$294+ Cheap flights from Baton Rouge to Ontario (BTR - ONT)
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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Oct 29 — Nov 51
Round-trip
1 adult, Economy
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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
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Best
Last-minute
One-way
Cheapest flights from Baton Rouge to OntarioExplore 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 September 29, 2026.
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 September 29, 2026.
This Delta deal was found by Cheapflights users on 9/26. 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.
Tue 10/61:36 pm -
1 stop8h 49m
Mon 10/1211:15 pm -
1 stop8h 17m
Deal found 9/26![Delta logo]()
$494
This United Airlines deal was found by Cheapflights users on 9/27. 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 11/144:13 pm -
1 stop7h 27m
Tue 11/176:00 am -
1 stop5h 26m
Deal found 9/27![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/234:07 pm -
1 stop7h 52m
Sun 10/256:00 am -
1 stop7h 38m
Deal found 9/28![United Airlines logo]()
$510
This American Airlines deal was found by Cheapflights users on 9/25. 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 12/225:27 pm -
1 stop7h 24m
Wed 1/67:00 am -
1 stop7h 57m
Deal found 9/25![American Airlines logo]()
$513
This American Airlines deal was found by Cheapflights users on 9/25. 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 12/245:27 pm -
1 stop8h 32m
Fri 1/15:44 am -
1 stop6h 17m
Deal found 9/25![American Airlines logo]()
$529
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/104:07 pm -
1 stop7h 52m
Sat 11/76:00 am -
2 stops11h 43m
Deal found 9/24![United Airlines logo]()
$539
This American Airlines deal was found by Cheapflights users on 9/25. 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 12/225:27 pm -
1 stop7h 24m
Mon 1/411:59 pm -
1 stop8h 08m
Deal found 9/25![American Airlines logo]()
$543
This Delta deal was found by Cheapflights users on 9/28. 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 10/23:48 pm -
1 stop8h 36m
Tue 10/67:07 am -
1 stop8h 05m
Deal found 9/28![Delta logo]()
$552
Best flights from Baton Rouge to OntarioDiscover carefully curated flight deals from Baton Rouge to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
Discover carefully curated flight deals from Baton Rouge to Ontario that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 29, 2026.
This United Airlines deal was found by Cheapflights users on 9/28. 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 11/144:13 pm -
1 stop7h 27m
Tue 11/176:00 am -
1 stop5h 26m
Deal found 9/28![United Airlines logo]()
$499
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/234:07 pm -
1 stop7h 52m
Sun 10/256:00 am -
1 stop7h 38m
Deal found 9/28![United Airlines logo]()
$510
Last-minute flights from Baton Rouge to OntarioDiscover last-minute flight deals from Baton Rouge to Ontario. Data last updated September 29, 2026 and is based on user searches.
Discover last-minute flight deals from Baton Rouge to Ontario. Data last updated September 29, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/28. 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 10/23:48 pm -
1 stop8h 36m
Tue 10/67:07 am -
1 stop8h 05m
Deal found 9/28![Delta logo]()
$552
This Delta deal was found by Cheapflights users on 9/28. 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 10/23:48 pm -
1 stop8h 36m
Fri 10/911:15 pm -
1 stop8h 19m
Deal found 9/28![Delta logo]()
$574
This Delta deal was found by Cheapflights users on 9/28. 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 10/23:48 pm -
2 stops9h 59m
Mon 10/510:00 pm -
1 stop9h 32m
Deal found 9/28![Delta logo]()
$579
This Delta deal was found by Cheapflights users on 9/26. 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.
Tue 10/61:36 pm -
1 stop8h 49m
Mon 10/1211:15 pm -
1 stop8h 17m
Deal found 9/26![Delta logo]()
$494
This Delta deal was found by Cheapflights users on 9/26. 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.
Tue 10/61:36 pm -
1 stop8h 49m
Tue 10/137:07 am -
1 stop8h 05m
Deal found 9/26![Delta logo]()
$583
This United Airlines deal was found by Cheapflights users on 9/24. 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 10/104:07 pm -
1 stop7h 52m
Sat 11/76:00 am -
2 stops11h 43m
Deal found 9/24![United Airlines logo]()
$539
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/234:07 pm -
1 stop7h 52m
Sun 10/256:00 am -
1 stop7h 38m
Deal found 9/28![United Airlines logo]()
$510
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/289:30 am -
2 stops10h 31m
Sun 11/15:00 am -
2 stops10h 33m
Deal found 9/28![United Airlines logo]()
$604
One-way flights from Baton Rouge to OntarioSearch for one-way flight options from Baton Rouge to Ontario. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
Search for one-way flight options from Baton Rouge to Ontario. Find affordable one-way fares based on user searches. Data last updated September 29, 2026.
This American Airlines deal was found by Cheapflights users on 9/27. 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 11/197:32 pm -
1 stop6h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![American Airlines logo]()
$294
This United Airlines deal was found by Cheapflights users on 9/26. 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.
Mon 11/234:13 pm -
1 stop7h 27m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 9/27. 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 11/199:30 am -
2 stops12h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$299
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/225:20 am -
2 stops8h 58m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$300
This United Airlines deal was found by Cheapflights users on 9/28. 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 10/305:00 am -
2 stops9h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$320
This American Airlines deal was found by Cheapflights users on 9/24. 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 12/265:27 pm -
1 stop6h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/24![American Airlines logo]()
$404
This Delta deal was found by Cheapflights users on 9/25. 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.
Tue 10/61:36 pm -
1 stop8h 49m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Delta logo]()
$476
This United Airlines deal was found by Cheapflights users on 9/27. 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 10/612:05 pm -
2 stops10h 53m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/27![United Airlines logo]()
$481
This United Airlines deal was found by Cheapflights users on 9/25. 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.
Sun 10/184:07 pm -
1 stop7h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$539
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 September 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $494 (Delta) |
One-way from | $294 (American Airlines) |
Popular in | February |
Cheapest in | September |
Average price | $418 |
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 7,457,451 searches. Data last updated September 29, 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
Cheapest round-trip
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Thu 11/19
9:30 am-8:15 pm
2 stops12h 45m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$299
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Mon 11/23
5:00 am-5:56 pm
2 stops14h 56m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$300
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Thu 10/22
5:20 am-12:18 pm
2 stops8h 58m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$300
Quickest round-trip
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Sat 12/26
5:27 pm-10:02 pm
1 stop6h 35m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$404
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Fri 10/30
4:13 pm-9:40 pm
1 stop7h 27m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$430
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Tue 10/6
1:36 pm-8:25 pm
1 stop8h 49m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$476
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Tue 10/6
12:05 pm-8:58 pm
2 stops10h 53m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$481
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Sat 11/14
4:13 pm-9:40 pm
1 stop7h 27m
Ontario
Tue 11/17
6:00 am-1:26 pm
1 stop5h 26m
$499
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Fri 10/23
4:07 pm-9:59 pm
1 stop7h 52m
Ontario
Sun 10/25
6:00 am-3:38 pm
1 stop7h 38m
$510
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Sun 10/18
4:07 pm-9:59 pm
1 stop7h 52m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$539
Sorted by cheapest first
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 September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- 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.
BTR-ONT
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.
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 September 29, 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.
Comfort
7.2
Entertainment
6.8
Overall
7.0
Crew
7.9
Food
6.4
Boarding
7.4
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Comfort
7.2
Entertainment
6.8
Overall
7.0
Crew
7.9
Food
6.4
Boarding
7.4
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
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.
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Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Baton Rouge to Ontario
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Complete your trip
Complete your trip to Ontario by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Baton Rouge to Ontario by cabin class
Find flights from Baton Rouge to Ontario, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Other flights to Ontario
Explore flights to Ontario departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 29, 2026.
Baton Rouge and Ontario flights
Browse other Baton Rouge and Ontario flight options. Last updated on September 29, 2026.
Other flights from Baton Rouge
Browse through other flights departing from Baton Rouge. Flights are based on user searches made on Cheapflights and were last updated on September 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 7,457,451 searches. Data last updated September 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$358 | Average$484 | FlexibilityNo cancel fee | On-time71% |