HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$169+ Cheap flights from Baton Rouge (BTR) to Key Largo, FL

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/16. Fares are subject to change and may not be available on all flights or dates of travel.
BTR — MIA
Aug 25 — Sep 11
Mon 8/25
Mon 9/1
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baton Rouge to Key Largo 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.

Cheapflights Tip: The best prices from Baton Rouge Ryan to Key Largo are usually found in August or September, booked 19 days in advance, depart on a Wednesday or Saturday and return on a Tuesday

Cheap flight deals from Baton Rouge to Key Largo

Keep the following information in mind while searching for Baton Rouge to Key Largo flight deals. Data was last updated August 20, 2025.

Round-trip from

$249
(Delta)

One-way from

$169
(Delta)

Popular in

March

Cheapest in

August

Average price

$248
From Baton Rouge Ryan to Key Largo
Search Deals
One-way flight from Baton Rouge Ryan to Key Largo
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($48 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Baton Rouge to Key Largo

Cheapest flights from Baton Rouge to Key Largo
Explore the most affordable flight options available from Baton Rouge to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 20, 2025.

This Delta deal was found by Cheapflights users on 8/19. 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 9/1610:27 amBTR - MIA
1 stop7h 06mDelta
Tue 9/234:25 pmMIA - BTR
1 stop6h 47mDelta
Deal found 8/19$249
This Delta deal was found by Cheapflights users on 8/20. 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 9/46:15 pmBTR - MIA
1 stop5h 09mDelta
Sun 9/76:00 amMIA - BTR
1 stop4h 35mDelta
Deal found 8/20$259
This American Airlines deal was found by Cheapflights users on 8/20. 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 8/3012:19 pmBTR - MIA
1 stop8h 19mAmerican Airlines
Mon 9/154:01 pmMIA - BTR
1 stop7h 00mAmerican Airlines
Deal found 8/20$279
This American Airlines deal was found by Cheapflights users on 8/20. 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 8/306:42 pmBTR - MIA
1 stop5h 17mAmerican Airlines
Fri 9/56:24 pmMIA - BTR
1 stop5h 47mAmerican Airlines
Deal found 8/20$284
This American Airlines deal was found by Cheapflights users on 8/20. 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.
Thu 10/2311:10 amBTR - MIA
1 stop7h 13mAmerican Airlines
Mon 10/276:20 amMIA - BTR
1 stop5h 27mAmerican Airlines
Deal found 8/20$314
This United Airlines deal was found by Cheapflights users on 8/20. 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.
Wed 9/102:05 pmBTR - MIA
1 stop7h 10mUnited Airlines
Sat 9/134:53 pmMIA - BTR
1 stop7h 31mUnited Airlines
Deal found 8/20$319
This Delta deal was found by Cheapflights users on 8/19. 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 8/197:00 pmBTR - MIA
1 stop4h 24mDelta
Wed 8/276:00 amMIA - BTR
1 stop4h 35mDelta
Deal found 8/19$324
This Delta deal was found by Cheapflights users on 8/18. 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.
Mon 9/296:50 pmBTR - MIA
1 stop4h 33mDelta
Thu 10/26:00 amMIA - BTR
1 stop4h 07mDelta
Deal found 8/18$337
This Delta deal was found by Cheapflights users on 8/19. 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.
Fri 8/226:49 pmBTR - MIA
1 stop4h 35mDelta
Mon 8/256:00 amMIA - BTR
1 stop4h 35mDelta
Deal found 8/19$339
This Delta deal was found by Cheapflights users on 8/20. 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 8/304:38 pmBTR - MIA
1 stop6h 46mDelta
Fri 9/56:40 pmMIA - BTR
2 stops15h 55mDelta
Deal found 8/20$353
This Delta deal was found by Cheapflights users on 8/20. 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 11/297:00 pmBTR - MIA
1 stop4h 52mDelta
Sun 12/76:00 amMIA - BTR
1 stop4h 36mDelta
Deal found 8/20$359

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baton Rouge to Key Largo 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 2,558,603 searches. Data last updated August 20, 2025.
Use the filters below to find and compare flights from Baton Rouge to Key Largo that are best for you.

Fly from

Baton Rouge

Fly to

Key Largo

Route

Depart

Return

Price

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Sun 10/5

6:00 am-1:27 pm

1 stop6h 27m

Miami

Mon 11/10

7:03 am-1:50 pm

1 stop7h 47m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Tue 9/16

5:00 am-11:02 am

1 stop5h 02m

Miami

Tue 9/23

8:40 am-1:19 pm

1 stop5h 39m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Tue 9/16

10:27 am-6:33 pm

1 stop7h 06m

Miami

Tue 9/23

4:25 pm-10:12 pm

1 stop6h 47m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Wed 11/5

4:25 pm-12:42 am

1 stop7h 17m

Miami

Mon 11/10

7:03 am-1:50 pm

1 stop7h 47m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Thu 11/13

2:15 pm-11:35 pm

1 stop8h 20m

Miami

Mon 11/17

5:18 am-9:53 am

1 stop5h 35m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Fri 9/19

5:41 pm-11:56 pm

1 stop5h 15m

Miami

Mon 9/22

4:01 pm-10:01 pm

1 stop7h 00m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Mon 11/10

6:34 pm-12:42 am

1 stop5h 08m

Miami

Mon 11/17

5:18 am-9:53 am

1 stop5h 35m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Tue 9/16

5:38 pm-11:56 pm

1 stop5h 18m

Miami

Tue 9/23

11:10 am-4:01 pm

1 stop5h 51m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Wed 9/24

12:15 pm-9:44 pm

1 stop8h 29m

Miami

Sun 9/28

5:18 am-9:38 am

1 stop5h 20m

$249

Baton RougeMiami

BTR - MIA

BTRMIA

Baton Rouge Ryan

Thu 9/4

6:15 pm-12:24 am

1 stop5h 09m

Miami

Sun 9/7

6:00 am-9:35 am

1 stop4h 35m

$259

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/19

Showing 1-10 of 21 results
1
2
3

Best time to book a flight from Baton Rouge to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Baton Rouge with our price prediction graph.
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 Key Largo

How far ahead should I book a flight from Baton Rouge to Key Largo?

Use this chart to determine the optimal time to book a round-trip flight from Baton Rouge to Key Largo. Price data was last updated on August 8, 2025.

To ensure you get the cheapest price possible for a flight from Baton Rouge to Key Largo, you should look to book at least 19 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Baton Rouge to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Baton Rouge to Key Largo (average of $232). Flying from Baton Rouge to Key Largo in March is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BTR to KE9?

Find hourly flight availability from Baton Rouge to Key Largo. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 20, 2025.

When flying from Baton Rouge to Key Largo, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to Key Largo. 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 Key Largo. Reviews last updated August 20, 2025.
Read reviews from past customers who have flown Delta, United Airlines, and American Airlines from Baton Rouge to Key Largo. 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.
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2023

MSY - ATL

No wifi on the plane even though there was a signal.
Delta
8.0
Very good
7,982 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2023

MSY - ATL

No wifi on the plane even though there was a signal.
United Airlines
7.4
Good
8,928 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2023

MSY - ATL

No wifi on the plane even though there was a signal.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,982 reviews

Overall

8.0

Crew

8.5

Food

7.3

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2023

MSY - ATL

No wifi on the plane even though there was a signal.

Related info for your journey

Find useful and relevant information for your journey from Baton Rouge to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Baton Rouge to Key Largo?

    Baton Rouge Ryan (BTR) is the airport you will fly out of if you book a flight from Baton Rouge to Key Largo. You should not have trouble finding flights to Key Largo from Ryan; the airport handles an average of 0 outbound flights to Key Largo per day. You should also have plenty of airline options to choose from since 3 airlines have flights from the Baton Rouge airport to Key Largo. It is only a 5.8 mi journey to Ryan (BTR) from Baton Rouge’s city center.

  • How long is the flight from Baton Rouge to Key Largo?

    There are many flights that can get you from Baton Rouge to Key Largo in 5h 02m. Fly via American Airlines, United Airlines, or Delta to get the fastest option. The distance from Baton Rouge to Key Largo is about 737 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from Baton Rouge to Key Largo one-way?

    One-way options have recently been found by users for as low as $169 on Delta. Other airlines that offer cheap prices include American Airlines from $185 and United Airlines from $204 one-way.

  • Can I find deals for flights from Baton Rouge to Key Largo that include hotel bookings?

    Yes. In addition to deals on Baton Rouge to Key Largo flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baton Rouge to Key Largo?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baton Rouge to Key Largo.

  • Can I find deals for business class flights from Baton Rouge to Key Largo?

    Yes. Cheapflights offers flight deals from Baton Rouge to Key Largo by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baton Rouge to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Baton Rouge to Key Largo (average of $232). Flying from Baton Rouge to Key Largo in March is currently the most expensive (average of $289). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baton Rouge to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
New Orleans to Orlando flights
New Orleans to Fort Lauderdale flights
New Orleans to Miami flights
New Orleans to Tampa flights
New Orleans to Jacksonville flights
Shreveport to Orlando flights
New Orleans to West Palm Beach flights
Lafayette to Orlando flights
Baton Rouge to Orlando flights
New Orleans to Key West flights
Shreveport to Miami flights
Baton Rouge to Miami flights
Lafayette to Miami flights
Monroe to Orlando flights
Monroe to Miami flights
Baton Rouge to Fort Lauderdale flights
New Orleans to Sarasota flights
Lake Charles to Miami flights
New Orleans to Fort Myers flights
Lafayette to Tampa flights
Shreveport to Jacksonville flights
Baton Rouge to Jacksonville flights
Lafayette to Fort Lauderdale flights
Baton Rouge to West Palm Beach flights
Shreveport to Pensacola flights
Lafayette to Key West flights
Alexandria to Miami flights
Shreveport to Fort Myers flights
Shreveport to Valparaiso flights
Baton Rouge to Tampa flights
Monroe to Tampa flights
Baton Rouge to Pensacola flights
Shreveport to Fort Lauderdale flights
New Orleans to Panama City flights
Shreveport to Tampa flights
Monroe to Panama City flights
Lafayette to Pensacola flights
Lake Charles to Orlando flights
New Orleans to Pensacola flights
Baton Rouge to Key West flights
Alexandria to Orlando flights
Shreveport to Key West flights
New Orleans to Daytona Beach flights
Baton Rouge to Panama City flights
Shreveport to Panama City flights
New Orleans to Melbourne flights
Alexandria to Key West flights
Lafayette to Jacksonville flights
Shreveport to Daytona Beach flights
Lafayette to Valparaiso flights

Top 3 airlines flying from Baton Rouge to Key Largo

Discover the top 3 airlines that operate flights from Baton Rouge to Key Largo. 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 2,558,603 searches. Data last updated August 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$248Average$388FlexibilityNo cancel feeOn-time71%
DeltaCheapest$248Average$344FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$248Average$373FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.