HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$118+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
MSY — ONT
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Louisiana to Ontario with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$248
(Booking.com)

One-way from

$118
(Cheapflightsfares)

Popular in

December

Cheapest in

February

Average price

$337
Provider with most accurate pricing for New Orleans Louis Armstrong-Los Angeles flight deals.
Search Deals
Provider most trusted by Cheapflights users for New Orleans Louis Armstrong-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. 17% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find 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 28, 2025.

This Booking.com deal was found by Cheapflights users on 3/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/247:46 pmMSY - ONT
1 stop17h 35mFrontier
Sat 4/2612:59 amONT - MSY
1 stop15h 47mFrontier
Deal found 3/27$248
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/185:23 pmSHV - ONT
1 stop7h 13mDelta
Sun 4/207:00 amONT - SHV
1 stop7h 43mDelta
Deal found 3/27$264
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/135:39 pmMSY - ONT
1 stop6h 21mUnited Airlines
Tue 5/206:08 amONT - MSY
1 stop5h 41mUnited Airlines
Deal found 3/27$273
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/183:20 pmBTR - ONT
1 stop9h 09mDelta
Mon 10/2010:59 pmONT - BTR
1 stop8h 31mDelta
Deal found 3/27$289
This Alaska Airlines deal was found by Cheapflights users on 3/27. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/17:00 amMSY - ONT
1 stop10h 12mAlaska Airlines
Tue 11/46:55 pmONT - MSY
1 stop8h 37mAlaska Airlines
Deal found 3/27$312
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/245:40 pmMSY - ONT
1 stop6h 56mDelta
Sun 4/2710:15 pmONT - MSY
1 stop8h 53mDelta
Deal found 3/27$315
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/119:00 amSHV - ONT
1 stop5h 38mUnited Airlines
Tue 4/155:00 amONT - SHV
2 stops12h 23mUnited Airlines
Deal found 3/27$320
This Hawaiian Airlines deal was found by Cheapflights users on 3/27. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/157:00 amMSY - ONT
1 stop10h 12mHawaiian Airlines
Tue 10/216:55 pmONT - MSY
1 stop8h 37mHawaiian Airlines
Deal found 3/27$332
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Sun 4/275:10 amMSY - ONT
1 stop6h 44mAmerican Airlines
Sat 5/311:59 pmONT - MSY
1 stop6h 36mAmerican Airlines
Deal found 3/27$336
This United Airlines deal was found by Cheapflights users on 3/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/114:07 pmLFT - ONT
1 stop7h 51mUnited Airlines
Tue 4/156:10 amONT - LFT
1 stop7h 21mUnited Airlines
Deal found 3/27$339
This Delta deal was found by Cheapflights users on 3/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/111:43 pmLFT - ONT
2 stops12h 09mDelta
Tue 4/157:00 amONT - LFT
1 stop7h 58mDelta
Deal found 3/27$344
This American Airlines deal was found by Cheapflights users on 3/27. 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.
Tue 6/178:25 pmSHV - ONT
1 stop5h 34mAmerican Airlines
Tue 6/2411:59 pmONT - SHV
1 stop7h 49mAmerican Airlines
Deal found 3/27$349

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 28, 2025.
Use the filters below to find and compare flights from Louisiana to Ontario that are best for you.

Fly from

Louisiana

Fly to

Ontario

Route

Depart

Return

Price

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Thu 4/24

7:46 pm-11:21 am

1 stop17h 35m

Ontario

Sat 4/26

12:59 am-6:46 pm

1 stop15h 47m

$248

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Fri 4/18

5:23 pm-10:36 pm

1 stop7h 13m

Ontario

Sun 4/20

7:00 am-4:43 pm

1 stop7h 43m

$264

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Tue 5/13

5:39 pm-10:00 pm

1 stop6h 21m

Ontario

Tue 5/20

6:08 am-1:49 pm

1 stop5h 41m

$273

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Thu 4/24

5:40 pm-10:36 pm

1 stop6h 56m

Ontario

Sun 4/27

10:15 pm-9:08 am

1 stop8h 53m

$315

ShreveportOntario

SHV - ONT

SHVONT

Shreveport

Fri 4/11

9:00 am-12:38 pm

1 stop5h 38m

Ontario

Tue 4/15

5:00 am-7:23 pm

2 stops12h 23m

$320

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Sun 4/27

5:10 am-9:54 am

1 stop6h 44m

Ontario

Sat 5/3

11:59 pm-8:35 am

1 stop6h 36m

$336

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 4/10

6:00 am-11:29 am

1 stop7h 29m

Ontario

Sun 4/13

12:42 pm-11:02 pm

1 stop8h 20m

$339

LafayetteOntario

LFT - ONT

LFTONT

Lafayette Regional

Fri 4/11

4:07 pm-9:58 pm

1 stop7h 51m

Ontario

Tue 4/15

6:10 am-3:31 pm

1 stop7h 21m

$339

LafayetteOntario

LFT - ONT

LFTONT

Lafayette Regional

Fri 4/11

1:43 pm-11:52 pm

2 stops12h 09m

Ontario

Tue 4/15

7:00 am-4:58 pm

1 stop7h 58m

$344

New OrleansOntario

MSY - ONT

MSYONT

New Orleans Louis Armstrong

Wed 5/7

5:32 pm-11:58 pm

1 stop8h 26m

Ontario

Sun 5/11

7:24 pm-5:55 am

1 stop8h 31m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/27

Showing 1-10 of 30 results
1
2
3

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, August is the cheapest month in which you can book a flight from Louisiana to Ontario (average of $246). Flying from Louisiana to Ontario in March is currently the most expensive (average of $326). 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 LA to ONT?

Find hourly flight availability from Louisiana to Ontario. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

When flying from Louisiana to Ontario, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Ontario by month

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

In terms of precipitation, rainfall in Ontario ranges from 0.1 - 3.4 inches per month. February is typically the wettest month, when rainfall can reach 3.4 in. June is typically the driest time to visit Ontario when rainfall is around 0.1 in.

Temperature in Ontario by month

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

If weather is an important factor for your trip to Ontario, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 78.8 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. 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 Ontario. Reviews last updated March 28, 2025.
Read reviews from past customers who have flown Southwest, Alaska Airlines and Delta from Louisiana to Ontario. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Southwest
8.1
Very good
4,273 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Alaska Airlines
8.0
Very good
9,798 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Delta
8.0
Very good
7,896 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
Hawaiian Airlines
7.9
Good
2,336 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.
United Airlines
7.4
Good
8,603 reviews
Southwest
8.1
Very good
4,273 reviews

Crew

8.6

Boarding

8.2

Overall

8.1

Food

7.1

Comfort

8.1

Entertainment

7.6

Reviews

1 / 20
10.0
Excellent

Merlyn,Feb 2025

LAX - SMF

New Terminal is neat, lost of stores and places to catch a bite.

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.

  • 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 $118. Users have also found prices from $136 and $148 on Alaska Airlines and Hawaiian 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, Shreveport - Ontario and Baton Rouge Ryan - 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, August is the cheapest month in which you can book a flight from Louisiana to Ontario (average of $246). Flying from Louisiana to Ontario in March is currently the most expensive (average of $326). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Louisiana to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Las Vegas flights
Newark to Las Vegas flights
John F Kennedy Intl to Los Angeles flights
Newark to Los Angeles flights
LaGuardia to Las Vegas flights
O'Hare Intl to Las Vegas flights
LaGuardia to Los Angeles flights
Dallas/Fort Worth to Las Vegas flights
Seattle to Las Vegas flights
Newark to San Francisco flights
Denver to Las Vegas flights
Los Angeles to Las Vegas flights
Seattle to Los Angeles flights
Burbank to Las Vegas flights
Boston to Las Vegas flights
Dulles Intl to Las Vegas flights
San Francisco to Los Angeles flights
Boston to Los Angeles flights
Atlanta to Las Vegas flights
San Francisco to Las Vegas flights
John F Kennedy Intl to San Francisco flights
Hobby to Las Vegas flights
O'Hare Intl to Los Angeles flights
Dallas/Fort Worth to Los Angeles flights
San Jose to Los Angeles flights
Minneapolis to Las Vegas flights
John F Kennedy Intl to San Diego flights
Los Angeles to San Francisco flights
Reagan-National to Las Vegas flights
Seattle to San Diego flights
Reagan-National to Los Angeles flights
Los Angeles to San Jose flights
Newark to Burbank flights
Santa Ana to Las Vegas flights
Dulles Intl to Los Angeles flights
Newark to San Diego flights
Hobby to Los Angeles flights
George Bush Intcntl to Las Vegas flights
Los Angeles to Oakland flights
San Francisco to Ontario flights
LaGuardia to San Francisco flights
Dulles Intl to San Francisco flights
Baltimore to Las Vegas flights
Seattle to Santa Ana flights
Oakland to Las Vegas flights
Detroit to Las Vegas flights
Portland to Los Angeles flights
Seattle to Burbank flights
Oakland to Los Angeles flights
Baltimore to Los Angeles flights

Top 6 airlines flying from Louisiana to Ontario

Discover the top 6 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 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$120Average$194FlexibilityNo cancel feeOn-time65%
FrontierCheapest$160Average$259FlexibilityNo cancel feeOn-time62%
American AirlinesCheapest$214Average$441FlexibilityNo cancel feeOn-time71%
DeltaCheapest$282Average$359FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$294Average$416FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$329Average$399FlexibilityNo cancel feeOn-time69%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.