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$195+ 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 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
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 August 14, 2025.

Round-trip from

$289
(American Airlines)

One-way from

$195
(Delta)

Popular in

December

Cheapest in

March

Average price

$313
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. 9% potential increase in price ($44 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in August 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 August 14, 2025.

This American Airlines deal was found by Cheapflights users on 8/11. 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 9/410:08 amBTR - ONT
1 stop5h 45mAmerican Airlines
Wed 9/102:54 pmONT - BTR
1 stop6h 17mAmerican Airlines
Deal found 8/11$289
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/42:20 pmBTR - ONT
2 stops10h 20mDelta
Sun 9/711:45 amONT - BTR
1 stop8h 28mDelta
Deal found 8/13$319
This American Airlines deal was found by Cheapflights users on 8/11. 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 10/2512:25 pmBTR - ONT
1 stop6h 03mAmerican Airlines
Tue 10/2812:43 pmONT - BTR
1 stop5h 32mAmerican Airlines
Deal found 8/11$379
This Delta deal was found by Cheapflights users on 8/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/246:00 amBTR - ONT
1 stop7h 24mDelta
Fri 11/2812:00 pmONT - BTR
1 stop8h 00mDelta
Deal found 8/13$399
This Delta deal was found by Cheapflights users on 8/12. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/166:00 amBTR - ONT
1 stop6h 35mDelta
Mon 8/2511:45 amONT - BTR
1 stop8h 28mDelta
Deal found 8/12$402
This United Airlines deal was found by Cheapflights users on 8/11. 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 8/284:03 pmBTR - ONT
1 stop7h 22mUnited Airlines
Mon 9/16:04 amONT - BTR
1 stop5h 15mUnited Airlines
Deal found 8/11$404
This United Airlines deal was found by Cheapflights users on 8/12. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/3012:10 pmBTR - ONT
2 stops10h 33mUnited Airlines
Sat 9/66:04 amONT - BTR
1 stop5h 15mUnited Airlines
Deal found 8/12$409

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 August 14, 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

Thu 9/4

10:08 am-1:53 pm

1 stop5h 45m

Ontario

Wed 9/10

2:54 pm-11:11 pm

1 stop6h 17m

$289

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 9/4

2:20 pm-10:40 pm

2 stops10h 20m

Ontario

Sun 9/7

11:45 am-10:13 pm

1 stop8h 28m

$319

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Tue 11/4

3:56 pm-9:37 pm

1 stop7h 41m

Ontario

Wed 11/26

6:05 am-3:21 pm

1 stop7h 16m

$379

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sat 10/25

12:25 pm-4:28 pm

1 stop6h 03m

Ontario

Tue 10/28

12:43 pm-8:15 pm

1 stop5h 32m

$379

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 11/27

6:00 am-11:24 am

1 stop7h 24m

$195

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sat 1/17

6:00 am-11:38 am

1 stop7h 38m

$199

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sun 1/18

6:00 am-11:38 am

1 stop7h 38m

$207

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 11/27

5:07 am-12:32 pm

2 stops9h 25m

$249

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sun 8/24

4:03 pm-9:25 pm

1 stop7h 22m

$328

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sun 10/19

4:55 pm-10:22 pm

1 stop7h 27m

$390

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/11

Showing 1-10 of 13 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 $328). 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 August 14, 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 August 14, 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

Crew

8.0

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

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

Crew

8.0

Boarding

7.5

Food

6.5

Overall

7.2

Entertainment

6.9

Comfort

7.2

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.

  • 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 27% 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 $328). 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

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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 August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$426FlexibilityNo cancel feeOn-time71%

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