HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Baton Rouge

$199+ Cheap flights from Ontario to Baton Rouge (ONT - BTR)

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 2/25. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BTR
Feb 13 — Feb 201
Fri 2/13
Fri 2/20
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Ontario to Baton Rouge 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 Ontario to Baton Rouge

Discover tips and strategies to find the most affordable flight options for your journey from Ontario (ONT) to Baton Rouge (BTR). 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 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$334
(United Airlines)

One-way from

$199
(Delta)

Popular in

April

Cheapest in

August

Average price

$427
Provider with most accurate pricing for Ontario-Baton Rouge Ryan flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ontario-Baton Rouge Ryan flights.
Search Deals
From Ontario to Baton Rouge Ryan
Search Deals
One-way flight from Ontario to Baton Rouge Ryan
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($9 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from Ontario to Baton Rouge

Cheapest flights from Ontario to Baton Rouge
Explore the most affordable flight options available from Ontario to Baton Rouge. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 14, 2026.

This United Airlines deal was found by Cheapflights users on 1/11. 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 1/296:00 am
ONT
-
BTR
1 stop5h 17m
United Airlines
Sun 2/13:30 pm
BTR
-
ONT
1 stop8h 28m
United Airlines
Deal found 1/11$334
This Delta deal was found by Cheapflights users on 1/13. 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.
Wed 1/2810:30 pm
ONT
-
BTR
1 stop9h 22m
Delta
Tue 2/31:37 pm
BTR
-
ONT
1 stop9h 28m
Delta
Deal found 1/13$354
This United Airlines deal was found by Cheapflights users on 1/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 1/288:00 am
ONT
-
BTR
1 stop5h 58m
United Airlines
Sun 2/15:15 pm
BTR
-
ONT
1 stop6h 43m
United Airlines
Deal found 1/13$359
This Delta deal was found by Cheapflights users on 1/13. 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 2/261:15 pm
ONT
-
BTR
1 stop6h 46m
Delta
Sat 3/146:07 am
BTR
-
ONT
1 stop7h 33m
Delta
Deal found 1/13$369
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Tue 8/181:00 pm
ONT
-
BTR
2 stops7h 46m
United Airlines
Fri 8/285:20 am
BTR
-
ONT
2 stops14h 27m
United Airlines
Deal found 1/12$380
This Delta deal was found by Cheapflights users on 1/13. 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.
Wed 1/2810:30 pm
ONT
-
BTR
1 stop9h 22m
Delta
Mon 2/21:37 pm
BTR
-
ONT
2 stops12h 21m
Delta
Deal found 1/13$384
This United Airlines deal was found by Cheapflights users on 1/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/86:00 am
ONT
-
BTR
1 stop7h 32m
United Airlines
Sat 4/114:08 pm
BTR
-
ONT
1 stop7h 42m
United Airlines
Deal found 1/13$399
This United Airlines deal was found by Cheapflights users on 1/12. 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.
Tue 1/208:00 am
ONT
-
BTR
1 stop5h 58m
United Airlines
Tue 1/273:30 pm
BTR
-
ONT
1 stop8h 28m
United Airlines
Deal found 1/12$404
This Delta deal was found by Cheapflights users on 1/13. 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 2/1910:20 pm
ONT
-
BTR
1 stop9h 26m
Delta
Sun 2/226:18 am
BTR
-
ONT
1 stop7h 44m
Delta
Deal found 1/13$408

Cheapflights Fare Finder

 
Customize your flight search to find flights from Ontario to Baton Rouge 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 14, 2026.
Use the filters below to find and compare flights from Ontario to Baton Rouge that are best for you.

Fly from

Ontario

Fly to

Baton Rouge

Route

Depart

Return

Price

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Thu 1/29

6:00 am-1:17 pm

1 stop5h 17m

Baton Rouge Ryan

Sun 2/1

3:30 pm-9:58 pm

1 stop8h 28m

$334

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Thu 1/29

10:30 pm-9:52 am

1 stop9h 22m

Baton Rouge Ryan

Tue 2/3

6:18 am-11:31 am

1 stop7h 13m

$354

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 1/28

8:00 am-3:58 pm

1 stop5h 58m

Baton Rouge Ryan

Sun 2/1

5:15 pm-9:58 pm

1 stop6h 43m

$359

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Thu 2/26

1:15 pm-10:01 pm

1 stop6h 46m

Baton Rouge Ryan

Fri 3/13

1:36 pm-9:04 pm

1 stop9h 28m

$384

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 1/28

10:30 pm-9:52 am

1 stop9h 22m

Baton Rouge Ryan

Mon 2/2

1:37 pm-11:58 pm

2 stops12h 21m

$384

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 2/11

7:16 am-4:07 pm

1 stop6h 51m

Baton Rouge Ryan

Wed 2/18

4:27 pm-10:49 pm

1 stop8h 22m

$416

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sun 3/1

6:00 am-3:33 pm

1 stop7h 33m

Baton Rouge Ryan

Sat 3/14

4:07 pm-10:36 pm

1 stop8h 29m

$424

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 1/31

6:00 am-3:58 pm

1 stop7h 58m

Baton Rouge Ryan

Tue 2/3

3:30 pm-9:59 pm

1 stop8h 29m

$424

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 2/11

12:41 pm-10:01 pm

1 stop7h 20m

$240

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 4/4

6:00 am-3:32 pm

1 stop7h 32m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 17 results
1
2

Compare providers for flights from Ontario to Baton Rouge

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 Ontario to Baton Rouge in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice 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 Ontario-Baton Rouge flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Ontario-Baton Rouge flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from Ontario-Baton Rouge flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ontario-Baton Rouge flights, Cheapflights users trust eDreams the most. eDreams 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 Ontario-Baton Rouge 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 Ontario to Baton Rouge

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

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

Currently, August is the cheapest month in which you can book a flight from Ontario to Baton Rouge (average of $78). Flying from Ontario to Baton Rouge in February is currently the most expensive (average of $138). 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 Baton Rouge

Get insights into the airlines that provide service to Baton Rouge. 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 Baton Rouge. Reviews last updated January 14, 2026.
See what other customers who have flown with United Airlines and American Airlines from Ontario to Baton Rouge have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
9,156 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
United Airlines
7.4
Good
9,156 reviews
United Airlines
7.4
Good
9,156 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.
American Airlines
7.2
Good
11,118 reviews
United Airlines
7.4
Good
9,156 reviews

Entertainment

7.1

Boarding

7.7

Overall

7.4

Comfort

7.3

Food

6.6

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Kathy,Jun 2024

RDD - SFO

United has consistently been good. Every now and then there is a crew member that should probably retire, but most of them are excellent.

Related info for your journey

Find useful and relevant information for your journey from Ontario to Baton Rouge. 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 Ontario to Baton Rouge?

    Airlines like United Airlines and Delta fly from Ontario to Baton Rouge in about 5h 17m. The time it takes to get you to your destination can typically vary by up to 4h 05m. The distance between Ontario and Baton Rouge is about 1558 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Ontario to Baton Rouge round-trip?

    Currently priced at $288, United Airlines will fly you from Ontario to Baton Rouge and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on American Airlines for as low as $309. Users have found that United Airlines is 35% cheaper than the other options available to this destination.

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

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

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

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

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

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

    Currently, August is the cheapest month in which you can book a flight from Ontario to Baton Rouge (average of $78). Flying from Ontario to Baton Rouge in February is currently the most expensive (average of $138). 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

Traveling to a place near Baton Rouge?

Book flights to Baton Rouge if you plan to visit one of these locations
McComb
Saint Francisville
Denham Springs
Port Allen

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 Ontario to Baton Rouge

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

Top 2 airlines flying from Ontario to Baton Rouge

Discover the top 2 airlines that operate flights from Ontario to Baton Rouge. 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 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$294Average$550FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$309Average$453FlexibilityNo 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.