HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Ontario

$299+ 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 7/14. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Mei 20 — Mei 271
Rab 5/20
Rab 5/27
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 April 20, 2026.

This American Airlines deal was found by Cheapflights users on 4/16. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Jum 5/158:08 pm
BTR
-
ONT
1 stop5h 38m
American Airlines
Sen 5/1811:59 pm
ONT
-
BTR
1 stop8h 03m
American Airlines
Deal found 4/16$369
This American Airlines deal was found by Cheapflights users on 4/18. 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.
Jum 5/88:08 pm
BTR
-
ONT
1 stop5h 38m
American Airlines
Sen 5/1111:59 pm
ONT
-
BTR
1 stop8h 03m
American Airlines
Deal found 4/18$394
This Delta deal was found by Cheapflights users on 4/19. 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.
Rab 5/1310:27 am
BTR
-
ONT
1 stop10h 09m
Delta
Sel 5/1910:00 pm
ONT
-
BTR
1 stop9h 45m
Delta
Deal found 4/19$424
This United Airlines deal was found by Cheapflights users on 4/18. 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.
Jum 5/82:00 pm
BTR
-
ONT
2 stops10h 59m
United Airlines
Sen 5/1110:37 am
ONT
-
BTR
2 stops10h 09m
United Airlines
Deal found 4/18$429
This United Airlines deal was found by Cheapflights users on 4/17. 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.
Sel 5/1911:55 am
BTR
-
ONT
2 stops13h 04m
United Airlines
Sen 5/255:45 am
ONT
-
BTR
1 stop7h 49m
United Airlines
Deal found 4/17$430
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sel 5/1911:55 am
BTR
-
ONT
2 stops13h 04m
United Airlines
Min 5/245:45 am
ONT
-
BTR
1 stop5h 44m
United Airlines
Deal found 4/19$443
This Delta deal was found by Cheapflights users on 4/15. 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.
Sab 4/256:00 am
BTR
-
ONT
1 stop7h 36m
Delta
Sel 4/2812:49 pm
ONT
-
BTR
1 stop7h 07m
Delta
Deal found 4/15$465
This United Airlines deal was found by Cheapflights users on 4/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Jum 5/156:15 pm
BTR
-
ONT
1 stop5h 43m
United Airlines
Sel 5/196:00 am
ONT
-
BTR
1 stop7h 31m
United Airlines
Deal found 4/16$469
This American Airlines deal was found by Cheapflights users on 4/19. 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.
Sel 5/196:32 pm
BTR
-
ONT
1 stop6h 08m
American Airlines
Min 5/245:44 am
ONT
-
BTR
1 stop6h 04m
American Airlines
Deal found 4/19$472
This United Airlines deal was found by Cheapflights users on 4/19. 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.
Sen 5/186:15 pm
BTR
-
ONT
1 stop5h 43m
United Airlines
Sen 5/255:45 am
ONT
-
BTR
1 stop5h 44m
United Airlines
Deal found 4/19$473

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 April 20, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$369
(American Airlines)

One-way from

$299
(Delta)

Popular in

February

Cheapest in

August

Average price

$489
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 ($337 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 April 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 April 20, 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

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sab 6/6

4:00 pm-9:48 pm

1 stop7h 48m

Ontario

Sen 6/8

10:00 pm-9:42 am

1 stop9h 42m

$424

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Rab 5/13

1:37 pm-9:48 pm

1 stop10h 11m

Ontario

Jum 5/22

10:00 pm-9:45 am

1 stop9h 45m

$424
Quickest round-trip

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Rab 5/13

6:15 pm-9:58 pm

1 stop5h 43m

Ontario

Sab 5/16

6:00 am-1:23 pm

1 stop5h 23m

$469

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Kam 5/14

6:15 pm-9:58 pm

1 stop5h 43m

Ontario

Sel 5/19

6:00 am-1:23 pm

1 stop5h 23m

$494

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Jum 5/15

3:48 pm-9:48 pm

1 stop8h 00m

Ontario

Jum 5/22

10:00 pm-9:45 am

1 stop9h 45m

$494

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Sel 8/11

12:10 pm-8:04 pm

2 stops9h 54m

Ontario

Kam 8/27

7:13 pm-11:17 am

2 stops14h 04m

$504

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Rab 9/30

9:40 am-5:47 pm

2 stops10h 07m

Ontario

Sel 10/6

6:53 pm-11:04 am

2 stops14h 11m

$505

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Jum 5/1

6:15 pm-9:58 pm

1 stop5h 43m

Ontario

Min 5/3

6:00 am-1:23 pm

1 stop5h 23m

$519

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Jum 5/15

6:15 pm-9:58 pm

1 stop5h 43m

Ontario

Sel 5/19

6:00 am-3:31 pm

1 stop7h 31m

$533

Baton RougeOntario

BTR - ONT

BTRONT

Baton Rouge Ryan

Rab 5/20

6:15 pm-9:58 pm

1 stop5h 43m

Ontario

Min 5/24

5:45 am-1:29 pm

1 stop5h 44m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/17

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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 April.
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 $373). 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 April 20, 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
11,621 reviews

Overall

7.1

Crew

7.9

Comfort

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

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
11,621 reviews
American Airlines
7.1
Good
11,621 reviews

Overall

7.1

Crew

7.9

Comfort

7.2

Food

6.4

Boarding

7.5

Entertainment

6.9

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 Delta and United Airlines fly from Baton Rouge to Ontario in about 5h 43m. The time it takes to get you to your destination can typically vary by up to 2h 05m. 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 $338. American Airlines is 44% 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 $373). 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

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
Shreveport to Las Vegas flights
Baton Rouge to Las Vegas flights
New Orleans to Santa Ana flights
New Orleans to San Jose flights
New Orleans to Oakland flights
Baton Rouge to San Francisco flights
New Orleans to Burbank flights
Lafayette to Las Vegas flights
Lafayette to San Diego flights
New Orleans to Reno flights
Baton Rouge to Santa Ana flights
New Orleans to Palm Springs flights
Shreveport to Los Angeles flights
New Orleans to Sacramento flights
Lake Charles to Las Vegas flights
Shreveport to San Francisco flights
Baton Rouge to Los Angeles flights
Lafayette to Los Angeles flights
Baton Rouge to San Diego flights
Lake Charles to San Francisco flights
New Orleans to Monterey flights
Shreveport to San Diego flights
Monroe to Las Vegas flights
Lafayette to Ontario flights
Shreveport to Sacramento flights
Lafayette to San Francisco flights
Shreveport to Ontario flights
Monroe to Los Angeles flights
New Orleans to Long Beach flights
Alexandria to San Francisco flights
Shreveport to Santa Ana flights
Baton Rouge to Oakland flights
New Orleans to Santa Barbara flights
Lafayette to Sacramento flights
Baton Rouge to Sacramento flights
Shreveport to San Jose flights
Alexandria to Las Vegas flights
Baton Rouge to Reno flights
Lake Charles to Los Angeles flights
New Orleans to Santa Rosa flights
Baton Rouge to Palm Springs 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 April 20, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$338Average$484FlexibilityNo 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.