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Cheap flights from Ontario to Lexington from $250

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

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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 - 10:27 amONT-LEX
8h 57m1 stop
Delta Logo
5:00 pm - 9:05 pmLEX-ONT
7h 05m1 stop
$289Delta
Find Deal
Sat, Jan 17 - Wed, Jan 21
Delta Logo
10:30 pm - 10:27 amONT-LEX
8h 57m1 stop
Delta Logo
5:00 pm - 11:58 pmLEX-ONT
9h 58m2 stops
$294Delta
Find Deal
Sat, Jan 17 - Wed, Jan 21
Delta Logo
6:00 am - 8:01 pmONT-LEX
11h 01m2 stops
Delta Logo
5:00 pm - 11:58 pmLEX-ONT
9h 58m2 stops
$324Delta
Find Deal
Sat, Jan 17 - Wed, Jan 21
Multiple Airlines Logo
6:15 am - 1:42 pmONT-LEX
28h 27m1 stop
Multiple Airlines Logo
10:21 pm - 5:42 pmLEX-ONT
22h 21m1 stop
$358Multiple Airlines
Find Deal
Wed, Dec 17 - Sat, Dec 27
American Airlines Logo
8:05 pm - 10:32 amONT-LEX
11h 27m2 stops
American Airlines Logo
8:12 pm - 11:40 pmLEX-ONT
6h 28m1 stop
$383American Airlines
Find Deal
Fri, May 1 - Wed, May 20
United Airlines Logo
1:24 pm - 10:30 pmONT-LEX
6h 06m1 stop
United Airlines Logo
2:00 pm - 8:58 pmLEX-ONT
9h 58m2 stops
$384United Airlines
Find Deal
Wed, Jan 7 - Sat, Jan 10
Multiple Airlines Logo
6:00 am - 1:42 pmONT-LEX
28h 42m1 stop
Multiple Airlines Logo
10:21 pm - 9:27 pmLEX-ONT
26h 06m1 stop
$386Multiple Airlines
Find Deal
Sat, Dec 20 - Sat, Dec 27
United Airlines Logo
6:10 am - 10:40 pmONT-LEX
13h 30m2 stops
United Airlines Logo
10:30 am - 8:58 pmLEX-ONT
13h 28m2 stops
$389United Airlines
Find Deal
Wed, Jan 7 - Sat, Jan 10
Multiple Airlines Logo
6:00 pm - 9:32 pmONT-LEX
24h 32m1 stop
Multiple Airlines Logo
10:21 pm - 5:42 pmLEX-ONT
22h 21m1 stop
$397Multiple Airlines
Find Deal
Mon, Dec 22 - Sat, Dec 27
Multiple Airlines Logo
6:00 am - 9:32 pmONT-LEX
12h 32m1 stop
Multiple Airlines Logo
10:21 pm - 5:42 pmLEX-ONT
22h 21m1 stop
$398Multiple Airlines
Find Deal
Tue, Dec 23 - Sat, Dec 27

Delta flights from Ontario to Lexington

Our best Delta deals on Ontario to Lexington flight tickets
Delta
Jan 17
ONT10:30 pmOntario
8h 57m
1 stop
LEX10:27 amLexington Blue Grass
Jan 21
LEX5:00 pmLexington Blue Grass
7h 05m
1 stop
ONT9:05 pmOntario
$289
Find similar
Delta
Jan 17
ONT10:30 pmOntario
8h 57m
1 stop
LEX10:27 amLexington Blue Grass
Jan 21
LEX5:00 pmLexington Blue Grass
9h 58m
2 stops
ONT11:58 pmOntario
$294
Find similar
Delta
Jan 17
ONT6:00 amOntario
11h 01m
2 stops
LEX8:01 pmLexington Blue Grass
Jan 21
LEX5:00 pmLexington Blue Grass
9h 58m
2 stops
ONT11:58 pmOntario
$324
Find similar

American Airlines flights from Ontario to Lexington

Our best American Airlines deals on Ontario to Lexington flight tickets
American Airlines
May 1
ONT8:05 pmOntario
11h 27m
2 stops
LEX10:32 amLexington Blue Grass
May 20
LEX8:12 pmLexington Blue Grass
6h 28m
1 stop
ONT11:40 pmOntario
$383
Find similar
American Airlines
May 1
ONT8:05 pmOntario
11h 27m
2 stops
LEX10:32 amLexington Blue Grass
May 20
LEX12:01 pmLexington Blue Grass
8h 45m
2 stops
ONT5:46 pmOntario
$439
Find similar
American Airlines
May 1
ONT11:04 pmOntario
8h 21m
1 stop
LEX10:25 amLexington Blue Grass
May 20
LEX8:12 pmLexington Blue Grass
6h 28m
1 stop
ONT11:40 pmOntario
$473
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 November 21, 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

Sat 1/17

10:30 pm-10:27 am

1 stop8h 57m

Lexington Blue Grass

Wed 1/21

5:00 pm-9:05 pm

1 stop7h 05m

$289

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 1/17

10:30 pm-10:27 am

1 stop8h 57m

Lexington Blue Grass

Wed 1/21

5:00 pm-11:58 pm

2 stops9h 58m

$294

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 1/17

6:00 am-8:01 pm

2 stops11h 01m

Lexington Blue Grass

Wed 1/21

5:00 pm-11:58 pm

2 stops9h 58m

$324

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 12/17

6:15 am-1:42 pm

1 stop28h 27m

Lexington Blue Grass

Sat 12/27

10:21 pm-5:42 pm

1 stop22h 21m

$358

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Fri 5/1

8:05 pm-10:32 am

2 stops11h 27m

Lexington Blue Grass

Wed 5/20

8:12 pm-11:40 pm

1 stop6h 28m

$383

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 1/7

1:24 pm-10:30 pm

1 stop6h 06m

Lexington Blue Grass

Sat 1/10

2:00 pm-8:58 pm

2 stops9h 58m

$384

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Sat 12/20

6:00 am-1:42 pm

1 stop28h 42m

Lexington Blue Grass

Sat 12/27

10:21 pm-9:27 pm

1 stop26h 06m

$386

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Wed 1/7

6:10 am-10:40 pm

2 stops13h 30m

Lexington Blue Grass

Sat 1/10

10:30 am-8:58 pm

2 stops13h 28m

$389

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Mon 12/22

6:00 pm-9:32 pm

1 stop24h 32m

Lexington Blue Grass

Sat 12/27

10:21 pm-5:42 pm

1 stop22h 21m

$397

OntarioLexington

ONT - LEX

ONTLEX

Ontario

Tue 12/23

6:00 am-9:32 pm

1 stop12h 32m

Lexington Blue Grass

Sat 12/27

10:21 pm-5:42 pm

1 stop22h 21m

$398

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 33% 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

Direct flights

None
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. 5h 32m 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
11,047 reviews
Search American Airlines flights
DeltaPriceFrom $288Free CancellationRating
7.9
8,002 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.

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