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Ontario

$309+ 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 5/27. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Jun 10 — Jun 171
Wed 6/10
Wed 6/17
1 adult, Economy
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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 May 11, 2026.

This American Airlines deal was found by Cheapflights users on 5/7. 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 6/307:36 pm
BTR
-
ONT
1 stop6h 23m
American Airlines
Tue 7/71:10 pm
ONT
-
BTR
2 stops7h 47m
American Airlines
Deal found 5/7$354
This Delta deal was found by Cheapflights users on 5/7. 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 9/126:00 am
BTR
-
ONT
1 stop7h 04m
Delta
Sun 9/2010:59 pm
ONT
-
BTR
1 stop8h 35m
Delta
Deal found 5/7$359
This American Airlines deal was found by Cheapflights users on 5/10. 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 8/155:08 pm
BTR
-
ONT
1 stop6h 04m
American Airlines
Sat 8/222:43 pm
ONT
-
BTR
1 stop6h 12m
American Airlines
Deal found 5/10$360
This United Airlines deal was found by Cheapflights users on 5/8. 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 6/256:09 pm
BTR
-
ONT
1 stop5h 46m
United Airlines
Sat 6/275:45 am
ONT
-
BTR
1 stop7h 49m
United Airlines
Deal found 5/8$386
This Delta deal was found by Cheapflights users on 5/9. 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 10/73:20 pm
BTR
-
ONT
1 stop8h 54m
Delta
Tue 10/2012:00 pm
ONT
-
BTR
1 stop8h 01m
Delta
Deal found 5/9$389
This Delta deal was found by Cheapflights users on 5/8. 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 7/224:00 pm
BTR
-
ONT
1 stop7h 50m
Delta
Wed 7/2910:00 pm
ONT
-
BTR
1 stop9h 39m
Delta
Deal found 5/8$419
This American Airlines deal was found by Cheapflights users on 5/7. 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 6/307:36 pm
BTR
-
ONT
1 stop6h 23m
American Airlines
Sat 7/45:34 am
ONT
-
BTR
1 stop8h 24m
American Airlines
Deal found 5/7$449
This United Airlines deal was found by Cheapflights users on 5/7. 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 8/154:07 pm
BTR
-
ONT
1 stop7h 52m
United Airlines
Sat 8/227:13 pm
ONT
-
BTR
2 stops11h 30m
United Airlines
Deal found 5/7$454
This United Airlines deal was found by Cheapflights users on 5/8. 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 7/214:09 pm
BTR
-
ONT
1 stop7h 46m
United Airlines
Sat 7/255:45 am
ONT
-
BTR
1 stop7h 49m
United Airlines
Deal found 5/8$459
This American Airlines deal was found by Cheapflights users on 5/6. 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 6/237:36 pm
BTR
-
ONT
1 stop6h 23m
American Airlines
Tue 6/302:18 pm
ONT
-
BTR
1 stop5h 51m
American Airlines
Deal found 5/6$460

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 May 11, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$354
(American Airlines)

One-way from

$309
(United Airlines)

Popular in

February

Cheapest in

August

Average price

$528
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
One-way flight from Baton Rouge Ryan to Ontario
Search Deals
Highest demand for flights based on searches. 35% potential increase in price ($333 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($64 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 11, 2026.
Use the filters below to find and compare flights from Baton Rouge to Ontario that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sat 10/10

6:14 pm-9:58 pm

1 stop5h 44m

Ontario

Sat 10/17

6:00 am-3:31 pm

1 stop7h 31m

$459

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sat 8/15

2:00 pm-10:58 pm

2 stops10h 58m

Ontario

Sat 8/22

7:13 pm-11:17 am

2 stops14h 04m

$459

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Mon 6/29

4:09 pm-9:55 pm

1 stop7h 46m

Ontario

Wed 7/8

6:00 am-8:46 am

2 stops24h 46m

$542

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Tue 8/18

12:00 pm-8:01 pm

2 stops10h 01m

Ontario

Sat 8/22

5:00 am-11:13 am

2 stops28h 13m

$567

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 7/1

4:00 pm-10:40 am

1 stop20h 40m

Ontario

Fri 7/10

11:48 am-9:56 pm

1 stop8h 08m

$573

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Fri 5/29

6:09 pm-9:55 pm

1 stop5h 46m

Ontario

Mon 6/1

5:45 am-3:34 pm

1 stop7h 49m

$608

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Mon 6/29

6:09 pm-9:55 pm

1 stop5h 46m

Ontario

Sun 7/5

5:45 am-9:35 pm

1 stop13h 50m

$648

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Thu 6/25

5:00 am-12:12 pm

2 stops9h 12m

Ontario

Sat 6/27

5:45 am-3:34 pm

1 stop7h 49m

$660
Cheapest one-way

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Wed 5/27

4:09 pm-9:55 pm

1 stop7h 46m

$309
Quickest one-way

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sun 6/28

6:09 pm-9:55 pm

1 stop5h 46m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/6

Showing 1-10 of 19 resultsSorted by cheapest first
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 May.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust 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, August is the cheapest month in which you can book a flight from Baton Rouge to Ontario (average of $433). Flying from Baton Rouge to Ontario in February is currently the most expensive (average of $1,317). 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.

How much does it cost to fly round-trip from Baton Rouge to Ontario?

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 May 11, 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
7.1
Good
11,667 reviews

Entertainment

6.9

Comfort

7.2

Crew

7.9

Boarding

7.5

Food

6.4

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,667 reviews
American Airlines
7.1
Good
11,667 reviews

Entertainment

6.9

Comfort

7.2

Crew

7.9

Boarding

7.5

Food

6.4

Overall

7.1

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

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 United Airlines fly from Baton Rouge to Ontario in about 5h 44m. 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 53% 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 $433). Flying from Baton Rouge to Ontario in February is currently the most expensive (average of $1,317). 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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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 May 11, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$488FlexibilityNo cancel feeOn-time71%

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