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$136+ 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 8/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSY
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$269
(Delta)

One-way from

$136
(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. 8% potential increase in price ($32 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 June 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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 10/110:59 pmONT - SHV
1 stop9h 09mDelta
Wed 10/85:30 pmSHV - ONT
1 stop7h 11mDelta
Deal found 6/10$269
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 7/16:00 amONT - MSY
1 stop5h 13mUnited Airlines
Wed 7/22:36 pmMSY - ONT
1 stop8h 18mUnited Airlines
Deal found 6/11$273
This Delta deal was found by Cheapflights users on 6/10. 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.
Sun 8/316:05 amONT - MSY
1 stop6h 02mDelta
Sat 9/65:25 amMSY - ONT
1 stop7h 10mDelta
Deal found 6/10$280
This Hawaiian Airlines deal was found by Cheapflights users on 6/12. 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 8/56:58 pmONT - MSY
1 stop8h 52mHawaiian Airlines
Tue 8/194:53 pmMSY - ONT
1 stop9h 20mHawaiian Airlines
Deal found 6/12$282
This American Airlines deal was found by Cheapflights users on 6/12. 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 8/2012:46 pmONT - MSY
1 stop5h 28mAmerican Airlines
Sat 8/236:35 pmMSY - ONT
1 stop6h 13mAmerican Airlines
Deal found 6/12$285
This Southwest deal was found by Cheapflights users on 6/12. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/55:25 amONT - MSY
1 stop5h 20mSouthwest
Tue 8/1910:45 amMSY - ONT
2 stops8h 00mSouthwest
Deal found 6/12$288
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 7/1711:59 pmONT - LFT
1 stop8h 12mAmerican Airlines
Mon 7/217:31 pmLFT - ONT
1 stop6h 23mAmerican Airlines
Deal found 6/11$289
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Mon 8/46:58 pmONT - MSY
1 stop8h 52mAlaska Airlines
Sat 8/94:53 pmMSY - ONT
1 stop9h 20mAlaska Airlines
Deal found 6/10$289
This Delta deal was found by Cheapflights users on 6/11. 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.
Tue 9/1610:59 pmONT - BTR
1 stop8h 37mDelta
Tue 9/231:40 pmBTR - ONT
1 stop8h 02mDelta
Deal found 6/11$289
This Delta deal was found by Cheapflights users on 6/10. 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.
Tue 7/2911:40 amONT - LFT
1 stop8h 03mDelta
Mon 8/43:34 pmLFT - ONT
2 stops10h 08mDelta
Deal found 6/10$294
This American Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 6/2712:59 amONT - SHV
1 stop6h 46mAmerican Airlines
Mon 6/306:23 pmSHV - ONT
1 stop7h 36mAmerican Airlines
Deal found 6/10$319
This CheapOair deal was found by Cheapflights users on 6/11. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 7/125:21 pmONT - MSY
1 stop21h 43mFrontier
Thu 7/176:01 pmMSY - ONT
1 stop17h 08mFrontier
Deal found 6/11$350

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 June 12, 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

OntarioShreveport

ONT - SHV

ONTSHV

Ontario

Wed 10/1

10:59 pm-10:08 am

1 stop9h 09m

Shreveport

Wed 10/8

5:30 pm-10:41 pm

1 stop7h 11m

$269

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Tue 7/1

6:00 am-1:13 pm

1 stop5h 13m

New Orleans Louis Armstrong

Wed 7/2

2:36 pm-8:54 pm

1 stop8h 18m

$273

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Sun 8/31

6:05 am-2:07 pm

1 stop6h 02m

New Orleans Louis Armstrong

Sat 9/6

5:25 am-10:35 am

1 stop7h 10m

$280

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Tue 8/5

6:58 pm-5:50 am

1 stop8h 52m

New Orleans Louis Armstrong

Tue 8/19

4:53 pm-12:13 am

1 stop9h 20m

$282

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Wed 8/20

12:46 pm-8:14 pm

1 stop5h 28m

New Orleans Louis Armstrong

Sat 8/23

6:35 pm-10:48 pm

1 stop6h 13m

$285

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Tue 8/5

5:25 am-12:45 pm

1 stop5h 20m

New Orleans Louis Armstrong

Tue 8/19

10:45 am-4:45 pm

2 stops8h 00m

$288

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Mon 8/4

6:58 pm-5:50 am

1 stop8h 52m

New Orleans Louis Armstrong

Sat 8/9

4:53 pm-12:13 am

1 stop9h 20m

$289

OntarioLafayette

ONT - LFT

ONTLFT

Ontario

Thu 7/17

11:59 pm-10:11 am

1 stop8h 12m

Lafayette Regional

Mon 7/21

7:31 pm-11:54 pm

1 stop6h 23m

$289

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 9/16

10:59 pm-9:36 am

1 stop8h 37m

Baton Rouge Ryan

Tue 9/23

1:40 pm-7:42 pm

1 stop8h 02m

$289

OntarioLafayette

ONT - LFT

ONTLFT

Ontario

Tue 7/29

11:40 am-9:43 pm

1 stop8h 03m

Lafayette Regional

Mon 8/4

3:34 pm-11:42 pm

2 stops10h 08m

$294

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

Showing 1-10 of 40 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 June 12, 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.

Rainfall in Louisiana by month

Plan your trip to Louisiana by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Louisiana ranges from 3.3 - 6.4 inches per month. June is typically the wettest month, when rainfall can reach 6.4 in. October is typically the driest time to visit Louisiana when rainfall is around 3.3 in.

Temperature in Louisiana by month

Plan your trip to Louisiana by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Louisiana, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 82.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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 June 12, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest and Delta from Ontario to Louisiana to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.1

Crew

8.5

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 $136. Users have also found prices from $139 and $142 on Delta and Southwest, respectively.

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

    Most travelers choose Ontario - New Orleans Louis Armstrong, Ontario - Shreveport or Ontario - Baton Rouge Ryan 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$114Average$222FlexibilityNo cancel feeOn-time65%
DeltaCheapest$236Average$386FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$264Average$430FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$283Average$460FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$324Average$463FlexibilityNo cancel feeOn-time63%

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