What is the cheapest airline that flies from Ontario to Louisiana?

Delta, Southwest, and Alaska Airlines are the most popular carriers operating from Ontario to Louisiana

What airlines fly to Louisiana?

Delta, Breeze Airways and Southwest are the top three most popular airlines that fly to Louisiana from Ontario according to our data. Delta is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Louisiana. Keep in mind that there are 7 different airlines that fly to Louisiana on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Ontario Airport to Louisiana?

Prices for flights from Ontario Airport to Louisiana were last updated today.

How many operators does momondo search for flights from Ontario Airport to Louisiana?

As of August 2026, there are 5 operators available to choose from for flights from Ontario Airport to Louisiana.

How old do you have to be to fly from Ontario Airport to Louisiana?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Louisiana.

What documentation or ID do you need to fly to Louisiana?

The travel and health documents required for your trip to Louisiana can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Louisiana. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$106 Cheap Flights from Ontario to Louisiana in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Louisiana

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:07 am - 5:08 pmONT Ontario-MSY New Orleans Louis Armstrong

7h 01m1 stop Dallas/Fort Worth

3:35 pm - 11:55 pmMSY New Orleans Louis Armstrong-ONT Ontario

10h 20m1 stop Denver Intl

$212Frontier

Thu, Oct 29 - Wed, Nov 4

6:00 am - 2:40 pmONT Ontario-MSY New Orleans Louis Armstrong

6h 40m1 stop Denver Intl

3:35 pm - 11:55 pmMSY New Orleans Louis Armstrong-ONT Ontario

10h 20m1 stop Denver Intl

$212Frontier

Mon, Oct 12 - Wed, Oct 14

2:30 pm - 5:10 amONT Ontario-MSY New Orleans Louis Armstrong

12h 40m1 stop Las Vegas Harry Reid Intl

9:00 pm - 7:04 amMSY New Orleans Louis Armstrong-ONT Ontario

12h 04m1 stop Las Vegas Harry Reid Intl

$260Multiple Airlines

Wed, Sep 30 - Sun, Oct 4

2:58 pm - 5:00 amONT Ontario-MSY New Orleans Louis Armstrong

12h 02m1 stop Las Vegas Harry Reid Intl

6:05 pm - 9:53 amMSY New Orleans Louis Armstrong-ONT Ontario

17h 48m1 stop Dallas/Fort Worth

$273Multiple Airlines

Fri, Oct 23 - Tue, Oct 27

7:00 am - 2:55 pmONT Ontario-MSY New Orleans Louis Armstrong

5h 55m1 stop Dallas/Fort Worth

7:43 am - 11:52 amMSY New Orleans Louis Armstrong-ONT Ontario

6h 09m1 stop Dallas/Fort Worth

$311American Airlines

Tue, Dec 8 - Sat, Dec 12

12:43 pm - 10:59 pmONT Ontario-MSY New Orleans Louis Armstrong

8h 16m1 stop Dallas/Fort Worth

5:39 am - 11:55 amMSY New Orleans Louis Armstrong-ONT Ontario

8h 16m1 stop Dallas/Fort Worth

$311American Airlines

Sat, Jan 16 - Wed, Jan 27

3:10 pm - 10:55 pmONT Ontario-MSY New Orleans Louis Armstrong

5h 45m1 stop Las Vegas Harry Reid Intl

5:35 pm - 9:40 pmMSY New Orleans Louis Armstrong-ONT Ontario

6h 05m1 stop Denver Intl

$311Southwest

Sat, Oct 17 - Wed, Oct 21

5:45 pm - 1:00 amONT Ontario-MSY New Orleans Louis Armstrong

5h 15m1 stop Las Vegas Harry Reid Intl

3:55 pm - 9:20 pmMSY New Orleans Louis Armstrong-ONT Ontario

7h 25m1 stop Las Vegas Harry Reid Intl

$311Southwest

Mon, Sep 28 - Tue, Oct 6

6:00 am - 1:51 pmONT Ontario-MSY New Orleans Louis Armstrong

5h 51m1 stop Salt Lake City

6:21 am - 11:05 amMSY New Orleans Louis Armstrong-ONT Ontario

6h 44m1 stop Atlanta Hartsfield-Jackson

$311Delta

Wed, Sep 30 - Sat, Oct 3

11:10 pm - 10:03 amONT Ontario-MSY New Orleans Louis Armstrong

8h 53m1 stop Atlanta Hartsfield-Jackson

5:20 am - 11:10 amMSY New Orleans Louis Armstrong-ONT Ontario

7h 50m1 stop Atlanta Hartsfield-Jackson

$311Delta

Mon, Nov 9 - Tue, Nov 17

Cheap last minute flights

Enter your travel dates to find the best prices.

10:49 am - 9:03 pmONT Ontario-MSY New Orleans Louis Armstrong

8h 14m1 stop Denver Intl

9:48 pm - 10:04 amMSY New Orleans Louis Armstrong-ONT Ontario

14h 16m1 stop Denver Intl

$424Frontier

Thu, Aug 13 - Sun, Aug 16

10:49 am - 9:03 pmONT Ontario-MSY New Orleans Louis Armstrong

8h 14m1 stop Denver Intl

9:36 pm - 10:04 amMSY New Orleans Louis Armstrong-ONT Ontario

14h 28m1 stop Denver Intl

$424Frontier

Sun, Aug 16 - Thu, Aug 20

2:27 pm - 10:41 pmONT Ontario-SHV Shreveport

6h 14m1 stop Dallas/Fort Worth

8:20 am - 11:43 amSHV Shreveport-ONT Ontario

5h 23m1 stop Dallas/Fort Worth

$479American Airlines

Fri, Aug 14 - Tue, Aug 18

9:01 am - 9:19 pmONT Ontario-SHV Shreveport

10h 18m2 stops San Francisco Houston George Bush Intcntl

8:22 am - 12:50 pmSHV Shreveport-ONT Ontario

6h 28m1 stop Denver Intl

$484United Airlines

Fri, Aug 14 - Tue, Aug 18

6:08 am - 5:11 pmONT Ontario-SHV Shreveport

9h 03m2 stops San Francisco Houston George Bush Intcntl

8:22 am - 6:11 pmSHV Shreveport-ONT Ontario

11h 49m2 stops Denver Intl San Francisco

$489United Airlines

Fri, Aug 14 - Tue, Aug 18

10:00 pm - 9:39 amONT Ontario-BTR Baton Rouge Ryan

9h 39m1 stop Atlanta Hartsfield-Jackson

3:57 pm - 9:52 pmBTR Baton Rouge Ryan-ONT Ontario

7h 55m1 stop Atlanta Hartsfield-Jackson

$554Delta

Fri, Aug 14 - Mon, Aug 17

5:05 pm - 9:39 amONT Ontario-BTR Baton Rouge Ryan

14h 34m2 stops Salt Lake City Atlanta Hartsfield-Jackson

3:57 pm - 9:52 pmBTR Baton Rouge Ryan-ONT Ontario

7h 55m1 stop Atlanta Hartsfield-Jackson

$559Delta

Fri, Aug 14 - Mon, Aug 17

4:09 pm - 5:00 amONT Ontario-MSY New Orleans Louis Armstrong

10h 51m1 stop Las Vegas Harry Reid Intl

8:00 am - 3:54 pmMSY New Orleans Louis Armstrong-ONT Ontario

33h 54m2 stops Orlando Las Vegas Harry Reid Intl

$580Multiple Airlines

Fri, Aug 14 - Mon, Aug 17

4:09 pm - 5:00 amONT Ontario-MSY New Orleans Louis Armstrong

10h 51m1 stop Las Vegas Harry Reid Intl

6:17 pm - 8:38 amMSY New Orleans Louis Armstrong-ONT Ontario

40h 21m2 stops Orlando Dallas/Fort Worth

$584Multiple Airlines

Mon, Aug 17 - Fri, Aug 21

12:59 pm - 10:55 pmONT Ontario-BTR Baton Rouge Ryan

7h 56m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

11:14 am - 6:15 pmBTR Baton Rouge Ryan-ONT Ontario

9h 01m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

$718American Airlines

Fri, Aug 14 - Mon, Aug 17

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Frontier flights from Ontario to Louisiana

Our best Frontier deals on Ontario to Louisiana flight tickets

Frontier

Sep 10

ONT11:45 amOntario

20h 08m

1 stop

MSY9:53 amNew Orleans Louis Armstrong

Sep 17

MSY9:00 pmNew Orleans Louis Armstrong

16h 22m

1 stop

ONT11:22 amOntario

$212

Frontier

Sep 10

ONT11:45 amOntario

20h 08m

1 stop

MSY9:53 amNew Orleans Louis Armstrong

Sep 14

MSY9:00 pmNew Orleans Louis Armstrong

21h 59m

1 stop

ONT4:59 pmOntario

$222

Frontier

Sep 18

ONT8:00 amOntario

10h 04m

1 stop

MSY8:04 pmNew Orleans Louis Armstrong

Oct 1

MSY9:00 pmNew Orleans Louis Armstrong

12h 04m

1 stop

ONT7:04 amOntario

$236

Southwest flights from Ontario to Louisiana

Our best Southwest deals on Ontario to Louisiana flight tickets

Southwest

Sep 12

ONT11:55 amOntario

5h 00m

1 stop

MSY6:55 pmNew Orleans Louis Armstrong

Sep 16

MSY4:15 pmNew Orleans Louis Armstrong

7h 50m

1 stop

ONT10:05 pmOntario

$312

Southwest

Aug 26

ONT5:45 amOntario

8h 00m

2 stops

MSY3:45 pmNew Orleans Louis Armstrong

Aug 31

MSY5:10 amNew Orleans Louis Armstrong

6h 45m

2 stops

ONT9:55 amOntario

$488

Southwest

Aug 25

ONT12:30 pmOntario

5h 00m

1 stop

MSY7:30 pmNew Orleans Louis Armstrong

Aug 27

MSY6:15 pmNew Orleans Louis Armstrong

5h 30m

1 stop

ONT9:45 pmOntario

$607

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Thu 10/29

8:07 am-5:08 pm

1 stop7h 01m

New Orleans Louis Armstrong

Wed 11/4

3:35 pm-11:55 pm

1 stop10h 20m

$212

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Mon 10/12

6:00 am-2:40 pm

1 stop6h 40m

New Orleans Louis Armstrong

Wed 10/14

3:35 pm-11:55 pm

1 stop10h 20m

$212

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Wed 9/30

2:30 pm-5:10 am

1 stop12h 40m

New Orleans Louis Armstrong

Sun 10/4

9:00 pm-7:04 am

1 stop12h 04m

$260

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Fri 10/23

2:58 pm-5:00 am

1 stop12h 02m

New Orleans Louis Armstrong

Tue 10/27

6:05 pm-9:53 am

1 stop17h 48m

$273

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Tue 12/8

7:00 am-2:55 pm

1 stop5h 55m

New Orleans Louis Armstrong

Sat 12/12

7:43 am-11:52 am

1 stop6h 09m

$311

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Sat 1/16

12:43 pm-10:59 pm

1 stop8h 16m

New Orleans Louis Armstrong

Wed 1/27

5:39 am-11:55 am

1 stop8h 16m

$311

Quickest round-trip

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Sat 10/17

3:10 pm-10:55 pm

1 stop5h 45m

New Orleans Louis Armstrong

Wed 10/21

5:35 pm-9:40 pm

1 stop6h 05m

$311

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Mon 9/28

5:45 pm-1:00 am

1 stop5h 15m

New Orleans Louis Armstrong

Tue 10/6

3:55 pm-9:20 pm

1 stop7h 25m

$311

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Wed 9/30

6:00 am-1:51 pm

1 stop5h 51m

New Orleans Louis Armstrong

Sat 10/3

6:21 am-11:05 am

1 stop6h 44m

$311

OntarioNew Orleans

ONT Ontario - MSY New Orleans Louis Armstrong

ONTMSY

Ontario

Mon 11/9

11:10 pm-10:03 am

1 stop8h 53m

New Orleans Louis Armstrong

Tue 11/17

5:20 am-11:10 am

1 stop7h 50m

$311

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Ontario to Louisiana

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

Prices

Airlines

What is the cheapest month to fly to Louisiana?

In general, September is the cheapest month to fly from Ontario to Louisiana. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $370. The month of January is another great option to travel to Louisiana, with average flight prices from Ontario averaging around $389.

How far in advance should I book a flight from Ontario to Louisiana?

You are more likely to see cheaper flights to Louisiana from Ontario when booking weeks ahead of your departure date. In general, you can expect to find flights to Louisiana for around $440 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Louisiana from Ontario for as low as $317 on momondo.

Can stopping save me money on Ontario to Louisiana flights?

You could potentially save up to 45% on your flight if you consider stops on a Ontario to Louisiana flight.

Cheap Ontario to Louisiana flight deals and tips

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

Fastest flight time	4h 55m
Direct flights	None

The fastest flight from Ontario to Louisiana takes 4h 55m

There are no direct flights from Ontario to Louisiana. There are no popular flight routes from Ontario to Louisiana.

Search flight deals

Frequently asked questions about flying from Ontario to Louisiana

When did momondo last update prices for flights from Ontario Airport to Louisiana?
Prices for flights from Ontario Airport to Louisiana were last updated today.
How many operators does momondo search for flights from Ontario Airport to Louisiana?
As of August 2026, there are 5 operators available to choose from for flights from Ontario Airport to Louisiana.
How old do you have to be to fly from Ontario Airport to Louisiana?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Louisiana.
What documentation or ID do you need to fly to Louisiana?
The travel and health documents required for your trip to Louisiana can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Louisiana. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Ontario to Louisiana

Compare and see reviews for airlines that fly from Ontario to Louisiana with momondo

Airline	Rating	Free Cancellation	Price
Frontier	PriceFrom $95	Free Cancellation	Rating 5.6 2,701 reviews	Search Frontier flights
Delta	PriceFrom $177	Free Cancellation	Rating 7.8 8,505 reviews	Search Delta flights
United Airlines	PriceFrom $248	Free Cancellation	Rating 7.4 10,111 reviews	Search United Airlines flights
American Airlines	PriceFrom $248	Free Cancellation	Rating 7.1 11,911 reviews	Search American Airlines flights
Southwest	PriceFrom $333	Free Cancellation	Rating 8.0 4,218 reviews	Search Southwest flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Ontario to Louisiana. Millions of users trust and use momondo every year so you are in good hands.

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

Flights from Ontario to Louisiana with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

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

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

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