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Cheap flights from Ontario to Baton Rouge from $289

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Baton Rouge departing on 2/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Ontario to Baton Rouge

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:30 pm - 9:44 amONT-BTR
9h 14m1 stop
Delta Logo
6:00 am - 11:38 amBTR-ONT
7h 38m1 stop
$289Delta
Find Deal
Sat, Feb 21 - Wed, Feb 25
Delta Logo
10:30 pm - 9:52 amONT-BTR
9h 22m1 stop
Delta Logo
6:18 am - 4:13 pmBTR-ONT
11h 55m2 stops
$294Delta
Find Deal
Wed, Jan 7 - Tue, Jan 13
American Airlines Logo
9:59 am - 10:56 pmONT-BTR
10h 57m2 stops
American Airlines Logo
10:33 am - 6:20 pmBTR-ONT
9h 47m2 stops
$299American Airlines
Find Deal
Wed, Jan 7 - Tue, Jan 13
Delta Logo
10:25 pm - 9:50 amONT-BTR
9h 25m1 stop
Delta Logo
2:21 pm - 7:42 pmBTR-ONT
7h 21m1 stop
$344Delta
Find Deal
Wed, Nov 26 - Thu, Nov 27
American Airlines Logo
6:15 am - 4:00 pmONT-BTR
7h 45m2 stops
American Airlines Logo
5:00 am - 10:09 amBTR-ONT
7h 09m1 stop
$384American Airlines
Find Deal
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
6:15 am - 4:00 pmONT-BTR
7h 45m2 stops
American Airlines Logo
2:15 pm - 10:20 pmBTR-ONT
10h 05m2 stops
$389American Airlines
Find Deal
Sat, Feb 21 - Wed, Feb 25
American Airlines Logo
6:15 am - 4:00 pmONT-BTR
7h 45m2 stops
American Airlines Logo
2:15 pm - 10:20 pmBTR-ONT
10h 05m2 stops
$439American Airlines
Find Deal
Sat, Feb 21 - Wed, Feb 25
United Airlines Logo
6:05 am - 3:21 pmONT-BTR
7h 16m1 stop
United Airlines Logo
12:10 pm - 4:12 pmBTR-ONT
6h 02m1 stop
$449United Airlines
Find Deal
Tue, Nov 25 - Thu, Nov 27
United Airlines Logo
6:00 am - 5:28 pmONT-BTR
9h 28m1 stop
United Airlines Logo
6:03 pm - 9:49 pmBTR-ONT
5h 46m1 stop
$450United Airlines
Find Deal
Fri, Dec 5 - Mon, Dec 8
United Airlines Logo
6:05 am - 1:22 pmONT-BTR
5h 17m1 stop
United Airlines Logo
9:30 am - 5:34 pmBTR-ONT
10h 04m2 stops
$454United Airlines
Find Deal
Tue, Nov 25 - Thu, Nov 27

Delta flights from Ontario to Baton Rouge

Our best Delta deals on Ontario to Baton Rouge flight tickets
Delta
Feb 21
ONT10:30 pmOntario
9h 14m
1 stop
BTR9:44 amBaton Rouge Ryan
Feb 25
BTR6:00 amBaton Rouge Ryan
7h 38m
1 stop
ONT11:38 amOntario
$289
Find similar
Delta
Jan 7
ONT10:30 pmOntario
9h 22m
1 stop
BTR9:52 amBaton Rouge Ryan
Jan 13
BTR6:18 amBaton Rouge Ryan
11h 55m
2 stops
ONT4:13 pmOntario
$294
Find similar
Delta
Nov 26
ONT10:25 pmOntario
9h 25m
1 stop
BTR9:50 amBaton Rouge Ryan
Nov 27
BTR2:21 pmBaton Rouge Ryan
7h 21m
1 stop
ONT7:42 pmOntario
$344
Find similar

United Airlines flights from Ontario to Baton Rouge

Our best United Airlines deals on Ontario to Baton Rouge flight tickets
United Airlines
Nov 25
ONT6:05 amOntario
7h 16m
1 stop
BTR3:21 pmBaton Rouge Ryan
Nov 27
BTR12:10 pmBaton Rouge Ryan
6h 02m
1 stop
ONT4:12 pmOntario
$449
Find similar
United Airlines
Dec 5
ONT6:00 amOntario
9h 28m
1 stop
BTR5:28 pmBaton Rouge Ryan
Dec 8
BTR6:03 pmBaton Rouge Ryan
5h 46m
1 stop
ONT9:49 pmOntario
$450
Find similar
United Airlines
Nov 25
ONT6:05 amOntario
5h 17m
1 stop
BTR1:22 pmBaton Rouge Ryan
Nov 27
BTR9:30 amBaton Rouge Ryan
10h 04m
2 stops
ONT5:34 pmOntario
$454
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 30, 2025.
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

Price

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 2/21

10:30 pm-9:44 am

1 stop9h 14m

Baton Rouge Ryan

Wed 2/25

6:00 am-11:38 am

1 stop7h 38m

$289

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 1/7

10:30 pm-9:52 am

1 stop9h 22m

Baton Rouge Ryan

Tue 1/13

6:18 am-4:13 pm

2 stops11h 55m

$294

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 1/7

9:59 am-10:56 pm

2 stops10h 57m

Baton Rouge Ryan

Tue 1/13

10:33 am-6:20 pm

2 stops9h 47m

$299

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 11/26

10:25 pm-9:50 am

1 stop9h 25m

Baton Rouge Ryan

Thu 11/27

2:21 pm-7:42 pm

1 stop7h 21m

$344

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 2/21

6:15 am-4:00 pm

2 stops7h 45m

Baton Rouge Ryan

Wed 2/25

5:00 am-10:09 am

1 stop7h 09m

$384

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 2/21

6:15 am-4:00 pm

2 stops7h 45m

Baton Rouge Ryan

Wed 2/25

2:15 pm-10:20 pm

2 stops10h 05m

$389

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 2/21

6:15 am-4:00 pm

2 stops7h 45m

Baton Rouge Ryan

Wed 2/25

2:15 pm-10:20 pm

2 stops10h 05m

$439

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 11/25

6:05 am-3:21 pm

1 stop7h 16m

Baton Rouge Ryan

Thu 11/27

12:10 pm-4:12 pm

1 stop6h 02m

$449

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Fri 12/5

6:00 am-5:28 pm

1 stop9h 28m

Baton Rouge Ryan

Mon 12/8

6:03 pm-9:49 pm

1 stop5h 46m

$450

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 11/25

6:05 am-1:22 pm

1 stop5h 17m

Baton Rouge Ryan

Thu 11/27

9:30 am-5:34 pm

2 stops10h 04m

$454

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Baton Rouge from

How to get the cheapest flight ticket from Ontario to Baton Rouge

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Baton Rouge?

In general, November is the cheapest month to fly from Ontario to Baton Rouge. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $288. If you’re not able to fly to Baton Rouge in November, then August is your next best option. Flight prices from Ontario to Baton Rouge during August average around $330.

What is the cheapest day to depart on your flight to Baton Rouge?

The cheapest day to depart from Ontario to Baton Rouge is on a Tuesday. Travelers who choose to depart for Baton Rouge on a Tuesday will often find tickets for as low as $378. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $496. These prices are subject to change though, so be sure to set up a Price Alert for flights to Baton Rouge.

What is the cheapest time of day to depart on your flight to Baton Rouge?

Our most recent data shows that the best time of day to fly to Baton Rouge is in the evening. Flights from Ontario to Baton Rouge during this time can be as low as $382. In contrast, the most expensive time of day to depart to Baton Rouge is in the morning when prices are around $465.

When to book flights from Ontario to Baton Rouge

Are you open to changing your travel dates? Check out the ideal times to fly from Ontario to Baton Rouge according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Ontario to Baton Rouge (ONT to BTR) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Ontario to Baton Rouge

Direct flights

None
There are no direct flights from Ontario to Baton Rouge. There are no popular flight routes from Ontario to Baton Rouge.
Search flight deals

  • How far is Ontario to Baton Rouge Ryan by plane?

    The distance between Ontario and Baton Rouge Ryan is about 1560.7 mi. By plane, this route typically takes 5h 17m.

  • When did momondo last update prices for flights from Ontario Airport to Baton Rouge Ryan Airport?

    Prices for flights from Ontario Airport to Baton Rouge Ryan Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Ontario Airport to Baton Rouge Ryan Airport?

  • How old do you have to be to fly from Ontario Airport to Baton Rouge Ryan Airport?

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Ontario Airport to Baton Rouge Ryan Airport.

  • What documentation or ID do you need to fly to Baton Rouge Ryan Airport?

    The required travel and health documents for your Baton Rouge Ryan Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Baton Rouge Ryan Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Ontario to Baton Rouge?

Best airlines flying from Ontario to Baton Rouge

Compare and see reviews for airlines that fly from Ontario to Baton Rouge with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $294Free CancellationRating
7.4
8,998 reviews
Search United Airlines flights
American AirlinesPriceFrom $338Free CancellationRating
7.2
11,035 reviews
Search American Airlines flights

Traveling to a place near Baton Rouge?

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

Why use momondo?

Why should I use momondo to find a flight deal from Ontario to Baton Rouge?

It is quick and easy to find Ontario to Baton Rouge flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Baton Rouge that suits you.

Can I find flights from Ontario to Baton Rouge with flexible booking policies on momondo?

All flight searches from Ontario to Baton Rouge on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Ontario to Baton Rouge?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Baton Rouge from Ontario.

I’m not ready to book a flight from Ontario to Baton Rouge right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Baton Rouge, momondo offers a useful price alert feature which will track prices for flights to Baton Rouge from Ontario and alert you when they change.

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