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$279+ Cheap flights from Baton Rouge to Ontario (BTR - 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 11/2. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap 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 September 17, 2025.

Round-trip from

$289
(Delta)

One-way from

$279
(Delta)

Popular in

December

Cheapest in

March

Average price

$435
From Baton Rouge Ryan to Ontario
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One-way flight from Baton Rouge Ryan to Ontario
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Highest demand for flights based on searches. 10% potential increase in price ($49 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 September 17, 2025.

This American Airlines deal was found by Cheapflights users on 9/14. 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.
Wed 11/55:30 amBTR - ONT
1 stop6h 27mAmerican Airlines
Tue 11/1110:47 amONT - BTR
1 stop5h 03mAmerican Airlines
Deal found 9/14$289
This United Airlines deal was found by Cheapflights users on 9/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/56:09 pmBTR - ONT
1 stop5h 40mUnited Airlines
Tue 11/115:05 amONT - BTR
2 stops10h 23mUnited Airlines
Deal found 9/14$294
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/53:40 pmBTR - ONT
1 stop8h 42mDelta
Tue 11/114:49 pmONT - BTR
2 stops15h 01mDelta
Deal found 9/16$319
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/301:06 pmBTR - ONT
1 stop8h 13mDelta
Mon 11/310:00 pmONT - BTR
1 stop9h 37mDelta
Deal found 9/15$343
This United Airlines deal was found by Cheapflights users on 9/17. 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 10/24:05 pmBTR - ONT
1 stop7h 19mUnited Airlines
Mon 10/66:00 amONT - BTR
1 stop5h 10mUnited Airlines
Deal found 9/17$363
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/256:46 pmBTR - ONT
1 stop5h 56mAmerican Airlines
Tue 10/2812:43 pmONT - BTR
1 stop5h 32mAmerican Airlines
Deal found 9/14$379
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/152:21 pmBTR - ONT
1 stop7h 14mDelta
Wed 12/2411:45 amONT - BTR
1 stop6h 16mDelta
Deal found 9/16$393
This Delta deal was found by Cheapflights users on 9/16. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/251:32 pmBTR - ONT
1 stop7h 43mDelta
Mon 9/2910:00 pmONT - BTR
1 stop9h 07mDelta
Deal found 9/16$419

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 September 17, 2025.
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 1/20

6:00 am-11:38 am

1 stop7h 38m

Ontario

Wed 1/28

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Tue 1/20

1:40 pm-9:14 pm

1 stop9h 34m

Ontario

Sat 1/24

1:00 pm-10:04 pm

1 stop7h 04m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 10/24

3:40 pm-10:22 pm

1 stop8h 42m

Ontario

Mon 10/27

10:00 pm-9:37 am

1 stop9h 37m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 1/21

1:40 pm-9:14 pm

1 stop9h 34m

Ontario

Wed 1/28

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 1/23

1:40 pm-9:14 pm

1 stop9h 34m

Ontario

Tue 1/27

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 1/21

6:00 am-11:38 am

1 stop7h 38m

Ontario

Sat 1/24

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 1/21

6:00 am-11:38 am

1 stop7h 38m

Ontario

Tue 1/27

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Tue 1/20

6:00 am-11:38 am

1 stop7h 38m

Ontario

Tue 1/27

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sat 1/24

1:40 pm-9:14 pm

1 stop9h 34m

Ontario

Tue 1/27

10:30 pm-9:44 am

1 stop9h 14m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 1/23

1:40 pm-9:14 pm

1 stop9h 34m

Ontario

Thu 1/29

10:30 pm-9:44 am

1 stop9h 14m

$289

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 18 results
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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, August is the cheapest month in which you can book a flight from Baton Rouge to Ontario (average of $246). Flying from Baton Rouge to Ontario in March is currently the most expensive (average of $327). 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 BTR to ONT?

Find hourly flight availability from Baton Rouge 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 September 17, 2025.

One of the essential ways to save on airfare from Baton Rouge to Ontario is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 6% on airfare.

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 September 17, 2025.
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
10,000 reviews

Boarding

7.5

Overall

7.2

Comfort

7.2

Crew

8.0

Entertainment

6.9

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
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Boarding

7.5

Overall

7.2

Comfort

7.2

Crew

8.0

Entertainment

6.9

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 fly from Baton Rouge to Ontario in about 7h 38m. The time it takes to get you to your destination can typically vary by up to . The distance between Baton Rouge and Ontario is about 1558 mi.

  • 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 30% 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, August is the cheapest month in which you can book a flight from Baton Rouge to Ontario (average of $246). Flying from Baton Rouge to Ontario in March is currently the most expensive (average of $327). 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 Baton Rouge to Ontario

See prices for flight routes from nearby airports that may be better suited for you.
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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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$438FlexibilityNo cancel feeOn-time71%

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