$190+ Cheap flights from Ontario to Baton Rouge (ONT - BTR)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/26. Fares are subject to change and may not be available on all flights or dates of travel.
ONT — BTR
Dec 5 — Dec 121
Round-trip
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
Cheapest
Best
Last-minute
One-way
Cheapest flights from Ontario to Baton RougeExplore 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 November 5, 2026.
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 November 5, 2026.
This Delta deal was found by Cheapflights users on 11/3. 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.
Fri 12/412:20 pm -
1 stop7h 48m
Sat 12/51:52 pm -
1 stop8h 03m
Deal found 11/3![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 11/3. 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.
Fri 12/46:00 am -
2 stops10h 19m
Sun 12/63:59 pm -
1 stop7h 56m
Deal found 11/3![Delta logo]()
$384
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/165:45 am -
1 stop5h 44m
Sun 12/203:59 pm -
1 stop8h 12m
Deal found 11/2![United Airlines logo]()
$397
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Fri 12/49:35 am -
2 stops11h 18m
Sun 12/67:36 pm -
1 stop6h 12m
Deal found 11/2![American Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/186:00 am -
1 stop7h 38m
Sun 11/224:13 pm -
1 stop7h 37m
Deal found 11/3![United Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Fri 12/46:00 am -
2 stops11h 42m
Sun 12/65:00 am -
2 stops9h 34m
Deal found 11/2![United Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/25:45 am -
1 stop5h 44m
Wed 12/93:56 pm -
1 stop8h 03m
Deal found 11/2![United Airlines logo]()
$499
Best flights from Ontario to Baton RougeDiscover carefully curated flight deals from Ontario to Baton Rouge that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
Discover carefully curated flight deals from Ontario to Baton Rouge that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated November 5, 2026.
This Delta deal was found by Cheapflights users on 11/3. 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 12/512:20 pm -
1 stop6h 33m
Wed 12/91:52 pm -
1 stop9h 06m
Deal found 11/3![Delta logo]()
$379
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Fri 12/41:02 pm -
1 stop7h 51m
Sun 12/67:36 pm -
1 stop6h 12m
Deal found 11/4![American Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 10/31. 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 12/165:45 am -
1 stop5h 44m
Sun 12/203:59 pm -
1 stop8h 12m
Deal found 10/31![United Airlines logo]()
$397
This Delta deal was found by Cheapflights users on 11/3. 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 12/312:20 pm -
1 stop7h 48m
Sat 12/51:52 pm -
1 stop8h 03m
Deal found 11/3![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 11/3. 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.
Fri 12/46:00 am -
2 stops10h 19m
Sun 12/63:59 pm -
2 stops9h 58m
Deal found 11/3![Delta logo]()
$389
This United Airlines deal was found by Cheapflights users on 10/31. 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 2/26:00 am -
1 stop5h 34m
Sat 2/64:01 pm -
1 stop8h 14m
Deal found 10/31![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 11/3. 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 1/205:00 am -
2 stops10h 31m
Sat 1/234:01 pm -
1 stop8h 14m
Deal found 11/3![United Airlines logo]()
$504
Last-minute flights from Ontario to Baton RougeDiscover last-minute flight deals from Ontario to Baton Rouge. Data last updated November 5, 2026 and is based on user searches.
Discover last-minute flight deals from Ontario to Baton Rouge. Data last updated November 5, 2026 and is based on user searches.
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/186:00 am -
1 stop7h 38m
Sun 11/224:13 pm -
1 stop7h 37m
Deal found 11/3![United Airlines logo]()
$451
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/25:45 am -
1 stop5h 44m
Wed 12/93:56 pm -
1 stop8h 03m
Deal found 11/2![United Airlines logo]()
$499
This Delta deal was found by Cheapflights users on 11/3. 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.
Fri 12/412:20 pm -
1 stop7h 48m
Sat 12/51:52 pm -
1 stop8h 03m
Deal found 11/3![Delta logo]()
$379
This Delta deal was found by Cheapflights users on 11/3. 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.
Fri 12/46:00 am -
2 stops10h 19m
Sun 12/63:59 pm -
1 stop7h 56m
Deal found 11/3![Delta logo]()
$384
This American Airlines deal was found by Cheapflights users on 11/2. 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.
Fri 12/49:35 am -
2 stops11h 18m
Sun 12/67:36 pm -
1 stop6h 12m
Deal found 11/2![American Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Fri 12/46:00 am -
2 stops11h 42m
Sun 12/65:00 am -
2 stops9h 34m
Deal found 11/2![United Airlines logo]()
$477
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/165:45 am -
1 stop5h 44m
Sun 12/203:59 pm -
1 stop8h 12m
Deal found 11/2![United Airlines logo]()
$397
One-way flights from Ontario to Baton RougeSearch for one-way flight options from Ontario to Baton Rouge. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
Search for one-way flight options from Ontario to Baton Rouge. Find affordable one-way fares based on user searches. Data last updated November 5, 2026.
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/266:00 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![American Airlines logo]()
$190
This American Airlines deal was found by Cheapflights users on 11/4. 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.
Sun 11/226:00 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/4![American Airlines logo]()
$230
This United Airlines deal was found by Cheapflights users on 11/2. 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 11/256:00 am -
1 stop7h 38m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$239
This Delta deal was found by Cheapflights users on 11/2. 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 11/266:00 am -
2 stops10h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![Delta logo]()
$244
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/246:00 am -
1 stop6h 13m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![American Airlines logo]()
$258
This American Airlines deal was found by Cheapflights users on 11/1. 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 11/259:20 am -
2 stops8h 43m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/1![American Airlines logo]()
$286
This United Airlines deal was found by Cheapflights users on 11/2. 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 11/266:00 am -
1 stop5h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/2![United Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 10/31. 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 2/135:00 am -
2 stops10h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 10/31![United Airlines logo]()
$350
This Delta deal was found by Cheapflights users on 11/3. 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 1/27:06 am -
1 stop9h 07m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 11/3![Delta logo]()
$433
Find 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 November 5, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $379 (Delta) |
One-way from | $190 (American Airlines) |
Popular in | May |
Cheapest in | November |
Average price | $364 |
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 7,457,451 searches. Data last updated November 5, 2026.
Use the filters below to find and compare flights from Ontario to Baton Rouge that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Thu 11/26
6:00 am-2:13 pm
1 stop6h 13m
Baton Rouge Ryan
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$190
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Sat 2/13
7:05 am-4:06 pm
1 stop7h 01m
Baton Rouge Ryan
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$239
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Wed 11/25
6:00 am-3:38 pm
1 stop7h 38m
Baton Rouge Ryan
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$239
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Thu 11/26
6:00 am-6:53 pm
2 stops10h 53m
Baton Rouge Ryan
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$244
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Thu 11/26
5:00 am-3:38 pm
2 stops8h 38m
Baton Rouge Ryan
Wed 12/31
12:00 am-10:00 pm
Nonstop0h 00m
$244
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Sat 12/5
12:20 pm-8:53 pm
1 stop6h 33m
Baton Rouge Ryan
Wed 12/9
1:52 pm-8:58 pm
1 stop9h 06m
$379
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Thu 12/3
12:20 pm-10:08 pm
1 stop7h 48m
Baton Rouge Ryan
Sat 12/5
1:52 pm-7:55 pm
1 stop8h 03m
$379
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Fri 12/4
1:02 pm-10:53 pm
1 stop7h 51m
Baton Rouge Ryan
Sun 12/6
7:36 pm-11:48 pm
1 stop6h 12m
$389
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Fri 12/4
6:00 am-6:19 pm
2 stops10h 19m
Baton Rouge Ryan
Sun 12/6
3:59 pm-11:57 pm
2 stops9h 58m
$389
OntarioBaton Rouge
ONT Ontario - BTR Baton Rouge Ryan
ONTBTR
Ontario
Wed 12/16
5:45 am-1:29 pm
1 stop5h 44m
Baton Rouge Ryan
Sun 12/20
3:59 pm-10:11 pm
1 stop8h 12m
$397
Showing 1-10 of 12 resultsSorted by cheapest first
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 November.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Ontario-Baton Rouge flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ontario-Baton Rouge flight deals on Cheapflights vs. FlightHub >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 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 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.
ONT-BTR
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
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 November 5, 2026.
See what other customers who have flown with 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.
Crew
7.9
Overall
7.0
Food
6.4
Comfort
7.2
Boarding
7.4
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
Crew
7.9
Overall
7.0
Food
6.4
Comfort
7.2
Boarding
7.4
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreJeremy,Sep 2025
SAN - PHL
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.
Traveling to a place near Baton Rouge?
Book flights to Baton Rouge if you plan to visit one of these locationsSaint Francisville
McComb
Denham Springs
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
Baton Rouge flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Ontario
Popular flights
Alternative routes for Ontario to Baton Rouge
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Baton Rouge
Explore flights to Baton Rouge departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.
Complete your trip
Complete your trip to Baton Rouge by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Ontario to Baton Rouge by cabin class
Find flights from Ontario to Baton Rouge, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ontario and Baton Rouge flights
Browse other Ontario and Baton Rouge flight options. Last updated on November 5, 2026.
Other flights from Ontario
Browse through other flights departing from Ontario. Flights are based on user searches made on Cheapflights and were last updated on November 5, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top airline flying from Ontario to Baton Rouge
Discover the top airline 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 7,457,451 searches. Data last updated November 5, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$334 | Average$484 | FlexibilityNo cancel fee | On-time71% |