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Ontario

$105+ 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 4/17. Fares are subject to change and may not be available on all flights or dates of travel.
MSY — ONT
Apr 16 — Apr 231
Thu 4/16
Thu 4/23
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 March 17, 2026.

This Frontier deal was found by Cheapflights users on 3/16. 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 4/243:39 pm
MSY
-
ONT
1 stop10h 16m
Frontier
Sat 5/27:44 pm
ONT
-
MSY
1 stop14h 38m
Frontier
Deal found 3/16$209
This Frontier deal was found by Cheapflights users on 3/12. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:58 am
MSY
-
ONT
1 stop6h 40m
Frontier
Sun 4/2612:59 am
ONT
-
MSY
1 stop11h 45m
Frontier
Deal found 3/12$210
This Booking.com deal was found by Cheapflights users on 3/15. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/2411:58 am
MSY
-
ONT
1 stop6h 40m
Frontier
Fri 5/18:26 am
ONT
-
MSY
1 stop9h 43m
Frontier
Deal found 3/15$214
This CheapOair deal was found by Cheapflights users on 3/12. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/1711:58 am
MSY
-
ONT
1 stop6h 40m
Frontier
Sat 4/1812:59 am
ONT
-
MSY
1 stop11h 45m
Frontier
Deal found 3/12$221
This Frontier deal was found by Cheapflights users on 3/15. 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 4/1711:58 am
MSY
-
ONT
1 stop6h 40m
Frontier
Sun 4/1912:59 am
ONT
-
MSY
1 stop11h 45m
Frontier
Deal found 3/15$230
This Booking.com deal was found by Cheapflights users on 3/12. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/232:23 pm
MSY
-
ONT
1 stop11h 32m
Frontier
Fri 4/248:26 am
ONT
-
MSY
1 stop9h 43m
Frontier
Deal found 3/12$244
This Gotogate deal was found by Cheapflights users on 3/16. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2711:26 am
MSY
-
ONT
1 stop7h 12m
Frontier
Wed 5/64:39 pm
ONT
-
MSY
1 stop26h 12m
Frontier
Deal found 3/16$250
This United Airlines deal was found by Cheapflights users on 3/13. 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 6/14:00 pm
AEX
-
ONT
1 stop7h 55m
United Airlines
Sun 6/145:45 am
ONT
-
AEX
1 stop7h 05m
United Airlines
Deal found 3/13$318
This American Airlines deal was found by Cheapflights users on 3/16. 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 5/76:30 pm
SHV
-
ONT
1 stop7h 16m
American Airlines
Tue 5/129:24 am
ONT
-
SHV
2 stops10h 33m
American Airlines
Deal found 3/16$334
This American Airlines deal was found by Cheapflights users on 3/14. 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 4/186:32 pm
BTR
-
ONT
1 stop6h 04m
American Airlines
Sat 4/252:08 pm
ONT
-
BTR
1 stop6h 38m
American Airlines
Deal found 3/14$348
This American Airlines deal was found by Cheapflights users on 3/13. 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 4/112:33 pm
BTR
-
ONT
1 stop6h 04m
American Airlines
Wed 4/1511:59 pm
ONT
-
BTR
1 stop8h 03m
American Airlines
Deal found 3/13$349
This American Airlines deal was found by Cheapflights users on 3/15. 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 4/176:12 pm
LFT
-
ONT
1 stop7h 34m
American Airlines
Sun 4/197:35 pm
ONT
-
LFT
2 stops12h 37m
American Airlines
Deal found 3/15$354

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 March 17, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$209
(Frontier)

One-way from

$105
(Frontier)

Popular in

January

Cheapest in

October

Average price

$363
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. 22% potential increase in price ($86 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($15 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 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 March 17, 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

AlexandriaOntario

AEX - ONT

AEXONT

Alexandria

Mon 6/1

4:00 pm-9:55 pm

1 stop7h 55m

Ontario

Sun 6/14

5:45 am-2:50 pm

1 stop7h 05m

$318

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Tue 4/28

6:30 pm-10:25 pm

1 stop5h 55m

Ontario

Tue 5/5

4:30 pm-11:50 pm

1 stop5h 20m

$337
Quickest round-trip

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Thu 5/28

7:35 pm-11:05 pm

1 stop5h 30m

Ontario

Tue 6/2

12:55 pm-8:05 pm

1 stop5h 10m

$346

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Wed 4/29

4:40 pm-10:10 pm

2 stops7h 30m

Ontario

Wed 5/6

10:30 am-8:05 pm

2 stops7h 35m

$347

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Thu 5/28

2:21 pm-10:37 pm

2 stops10h 16m

Ontario

Tue 6/2

5:45 am-1:14 pm

1 stop5h 29m

$351

LafayetteOntario

LFT - ONT

LFTONT

Lafayette Regional

Fri 4/17

6:12 pm-11:46 pm

1 stop7h 34m

Ontario

Sun 4/19

7:35 pm-10:12 am

2 stops12h 37m

$354

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Tue 4/7

6:30 pm-10:36 pm

1 stop6h 06m

Ontario

Fri 4/17

7:35 pm-10:03 am

2 stops12h 28m

$354

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 5/8

2:00 pm-10:59 pm

2 stops10h 59m

Ontario

Sun 5/10

6:00 am-3:31 pm

1 stop7h 31m

$354

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Sat 5/9

5:20 am-10:57 am

1 stop7h 37m

Ontario

Wed 5/20

7:05 am-4:04 pm

1 stop6h 59m

$357

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Fri 3/27

6:26 pm-11:59 pm

1 stop7h 33m

Ontario

Tue 3/31

11:58 pm-9:43 am

1 stop7h 45m

$379

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/12

Showing 1-10 of 53 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, April is the cheapest month in which you can book a flight from Louisiana to Ontario (average of $83). Flying from Louisiana to Ontario in January is currently the most expensive (average of $157). 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.

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 $337, United Airlines can have you in Ontario from Louisiana in 5h 55m. 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 $124 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, Lafayette Regional - 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, April is the cheapest month in which you can book a flight from Louisiana to Ontario (average of $83). Flying from Louisiana to Ontario in January is currently the most expensive (average of $157). 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 March 17, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$184Average$446FlexibilityNo cancel feeOn-time71%
FrontierCheapest$191Average$271FlexibilityNo cancel feeOn-time62%
SouthwestCheapest$273Average$417FlexibilityNo cancel feeOn-time63%

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