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$118+ Cheap flights from Ontario (ONT) to Louisiana

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/24. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSY
Aug 4 — Aug 111
Mon 8/4
Mon 8/11
1 adult, Economy
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Cheap flight deals from Ontario to Louisiana

Keep the following information in mind while searching for Ontario to Louisiana flight deals. Data was last updated July 30, 2025.

Round-trip from

$237
(American Airlines)

One-way from

$118
(Alaska Airlines)

Popular in

December

Cheapest in

September

Average price

$310
From Ontario to Louisiana
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One-way flight from Ontario to Louisiana
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Highest demand for flights based on searches. 9% potential increase in price ($33 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in July 2025
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Find flight deals from Ontario to Louisiana

Cheapest flights from Ontario to Louisiana
Explore the most affordable flight options available from Ontario to Louisiana. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

This Alaska Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:55 pmONT - MSY
1 stop8h 37mAlaska Airlines
Tue 12/163:30 pmMSY - ONT
1 stop9h 07mAlaska Airlines
Deal found 7/28$236
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/1010:53 amONT - MSY
1 stop7h 28mAmerican Airlines
Wed 9/177:00 amMSY - ONT
1 stop6h 57mAmerican Airlines
Deal found 7/29$237
This Cheapflightsfares deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/2310:46 amONT - MSY
1 stop6h 07mFrontier
Fri 10/247:38 pmMSY - ONT
1 stop6h 12mFrontier
Deal found 7/28$245
This Delta deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2111:45 amONT - MSY
1 stop8h 31mDelta
Wed 8/271:05 pmMSY - ONT
1 stop8h 06mDelta
Deal found 7/29$276
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/2911:45 amONT - BTR
1 stop8h 28mDelta
Mon 9/16:00 amBTR - ONT
1 stop6h 35mDelta
Deal found 7/30$289
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/211:59 pmONT - BTR
1 stop7h 39mAmerican Airlines
Sat 9/610:08 amBTR - ONT
2 stops10h 08mAmerican Airlines
Deal found 7/29$294
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/96:00 amONT - MSY
1 stop8h 57mHawaiian Airlines
Fri 9/127:17 amMSY - ONT
1 stop8h 55mHawaiian Airlines
Deal found 7/29$304
This American Airlines deal was found by Cheapflights users on 7/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/612:47 pmONT - SHV
1 stop6h 03mAmerican Airlines
Thu 9/186:20 pmSHV - ONT
1 stop7h 39mAmerican Airlines
Deal found 7/29$324
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/276:04 amONT - MSY
1 stop7h 56mUnited Airlines
Wed 9/32:23 pmMSY - ONT
1 stop10h 07mUnited Airlines
Deal found 7/28$327
This Delta deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/1411:45 amONT - LFT
1 stop8h 26mDelta
Mon 8/184:00 pmLFT - ONT
1 stop8h 20mDelta
Deal found 7/30$339
This United Airlines deal was found by Cheapflights users on 7/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/146:00 amONT - LFT
1 stop5h 21mUnited Airlines
Mon 8/185:15 amLFT - ONT
2 stops14h 28mUnited Airlines
Deal found 7/30$344
This United Airlines deal was found by Cheapflights users on 7/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/186:00 amONT - SHV
1 stop7h 30mUnited Airlines
Sun 8/244:11 pmSHV - ONT
1 stop7h 14mUnited Airlines
Deal found 7/28$349

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Louisiana 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, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
Use the filters below to find and compare flights from Ontario to Louisiana that are best for you.

Fly from

Ontario

Fly to

Louisiana

Route

Depart

Return

Price

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Wed 9/10

10:53 am-8:21 pm

1 stop7h 28m

New Orleans Louis Armstrong

Wed 9/17

7:00 am-11:57 am

1 stop6h 57m

$237

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Thu 10/23

10:46 am-6:53 pm

1 stop6h 07m

New Orleans Louis Armstrong

Fri 10/24

7:38 pm-11:50 pm

1 stop6h 12m

$245

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Wed 10/15

7:47 pm-5:49 am

1 stop8h 02m

New Orleans Louis Armstrong

Wed 10/22

5:34 pm-12:03 am

1 stop8h 29m

$256

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Thu 8/21

7:05 am-5:50 pm

1 stop8h 45m

New Orleans Louis Armstrong

Wed 8/27

1:05 pm-7:11 pm

1 stop8h 06m

$276

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Fri 8/29

11:45 am-10:13 pm

1 stop8h 28m

Baton Rouge Ryan

Mon 9/1

6:00 am-10:35 am

1 stop6h 35m

$289

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 9/2

11:59 pm-9:38 am

1 stop7h 39m

Baton Rouge Ryan

Sat 9/6

10:08 am-6:16 pm

2 stops10h 08m

$294

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Tue 9/9

6:00 am-4:57 pm

1 stop8h 57m

New Orleans Louis Armstrong

Fri 9/12

7:17 am-2:12 pm

1 stop8h 55m

$304

OntarioShreveport

ONT - SHV

ONTSHV

Ontario

Sat 9/6

12:47 pm-8:50 pm

1 stop6h 03m

Shreveport

Thu 9/18

6:20 pm-11:59 pm

1 stop7h 39m

$324

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Wed 8/27

6:04 am-4:00 pm

1 stop7h 56m

New Orleans Louis Armstrong

Wed 9/3

2:23 pm-10:30 pm

1 stop10h 07m

$327

OntarioLafayette

ONT - LFT

ONTLFT

Ontario

Thu 8/14

11:45 am-10:11 pm

1 stop8h 26m

Lafayette Regional

Mon 8/18

4:00 pm-10:20 pm

1 stop8h 20m

$339

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 32 results
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Best time to book a flight from Ontario to Louisiana

Have a flexible travel schedule? Discover the best time to fly to Louisiana from Ontario with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Ontario to Louisiana

What is the cheapest month to book a flight from Ontario to Louisiana?

Currently, August is the cheapest month in which you can book a flight from Ontario to Louisiana (average of $256). Flying from Ontario to Louisiana in April is currently the most expensive (average of $343). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ONT to LA?

Find hourly flight availability from Ontario to Louisiana. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 30, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Ontario to Louisiana as you normally would.

Reviews of airlines servicing Louisiana

Get insights into the airlines that provide service to Louisiana. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Louisiana. Reviews last updated July 30, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Ontario to Louisiana have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Overall

8.0

Food

7.1

Comfort

7.8

Boarding

8.1

Entertainment

7.1

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Louisiana. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Ontario to Louisiana?

    For a flight from Ontario to Louisiana, you will be flying from Ontario. Ontario (ONT) is just 3.1 mi from the center of the city.

  • What are the cheapest airlines to fly from Ontario to Louisiana one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $118. Users have also found prices from $119 and $127 on American Airlines and Frontier, respectively.

  • What are the most popular routes from Ontario to Louisiana?

    Most travelers choose Ontario - New Orleans Louis Armstrong, Ontario - Baton Rouge Ryan or Ontario - Shreveport when deciding on the best route from Ontario to Louisiana.

  • Can I find deals for flights from Ontario to Louisiana that include hotel bookings?

    Yes. In addition to deals on Ontario to Louisiana flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ontario to Louisiana?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ontario to Louisiana.

  • Can I find deals for business class flights from Ontario to Louisiana?

    Yes. Cheapflights offers flight deals from Ontario to Louisiana by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Ontario to Louisiana?

    Currently, August is the cheapest month in which you can book a flight from Ontario to Louisiana (average of $256). Flying from Ontario to Louisiana in April is currently the most expensive (average of $343). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Ontario to Louisiana

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Top 5 airlines flying from Ontario to Louisiana

Discover the top 5 airlines that operate flights from Ontario to Louisiana. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$114Average$197FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$264Average$448FlexibilityNo cancel feeOn-time71%
DeltaCheapest$273Average$415FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$294Average$470FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$316Average$454FlexibilityNo cancel feeOn-time63%

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