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Cheap flights from Louisville to Los Angeles from $171

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Louisville to Los Angeles

Cheap round-trip flights

Enter your travel dates to find the best prices.
Southwest Logo
3:00 pm - 8:50 pmSDF  Louisville Intl-ONT Ontario
8h 50m1 stop Dallas Love Field
Southwest Logo
11:55 pm - 10:05 amONT  Ontario-SDF Louisville Intl
7h 10m1 stop Chicago Midway
$341Southwest
Tue, Oct 6 - Tue, Oct 13
Delta Logo
7:00 am - 11:27 amSDF  Louisville Intl-ONT Ontario
7h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:00 pm - 12:02 amONT  Ontario-SDF Louisville Intl
9h 02m1 stop Atlanta Hartsfield-Jackson
$341Delta
Tue, Jan 5 - Sat, Jan 9
Delta Logo
7:00 am - 11:27 amSDF  Louisville Intl-ONT Ontario
7h 27m1 stop Atlanta Hartsfield-Jackson
Delta Logo
12:00 pm - 12:02 amONT  Ontario-SDF Louisville Intl
9h 02m1 stop Atlanta Hartsfield-Jackson
$341Delta
Tue, Jan 5 - Wed, Jan 6
Delta Logo
1:59 pm - 8:25 pmSDF  Louisville Intl-ONT Ontario
9h 26m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:08 pm - 8:57 amONT  Ontario-SDF Louisville Intl
6h 49m1 stop Atlanta Hartsfield-Jackson
$341Delta
Tue, Oct 13 - Mon, Oct 19
Southwest Logo
2:05 pm - 8:50 pmSDF  Louisville Intl-ONT Ontario
9h 45m2 stops Chicago Midway Dallas Love Field
Southwest Logo
11:55 pm - 10:05 amONT  Ontario-SDF Louisville Intl
7h 10m1 stop Chicago Midway
$346Southwest
Tue, Oct 6 - Tue, Oct 13
Southwest Logo
3:35 pm - 10:15 pmSDF  Louisville Intl-ONT Ontario
9h 40m2 stops Chicago Midway Denver Intl
Southwest Logo
11:55 pm - 10:05 amONT  Ontario-SDF Louisville Intl
7h 10m1 stop Chicago Midway
$394Southwest
Fri, Oct 2 - Mon, Oct 5
Southwest Logo
3:35 pm - 10:15 pmSDF  Louisville Intl-ONT Ontario
9h 40m2 stops Chicago Midway Denver Intl
Southwest Logo
9:30 pm - 10:05 amONT  Ontario-SDF Louisville Intl
9h 35m2 stops Las Vegas Harry Reid Intl Chicago Midway
$399Southwest
Fri, Oct 2 - Mon, Oct 5
American Airlines Logo
4:25 pm - 10:37 pmSDF  Louisville Intl-ONT Ontario
9h 12m1 stop Dallas/Fort Worth
American Airlines Logo
11:59 pm - 10:24 amONT  Ontario-SDF Louisville Intl
7h 25m1 stop Dallas/Fort Worth
$404American Airlines
Wed, Sep 30 - Sun, Oct 11
American Airlines Logo
6:00 am - 9:35 amSDF  Louisville Intl-ONT Ontario
6h 35m1 stop Dallas/Fort Worth
American Airlines Logo
6:00 am - 3:17 pmONT  Ontario-SDF Louisville Intl
6h 17m1 stop Dallas/Fort Worth
$408American Airlines
Thu, Oct 29 - Wed, Nov 4
American Airlines Logo
6:00 am - 12:06 pmSDF  Louisville Intl-ONT Ontario
9h 06m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl
American Airlines Logo
11:59 pm - 10:24 amONT  Ontario-SDF Louisville Intl
7h 25m1 stop Dallas/Fort Worth
$409American Airlines
Wed, Sep 30 - Sun, Oct 11

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Southwest flights from Louisville to Ontario

Our best Southwest deals on Louisville to Ontario flight tickets
Southwest
Oct 6
SDF2:05 pmLouisville Intl
9h 45m
2 stops
ONT8:50 pmOntario
Oct 13
ONT11:55 pmOntario
7h 10m
1 stop
SDF10:05 amLouisville Intl
$346
Southwest
Oct 2
SDF3:35 pmLouisville Intl
9h 40m
2 stops
ONT10:15 pmOntario
Oct 5
ONT11:55 pmOntario
7h 10m
1 stop
SDF10:05 amLouisville Intl
$394
Southwest
Oct 2
SDF3:35 pmLouisville Intl
9h 40m
2 stops
ONT10:15 pmOntario
Oct 5
ONT9:30 pmOntario
9h 35m
2 stops
SDF10:05 amLouisville Intl
$399

Delta flights from Louisville to Ontario

Our best Delta deals on Louisville to Ontario flight tickets
Delta
Jan 5
SDF7:00 amLouisville Intl
7h 27m
1 stop
ONT11:27 amOntario
Jan 6
ONT12:00 pmOntario
9h 02m
1 stop
SDF12:02 amLouisville Intl
$341
Delta
Oct 2
SDF3:43 pmLouisville Intl
9h 41m
1 stop
ONT10:24 pmOntario
Oct 5
ONT10:00 pmOntario
9h 21m
1 stop
SDF10:21 amLouisville Intl
$354
Delta
Oct 14
SDF6:00 amLouisville Intl
8h 06m
1 stop
ONT11:06 amOntario
Oct 19
ONT11:08 pmOntario
6h 49m
1 stop
SDF8:57 amLouisville Intl
$390

momondo Fare Finder

 
Use the filters below to find and compare flights from Louisville to Ontario that are best for you.

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Route

Depart

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Price

Cheapest round-trip

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Tue 10/6

3:00 pm-8:50 pm

1 stop8h 50m

Ontario

Tue 10/13

11:55 pm-10:05 am

1 stop7h 10m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Tue 1/5

7:00 am-11:27 am

1 stop7h 27m

Ontario

Sat 1/9

12:00 pm-12:02 am

1 stop9h 02m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Tue 1/5

7:00 am-11:27 am

1 stop7h 27m

Ontario

Wed 1/6

12:00 pm-12:02 am

1 stop9h 02m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Tue 10/13

1:59 pm-8:25 pm

1 stop9h 26m

Ontario

Mon 10/19

11:08 pm-8:57 am

1 stop6h 49m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Tue 10/6

2:05 pm-8:50 pm

2 stops9h 45m

Ontario

Tue 10/13

11:55 pm-10:05 am

1 stop7h 10m

$346

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Fri 10/2

3:35 pm-10:15 pm

2 stops9h 40m

Ontario

Mon 10/5

11:55 pm-10:05 am

1 stop7h 10m

$394

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Fri 10/2

3:35 pm-10:15 pm

2 stops9h 40m

Ontario

Mon 10/5

9:30 pm-10:05 am

2 stops9h 35m

$399

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Wed 9/30

4:25 pm-10:37 pm

1 stop9h 12m

Ontario

Sun 10/11

11:59 pm-10:24 am

1 stop7h 25m

$404
Quickest round-trip

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 10/29

6:00 am-9:35 am

1 stop6h 35m

Ontario

Wed 11/4

6:00 am-3:17 pm

1 stop6h 17m

$408

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Wed 9/30

6:00 am-12:06 pm

2 stops9h 06m

Ontario

Sun 10/11

11:59 pm-10:24 am

1 stop7h 25m

$409

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Louisville 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

What is the cheapest month to fly to Ontario?

In general, March is the cheapest month to fly from Louisville to Ontario. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $359. If you aren’t able to travel during the month of March, then book flights to Ontario from Louisville during February instead. Flights to Ontario in February, while not as cheap as those in March, still average around $398.

How have Louisville to Ontario flight prices changed over time?

As of September 2026, prices for Louisville to Ontario flights are approximately 7% cheaper when compared to flights at the same time last year.

When to book flights from Louisville to Ontario

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

Cheap Louisville to Ontario (SDF to ONT) flight deals and tips

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

Best Price Found

$171

Fastest flight time

6h 57m

Direct flights

None
The best one-way flight to Ontario from Louisville in the past 72 hours is $171. The best round-trip flight deal from Louisville to Ontario found on momondo in the last 72 hours is $341.
The fastest flight from Louisville to Ontario takes 6h 57m
There are no direct flights from Louisville to Ontario. There are no popular flight routes from Louisville to Ontario.
Search flight deals

Frequently asked questions about flying from Louisville to Ontario

  • How far is Louisville Intl to Ontario by plane?

    Ontario is 1792.4 mi away from Louisville Intl. In terms of flight time, this usually takes a little over 6h 57m.

  • When did momondo last update prices for flights from Louisville Intl Airport to Ontario Airport?

    Prices for flights from Louisville Intl Airport to Ontario Airport refresh daily.

  • How many operators does momondo search for flights from Louisville Intl Airport to Ontario Airport?

  • How old do you have to be to fly from Louisville Intl 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 Louisville Intl Airport to Ontario Airport.

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

    The necessary travel and health documents for your Ontario 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 Louisville to Ontario?

Best airlines flying from Louisville to Ontario

Compare and see reviews for airlines that fly from Louisville to Ontario with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $324Free CancellationRating
7.1
12,047 reviews
Search American Airlines flights
SouthwestPriceFrom $370Free CancellationRating
8.0
4,195 reviews
Search Southwest flights

Why use momondo?

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

It is quick and easy to find Louisville to Ontario flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Ontario that suits you.

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

Yes. All flights to Ontario from Louisville on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once all potential Louisville 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 Louisville to Ontario right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Louisville to Ontario flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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