$295+ 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 9/26. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — ONT
Oct 10 — Oct 171
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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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 10, 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 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:07 pm -
1 stop7h 52m
Sun 10/46:00 am -
1 stop5h 20m
Deal found 9/9![United Airlines logo]()
$394
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:29 pm -
1 stop7h 38m
Sat 10/310:25 am -
1 stop5h 47m
Deal found 9/9![American Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:00 pm -
2 stops10h 53m
Sat 10/36:00 am -
1 stop7h 32m
Deal found 9/9![United Airlines logo]()
$422
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/228:15 am -
1 stop7h 10m
Sat 9/262:22 pm -
1 stop6h 31m
Deal found 9/7![American Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 9/241:32 pm -
2 stops12h 15m
Mon 9/2810:00 pm -
1 stop9h 39m
Deal found 9/9![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 9/5. 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 10/31:32 pm -
1 stop7h 09m
Sat 10/1012:16 pm -
1 stop6h 37m
Deal found 9/5![Delta logo]()
$438
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/227:15 am -
2 stops8h 46m
Sat 9/266:00 am -
1 stop7h 32m
Deal found 9/7![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/8. 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.
Sat 11/144:13 pm -
1 stop7h 27m
Tue 11/176:00 am -
1 stop5h 26m
Deal found 9/8![United Airlines logo]()
$459
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 10, 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 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:07 pm -
1 stop7h 52m
Sun 10/46:00 am -
1 stop5h 20m
Deal found 9/9![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 9/241:32 pm -
2 stops12h 15m
Mon 9/2810:00 pm -
1 stop9h 39m
Deal found 9/9![Delta logo]()
$434
This Delta deal was found by Cheapflights users on 9/5. 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 10/31:32 pm -
1 stop7h 09m
Sat 10/1012:16 pm -
1 stop6h 37m
Deal found 9/5![Delta logo]()
$439
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/227:15 am -
2 stops8h 46m
Sat 9/266:00 am -
1 stop7h 32m
Deal found 9/7![United Airlines logo]()
$454
This United Airlines deal was found by Cheapflights users on 9/9. 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 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 9/9![United Airlines logo]()
$459
This United Airlines deal was found by Cheapflights users on 9/5. 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 11/232:01 pm -
2 stops10h 47m
Thu 12/35:45 am -
1 stop7h 30m
Deal found 9/5![United Airlines logo]()
$484
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/31:55 pm -
2 stops9h 03m
Sat 10/106:00 am -
1 stop5h 20m
Deal found 9/7![United Airlines logo]()
$484
Last-minute flights from Baton Rouge to OntarioDiscover last-minute flight deals from Baton Rouge to Ontario. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Baton Rouge to Ontario. Data last updated September 10, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/9. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/122:29 pm -
1 stop7h 38m
Sat 10/310:25 am -
1 stop5h 47m
Deal found 9/9![American Airlines logo]()
$417
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/1212:00 pm -
2 stops10h 53m
Sat 10/36:00 am -
1 stop7h 32m
Deal found 9/9![United Airlines logo]()
$422
This American Airlines deal was found by Cheapflights users on 9/7. 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 9/228:15 am -
1 stop7h 10m
Sat 9/262:22 pm -
1 stop6h 31m
Deal found 9/7![American Airlines logo]()
$429
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Tue 9/227:15 am -
2 stops8h 46m
Sat 9/266:00 am -
1 stop7h 32m
Deal found 9/7![United Airlines logo]()
$454
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 9/241:32 pm -
2 stops12h 15m
Mon 9/2810:00 pm -
1 stop9h 39m
Deal found 9/9![Delta logo]()
$434
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/264:07 pm -
1 stop7h 52m
Sun 10/46:00 am -
1 stop5h 20m
Deal found 9/9![United Airlines logo]()
$394
This Delta deal was found by Cheapflights users on 9/5. 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 10/31:32 pm -
1 stop7h 09m
Sat 10/1012:16 pm -
1 stop6h 37m
Deal found 9/5![Delta logo]()
$438
This United Airlines deal was found by Cheapflights users on 9/7. 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 10/34:07 pm -
1 stop7h 52m
Sat 10/106:00 am -
1 stop5h 20m
Deal found 9/7![United Airlines logo]()
$479
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 10, 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 10, 2026.
This United Airlines deal was found by Cheapflights users on 9/5. 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 9/264:07 pm -
1 stop7h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$295
This United Airlines deal was found by Cheapflights users on 9/5. 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 11/162:01 pm -
2 stops10h 47m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/7. 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.
Mon 10/54:07 pm -
1 stop7h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![United Airlines logo]()
$345
This Delta deal was found by Cheapflights users on 9/7. 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.
Sun 10/1112:36 pm -
1 stop7h 46m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/7![Delta logo]()
$353
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/221:32 pm -
1 stop8h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$354
This United Airlines deal was found by Cheapflights users on 9/5. 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 10/165:20 am -
2 stops9h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/5![United Airlines logo]()
$445
This Delta deal was found by Cheapflights users on 9/9. 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.
Tue 9/156:03 am -
1 stop7h 02m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Delta logo]()
$466
This United Airlines deal was found by Cheapflights users on 9/9. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/136:14 pm -
1 stop5h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![United Airlines logo]()
$491
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 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $394 (United Airlines) |
One-way from | $295 (United 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 10, 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
Sat 9/26
1:55 pm-10:59 pm
2 stops11h 04m
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 11/12
5:00 am-12:29 pm
2 stops9h 29m
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
Mon 11/16
2:01 pm-10:48 pm
2 stops10h 47m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$339
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Mon 10/5
4:07 pm-9:59 pm
1 stop7h 52m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$345
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Fri 10/16
4:07 pm-9:59 pm
1 stop7h 52m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$345
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Sun 10/11
12:36 pm-6:22 pm
1 stop7h 46m
Ontario
Wed 12/31
12:00 am-2:00 am
Nonstop0h 00m
$353
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Sat 9/26
4:07 pm-9:59 pm
1 stop7h 52m
Ontario
Sun 10/4
6:00 am-1:20 pm
1 stop5h 20m
$394
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Thu 9/24
1:32 pm-11:47 pm
2 stops12h 15m
Ontario
Mon 9/28
10:00 pm-9:39 am
1 stop9h 39m
$434
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Sat 10/3
1:32 pm-6:41 pm
1 stop7h 09m
Ontario
Sat 10/10
12:16 pm-8:53 pm
1 stop6h 37m
$439
Baton RougeOntario
BTR Baton Rouge Ryan - ONT Ontario
BTRONT
Baton Rouge Ryan
Tue 9/22
7:15 am-2:01 pm
2 stops8h 46m
Ontario
Sat 9/26
6:00 am-3:32 pm
1 stop7h 32m
$454
Showing 1-10 of 16 resultsSorted 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.
Cheapflights Insights
Everything you need to know about your flight 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 September 10, 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.
Food
6.4
Boarding
7.5
Crew
7.9
Overall
7.1
Comfort
7.2
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Food
6.4
Boarding
7.5
Crew
7.9
Overall
7.1
Comfort
7.2
Entertainment
6.8
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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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.
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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 10, 2026.
Baton Rouge and Ontario flights
Browse other Baton Rouge and Ontario flight options. Last updated on September 10, 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 10, 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 10, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$358 | Average$484 | FlexibilityNo cancel fee | On-time71% |