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Cheap flights from Ontario to Baton Rouge from $219

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 4/22. 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.
American Airlines Logo
2:08 pm - 10:46 pm
ONT
-
BTR
6h 38m
1 stop
American Airlines Logo
5:40 am - 10:04 am
BTR
-
ONT
6h 24m
1 stop
$347American Airlines
Sat, Apr 18 - Sat, Apr 25
American Airlines Logo
11:59 pm - 10:02 am
ONT
-
BTR
8h 03m
1 stop
American Airlines Logo
2:33 pm - 6:37 pm
BTR
-
ONT
6h 04m
1 stop
$349American Airlines
Sat, Apr 11 - Sat, Apr 18
American Airlines Logo
11:59 pm - 10:02 am
ONT
-
BTR
8h 03m
1 stop
American Airlines Logo
10:35 am - 7:34 pm
BTR
-
ONT
10h 59m
2 stops
$354American Airlines
Sat, Apr 11 - Sat, Apr 18
Delta Logo
10:00 pm - 9:45 am
ONT
-
BTR
9h 45m
1 stop
Delta Logo
1:36 pm - 9:48 pm
BTR
-
ONT
10h 12m
1 stop
$369Delta
Thu, May 28 - Sun, May 31
Delta Logo
10:15 pm - 9:46 am
ONT
-
BTR
9h 31m
1 stop
Delta Logo
4:00 pm - 11:44 pm
BTR
-
ONT
9h 44m
2 stops
$374Delta
Tue, Apr 14 - Tue, Apr 21
Delta Logo
10:25 pm - 9:42 am
ONT
-
BTR
9h 17m
1 stop
Delta Logo
4:00 pm - 9:00 pm
BTR
-
ONT
7h 00m
1 stop
$394Delta
Fri, Apr 10 - Tue, Apr 14
United Airlines Logo
5:10 am - 7:37 pm
ONT
-
BTR
12h 27m
2 stops
United Airlines Logo
5:00 am - 12:20 pm
BTR
-
ONT
9h 20m
2 stops
$400United Airlines
Tue, Apr 14 - Tue, Apr 21
Delta Logo
12:49 pm - 9:56 pm
ONT
-
BTR
7h 07m
1 stop
Delta Logo
4:00 pm - 9:00 pm
BTR
-
ONT
7h 00m
1 stop
$413Delta
Wed, Apr 22 - Tue, Apr 28
Delta Logo
12:08 pm - 10:00 pm
ONT
-
BTR
7h 52m
1 stop
Delta Logo
1:37 pm - 9:48 pm
BTR
-
ONT
10h 11m
1 stop
$422Delta
Thu, May 7 - Mon, May 11
Delta Logo
12:49 pm - 9:56 pm
ONT
-
BTR
7h 07m
1 stop
Delta Logo
4:00 pm - 9:00 pm
BTR
-
ONT
7h 00m
1 stop
$424Delta
Fri, Apr 17 - Tue, Apr 21

Delta flights from Ontario to Baton Rouge

Our best Delta deals on Ontario to Baton Rouge flight tickets
Delta
May 28
ONT10:00 pmOntario
9h 45m
1 stop
BTR9:45 amBaton Rouge Ryan
May 31
BTR1:37 pmBaton Rouge Ryan
10h 11m
1 stop
ONT9:48 pmOntario
$369
Delta
Apr 14
ONT10:15 pmOntario
9h 31m
1 stop
BTR9:46 amBaton Rouge Ryan
Apr 21
BTR4:00 pmBaton Rouge Ryan
9h 44m
2 stops
ONT11:44 pmOntario
$374
Delta
Apr 10
ONT10:25 pmOntario
9h 17m
1 stop
BTR9:42 amBaton Rouge Ryan
Apr 14
BTR4:00 pmBaton Rouge Ryan
7h 00m
1 stop
ONT9:00 pmOntario
$394

United Airlines flights from Ontario to Baton Rouge

Our best United Airlines deals on Ontario to Baton Rouge flight tickets
United Airlines
Apr 14
ONT5:10 amOntario
12h 27m
2 stops
BTR7:37 pmBaton Rouge Ryan
Apr 21
BTR5:00 amBaton Rouge Ryan
9h 20m
2 stops
ONT12:20 pmOntario
$400
United Airlines
May 29
ONT5:45 amOntario
5h 44m
1 stop
BTR1:29 pmBaton Rouge Ryan
May 30
BTR4:09 pmBaton Rouge Ryan
7h 46m
1 stop
ONT9:55 pmOntario
$459
United Airlines
Apr 29
ONT6:05 amOntario
5h 20m
1 stop
BTR1:25 pmBaton Rouge Ryan
May 5
BTR2:00 pmBaton Rouge Ryan
8h 36m
2 stops
ONT8:36 pmOntario
$464

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 March 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
Quickest round-trip

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 4/18

2:08 pm-10:46 pm

1 stop6h 38m

Baton Rouge Ryan

Sat 4/25

5:40 am-10:04 am

1 stop6h 24m

$347

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 4/11

11:59 pm-10:02 am

1 stop8h 03m

Baton Rouge Ryan

Sat 4/18

2:33 pm-6:37 pm

1 stop6h 04m

$349

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Sat 4/11

11:59 pm-10:02 am

1 stop8h 03m

Baton Rouge Ryan

Sat 4/18

10:35 am-7:34 pm

2 stops10h 59m

$354

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Thu 5/28

10:00 pm-9:45 am

1 stop9h 45m

Baton Rouge Ryan

Sun 5/31

1:36 pm-9:48 pm

1 stop10h 12m

$369

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 4/14

10:15 pm-9:46 am

1 stop9h 31m

Baton Rouge Ryan

Tue 4/21

4:00 pm-11:44 pm

2 stops9h 44m

$374

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Fri 4/10

10:25 pm-9:42 am

1 stop9h 17m

Baton Rouge Ryan

Tue 4/14

4:00 pm-9:00 pm

1 stop7h 00m

$394

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Tue 4/14

5:10 am-7:37 pm

2 stops12h 27m

Baton Rouge Ryan

Tue 4/21

5:00 am-12:20 pm

2 stops9h 20m

$400

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Wed 4/22

12:49 pm-9:56 pm

1 stop7h 07m

Baton Rouge Ryan

Tue 4/28

4:00 pm-9:00 pm

1 stop7h 00m

$413

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Thu 5/7

12:08 pm-10:00 pm

1 stop7h 52m

Baton Rouge Ryan

Mon 5/11

1:37 pm-9:48 pm

1 stop10h 11m

$422

OntarioBaton Rouge

ONT - BTR

ONTBTR

Ontario

Fri 4/17

12:49 pm-9:56 pm

1 stop7h 07m

Baton Rouge Ryan

Tue 4/21

4:00 pm-9:00 pm

1 stop7h 00m

$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 cheapest airline that flies from Ontario to Baton Rouge Ryan?

Delta, American Airlines, and United Airlines are the most popular carriers operating from Ontario to Baton Rouge Ryan

What airlines fly to Baton Rouge?

Delta, Spirit Airlines and Southwest are the top three most popular airlines that fly to Baton Rouge from Ontario according to our data. Delta is the first choice among our users, with 36% of people opting to fly with this airline when traveling to Baton Rouge. Keep in mind that there are 8 different airlines that fly to Baton Rouge on a routine basis, so you have a few additional options to choose from.

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 13m

Direct flights

None
The fastest flight from Ontario to Baton Rouge takes 5h 13m
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 13m.

  • 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
9,439 reviews
Search United Airlines flights
American AirlinesPriceFrom $333Free CancellationRating
7.1
11,472 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.

An easier way to manage your Baton Rouge trip

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