Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from Ontario to Lexington from $145

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Lexington departing on 12/25. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Ontario to Lexington

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:30 pm - 9:42 am
ONT
-
LEX
8h 12m1 stop
Delta Logo
5:00 pm - 9:05 pm
LEX
-
ONT
7h 05m1 stop
$329Delta
Wed, Feb 4 - Tue, Feb 10
Delta Logo
10:30 pm - 9:42 am
ONT
-
LEX
8h 12m1 stop
Delta Logo
5:35 pm - 11:58 pm
LEX
-
ONT
9h 23m2 stops
$334Delta
Wed, Feb 4 - Tue, Feb 10
Delta Logo
10:59 pm - 9:24 am
ONT
-
LEX
7h 25m1 stop
Delta Logo
5:55 pm - 10:09 pm
LEX
-
ONT
7h 14m1 stop
$354Delta
Wed, May 6 - Tue, May 12
United Airlines Logo
1:24 pm - 10:30 pm
ONT
-
LEX
6h 06m1 stop
United Airlines Logo
10:30 am - 8:58 pm
LEX
-
ONT
13h 28m2 stops
$384United Airlines
Wed, Feb 4 - Sat, Feb 7
Delta Logo
10:59 pm - 9:24 am
ONT
-
LEX
7h 25m1 stop
Delta Logo
11:00 am - 6:15 pm
LEX
-
ONT
10h 15m2 stops
$403Delta
Fri, Apr 17 - Tue, Apr 28
United Airlines Logo
1:24 pm - 10:30 pm
ONT
-
LEX
6h 06m1 stop
United Airlines Logo
2:00 pm - 8:58 pm
LEX
-
ONT
9h 58m2 stops
$404United Airlines
Wed, Feb 4 - Sat, Feb 7
American Airlines Logo
10:39 pm - 10:45 am
ONT
-
LEX
9h 06m1 stop
American Airlines Logo
7:10 am - 1:54 pm
LEX
-
ONT
9h 44m1 stop
$419American Airlines
Thu, Feb 12 - Tue, Feb 17
American Airlines Logo
10:39 pm - 10:45 am
ONT
-
LEX
9h 06m1 stop
American Airlines Logo
7:10 am - 4:26 pm
LEX
-
ONT
12h 16m2 stops
$424American Airlines
Thu, Feb 12 - Tue, Feb 17
American Airlines Logo
7:50 pm - 10:45 am
ONT
-
LEX
11h 55m2 stops
American Airlines Logo
7:10 am - 4:26 pm
LEX
-
ONT
12h 16m2 stops
$429American Airlines
Thu, Feb 12 - Tue, Feb 17
American Airlines Logo
10:39 pm - 10:45 am
ONT
-
LEX
9h 06m1 stop
American Airlines Logo
7:08 pm - 11:58 pm
LEX
-
ONT
7h 50m1 stop
$444American Airlines
Thu, Feb 12 - Mon, Feb 16

American Airlines flights from Ontario to Lexington

Our best American Airlines deals on Ontario to Lexington flight tickets
American Airlines
Feb 12
ONT10:39 pmOntario
9h 06m
1 stop
LEX10:45 amLexington Blue Grass
Feb 17
LEX7:10 amLexington Blue Grass
9h 44m
1 stop
ONT1:54 pmOntario
$419
Find similar
American Airlines
Feb 12
ONT10:39 pmOntario
9h 06m
1 stop
LEX10:45 amLexington Blue Grass
Feb 17
LEX7:10 amLexington Blue Grass
12h 16m
2 stops
ONT4:26 pmOntario
$424
Find similar
American Airlines
Feb 12
ONT7:50 pmOntario
11h 55m
2 stops
LEX10:45 amLexington Blue Grass
Feb 17
LEX7:10 amLexington Blue Grass
12h 16m
2 stops
ONT4:26 pmOntario
$429
Find similar

United Airlines flights from Ontario to Lexington

Our best United Airlines deals on Ontario to Lexington flight tickets
United Airlines
Feb 4
ONT1:24 pmOntario
6h 06m
1 stop
LEX10:30 pmLexington Blue Grass
Feb 7
LEX10:30 amLexington Blue Grass
13h 28m
2 stops
ONT8:58 pmOntario
$384
Find similar
United Airlines
Feb 4
ONT1:24 pmOntario
6h 06m
1 stop
LEX10:30 pmLexington Blue Grass
Feb 7
LEX2:00 pmLexington Blue Grass
9h 58m
2 stops
ONT8:58 pmOntario
$404
Find similar
United Airlines
Feb 4
ONT1:24 pmOntario
30h 16m
2 stops
LEX10:40 pmLexington Blue Grass
Feb 7
LEX2:00 pmLexington Blue Grass
11h 53m
2 stops
ONT10:53 pmOntario
$462
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Ontario to Lexington 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, momondo users made 832,500 searches. Data last updated December 11, 2025.
Use the filters below to find and compare flights from Ontario to Lexington that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 2/4

10:30 pm-9:42 am

1 stop8h 12m

Lexington Blue Grass

Tue 2/10

5:00 pm-9:05 pm

1 stop7h 05m

$329

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 2/4

10:30 pm-9:42 am

1 stop8h 12m

Lexington Blue Grass

Tue 2/10

5:35 pm-11:58 pm

2 stops9h 23m

$334

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 5/6

10:59 pm-9:24 am

1 stop7h 25m

Lexington Blue Grass

Tue 5/12

5:55 pm-10:09 pm

1 stop7h 14m

$354

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 2/4

1:24 pm-10:30 pm

1 stop6h 06m

Lexington Blue Grass

Sat 2/7

10:30 am-8:58 pm

2 stops13h 28m

$384

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Fri 4/17

10:59 pm-9:24 am

1 stop7h 25m

Lexington Blue Grass

Tue 4/28

11:00 am-6:15 pm

2 stops10h 15m

$403

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 2/4

1:24 pm-10:30 pm

1 stop6h 06m

Lexington Blue Grass

Sat 2/7

2:00 pm-8:58 pm

2 stops9h 58m

$404

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Thu 2/12

10:39 pm-10:45 am

1 stop9h 06m

Lexington Blue Grass

Tue 2/17

7:10 am-1:54 pm

1 stop9h 44m

$419

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Thu 2/12

10:39 pm-10:45 am

1 stop9h 06m

Lexington Blue Grass

Tue 2/17

7:10 am-4:26 pm

2 stops12h 16m

$424

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Thu 2/12

7:50 pm-10:45 am

2 stops11h 55m

Lexington Blue Grass

Tue 2/17

7:10 am-4:26 pm

2 stops12h 16m

$429

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Thu 2/12

10:39 pm-10:45 am

1 stop9h 06m

Lexington Blue Grass

Mon 2/16

7:08 pm-11:58 pm

1 stop7h 50m

$444

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Lexington from

How to get the cheapest flight ticket from Ontario to Lexington

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

What is the cheapest month to fly to Lexington?

In general, August is the cheapest month to fly from Ontario to Lexington. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $288. If you are unable to visit Lexington during the month of August, then departing from Ontario during the month September is also very affordable. Most momondo users find prices during this month for around $288.

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

On average, the least expensive day to fly to Lexington from Ontario is on a Thursday. momondo users have found tickets for Thursday departures for as low as $388. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Ontario because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $456.

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

The cheapest time of day to fly to Lexington is in the evening when flights can be purchased for as low as $382. Try not to purchase tickets in the afternoon because they tend to be around $526. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on Ontario to Lexington flights?

You could potentially save up to 9% on your flight if you consider stops on a Ontario to Lexington flight.

When to book flights from Ontario to Lexington

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

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

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

Fastest flight time

6h 06m

Direct flights

None
The fastest flight from Ontario to Lexington takes 6h 06m
There are no direct flights from Ontario to Lexington. There are no popular flight routes from Ontario to Lexington.
Search flight deals

  • How far is Ontario to Lexington Blue Grass by plane?

    There are 1860.7 mi between Ontario and Lexington Blue Grass. 6h 06m is a normal flight duration for this route.

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

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

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

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

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Ontario Airport to Lexington Blue Grass Airport.

  • What documentation or ID do you need to fly to Lexington Blue Grass Airport?

    The necessary travel and health documents for your Lexington Blue Grass Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Ontario to Lexington?

Best airlines flying from Ontario to Lexington

Compare and see reviews for airlines that fly from Ontario to Lexington with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $288Free CancellationRating
7.2
11,050 reviews
Search American Airlines flights
DeltaPriceFrom $288Free CancellationRating
7.9
8,007 reviews
Search Delta flights

Traveling to a place near Lexington?

Book flights to Lexington if you plan to visit one of these locations
Richmond
Somerset
Georgetown
Danville
Frankfort
Winchester
Berea
Carlisle
Versailles

Why use momondo?

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

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Lexington from Ontario.

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

All flight searches from Ontario to Lexington on momondo can be filtered to show those which offer flexible booking policies.

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

momondo provides multiple filters to help you find the best flight to Lexington from Ontario. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

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

Of course. momondo tracks the price of Ontario to Lexington flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

An easier way to manage your Lexington trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 1/10
Sat 1/17
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States