews
Delta
7.8
Good
8,479 reviews

Overall

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Crew

8.5

Entertainment

7.8

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
7.1
Good
11,832 reviews
Delta
7.8
Good
8,479 reviews

Overall

7.8

Boarding

8.1

Comfort

7.8

Food

7.2

Crew

8.5

Entertainment

7.8

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 8h 05m. Delta provides one of the quickest options available for as low as $340. The distance between Lexington and Ontario is about 1852 mi.

  • 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 37% 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.

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 July 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$344FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$339Average$434FlexibilityNo cancel feeOn-time71%

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