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Ontario

$299+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
LEX — ONT
Apr 9 — Apr 161
Thu 4/9
Thu 4/16
1 adult, Economy
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Find cheap flights from Lexington to Ontario with Cheapflights

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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 March 10, 2026.

This Delta deal was found by Cheapflights users on 3/9. 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.
Tue 7/283:45 pm
LEX
-
ONT
1 stop9h 24m
Delta
Fri 8/710:59 pm
ONT
-
LEX
1 stop7h 25m
Delta
Deal found 3/9$329
This Delta deal was found by Cheapflights users on 3/10. 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.
Tue 7/285:55 pm
LEX
-
ONT
1 stop7h 14m
Delta
Mon 8/1010:59 pm
ONT
-
LEX
1 stop7h 25m
Delta
Deal found 3/10$349
This Delta deal was found by Cheapflights users on 3/9. 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.
Wed 7/295:55 pm
LEX
-
ONT
1 stop7h 14m
Delta
Mon 8/1010:59 pm
ONT
-
LEX
1 stop7h 25m
Delta
Deal found 3/9$354
This Delta deal was found by Cheapflights users on 3/10. 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.
Mon 7/275:55 pm
LEX
-
ONT
1 stop7h 14m
Delta
Mon 8/1010:59 pm
ONT
-
LEX
1 stop7h 25m
Delta
Deal found 3/10$374
This Delta deal was found by Cheapflights users on 3/9. 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.
Fri 7/175:55 pm
LEX
-
ONT
1 stop7h 14m
Delta
Tue 7/2110:59 pm
ONT
-
LEX
1 stop7h 25m
Delta
Deal found 3/9$379
This Delta deal was found by Cheapflights users on 3/9. 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.
Mon 7/275:55 pm
LEX
-
ONT
1 stop7h 14m
Delta
Thu 8/612:00 pm
ONT
-
LEX
1 stop6h 21m
Delta
Deal found 3/9$384
This Delta deal was found by Cheapflights users on 3/9. 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.
Sat 5/167:02 am
LEX
-
ONT
1 stop6h 55m
Delta
Wed 5/206:00 am
ONT
-
LEX
2 stops12h 11m
Delta
Deal found 3/9$389
This American Airlines deal was found by Cheapflights users on 3/6. 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.
Tue 7/288:05 pm
LEX
-
ONT
1 stop6h 54m
American Airlines
Sat 8/81:00 pm
ONT
-
LEX
2 stops8h 07m
American Airlines
Deal found 3/6$404
This American Airlines deal was found by Cheapflights users on 3/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:15 pm
LEX
-
ONT
2 stops8h 19m
American Airlines
Wed 5/209:24 am
ONT
-
LEX
2 stops10h 31m
American Airlines
Deal found 3/9$409
This Delta deal was found by Cheapflights users on 3/9. 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.
Fri 7/315:55 pm
LEX
-
ONT
1 stop7h 14m
Delta
Sun 8/910:59 pm
ONT
-
LEX
1 stop7h 25m
Delta
Deal found 3/9$414
This United Airlines deal was found by Cheapflights users on 3/5. 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 4/286:01 pm
LEX
-
ONT
1 stop7h 30m
United Airlines
Sat 5/27:00 am
ONT
-
LEX
1 stop7h 02m
United Airlines
Deal found 3/5$419

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 March 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$329
(Delta)

One-way from

$299
(Delta)

Popular in

November

Cheapest in

October

Average price

$512
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. 2% potential increase in price ($10 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 10, 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
Quickest round-trip

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 4/28

6:01 pm-10:31 pm

1 stop7h 30m

Ontario

Sat 5/2

7:00 am-5:02 pm

1 stop7h 02m

$419

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 5/2

2:05 pm-6:01 pm

1 stop6h 56m

Ontario

Sun 5/10

7:00 am-6:49 pm

1 stop8h 49m

$419

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 5/9

2:05 pm-6:01 pm

1 stop6h 56m

Ontario

Sun 5/10

7:00 am-6:49 pm

1 stop8h 49m

$419

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 4/1

6:01 pm-10:31 pm

1 stop7h 30m

Ontario

Wed 4/15

6:49 pm-9:20 am

2 stops11h 31m

$424

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 4/14

5:30 am-12:38 pm

2 stops10h 08m

Ontario

Sat 4/25

7:00 am-5:02 pm

1 stop7h 02m

$424

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 4/22

6:00 am-11:36 am

1 stop8h 36m

Ontario

Sun 4/26

10:15 pm-9:35 am

1 stop8h 20m

$439

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Mon 4/20

6:01 pm-10:31 pm

1 stop7h 30m

Ontario

Sat 4/25

10:49 am-11:59 pm

2 stops10h 10m

$469

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 4/15

6:01 pm-10:31 pm

1 stop7h 30m

Ontario

Mon 4/20

6:49 pm-9:20 am

2 stops11h 31m

$485
Cheapest one-way

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 4/18

12:44 pm-6:33 pm

1 stop8h 49m

$299

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 4/17

4:53 pm-9:00 pm

1 stop7h 07m

$299

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/8

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 March.
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

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 $97). Flying from Lexington to Ontario in March is currently the most expensive (average of $200). 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 March 10, 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
8,276 reviews

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

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
7.9
Good
8,276 reviews
Delta
7.9
Good
8,276 reviews

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

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
11,414 reviews
Delta
7.9
Good
8,276 reviews

Boarding

8.1

Overall

7.9

Comfort

7.9

Crew

8.5

Food

7.2

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 7h 30m. United Airlines provides one of the quickest options available for as low as $419. The distance between Lexington and Ontario is about 1852 mi.

  • 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 32% 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 $97). Flying from Lexington to Ontario in March is currently the most expensive (average of $200). 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 March 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$482FlexibilityNo cancel feeOn-time71%
DeltaCheapest$288Average$344FlexibilityNo cancel feeOn-timeN/A

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