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$100+ 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 7/31. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — MSY
Jul 5 — Jul 121
Sat 7/5
Sat 7/12
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 30, 2025.

Round-trip from

$254
(American Airlines)

One-way from

$100
(Trip.com)

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 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 30, 2025.

This American Airlines deal was found by Cheapflights users on 6/28. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/296:47 amONT - MSY
1 stop8h 23mAmerican Airlines
Tue 11/44:18 pmMSY - ONT
1 stop9h 27mAmerican Airlines
Deal found 6/28$254
This CheapOair deal was found by Cheapflights users on 6/29. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/168:59 pmONT - MSY
2 stops40h 51mFrontier
Fri 9/264:51 pmMSY - ONT
2 stops29h 03mFrontier
Deal found 6/29$269
This American Airlines deal was found by Cheapflights users on 6/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/2412:46 pmONT - SHV
1 stop6h 18mAmerican Airlines
Mon 7/288:27 pmSHV - ONT
1 stop5h 27mAmerican Airlines
Deal found 6/30$269
This Hawaiian Airlines deal was found by Cheapflights users on 6/28. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2911:39 amONT - MSY
1 stop10h 50mHawaiian Airlines
Tue 11/47:00 amMSY - ONT
1 stop10h 14mHawaiian Airlines
Deal found 6/28$282
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/167:05 amONT - MSY
1 stop8h 48mDelta
Wed 8/201:05 pmMSY - ONT
1 stop8h 06mDelta
Deal found 6/28$283
This United Airlines deal was found by Cheapflights users on 6/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/291:34 pmONT - MSY
1 stop5h 56mUnited Airlines
Tue 8/53:25 pmMSY - ONT
2 stops9h 27mUnited Airlines
Deal found 6/29$288
This American Airlines deal was found by Cheapflights users on 6/29. 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.
Thu 7/3112:59 amONT - LFT
1 stop7h 12mAmerican Airlines
Mon 8/115:48 amLFT - ONT
1 stop6h 10mAmerican Airlines
Deal found 6/29$289
This American Airlines deal was found by Cheapflights users on 6/27. 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 8/2911:59 pmONT - BTR
1 stop8h 16mAmerican Airlines
Sat 9/64:31 pmBTR - ONT
1 stop8h 02mAmerican Airlines
Deal found 6/27$289
This Trip.com deal was found by Cheapflights users on 6/29. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:21 pmONT - MSY
1 stop21h 43mMultiple Airlines
Sat 7/1210:24 pmMSY - ONT
2 stops12h 45mMultiple Airlines
Deal found 6/29$297
This Alaska Airlines deal was found by Cheapflights users on 6/28. 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 8/166:51 pmONT - MSY
1 stop8h 59mAlaska Airlines
Thu 8/217:21 amMSY - ONT
1 stop8h 48mAlaska Airlines
Deal found 6/28$299
This Southwest deal was found by Cheapflights users on 6/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/92:15 pmONT - MSY
1 stop7h 40mSouthwest
Mon 10/137:50 pmMSY - ONT
1 stop5h 50mSouthwest
Deal found 6/30$317
This Delta deal was found by Cheapflights users on 6/30. 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 7/1011:40 amONT - SHV
1 stop9h 38mDelta
Mon 7/145:10 pmSHV - ONT
1 stop7h 17mDelta
Deal found 6/30$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 June 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

Mon 7/28

12:59 am-10:29 am

1 stop7h 30m

New Orleans Louis Armstrong

Tue 8/5

2:39 pm-9:38 pm

1 stop8h 59m

$263

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Tue 9/16

8:59 pm-3:50 pm

2 stops40h 51m

New Orleans Louis Armstrong

Fri 9/26

4:51 pm-7:54 pm

2 stops29h 03m

$269

OntarioShreveport

ONT - SHV

ONTSHV

Ontario

Thu 7/24

12:46 pm-9:04 pm

1 stop6h 18m

Shreveport

Mon 7/28

8:27 pm-11:54 pm

1 stop5h 27m

$269

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Sat 8/16

7:05 am-5:53 pm

1 stop8h 48m

New Orleans Louis Armstrong

Wed 8/20

1:05 pm-7:11 pm

1 stop8h 06m

$283

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Tue 7/29

1:34 pm-9:30 pm

1 stop5h 56m

New Orleans Louis Armstrong

Tue 8/5

3:25 pm-10:52 pm

2 stops9h 27m

$288

OntarioLafayette

ONT - LFT

ONTLFT

Ontario

Thu 7/31

12:59 am-10:11 am

1 stop7h 12m

Lafayette Regional

Mon 8/11

5:48 am-9:58 am

1 stop6h 10m

$289

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Fri 8/29

11:59 pm-10:15 am

1 stop8h 16m

Baton Rouge Ryan

Sat 9/6

4:31 pm-10:33 pm

1 stop8h 02m

$289

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Wed 7/9

5:21 pm-5:04 pm

1 stop21h 43m

New Orleans Louis Armstrong

Sat 7/12

10:24 pm-9:09 am

2 stops12h 45m

$297

OntarioNew Orleans

ONT - MSY

ONTMSY

Ontario

Sat 8/16

6:51 pm-5:50 am

1 stop8h 59m

New Orleans Louis Armstrong

Thu 8/21

7:21 am-2:09 pm

1 stop8h 48m

$299

OntarioShreveport

ONT - SHV

ONTSHV

Ontario

Thu 7/10

11:40 am-11:18 pm

1 stop9h 38m

Shreveport

Mon 7/14

5:10 pm-10:27 pm

1 stop7h 17m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/27

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 June 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 June 30, 2025.
See what other customers who have flown with Alaska Airlines, Southwest, and Delta 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

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

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

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

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
4,278 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

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
7,969 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

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
7.8
Good
2,533 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

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
8,852 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Entertainment

7.1

Overall

8.0

Comfort

7.8

Food

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 Frontier. According to our data, you can fly for as low as $115. Users have also found prices from $136 and $141 on Alaska Airlines and Hawaiian Airlines, 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

See prices for flight routes from nearby airports that may be better suited for you.
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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 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$114Average$195FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$268Average$433FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$283Average$460FlexibilityNo cancel feeOn-time69%
DeltaCheapest$298Average$416FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$320Average$459FlexibilityNo cancel feeOn-time63%

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