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

Delta, American Airlines, and United Airlines 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 38% 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 October 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.

$99 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

Enter your travel dates to find the best prices.

5:55 am - 11:38 amLEX-ONT

8h 43m1 stop

10:30 pm - 9:25 amONT-LEX

7h 55m1 stop

$289Delta

Find Deal

Sat, Feb 28 - Wed, Mar 4

3:52 pm - 9:36 pmLEX-ONT

8h 44m1 stop

1:00 pm - 12:20 amONT-LEX

8h 20m2 stops

$294American Airlines

Find Deal

Wed, Oct 29 - Sat, Nov 1

10:49 am - 6:35 pmLEX-ONT

10h 46m2 stops

10:09 am - 11:21 pmONT-LEX

10h 12m2 stops

$299American Airlines

Find Deal

Wed, Oct 29 - Sat, Nov 1

5:57 pm - 10:22 pmLEX-ONT

7h 25m1 stop

10:25 pm - 9:27 amONT-LEX

8h 02m1 stop

$314Delta

Find Deal

Fri, Nov 7 - Sun, Nov 9

5:55 am - 11:38 amLEX-ONT

8h 43m1 stop

5:05 pm - 9:25 amONT-LEX

13h 20m2 stops

$319Delta

Find Deal

Sat, Feb 28 - Wed, Mar 4

3:46 pm - 10:22 pmLEX-ONT

9h 36m1 stop

10:00 pm - 9:20 amONT-LEX

8h 20m1 stop

$339Delta

Find Deal

Fri, Oct 17 - Tue, Oct 21

6:01 pm - 10:30 pmLEX-ONT

7h 29m1 stop

7:02 am - 5:20 pmONT-LEX

7h 18m1 stop

$364United Airlines

Find Deal

Wed, Oct 15 - Sun, Oct 19

10:37 am - 8:24 pmLEX-ONT

12h 47m2 stops

7:02 am - 5:20 pmONT-LEX

7h 18m1 stop

$370United Airlines

Find Deal

Wed, Oct 15 - Sun, Oct 19

11:04 am - 11:29 pmLEX-ONT

15h 25m2 stops

6:00 am - 11:14 pmONT-LEX

14h 14m2 stops

$640Alaska Airlines

Find Deal

Fri, Dec 5 - Mon, Dec 15

6:50 am - 6:33 pmLEX-ONT

14h 43m2 stops

7:43 pm - 10:42 amONT-LEX

11h 59m2 stops

$724Alaska Airlines

Find Deal

Fri, Oct 17 - Tue, Oct 21

American Airlines flights from Lexington to Ontario

Our best American Airlines deals on Lexington to Ontario flight tickets

American Airlines

Oct 29

LEX3:52 pmLexington Blue Grass

8h 44m

1 stop

ONT9:36 pmOntario

Nov 1

ONT1:00 pmOntario

8h 20m

2 stops

LEX12:20 amLexington Blue Grass

$294

Find similar

American Airlines

Oct 29

LEX10:49 amLexington Blue Grass

10h 46m

2 stops

ONT6:35 pmOntario

Nov 1

ONT10:09 amOntario

10h 12m

2 stops

LEX11:21 pmLexington Blue Grass

$299

Find similar

American Airlines

Oct 9

LEX6:30 amLexington Blue Grass

6h 37m

1 stop

ONT10:07 amOntario

Oct 12

ONT11:59 pmOntario

8h 42m

1 stop

LEX11:41 amLexington Blue Grass

$449

Find similar

United Airlines flights from Lexington to Ontario

Our best United Airlines deals on Lexington to Ontario flight tickets

United Airlines

Oct 15

LEX6:01 pmLexington Blue Grass

7h 29m

1 stop

ONT10:30 pmOntario

Oct 19

ONT7:02 amOntario

7h 18m

1 stop

LEX5:20 pmLexington Blue Grass

$364

Find similar

United Airlines

Oct 15

LEX10:37 amLexington Blue Grass

12h 47m

2 stops

ONT8:24 pmOntario

Oct 19

ONT7:02 amOntario

7h 18m

1 stop

LEX5:20 pmLexington Blue Grass

$370

Find similar

United Airlines

Oct 25

LEX2:10 pmLexington Blue Grass

6h 56m

1 stop

ONT6:06 pmOntario

Oct 31

ONT1:29 pmOntario

5h 55m

1 stop

LEX10:24 pmLexington Blue Grass

$380

Find similar

Fly from

Fly to

Route

Depart

Return

Price

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/28

5:55 am-11:38 am

1 stop8h 43m

Ontario

Wed 3/4

10:30 pm-9:25 am

1 stop7h 55m

$289

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 10/29

3:52 pm-9:36 pm

1 stop8h 44m

Ontario

Sat 11/1

1:00 pm-12:20 am

2 stops8h 20m

$294

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 10/29

10:49 am-6:35 pm

2 stops10h 46m

Ontario

Sat 11/1

10:09 am-11:21 pm

2 stops10h 12m

$299

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 11/7

5:57 pm-10:22 pm

1 stop7h 25m

Ontario

Sun 11/9

10:25 pm-9:27 am

1 stop8h 02m

$314

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Sat 2/28

5:55 am-11:38 am

1 stop8h 43m

Ontario

Wed 3/4

5:05 pm-9:25 am

2 stops13h 20m

$319

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/17

3:46 pm-10:22 pm

1 stop9h 36m

Ontario

Tue 10/21

10:00 pm-9:20 am

1 stop8h 20m

$339

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 10/15

6:01 pm-10:30 pm

1 stop7h 29m

Ontario

Sun 10/19

7:02 am-5:20 pm

1 stop7h 18m

$364

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Wed 10/15

10:37 am-8:24 pm

2 stops12h 47m

Ontario

Sun 10/19

7:02 am-5:20 pm

1 stop7h 18m

$370

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 12/5

11:04 am-11:29 pm

2 stops15h 25m

Ontario

Mon 12/15

6:00 am-11:14 pm

2 stops14h 14m

$640

LexingtonOntario

LEX - ONT

LEXONT

Lexington Blue Grass

Fri 10/17

6:50 am-6:33 pm

2 stops14h 43m

Ontario

Tue 10/21

7:43 pm-10:42 am

2 stops11h 59m

$724

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 month to fly to Ontario?

In general, October is the cheapest month to fly from Lexington to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $358. If you aren’t able to travel during the month of October, then book flights to Ontario from Lexington during May instead. Flights to Ontario in May, while not as cheap as those in October, still average around $368.

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

Direct flights	None

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

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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 24m, 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 October 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 53% of the total bookings. Other popular airlines include American Airlines with 47%.

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 7,962 reviews		Search Delta flights
American Airlines	PriceFrom $313	Free Cancellation	Rating 7.2 10,000 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.