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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.
Multiple Airlines Logo
11:39 am - 8:01 amSDF  Louisville Intl-ONT Ontario
23h 22m2 stops New Orleans Louis Armstrong Las Vegas Harry Reid Intl
Multiple Airlines Logo
8:02 am - 7:19 pmONT  Ontario-SDF Louisville Intl
8h 17m1 stop San Francisco
$308Multiple Airlines
Mon, Dec 21 - Fri, Dec 25
American Airlines Logo
8:10 am - 3:10 pmSDF  Louisville Intl-ONT Ontario
10h 00m1 stop Charlotte Douglas
American Airlines Logo
11:59 pm - 10:23 amONT  Ontario-SDF Louisville Intl
7h 24m1 stop Dallas/Fort Worth
$341American Airlines
Thu, Dec 24 - Thu, Dec 31
Southwest Logo
6:40 am - 10:10 amSDF  Louisville Intl-ONT Ontario
6h 30m1 stop Denver Intl
Southwest Logo
1:50 pm - 10:50 pmONT  Ontario-SDF Louisville Intl
6h 00m1 stop Denver Intl
$341Southwest
Thu, Jan 28 - Tue, Feb 2
Southwest Logo
6:40 am - 10:10 amSDF  Louisville Intl-ONT Ontario
6h 30m1 stop Denver Intl
Southwest Logo
1:50 pm - 10:50 pmONT  Ontario-SDF Louisville Intl
6h 00m1 stop Denver Intl
$341Southwest
Thu, Jan 28 - Tue, Feb 2
United Airlines Logo
9:00 am - 12:40 pmSDF  Louisville Intl-ONT Ontario
6h 40m1 stop Denver Intl
United Airlines Logo
5:00 am - 2:31 pmONT  Ontario-SDF Louisville Intl
6h 31m1 stop Denver Intl
$341United Airlines
Thu, Jan 28 - Tue, Feb 2
Delta Logo
6:00 am - 11:07 amSDF  Louisville Intl-ONT Ontario
8h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:14 am - 9:50 pmONT  Ontario-SDF Louisville Intl
7h 36m1 stop Atlanta Hartsfield-Jackson
$341Delta
Tue, Dec 15 - Thu, Dec 24
Delta Logo
6:00 am - 11:07 amSDF  Louisville Intl-ONT Ontario
8h 07m1 stop Atlanta Hartsfield-Jackson
Delta Logo
11:14 am - 9:50 pmONT  Ontario-SDF Louisville Intl
7h 36m1 stop Atlanta Hartsfield-Jackson
$341Delta
Wed, Dec 16 - Thu, Dec 24
American Airlines Logo
1:11 pm - 10:15 pmSDF  Louisville Intl-ONT Ontario
12h 04m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl
American Airlines Logo
10:38 am - 8:34 pmONT  Ontario-SDF Louisville Intl
6h 56m1 stop Dallas/Fort Worth
$346American Airlines
Thu, Jan 28 - Tue, Feb 2
American Airlines Logo
8:10 am - 3:10 pmSDF  Louisville Intl-ONT Ontario
10h 00m1 stop Charlotte Douglas
American Airlines Logo
9:35 am - 11:19 pmONT  Ontario-SDF Louisville Intl
10h 44m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth
$346American Airlines
Thu, Dec 24 - Thu, Dec 31
United Airlines Logo
3:35 pm - 9:59 pmSDF  Louisville Intl-ONT Ontario
9h 24m1 stop Houston George Bush Intcntl
United Airlines Logo
5:00 am - 2:17 pmONT  Ontario-SDF Louisville Intl
6h 17m1 stop Denver Intl
$461United Airlines
Mon, Dec 7 - Thu, Dec 10

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Southwest flights from Louisville to Ontario

Our best Southwest deals on Louisville to Ontario flight tickets
Southwest
Jan 28
SDF1:10 pmLouisville Intl
7h 15m
1 stop
ONT5:25 pmOntario
Feb 11
ONT5:05 amOntario
9h 45m
2 stops
SDF5:50 pmLouisville Intl
$346
Southwest
Jan 28
SDF7:30 amLouisville Intl
8h 40m
2 stops
ONT1:10 pmOntario
Feb 11
ONT5:05 amOntario
9h 45m
2 stops
SDF5:50 pmLouisville Intl
$351
Southwest
Jan 28
SDF6:40 amLouisville Intl
6h 30m
1 stop
ONT10:10 amOntario
Feb 11
ONT6:10 amOntario
8h 40m
1 stop
SDF5:50 pmLouisville Intl
$352

United Airlines flights from Louisville to Ontario

Our best United Airlines deals on Louisville to Ontario flight tickets
United Airlines
Jan 28
SDF9:00 amLouisville Intl
6h 40m
1 stop
ONT12:40 pmOntario
Feb 2
ONT5:00 amOntario
6h 31m
1 stop
SDF2:31 pmLouisville Intl
$341
United Airlines
Dec 7
SDF3:35 pmLouisville Intl
9h 24m
1 stop
ONT9:59 pmOntario
Dec 10
ONT5:00 amOntario
6h 17m
1 stop
SDF2:17 pmLouisville Intl
$461
United Airlines
Dec 7
SDF3:35 pmLouisville Intl
9h 24m
1 stop
ONT9:59 pmOntario
Dec 9
ONT5:00 amOntario
8h 39m
2 stops
SDF4:39 pmLouisville Intl
$466

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

Return

Price

Cheapest round-trip

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Mon 12/21

11:39 am-8:01 am

2 stops23h 22m

Ontario

Fri 12/25

8:02 am-7:19 pm

1 stop8h 17m

$308

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 12/24

8:10 am-3:10 pm

1 stop10h 00m

Ontario

Thu 12/31

11:59 pm-10:23 am

1 stop7h 24m

$341
Quickest round-trip

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 1/28

6:40 am-10:10 am

1 stop6h 30m

Ontario

Tue 2/2

1:50 pm-10:50 pm

1 stop6h 00m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 1/28

6:40 am-10:10 am

1 stop6h 30m

Ontario

Tue 2/2

1:50 pm-10:50 pm

1 stop6h 00m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 1/28

9:00 am-12:40 pm

1 stop6h 40m

Ontario

Tue 2/2

5:00 am-2:31 pm

1 stop6h 31m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Tue 12/15

6:00 am-11:07 am

1 stop8h 07m

Ontario

Thu 12/24

11:14 am-9:50 pm

1 stop7h 36m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Wed 12/16

6:00 am-11:07 am

1 stop8h 07m

Ontario

Thu 12/24

11:14 am-9:50 pm

1 stop7h 36m

$341

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 1/28

1:11 pm-10:15 pm

2 stops12h 04m

Ontario

Tue 2/2

10:38 am-8:34 pm

1 stop6h 56m

$346

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Thu 12/24

8:10 am-3:10 pm

1 stop10h 00m

Ontario

Thu 12/31

9:35 am-11:19 pm

2 stops10h 44m

$346

LouisvilleOntario

SDF Louisville Intl - ONT Ontario

SDFONT

Louisville Intl

Mon 12/7

3:35 pm-9:59 pm

1 stop9h 24m

Ontario

Thu 12/10

5:00 am-2:17 pm

1 stop6h 17m

$461

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 typical price of a round-trip flight between Louisville and Ontario?

Prices are currently low for flights on this route.

Typical prices usually range from $553 to $656.
The lowest price recently found on this route was $308.

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 November 2026, prices for Louisville to Ontario flights are approximately 45% 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 15m

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 $308.
The fastest flight from Louisville to Ontario takes 6h 15m
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 15m.

  • 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
7.0
12,228 reviews
Search American Airlines flights
United AirlinesPriceFrom $337Free CancellationRating
7.3
10,462 reviews
Search United Airlines flights
SouthwestPriceFrom $370Free CancellationRating
8.0
4,214 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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