HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$249+ 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 7/30. Fares are subject to change and may not be available on all flights or dates of travel.
LEX — ONT
Jul 6 — Jul 131
Sun 7/6
Sun 7/13
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Lexington to Ontario with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 July 1, 2025.

Round-trip from

$289
(Delta)

One-way from

$249
(Delta)

Popular in

December

Cheapest in

May

Average price

$382
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. 18% potential increase in price ($109 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 2025
Search Deals

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 July 1, 2025.

This Delta deal was found by Cheapflights users on 6/29. 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 7/295:50 amLEX - ONT
1 stop7h 40mDelta
Tue 8/1911:45 amONT - LEX
1 stop6h 56mDelta
Deal found 6/29$289
This American Airlines deal was found by Cheapflights users on 6/30. 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 9/176:00 amLEX - ONT
2 stops8h 56mAmerican Airlines
Tue 9/236:10 amONT - LEX
2 stops11h 34mAmerican Airlines
Deal found 6/30$299
This United Airlines deal was found by Cheapflights users on 7/1. 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 8/125:44 pmLEX - ONT
1 stop7h 27mUnited Airlines
Tue 8/261:15 pmONT - LEX
1 stop6h 01mUnited Airlines
Deal found 7/1$379
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/96:00 amLEX - ONT
2 stops11h 46mAlaska Airlines
Tue 8/126:58 pmONT - LEX
2 stops13h 18mAlaska Airlines
Deal found 7/1$533

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 1, 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 7/29

5:50 am-10:30 am

1 stop7h 40m

Ontario

Tue 8/19

11:45 am-9:41 pm

1 stop6h 56m

$289

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 9/17

6:00 am-11:56 am

2 stops8h 56m

Ontario

Tue 9/23

6:10 am-8:44 pm

2 stops11h 34m

$299

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 8/12

5:44 pm-10:11 pm

1 stop7h 27m

Ontario

Sat 8/16

7:00 am-5:01 pm

1 stop7h 01m

$379

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 9/10

6:47 am-6:36 pm

2 stops14h 49m

Ontario

Mon 9/15

7:47 pm-10:39 am

2 stops11h 52m

$510

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 7/30

3:46 pm-10:27 pm

1 stop9h 41m

$249

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 7/30

5:47 am-10:01 am

1 stop7h 14m

$279

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 7/30

7:00 am-10:52 pm

3 stops18h 52m

$334

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Tue 7/15

6:04 am-2:46 pm

2 stops11h 42m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/29

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 July 1, 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 July 1, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and United 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.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,974 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,858 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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.

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

    Delta, at $289, was found to be the cheapest airline from Lexington to Ontario.Alternate airlines to your destination round-trip include American Airlines and United Airlines. Delta is priced at 40% lower than the current average price of a flight leaving 3 months from now.

  • What are the cheapest airlines to fly from Lexington to Ontario one-way?

    For one-way options, check prices for Delta. According to our data, you can fly for as low as $249. Users have also found prices from $279 and $334 on American Airlines and United Airlines, respectively.

  • 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.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Lexington to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
Cincinnati to Las Vegas flights
Nashville to Las Vegas flights
Louisville to Las Vegas flights
Nashville to Los Angeles flights
Cincinnati to Los Angeles flights
Nashville to San Francisco flights
Nashville to San Diego flights
Louisville to Ontario flights
Louisville to Los Angeles flights
Cincinnati to San Francisco flights
Cincinnati to Ontario flights
Nashville to Ontario flights
Nashville to Santa Ana flights
Nashville to Burbank flights
Knoxville to Las Vegas flights
Louisville to San Francisco flights
Lexington to Las Vegas flights
Cincinnati to Santa Ana flights
Cincinnati to San Diego flights
Knoxville to Los Angeles flights
Lexington to Los Angeles flights
Nashville to San Jose flights
Nashville to Sacramento flights
Knoxville to San Diego flights
Knoxville to Santa Ana flights
Louisville to Burbank flights
Cincinnati to Reno flights
Nashville to Oakland flights
Cincinnati to Sacramento flights
Cincinnati to San Jose flights
Nashville to Reno flights
Cincinnati to Burbank flights
Louisville to San Diego flights
Louisville to Santa Ana flights
Nashville to Fresno flights
Lexington to Reno flights
Knoxville to San Francisco flights
Nashville to Long Beach flights
Cincinnati to Long Beach flights
Evansville to Las Vegas flights
Lexington to San Francisco flights
Lexington to Santa Ana flights
Lexington to Sacramento flights
Knoxville to Ontario flights
Knoxville to Sacramento flights
Louisville to Oakland flights
Nashville to Palm Springs flights
Lexington to San Diego flights
Blountville to Las Vegas flights

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 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$288Average$409FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$319Average$429FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.