HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$309+ Cheap flights from Baton Rouge to Ontario (BTR - ONT)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/24. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baton Rouge 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 Baton Rouge to Ontario

Cheapest flights from Baton Rouge to Ontario
Explore the most affordable flight options available from Baton Rouge to Ontario. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 26, 2026.

This Delta deal was found by Cheapflights users on 1/25. 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 2/246:18 am
BTR
-
ONT
1 stop7h 44m
Delta
Wed 3/410:20 pm
ONT
-
BTR
1 stop9h 26m
Delta
Deal found 1/25$309
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Thu 2/266:07 pm
BTR
-
ONT
1 stop5h 52m
United Airlines
Mon 3/29:06 pm
ONT
-
BTR
2 stops12h 21m
United Airlines
Deal found 1/25$314
This Delta deal was found by Cheapflights users on 1/25. 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 2/274:02 pm
BTR
-
ONT
1 stop7h 03m
Delta
Sun 3/110:20 pm
ONT
-
BTR
1 stop9h 26m
Delta
Deal found 1/25$334
This Delta deal was found by Cheapflights users on 1/25. 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 2/246:18 am
BTR
-
ONT
1 stop7h 44m
Delta
Thu 3/51:15 pm
ONT
-
BTR
1 stop6h 46m
Delta
Deal found 1/25$353
This Delta deal was found by Cheapflights users on 1/25. 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 2/274:02 pm
BTR
-
ONT
1 stop7h 03m
Delta
Sat 2/2810:20 pm
ONT
-
BTR
1 stop9h 26m
Delta
Deal found 1/25$359
This Delta deal was found by Cheapflights users on 1/25. 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 2/274:02 pm
BTR
-
ONT
1 stop7h 03m
Delta
Thu 3/51:15 pm
ONT
-
BTR
1 stop6h 46m
Delta
Deal found 1/25$378
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Wed 2/256:07 pm
BTR
-
ONT
1 stop5h 52m
United Airlines
Sat 2/286:00 am
ONT
-
BTR
1 stop7h 33m
United Airlines
Deal found 1/25$399
This American Airlines deal was found by Cheapflights users on 1/25. 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 2/285:00 am
BTR
-
ONT
2 stops8h 36m
American Airlines
Tue 3/32:39 pm
ONT
-
BTR
1 stop6h 00m
American Airlines
Deal found 1/25$404
This United Airlines deal was found by Cheapflights users on 1/24. 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 2/61:55 pm
BTR
-
ONT
2 stops10h 58m
United Airlines
Sun 2/86:00 am
ONT
-
BTR
1 stop7h 58m
United Airlines
Deal found 1/24$409
This Alaska Airlines deal was found by Cheapflights users on 1/25. 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.
Tue 2/245:00 am
BTR
-
ONT
2 stops12h 08m
Alaska Airlines
Wed 3/46:14 am
ONT
-
BTR
2 stops14h 25m
Alaska Airlines
Deal found 1/25$410
This American Airlines deal was found by Cheapflights users on 1/25. 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.
Mon 2/235:57 pm
BTR
-
ONT
1 stop6h 52m
American Airlines
Thu 3/52:39 pm
ONT
-
BTR
1 stop6h 00m
American Airlines
Deal found 1/25$424
This United Airlines deal was found by Cheapflights users on 1/25. 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 2/236:07 pm
BTR
-
ONT
1 stop5h 53m
United Airlines
Wed 3/45:00 am
ONT
-
BTR
2 stops10h 32m
United Airlines
Deal found 1/25$429

Find flight deals from Baton Rouge to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Baton Rouge (BTR) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$309
(Delta)

Popular in

February

Cheapest in

March

Average price

$468
Provider with most accurate pricing for Baton Rouge Ryan-Ontario flight deals.
Search Deals
Provider most trusted by Cheapflights users for Baton Rouge Ryan-Ontario flights.
Search Deals
From Baton Rouge Ryan to Ontario
Search Deals
Highest demand for flights based on searches. 9% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baton Rouge 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 January 26, 2026.
Use the filters below to find and compare flights from Baton Rouge to Ontario that are best for you.

Fly from

Baton Rouge

Fly to

Ontario

Route

Depart

Return

Price

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Tue 2/24

6:18 am-12:02 pm

1 stop7h 44m

Ontario

Mon 3/2

10:20 pm-9:46 am

1 stop9h 26m

$309

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 2/26

6:07 pm-9:59 pm

1 stop5h 52m

Ontario

Mon 3/2

9:06 pm-11:27 am

2 stops12h 21m

$314

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 3/5

8:11 pm-11:59 pm

1 stop5h 48m

Ontario

Fri 3/13

11:58 pm-9:54 am

1 stop7h 56m

$334

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 2/27

4:02 pm-9:05 pm

1 stop7h 03m

Ontario

Wed 3/4

1:15 pm-10:01 pm

1 stop6h 46m

$334

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 2/27

4:02 pm-9:05 pm

1 stop7h 03m

Ontario

Sat 2/28

10:20 pm-9:46 am

1 stop9h 26m

$359

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 2/25

6:07 pm-9:59 pm

1 stop5h 52m

Ontario

Tue 3/3

8:00 am-5:32 pm

1 stop7h 32m

$399

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sat 2/28

5:00 am-10:06 am

1 stop7h 06m

Ontario

Wed 3/4

11:58 pm-9:54 am

1 stop7h 56m

$399

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 2/26

6:07 pm-9:59 pm

1 stop5h 52m

Ontario

Tue 3/3

8:00 am-3:33 pm

1 stop5h 33m

$399

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Mon 2/23

6:07 pm-10:00 pm

1 stop5h 53m

Ontario

Wed 3/4

8:00 am-3:33 pm

1 stop5h 33m

$399

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 2/25

6:07 pm-9:59 pm

1 stop5h 52m

Ontario

Mon 3/2

6:00 am-3:33 pm

1 stop7h 33m

$399

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 13 results
1
2

Compare providers for flights from Baton Rouge to Ontario

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Baton Rouge to Ontario in January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Baton Rouge-Ontario flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Baton Rouge-Ontario flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Baton Rouge-Ontario flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Baton Rouge-Ontario flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Baton Rouge-Ontario flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Baton Rouge to Ontario

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

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

Currently, April is the cheapest month in which you can book a flight from Baton Rouge to Ontario (average of $83). Flying from Baton Rouge to Ontario in January is currently the most expensive (average of $163). 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.

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 January 26, 2026.
Read reviews from past customers who have flown American Airlines from Baton Rouge to Ontario. 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.
American Airlines
7.2
Good
11,189 reviews

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Food

6.4

Reviews

1 / 20
10.0
Excellent

Michael,Oct 2024

MSY - DCA

On time flight. Cabin not cleaned prior to flight. Trash in seat pocket.
American Airlines
7.2
Good
11,189 reviews
American Airlines
7.2
Good
11,189 reviews

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.5

Comfort

7.2

Food

6.4

Reviews

1 / 20
10.0
Excellent

Michael,Oct 2024

MSY - DCA

On time flight. Cabin not cleaned prior to flight. Trash in seat pocket.

Related info for your journey

Find useful and relevant information for your journey from Baton Rouge to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Baton Rouge to Ontario?

    Airlines like Delta, United Airlines, and American Airlines fly from Baton Rouge to Ontario in about 5h 48m. The time it takes to get you to your destination can typically vary by up to 1h 56m. The distance between Baton Rouge and Ontario is about 1558 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What is the cheapest airline to fly from Baton Rouge to Ontario round-trip?

    Flying on American Airlines is currently your cheapest option to Ontario, with prices starting at $288. American Airlines is 41% cheaper than the average price of flights available within the next 90 days to this destination.

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

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

  • How can I find direct flights from Baton Rouge to Ontario?

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

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

    Yes. Cheapflights offers flight deals from Baton Rouge 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 Baton Rouge to Ontario?

    Currently, April is the cheapest month in which you can book a flight from Baton Rouge to Ontario (average of $83). Flying from Baton Rouge to Ontario in January is currently the most expensive (average of $163). 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 Baton Rouge to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
New Orleans to Las Vegas flights
New Orleans to Los Angeles flights
New Orleans to San Francisco flights
New Orleans to San Diego flights
New Orleans to Ontario flights
Lafayette to Las Vegas flights
Baton Rouge to Las Vegas flights
Baton Rouge to Los Angeles flights
Shreveport to Las Vegas flights
Lake Charles to Las Vegas flights
New Orleans to Oakland flights
Shreveport to San Francisco flights
New Orleans to Palm Springs flights
New Orleans to San Jose flights
Lafayette to Santa Ana flights
New Orleans to Santa Ana flights
New Orleans to Sacramento flights
New Orleans to Reno flights
Shreveport to San Diego flights
New Orleans to Burbank flights
New Orleans to Fresno flights
Lafayette to Los Angeles flights
Shreveport to Los Angeles flights
Baton Rouge to Santa Ana flights
Shreveport to Ontario flights
Monroe to Las Vegas flights
Baton Rouge to San Francisco flights
Lafayette to San Diego flights
New Orleans to Santa Barbara flights
Alexandria to San Francisco flights
New Orleans to Long Beach flights
Baton Rouge to San Jose flights
Lafayette to San Francisco flights
Lafayette to Palm Springs flights
New Orleans to Medford flights
Baton Rouge to San Diego flights
New Orleans to Monterey flights
Lake Charles to San Francisco flights
Lafayette to Ontario flights
Monroe to San Francisco flights
Lake Charles to Los Angeles flights
Baton Rouge to Sacramento flights
Alexandria to Las Vegas flights
Shreveport to San Jose flights
Baton Rouge to Fresno flights
New Orleans to San Luis Obispo flights
Lafayette to Sacramento flights
Baton Rouge to Palm Springs flights
Lafayette to San Jose flights

Top airline flying from Baton Rouge to Ontario

Discover the top airline that operate flights from Baton Rouge 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$483FlexibilityNo cancel feeOn-time71%

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.