ONT - BTR

$199 Find Cheap Flights from Ontario to Baton Rouge

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Ontario to Baton Rouge departing on 3/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Baton Rouge

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Baton Rouge, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Ontario to Baton Rouge, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$309
Delta
Thu 3/5Tue 3/10
ONT - BTR • 1 stop
Cheapest one-way
$199
Delta
Mon 3/2
ONT - BTR • 1 stop
Top airlines
Delta
Cheapest • from $309 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
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We hope you love your trip to Baton Rouge!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Ontario to Baton Rouge (ONT-BTR)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Baton Rouge that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Baton Rouge

Thu, Mar 5 - Tue, Mar 10
Delta Logo
1:15 pm - 10:01 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
1:36 pm - 9:00 pm
BTR
-
ONT
9h 24m
1 stop
$309Delta
Mon, Mar 9 - Mon, Mar 16
Delta Logo
5:09 pm - 9:45 am
ONT
-
BTR
14h 36m
2 stops
Delta Logo
1:36 pm - 9:00 pm
BTR
-
ONT
9h 24m
1 stop
$314Delta
Mon, Mar 9 - Mon, Mar 16
Delta Logo
5:09 pm - 9:45 am
ONT
-
BTR
14h 36m
2 stops
Delta Logo
1:36 pm - 11:51 pm
BTR
-
ONT
12h 15m
2 stops
$344Delta
Wed, Mar 4 - Sat, Mar 7
Delta Logo
1:15 pm - 10:01 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
1:40 pm - 9:05 pm
BTR
-
ONT
9h 25m
1 stop
$349Delta
Tue, Feb 17 - Sat, Feb 21
American Airlines Logo
11:58 pm - 9:54 am
ONT
-
BTR
7h 56m
1 stop
American Airlines Logo
4:27 pm - 10:49 pm
BTR
-
ONT
8h 22m
1 stop
$359American Airlines
Fri, Mar 6 - Thu, Mar 12
Delta Logo
1:15 pm - 10:01 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
1:36 pm - 9:00 pm
BTR
-
ONT
9h 24m
1 stop
$364Delta
Wed, Apr 29 - Mon, May 4
United Airlines Logo
11:05 am - 10:45 pm
ONT
-
BTR
9h 40m
2 stops
United Airlines Logo
4:06 pm - 9:58 pm
BTR
-
ONT
7h 52m
1 stop
$376United Airlines
Fri, May 8 - Tue, May 12
Delta Logo
11:04 pm - 9:35 am
ONT
-
BTR
8h 31m
1 stop
Delta Logo
3:48 pm - 9:54 pm
BTR
-
ONT
8h 06m
1 stop
$379Delta
Thu, Mar 5 - Tue, Mar 10
Delta Logo
1:15 pm - 10:01 pm
ONT
-
BTR
6h 46m
1 stop
Delta Logo
6:07 am - 11:47 am
BTR
-
ONT
7h 40m
1 stop
$393Delta
Sat, Apr 25 - Mon, Apr 27
United Airlines Logo
6:05 am - 1:25 pm
ONT
-
BTR
5h 20m
1 stop
United Airlines Logo
6:08 pm - 9:50 pm
BTR
-
ONT
5h 42m
1 stop
$399United Airlines
Booking Insights

KAYAK's insights & trends for Ontario to Baton Rouge flights

Get data-powered insights and trends into flights from Ontario to Baton Rouge to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Ontario to Baton Rouge?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Ontario to Baton Rouge were found on Delta ($309) and American Airlines ($359).

Good to know

Low seasonAugust
Cheapest flight$199
Best time to beat the crowds with an average 28% drop in price.
Most popular time to fly and prices are also 9% lower on average.
Flight from Ontario to Baton Rouge

When to book flights from Ontario to Baton Rouge

Are your dates flexible? Find out the best times to travel from Ontario to Baton Rouge based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Ontario to Baton Rouge

  • What is the cheapest flight from Ontario to Baton Rouge?

    In the last 3 days, the lowest price for a flight from Ontario to Baton Rouge was $199 for a one-way ticket and $309 for a round-trip.

  • Do I need a passport to fly between Ontario and Baton Rouge?

    No, a passport isn't needed to fly from Ontario to Baton Rouge. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Ontario to Baton Rouge?

    Ontario airport is called Ontario and the only airport in Baton Rouge is Baton Rouge Ryan.

  • Which aircraft models fly most regularly from Ontario to Baton Rouge?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Ontario to Baton Rouge?

    Star Alliance, and oneworld are the airline alliances operating flights between Ontario and Baton Rouge, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Ontario to Baton Rouge, United Airlines or American Airlines?

    The two airlines most popular with KAYAK users for flights from Ontario to Baton Rouge are United Airlines and American Airlines. With an average price for the route of $480 and an overall rating of 7.4, United Airlines is the most popular choice. American Airlines is also a great choice for the route, with an average price of $455 and an overall rating of 7.2.

  • How does KAYAK find such low prices on flights from Ontario to Baton Rouge?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Baton Rouge.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Baton Rouge?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Baton Rouge from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Baton Rouge?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Baton Rouge with an airline and back to Ontario with another airline. Booking your flights between Ontario and BTR can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Baton Rouge?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Baton Rouge from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from Ontario to Baton Rouge

 
See real verified KAYAK customer reviews for airlines flying from Ontario to Baton Rouge. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Ontario to Baton Rouge? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.4
United AirlinesOverall score based on 9240 reviews
7.3Comfort
6.6Food
7.1Entertainment
7.7Boarding
8.1Crew
Airline reviews

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

4.0 OkayStephen, Jan 2026
SMF - ORD
Read more United Airlines reviews

It was a pretty standard flight... until the almost hour and a half spent on the taxi way. I get that the weather has been poor but the delay had nothing to do with the weather and more to do with a plane with several issues tying up the gate. I get that that happens from time to time but this has been EVERY flight I've been on for the past 5 years and I fly 3 to 5 times a year. This isn't just United... it's American, it's Delta. It's an issue with the entire industry. I work for UPS and packages on a cargo plane get better service than people do these days. Anymore I HATE flying.

The flight crew where really good. Better then the crew from BNE to SFO

left on time, reasonable boarding process arrived early luggage came out quickly

I’m so sorry, I can’t remember her name, I believe it was Dimpti. She was stellar, also a mature Asian flight attendant, lots of flowers in her hair, just as amazing! But literally the crew was AWESOME . Only downside is there weren’t any charging outlets. Maybe I needed to ask a flight attendant , but it would’ve been nice to have one easily accessible.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

Pushed back only to get deplaned due to a tire damaged by ground crew. They did at least go pretty fast. The bathrooms should be banned under the Geneva convention. No room to even sit straight on the toilet. The under-seat entertainment units block what little leg room there is.

United airlines has the best customer experience from booking to arrival. I always fly United airlines. The mileage program is excellent

Older aircraft, no meal, only food was for purchase. Not impressed United.

Not pleasant trip cross country when the entertainment and WiFi system not working. No entertainment for entirety of route. Staff was rather nonchalant in that they dismissed the problem due to age of plane. It would have been nice to know this up front so I could have come prepared to read or download movies before boarding Coincidentally or not, there was a similar issue with the entertainment system on my previous flight I took on my fist leg of the trip. There are no seat TVs, so you must rely on the app when it works. United can do better. Also, what use it it to pay for boarding group 2 when half of the passengers are in the same line as you?

Premium Plus is a really good idea for longer flights

We flew in first class. The crew did not offer drinks before the flight took off, but they treated us well during the flight. The food was excellent. There was actually too much food served, but it was nice to have all the options.

For a 5 1/2 hour flite i considered the "business class" to be subpar. The seats were just ok, no amenities, really nothing more than a long domestic flight. Frankly disappointed.

It would be nice to have some low carb options in the snacks.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The flight was on time and arrived early. The crew were friendly and helpful.

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

The flight was delayed multiple times, again no fault of American but again the extra cost, for everything makes it feel like a cheap airline! Especially when flights are outrageously expensive already

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Everything you need to know for your flight from Ontario to Baton Rouge

Information on your arrival and departure airports