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Ontario

$103+ Cheap flights from Louisiana to Ontario (ONT)

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.
MSY — ONT
Sep 1 — Sep 81
Tue 9/1
Tue 9/8
1 adult, Economy
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Cheap flight deals from Louisiana to Ontario

Cheapest flights from Louisiana to Ontario
Explore the most affordable flight options available from Louisiana to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 2, 2026.

This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:00 pm
MSY
-
ONT
1 stop16h 22m
Frontier
Mon 9/148:00 am
ONT
-
MSY
1 stop10h 04m
Frontier
Deal found 7/30$234
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/209:36 pm
MSY
-
ONT
1 stop28h 14m
Frontier
Wed 8/267:56 pm
ONT
-
MSY
1 stop22h 55m
Frontier
Deal found 7/29$244
This Super.com deal was found by Cheapflights users on 8/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/249:36 pm
MSY
-
ONT
1 stop14h 28m
Frontier
Mon 8/318:17 am
ONT
-
MSY
1 stop6h 39m
Frontier
Deal found 8/1$254
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/279:36 pm
MSY
-
ONT
1 stop14h 28m
Frontier
Thu 9/38:17 am
ONT
-
MSY
1 stop6h 39m
Frontier
Deal found 7/30$264
This Frontier 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/231:22 pm
MSY
-
ONT
1 stop8h 37m
Frontier
Sat 10/248:07 am
ONT
-
MSY
1 stop7h 01m
Frontier
Deal found 7/28$270
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:52 pm
MSY
-
ONT
1 stop27h 58m
Frontier
Mon 9/76:00 am
ONT
-
MSY
1 stop13h 07m
Frontier
Deal found 7/29$280
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 8/266:38 pm
SHV
-
ONT
1 stop6h 21m
American Airlines
Wed 9/212:33 pm
ONT
-
SHV
1 stop8h 08m
American Airlines
Deal found 7/29$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.
Fri 8/288:22 am
SHV
-
ONT
1 stop6h 28m
United Airlines
Fri 9/47:13 pm
ONT
-
SHV
2 stops13h 21m
United Airlines
Deal found 7/30$344
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.
Tue 8/251:27 pm
BTR
-
ONT
1 stop8h 26m
Delta
Sat 8/2912:00 pm
ONT
-
BTR
1 stop6h 46m
Delta
Deal found 7/30$359
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.
Thu 11/195:23 pm
LFT
-
ONT
1 stop6h 16m
American Airlines
Mon 11/2311:59 pm
ONT
-
LFT
1 stop8h 04m
American Airlines
Deal found 7/29$359
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/286:38 pm
SHV
-
ONT
1 stop6h 21m
American Airlines
Fri 9/42:27 pm
ONT
-
SHV
1 stop6h 14m
American Airlines
Deal found 7/30$359
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/56:00 am
BTR
-
ONT
1 stop5h 34m
American Airlines
Fri 9/1110:25 am
ONT
-
BTR
1 stop5h 47m
American Airlines
Deal found 7/28$360

Find flight deals from Louisiana to Ontario

Keep the following information in mind while searching for Louisiana to Ontario flight deals. Data was last updated August 2, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$234
(Expedia)

One-way from

$103
(Trip.com)

Popular in

January

Cheapest in

October

Average price

$293
Provider with most accurate pricing for New Orleans Louis Armstrong-Los Angeles Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for New Orleans Louis Armstrong-Los Angeles Los Angeles flights.
Search Deals
From Louisiana to Ontario
Search Deals
One-way flight from Louisiana to Ontario
Search Deals
Highest demand for flights based on searches. 8% potential increase in price ($32 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($10 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Louisiana to Ontario 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 August 2, 2026.
Use the filters below to find and compare flights from Louisiana to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Thu 11/5

5:50 am-9:55 am

1 stop6h 05m

Ontario

Thu 11/12

12:40 pm-9:50 pm

1 stop7h 10m

$333

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Sat 1/9

3:25 pm-10:14 pm

1 stop8h 49m

Ontario

Wed 1/20

12:00 pm-8:42 pm

1 stop6h 42m

$333

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Tue 1/5

5:30 am-11:27 am

1 stop7h 57m

Ontario

Thu 1/21

7:00 am-5:31 pm

1 stop8h 31m

$333

LafayetteOntario

LFT - ONT

LFTONT

Lafayette Regional

Fri 10/16

3:11 pm-9:54 pm

1 stop8h 43m

Ontario

Mon 10/19

11:15 pm-10:48 am

1 stop9h 33m

$359

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Thu 11/19

6:40 am-12:15 pm

2 stops7h 35m

Ontario

Mon 11/23

12:10 pm-9:50 pm

2 stops7h 40m

$376

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Fri 8/28

11:17 am-8:01 pm

2 stops10h 44m

Ontario

Fri 9/4

6:08 am-7:29 pm

2 stops11h 21m

$380

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Fri 9/4

4:18 pm-8:55 pm

1 stop6h 37m

Ontario

Sun 9/6

6:00 am-3:36 pm

1 stop7h 36m

$414

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Tue 8/25

6:00 am-9:34 am

1 stop5h 34m

Ontario

Sat 8/29

6:15 am-8:06 pm

2 stops11h 51m

$417
Quickest round-trip

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Thu 11/5

4:03 pm-9:40 pm

1 stop7h 37m

Ontario

Thu 11/12

1:29 pm-9:01 pm

1 stop5h 32m

$427

LafayetteOntario

LFT - ONT

LFTONT

Lafayette Regional

Thu 8/13

6:00 am-9:34 am

1 stop5h 34m

Ontario

Sun 8/16

12:33 pm-10:59 pm

1 stop8h 26m

$429

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Louisiana to Ontario

Have a flexible travel schedule? Discover the best time to fly to Ontario from Louisiana 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 Louisiana to Ontario

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

Currently, March is the cheapest month in which you can book a flight from Louisiana to Ontario (average of $330). Flying from Louisiana to Ontario in January is currently the most expensive (average of $564). 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.

How much does it cost to fly round-trip from Louisiana to Ontario?

Airfare is below average for this route at the moment.
Louisiana to Ontario flights typically cost between $390 and $440 in September.
The cheapest round-trip price found within the last 5 days was $234 on Frontier (Sep 10-Sep 14).

Related info for your journey

Find useful and relevant information for your journey from Louisiana to Ontario. 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 into for flights to Ontario from Louisiana?

    Most people fly into Ontario (ONT) if they book a flight to Ontario from Louisiana. Ontario is conveniently located just 3.1 mi from Ontario’s city center.

  • How long is the flight from Louisiana to Ontario?

    For as low as $333, Southwest can have you in Ontario from Louisiana in 6h 05m. Louisiana and Ontario are separated by a distance of 1620 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $95. Users have also found prices from $118 and $166 on United Airlines and American Airlines, respectively.

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

    The most popular flight routes from Louisiana to Ontario are New Orleans Louis Armstrong - Ontario, Baton Rouge Ryan - Ontario and Shreveport - Ontario.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Louisiana to Ontario 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 Louisiana to Ontario?

    Currently, March is the cheapest month in which you can book a flight from Louisiana to Ontario (average of $330). Flying from Louisiana to Ontario in January is currently the most expensive (average of $564). 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 Louisiana to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Louisiana to Ontario

Discover the top 3 airlines that operate flights from Louisiana to Ontario. 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 August 2, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$169Average$248FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$261Average$482FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$332Average$441FlexibilityNo cancel feeOn-time63%

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