How does KAYAK find such low prices on flights from Kentucky to Ontario?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kentucky to Ontario.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kentucky to Ontario?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Kentucky is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Kentucky to Ontario?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Kentucky with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kentucky to Ontario?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Kentucky up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$170 CHEAP FLIGHTS from Kentucky to Ontario

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Flight Deals

Cheap Flights from Kentucky to Ontario

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Recent round-trip flight deals from Kentucky to Ontario

Sat, Oct 24 - Sat, Oct 31

6:00 am - 9:35 amSDF Louisville Intl-ONT Ontario

6h 35m1 stop Dallas/Fort Worth

12:43 pm - 11:27 pmONT Ontario-SDF Louisville Intl

7h 44m1 stop Dallas/Fort Worth

$341American Airlines

Wed, Nov 4 - Wed, Nov 11

4:35 pm - 10:12 pmSDF Louisville Intl-ONT Ontario

8h 37m1 stop Charlotte Douglas

2:22 pm - 11:34 pmONT Ontario-SDF Louisville Intl

6h 12m1 stop Dallas/Fort Worth

$341American Airlines

Tue, Nov 17 - Thu, Nov 26

6:00 am - 11:03 amSDF Louisville Intl-ONT Ontario

8h 03m1 stop Atlanta Hartsfield-Jackson

7:05 am - 7:14 pmONT Ontario-SDF Louisville Intl

9h 09m1 stop Atlanta Hartsfield-Jackson

$341Delta

Wed, Oct 28 - Tue, Nov 3

6:00 am - 11:06 amSDF Louisville Intl-ONT Ontario

8h 06m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 10:47 pmONT Ontario-SDF Louisville Intl

7h 31m1 stop Atlanta Hartsfield-Jackson

$341Delta

Tue, Oct 20 - Tue, Oct 27

6:00 am - 9:35 amSDF Louisville Intl-ONT Ontario

6h 35m1 stop Dallas/Fort Worth

12:43 pm - 11:27 pmONT Ontario-SDF Louisville Intl

7h 44m1 stop Dallas/Fort Worth

$341American Airlines

Sat, Oct 31 - Tue, Nov 3

1:59 pm - 7:30 pmSDF Louisville Intl-ONT Ontario

8h 31m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 10:47 pmONT Ontario-SDF Louisville Intl

7h 31m1 stop Atlanta Hartsfield-Jackson

$341Delta

Tue, Oct 20 - Tue, Oct 27

7:10 pm - 10:05 pmSDF Louisville Intl-ONT Ontario

5h 55m1 stop Phoenix Sky Harbor Intl

10:25 am - 8:35 pmONT Ontario-SDF Louisville Intl

7h 10m2 stops Denver Intl Nashville Intl

$346Southwest

Wed, Nov 4 - Wed, Nov 11

10:37 am - 6:01 pmSDF Louisville Intl-ONT Ontario

10h 24m2 stops Chicago O'Hare Intl San Francisco

5:00 am - 2:22 pmONT Ontario-SDF Louisville Intl

6h 22m1 stop Denver Intl

$346United Airlines

Wed, Nov 4 - Wed, Nov 11

8:50 am - 2:40 pmSDF Louisville Intl-ONT Ontario

8h 50m2 stops Chicago Midway Denver Intl

5:45 am - 6:55 pmONT Ontario-SDF Louisville Intl

10h 10m2 stops Las Vegas Harry Reid Intl Phoenix Sky Harbor Intl

$375Southwest

Thu, Oct 29 - Sat, Oct 31

9:00 am - 12:30 pmLEX Lexington Blue Grass-ONT Ontario

6h 30m1 stop Denver Intl

9:25 am - 11:54 pmONT Ontario-LEX Lexington Blue Grass

11h 29m2 stops San Francisco Chicago O'Hare Intl

$375United Airlines

Recent last minute flight deals from Kentucky to Ontario

Sat, Oct 3 - Tue, Oct 6

6:10 pm - 10:49 pmLEX Lexington Blue Grass-ONT Ontario

7h 39m1 stop Chicago O'Hare Intl

7:00 am - 5:11 pmONT Ontario-LEX Lexington Blue Grass

7h 11m1 stop Chicago O'Hare Intl

$585United Airlines

Sat, Oct 3 - Tue, Oct 6

6:10 pm - 10:49 pmLEX Lexington Blue Grass-ONT Ontario

7h 39m1 stop Chicago O'Hare Intl

6:00 am - 8:28 pmONT Ontario-LEX Lexington Blue Grass

11h 28m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$590United Airlines

Sat, Oct 3 - Sat, Oct 3

5:05 pm - 9:20 pmSDF Louisville Intl-ONT Ontario

7h 15m1 stop Chicago Midway

11:55 pm - 10:35 amONT Ontario-SDF Louisville Intl

7h 40m1 stop Chicago Midway

$601Southwest

Sat, Oct 3 - Wed, Oct 14

1:37 pm - 6:41 pmSDF Louisville Intl-ONT Ontario

8h 04m1 stop Atlanta Hartsfield-Jackson

12:16 pm - 11:59 pmONT Ontario-SDF Louisville Intl

8h 43m1 stop Atlanta Hartsfield-Jackson

$601Delta

Sat, Oct 3 - Tue, Oct 13

1:37 pm - 6:41 pmSDF Louisville Intl-ONT Ontario

8h 04m1 stop Atlanta Hartsfield-Jackson

7:07 am - 4:49 pmONT Ontario-SDF Louisville Intl

6h 42m1 stop Atlanta Hartsfield-Jackson

$601Delta

Sat, Oct 3 - Sat, Oct 3

12:55 pm - 5:55 pmSDF Louisville Intl-ONT Ontario

8h 00m2 stops Denver Intl Phoenix Sky Harbor Intl

11:55 pm - 10:35 amONT Ontario-SDF Louisville Intl

7h 40m1 stop Chicago Midway

$646Southwest

Sat, Oct 3 - Tue, Oct 6

6:00 am - 12:46 pmLEX Lexington Blue Grass-ONT Ontario

9h 46m2 stops Chicago O'Hare Intl Denver Intl

6:00 am - 8:28 pmONT Ontario-LEX Lexington Blue Grass

11h 28m2 stops Houston George Bush Intcntl Chicago O'Hare Intl

$667United Airlines

Thu, Oct 1 - Thu, Oct 15

8:24 am - 11:47 amSDF Louisville Intl-ONT Ontario

6h 23m1 stop Dallas/Fort Worth

7:34 pm - 9:32 amONT Ontario-SDF Louisville Intl

10h 58m2 stops Phoenix Sky Harbor Intl Chicago O'Hare Intl

$689American Airlines

Thu, Oct 1 - Thu, Oct 15

7:15 am - 2:00 pmSDF Louisville Intl-ONT Ontario

9h 45m2 stops Nashville Intl Las Vegas Harry Reid Intl

9:30 pm - 10:10 amONT Ontario-SDF Louisville Intl

9h 40m2 stops Las Vegas Harry Reid Intl Chicago Midway

$694Southwest

Fri, Oct 2 - Sun, Oct 4

8:24 am - 1:25 pmSDF Louisville Intl-ONT Ontario

8h 01m1 stop Dallas/Fort Worth

12:37 pm - 11:27 pmONT Ontario-SDF Louisville Intl

7h 50m1 stop Dallas/Fort Worth

$761American Airlines

Useful Info

Low season	January
High season	October
Cheapest flight	$170

Best time to beat the crowds with an average 8% drop in price.

Most popular time to fly and prices are also 16% lower on average.

Flight from Louisville to Ontario

How does KAYAK find such low prices on flights from Kentucky to Ontario?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Kentucky to Ontario.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Kentucky to Ontario?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Ontario from Kentucky is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Kentucky to Ontario?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Ontario with an airline and back to Kentucky with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Kentucky to Ontario?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Ontario from Kentucky up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.