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Cheap flights from Ontario to Baton Rouge from $249

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Ontario to Baton Rouge departing on 9/15. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Ontario to Baton Rouge

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
10:00 pm - 9:39 am
ONT
-
BTR
9h 39m
1 stop
Delta Logo
1:27 pm - 6:29 pm
BTR
-
ONT
7h 02m
1 stop
$349Delta
Mon, Aug 17 - Thu, Aug 27
Delta Logo
10:00 pm - 9:39 am
ONT
-
BTR
9h 39m
1 stop
Delta Logo
3:57 pm - 9:52 pm
BTR
-
ONT
7h 55m
1 stop
$374Delta
Mon, Aug 3 - Fri, Aug 14
American Airlines Logo
7:05 am - 5:43 pm
ONT
-
BTR
8h 38m
1 stop
American Airlines Logo
5:08 pm - 10:59 pm
BTR
-
ONT
7h 51m
1 stop
$377American Airlines
Tue, Aug 25 - Wed, Sep 2
Delta Logo
12:00 pm - 8:46 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
1:27 pm - 6:29 pm
BTR
-
ONT
7h 02m
1 stop
$394Delta
Sat, Aug 8 - Sat, Aug 15
Delta Logo
12:00 pm - 8:46 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
1:27 pm - 6:29 pm
BTR
-
ONT
7h 02m
1 stop
$395Delta
Sat, Aug 8 - Sat, Aug 15
Delta Logo
10:00 pm - 9:39 am
ONT
-
BTR
9h 39m
1 stop
Delta Logo
3:57 pm - 9:52 pm
BTR
-
ONT
7h 55m
1 stop
$399Delta
Thu, Aug 6 - Fri, Aug 14
Delta Logo
10:00 pm - 9:39 am
ONT
-
BTR
9h 39m
1 stop
Delta Logo
3:57 pm - 9:52 pm
BTR
-
ONT
7h 55m
1 stop
$414Delta
Sun, Aug 16 - Sun, Aug 30
Delta Logo
10:00 pm - 9:44 am
ONT
-
BTR
9h 44m
1 stop
Delta Logo
4:00 pm - 9:48 pm
BTR
-
ONT
7h 48m
1 stop
$419Delta
Mon, Jun 29 - Fri, Jul 3
American Airlines Logo
2:15 pm - 10:57 pm
ONT
-
BTR
6h 42m
1 stop
American Airlines Logo
2:12 pm - 7:59 pm
BTR
-
ONT
7h 47m
1 stop
$421American Airlines
Fri, Jul 3 - Tue, Jul 7
Delta Logo
12:00 pm - 8:46 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
3:57 pm - 9:52 pm
BTR
-
ONT
7h 55m
1 stop
$424Delta
Sat, Aug 22 - Sun, Aug 30

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American Airlines flights from Ontario to Baton Rouge

Our best American Airlines deals on Ontario to Baton Rouge flight tickets
American Airlines
Aug 25
ONT7:05 amOntario
8h 38m
1 stop
BTR5:43 pmBaton Rouge Ryan
Sep 2
BTR5:08 pmBaton Rouge Ryan
7h 51m
1 stop
ONT10:59 pmOntario
$377
American Airlines
Jul 3
ONT2:15 pmOntario
6h 42m
1 stop
BTR10:57 pmBaton Rouge Ryan
Jul 7
BTR2:12 pmBaton Rouge Ryan
7h 47m
1 stop
ONT7:59 pmOntario
$421
American Airlines
Jul 10
ONT2:15 pmOntario
5h 52m
1 stop
BTR10:07 pmBaton Rouge Ryan
Jul 12
BTR6:00 amBaton Rouge Ryan
5h 29m
1 stop
ONT9:29 amOntario
$429

United Airlines flights from Ontario to Baton Rouge

Our best United Airlines deals on Ontario to Baton Rouge flight tickets
United Airlines
Jun 29
ONT5:45 amOntario
7h 49m
1 stop
BTR3:34 pmBaton Rouge Ryan
Jul 3
BTR2:05 pmBaton Rouge Ryan
10h 32m
2 stops
ONT10:37 pmOntario
$448
United Airlines
Aug 5
ONT5:45 amOntario
7h 49m
1 stop
BTR3:34 pmBaton Rouge Ryan
Aug 13
BTR6:14 pmBaton Rouge Ryan
5h 45m
1 stop
ONT9:59 pmOntario
$449
United Airlines
Aug 25
ONT9:15 amOntario
6h 18m
1 stop
BTR5:33 pmBaton Rouge Ryan
Sep 2
BTR9:35 amBaton Rouge Ryan
12h 26m
2 stops
ONT8:01 pmOntario
$454

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 June 19, 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

Price

Cheapest round-trip

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Mon 8/17

10:00 pm-9:39 am

1 stop9h 39m

Baton Rouge Ryan

Thu 8/27

1:27 pm-6:29 pm

1 stop7h 02m

$349

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Mon 8/3

10:00 pm-9:39 am

1 stop9h 39m

Baton Rouge Ryan

Fri 8/14

3:57 pm-9:52 pm

1 stop7h 55m

$374

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 8/25

7:05 am-5:43 pm

1 stop8h 38m

Baton Rouge Ryan

Wed 9/2

5:08 pm-10:59 pm

1 stop7h 51m

$377
Quickest round-trip

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 8/8

12:00 pm-8:46 pm

1 stop6h 46m

Baton Rouge Ryan

Sat 8/15

1:27 pm-6:29 pm

1 stop7h 02m

$394

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 8/8

12:00 pm-8:46 pm

1 stop6h 46m

Baton Rouge Ryan

Sat 8/15

1:27 pm-6:29 pm

1 stop7h 02m

$395

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Thu 8/6

10:00 pm-9:39 am

1 stop9h 39m

Baton Rouge Ryan

Fri 8/14

3:57 pm-9:52 pm

1 stop7h 55m

$399

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sun 8/16

10:00 pm-9:39 am

1 stop9h 39m

Baton Rouge Ryan

Sun 8/30

3:57 pm-9:52 pm

1 stop7h 55m

$414

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Mon 6/29

10:00 pm-9:44 am

1 stop9h 44m

Baton Rouge Ryan

Fri 7/3

4:00 pm-9:48 pm

1 stop7h 48m

$419

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Fri 7/3

2:15 pm-10:57 pm

1 stop6h 42m

Baton Rouge Ryan

Tue 7/7

2:12 pm-7:59 pm

1 stop7h 47m

$421

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 8/22

12:00 pm-8:46 pm

1 stop6h 46m

Baton Rouge Ryan

Sun 8/30

3:57 pm-9:52 pm

1 stop7h 55m

$424

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 typical price of a round-trip flight between Ontario and Baton Rouge?

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 $0. 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 $348.

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

Fastest flight time

5h 44m

Direct flights

None
The fastest flight from Ontario to Baton Rouge takes 5h 44m
There are no direct flights from Ontario to Baton Rouge. There are no popular flight routes from Ontario to Baton Rouge.
Search flight deals

Frequently asked questions about flying from Ontario to Baton Rouge

  • 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 44m.

  • 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
American AirlinesPriceFrom $333Free CancellationRating
7.1
11,688 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
Port Allen
McComb
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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