What is the cheapest airline that flies from Lexington Blue Grass to Ontario?

United Airlines, American Airlines, and Delta are the most popular carriers operating from Lexington Blue Grass to Ontario

What airlines fly to Ontario?

Delta, American Airlines and Frontier are the top three most popular airlines that fly to Ontario from Lexington according to our data. Delta is the first choice among our users, with 37% of people opting to fly with this airline when traveling to Ontario. Keep in mind that there are 7 different airlines that fly to Ontario on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Lexington Blue Grass Airport to Ontario Airport?

Prices for flights from Lexington Blue Grass Airport to Ontario Airport refresh daily.

How many operators does momondo search for flights from Lexington Blue Grass Airport to Ontario Airport?

There are 2 operators available for flights from Lexington Blue Grass Airport to Ontario Airport as of December 2025.

How old do you have to be to fly from Lexington Blue Grass Airport to Ontario Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lexington Blue Grass Airport to Ontario Airport.

What documentation or ID do you need to fly to Ontario Airport?

The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$184 Cheap Flights from Lexington to Ontario in 2025/26

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Find the cheapest flights from Lexington to Los Angeles

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Cheap round-trip flights

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2:17 pm - 9:05 pm

LEX

ONT

9h 48m1 stop

12:41 pm - 11:53 pm

ONT

LEX

8h 12m1 stop

$293Delta

Tue, Jan 13 - Tue, Jan 20

7:41 am - 2:18 pm

LEX

ONT

9h 37m1 stop

9:59 am - 11:23 pm

ONT

LEX

10h 24m2 stops

$298American Airlines

Tue, Jan 13 - Tue, Jan 20

8:07 am - 6:20 pm

LEX

ONT

13h 13m2 stops

9:59 am - 11:23 pm

ONT

LEX

10h 24m2 stops

$303American Airlines

Tue, Jan 13 - Tue, Jan 20

2:59 pm - 10:13 pm

LEX

ONT

10h 14m2 stops

10:59 am - 9:57 pm

ONT

LEX

7h 58m1 stop

$314American Airlines

Fri, Feb 6 - Wed, Mar 4

2:59 pm - 10:13 pm

LEX

ONT

10h 14m2 stops

6:13 am - 9:11 pm

ONT

LEX

11h 58m2 stops

$319American Airlines

Fri, Feb 6 - Wed, Mar 4

2:17 pm - 9:05 pm

LEX

ONT

9h 48m1 stop

10:30 pm - 9:42 am

ONT

LEX

8h 12m1 stop

$348Delta

Sat, Jan 17 - Tue, Jan 20

4:38 pm - 9:05 pm

LEX

ONT

7h 27m1 stop

10:20 pm - 9:29 am

ONT

LEX

8h 09m1 stop

$360Delta

Fri, Feb 6 - Wed, Mar 4

2:17 pm - 9:05 pm

LEX

ONT

9h 48m1 stop

10:30 pm - 9:42 am

ONT

LEX

8h 12m1 stop

$364Delta

Sat, Jan 17 - Mon, Jan 19

2:00 pm - 10:53 pm

LEX

ONT

11h 53m2 stops

1:24 pm - 10:30 pm

ONT

LEX

6h 06m1 stop

$372United Airlines

Sat, Jan 17 - Tue, Jan 20

2:17 pm - 9:05 pm

LEX

ONT

9h 48m1 stop

10:30 pm - 9:42 am

ONT

LEX

8h 12m1 stop

$378Delta

Fri, Jan 16 - Tue, Jan 20

Delta flights from Lexington to Ontario

Our best Delta deals on Lexington to Ontario flight tickets

Delta

Jan 13

LEX2:17 pmLexington Blue Grass

9h 48m

1 stop

ONT9:05 pmOntario

Jan 20

ONT12:41 pmOntario

8h 12m

1 stop

LEX11:53 pmLexington Blue Grass

$293

Find similar

Delta

Jan 17

LEX2:17 pmLexington Blue Grass

9h 48m

1 stop

ONT9:05 pmOntario

Jan 20

ONT10:30 pmOntario

8h 12m

1 stop

LEX9:42 amLexington Blue Grass

$348

Find similar

Delta

Feb 6

LEX4:38 pmLexington Blue Grass

7h 27m

1 stop

ONT9:05 pmOntario

Mar 4

ONT10:20 pmOntario

8h 09m

1 stop

LEX9:29 amLexington Blue Grass

$360

Find similar

American Airlines flights from Lexington to Ontario

Our best American Airlines deals on Lexington to Ontario flight tickets

American Airlines

Jan 13

LEX7:41 amLexington Blue Grass

9h 37m

1 stop

ONT2:18 pmOntario

Jan 20

ONT9:59 amOntario

10h 24m

2 stops

LEX11:23 pmLexington Blue Grass

$298

Find similar

American Airlines

Jan 13

LEX8:07 amLexington Blue Grass

13h 13m

2 stops

ONT6:20 pmOntario

Jan 20

ONT9:59 amOntario

10h 24m

2 stops

LEX11:23 pmLexington Blue Grass

$303

Find similar

American Airlines

Feb 6

LEX2:59 pmLexington Blue Grass

10h 14m

2 stops

ONT10:13 pmOntario

Mar 4

ONT10:59 amOntario

7h 58m

1 stop

LEX9:57 pmLexington Blue Grass

$314

Find similar

Fly from

Fly to

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

7:41 am-2:18 pm

1 stop9h 37m

Ontario

Tue 1/20

9:59 am-11:23 pm

2 stops10h 24m

$298

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

2:59 pm-10:13 pm

2 stops10h 14m

Ontario

Wed 3/4

10:59 am-9:57 pm

1 stop7h 58m

$314

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 2/6

2:59 pm-10:13 pm

2 stops10h 14m

Ontario

Wed 3/4

6:13 am-9:11 pm

2 stops11h 58m

$319

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 1/17

2:17 pm-9:05 pm

1 stop9h 48m

Ontario

Tue 1/20

10:30 pm-9:42 am

1 stop8h 12m

$348

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 2/6

4:38 pm-9:05 pm

1 stop7h 27m

Ontario

Wed 3/4

10:20 pm-9:29 am

1 stop8h 09m

$360

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 1/17

2:17 pm-9:05 pm

1 stop9h 48m

Ontario

Mon 1/19

10:30 pm-9:42 am

1 stop8h 12m

$364

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 1/17

2:00 pm-10:53 pm

2 stops11h 53m

Ontario

Tue 1/20

1:24 pm-10:30 pm

1 stop6h 06m

$372

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 1/16

2:17 pm-9:05 pm

1 stop9h 48m

Ontario

Tue 1/20

10:30 pm-9:42 am

1 stop8h 12m

$378

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Lexington to Ontario

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

What is the cheapest day to depart on your flight to Ontario?

The cheapest day to depart on your flight to Ontario is on a Saturday when prices can be found for as low as $347. This is often the case because there is less demand to fly during this day of the week. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Lexington to Ontario for around $779.

What is the cheapest time of day to depart on your flight to Ontario?

In the morning is the cheapest time of day to fly from Lexington to Ontario when you can find flight prices for as low as $387. Flying to Ontario in the morning is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $509 on average. Flights to Ontario from Lexington in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from Lexington to Ontario

Are you open to changing your travel dates? Check out the ideal times to fly from Lexington to Ontario according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Lexington to Ontario (LEX to ONT) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Lexington to Ontario

Fastest flight time	6h 43m
Direct flights	None

The fastest flight from Lexington to Ontario takes 6h 43m

There are no direct flights from Lexington to Ontario. There are no popular flight routes from Lexington to Ontario.

Search flight deals

How far is Lexington Blue Grass to Ontario by plane?
The straight-line distance from Lexington Blue Grass to Ontario is 1860.7 mi. Flights usually cover this in 6h 43m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from Lexington Blue Grass Airport to Ontario Airport?
Prices for flights from Lexington Blue Grass Airport to Ontario Airport refresh daily.
How many operators does momondo search for flights from Lexington Blue Grass Airport to Ontario Airport?
There are 2 operators available for flights from Lexington Blue Grass Airport to Ontario Airport as of December 2025.
How old do you have to be to fly from Lexington Blue Grass Airport to Ontario Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lexington Blue Grass Airport to Ontario Airport.
What documentation or ID do you need to fly to Ontario Airport?
The travel and health documents required for your trip to Ontario Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Ontario Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.
What is the most popular airline from Lexington to Ontario?
Based on momondo bookings for flights between Lexington and Ontario, the leading airline is Delta, making up 54% of the total bookings. Other popular airlines include American Airlines with 46%.

Best airlines flying from Lexington to Ontario

Compare and see reviews for airlines that fly from Lexington to Ontario with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $288	Free Cancellation	Rating 7.9 8,005 reviews		Search Delta flights
American Airlines	PriceFrom $313	Free Cancellation	Rating 7.2 11,054 reviews		Search American Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Lexington to Ontario?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Lexington to Ontario for you.

Can I find flights from Lexington to Ontario with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Lexington to Ontario flights to just show those with flexible booking policies.

How can momondo help me find flights from Lexington to Ontario?

Once all potential Lexington to Ontario flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Lexington to Ontario right now. Can momondo alert me if prices change?

Price alerts on flights to Ontario from Lexington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.