HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Key Largo

$37+ Cheap flights from Raleigh (RDU) 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 4/9. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — MIA
Mar 30 — Apr 61
Sun 3/30
Sun 4/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Raleigh 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 Raleigh-Durham to Key Largo are usually found in August or September, booked 28 days in advance, depart on a Friday or Sunday and return on a Thursday

Cheap flight deals from Raleigh to Key Largo

Keep the following information in mind while searching for Raleigh to Key Largo flight deals. Data was last updated March 25, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$62
(FlightHub)

One-way from

$37
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$240
Provider with most accurate pricing for Raleigh-Durham-Miami flight deals.
Search Deals
Provider most trusted by Cheapflights users for Raleigh-Durham-Miami flights.
Search Deals
From Raleigh-Durham to Key Largo
Search Deals
One-way flight from Raleigh-Durham to Key Largo
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($28 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Raleigh to Key Largo

Cheapest flights from Raleigh to Key Largo
Explore the most affordable flight options available from Raleigh to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 25, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 3/23. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/81:24 pmRDU - MIA
Nonstop2h 10mSpirit Airlines
Wed 4/163:40 pmMIA - RDU
Nonstop2h 11mSpirit Airlines
Deal found 3/23$57
This Kiwi.com deal was found by Cheapflights users on 3/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/195:28 pmRDU - MIA
Nonstop2h 19mMultiple Airlines
Wed 4/233:40 pmMIA - RDU
Nonstop2h 11mMultiple Airlines
Deal found 3/23$79
This Frontier deal was found by Cheapflights users on 3/23. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/195:28 pmRDU - MIA
Nonstop2h 19mFrontier
Thu 4/249:00 amMIA - RDU
Nonstop2h 20mFrontier
Deal found 3/23$97
This American Airlines deal was found by Cheapflights users on 3/24. 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.
Wed 6/117:38 pmRDU - MIA
Nonstop2h 11mAmerican Airlines
Wed 6/258:50 amMIA - RDU
Nonstop2h 17mAmerican Airlines
Deal found 3/24$117
This Southwest deal was found by Cheapflights users on 3/24. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/166:45 amRDU - MIA
1 stop5h 35mSouthwest
Wed 4/233:30 pmMIA - RDU
2 stops7h 00mSouthwest
Deal found 3/24$162
This Delta deal was found by Cheapflights users on 3/24. 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 10/27:00 amRDU - MIA
Nonstop2h 12mDelta
Mon 10/66:40 pmMIA - RDU
Nonstop2h 20mDelta
Deal found 3/24$177

Cheapflights Fare Finder

Customize your flight search to find flights from Raleigh 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 March 25, 2025.
Use the filters below to find and compare flights from Raleigh to Key Largo that are best for you.

Fly from

Raleigh

Fly to

Key Largo

Route

Depart

Return

Price

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Tue 4/8

1:24 pm-3:34 pm

Nonstop2h 10m

Miami

Wed 4/16

3:40 pm-5:51 pm

Nonstop2h 11m

$57

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 4/19

5:28 pm-7:47 pm

Nonstop2h 19m

Miami

Wed 4/23

3:40 pm-5:51 pm

Nonstop2h 11m

$78

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 4/19

5:28 pm-7:47 pm

Nonstop2h 19m

Miami

Thu 4/24

9:00 am-11:20 am

Nonstop2h 20m

$89

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 6/11

7:38 pm-9:49 pm

Nonstop2h 11m

Miami

Wed 6/25

8:50 am-11:07 am

Nonstop2h 17m

$117

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 4/23

6:30 am-11:55 am

1 stop5h 25m

Miami

Wed 4/30

7:00 am-3:50 pm

1 stop8h 50m

$157

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 4/19

6:00 am-4:34 pm

1 stop10h 34m

Miami

Wed 4/23

5:30 pm-7:47 pm

Nonstop2h 17m

$210

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 4/9

6:46 pm-8:58 pm

Nonstop2h 12m

$37

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 4/19

5:28 pm-7:47 pm

Nonstop2h 19m

$39

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Tue 4/22

7:05 am-9:16 am

Nonstop2h 11m

$69

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 6/4

6:30 am-11:55 am

1 stop5h 25m

$76

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/24

Showing 1-10 of 15 results
1
2

Best time to book a flight from Raleigh to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Raleigh 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 Raleigh to Key Largo

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

Use this chart to determine the optimal time to book a round-trip flight from Raleigh to Key Largo. Price data was last updated on March 21, 2025.

To ensure you get the cheapest price possible for a flight from Raleigh to Key Largo, you should look to book at least 28 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 Raleigh to Key Largo?

Currently, September is the cheapest month in which you can book a flight from Raleigh to Key Largo (average of $229). Flying from Raleigh 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 RDU to KE9?

Find hourly flight availability from Raleigh 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 March 25, 2025.

When flying from Raleigh 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.

What is the cheapest day to fly from Raleigh to Key Largo?

Use this chart to determine the cheapest time to fly round-trip from Raleigh to Key Largo. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Raleigh to Key Largo flight should consider departing on Wednesday at noon when fares are most often at their lowest. Tuesday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Raleigh to Key Largo

Explore weekly flight availability from Raleigh to Key Largo. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated March 25, 2025.

The most flights from RDU to KE9 are scheduled on a Monday (20 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (13 on average).

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 1.6 - 9.9 inches per month. September is typically the wettest month, when rainfall can reach 9.9 in. January is typically the driest time to visit Key Largo when rainfall is around 1.6 in.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 68.0 F).

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 March 25, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Raleigh to Key Largo by reading reviews from past customers. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,782 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
9,782 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Southwest
8.0
Very good
4,272 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,890 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,605 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
JetBlue
7.3
Good
2,924 reviews
Alaska Airlines
8.0
Very good
9,782 reviews

Entertainment

7.1

Overall

8.0

Food

7.1

Boarding

8.2

Crew

8.5

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Raleigh 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 Raleigh to Key Largo?

    Most people fly from Raleigh-Durham (RDU) if they book a flight from Raleigh to Key Largo. On average, Raleigh-Durham has 17 outbound flights to Key Largo per day from 7 airlines. Raleigh-Durham is conveniently located just 11.1 mi from Raleigh’s city center.

  • How popular is this Raleigh to Key Largo flight route?

    Flights from Raleigh-Durham to Key Largo have been viewed 101 times in the past calendar month.

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

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $37. Users have also found prices from $39 and $69 on Frontier and Delta, respectively.

  • What are the most reliable airlines from Raleigh to Key Largo?

    No one likes to see their flight delayed. When booking a flight from Raleigh to Key Largo consider choosing Republic Airways (100%), Envoy Air (96%) or Royal Air Maroc (94%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Raleigh to Key Largo?

    Looking for the cheapest flight from Raleigh to Key Largo? While on average our users pay $1,039, our data indicates the cheapest price to be $25. The most popular route (Raleigh-Durham - Miami), is priced around $50.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Raleigh 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 Raleigh to Key Largo?

    Currently, September is the cheapest month in which you can book a flight from Raleigh to Key Largo (average of $229). Flying from Raleigh 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 Raleigh to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Raleigh to Orlando flights
Charlotte to Fort Lauderdale flights
Raleigh to Miami flights
Charlotte to Orlando flights
Raleigh to Fort Lauderdale flights
Charlotte to Miami flights
Raleigh to Tampa flights
Norfolk to Miami flights
Norfolk to Orlando flights
Greensboro to Orlando flights
Charlotte to West Palm Beach flights
Greensboro to Miami flights
Norfolk to Tampa flights
Charlotte to Tampa flights
Norfolk to Fort Lauderdale flights
Charlotte to Fort Myers flights
Raleigh to Pensacola flights
Charlotte to Key West flights
Raleigh to Key West flights
Knoxville to Miami flights
Greensboro to Fort Lauderdale flights
Raleigh to West Palm Beach flights
Greensboro to Tampa flights
Charlotte to Pensacola flights
Charlotte to Panama City flights
Knoxville to Orlando Sanford Intl flights
Raleigh to Fort Myers flights
Myrtle Beach to Fort Lauderdale flights
Norfolk to Pensacola flights
Charlotte to Jacksonville flights
Myrtle Beach to Orlando flights
Charlotte to Sarasota flights
Greensboro to Pensacola flights
Asheville to Fort Lauderdale flights
Knoxville to Orlando flights
Greensboro to West Palm Beach flights
Knoxville to Fort Lauderdale flights
Wilmington to Miami flights
Asheville to Key West flights
Knoxville to Tampa flights
Myrtle Beach to Miami flights
Charlotte to Valparaiso flights
Greensboro to Fort Myers flights
Asheville to Miami flights
Norfolk to Key West flights
Greensboro to Sarasota flights
Raleigh to Panama City flights
Asheville to Orlando Sanford Intl flights
Asheville to Tampa flights
Charlotte to Melbourne flights

Top 7 airlines flying from Raleigh to Key Largo

Discover the top 7 airlines that operate flights from Raleigh 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 March 25, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$29Average$111FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$37Average$109FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$59Average$203FlexibilityNo cancel feeOn-time62%
DeltaCheapest$68Average$287FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$132Average$318FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$159Average$380FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$176Average$433FlexibilityNo 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.