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Key Largo

$47+ 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 12/1. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — MIA
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheapflights Tip: The best prices from Raleigh-Durham to Key Largo are usually found in January or September, booked 28 days in advance, depart on a Friday or Sunday and return on a Thursday

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 November 2, 2025.

This CheapOair deal was found by Cheapflights users on 11/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/209:11 amRDU - MIA
1 stop11h 38mFrontier
Mon 11/246:19 pmMIA - RDU
Nonstop2h 13mFrontier
Deal found 11/2$94
This Frontier deal was found by Cheapflights users on 11/2. 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.
Wed 11/269:27 pmRDU - MIA
Nonstop2h 12mFrontier
Thu 11/279:05 amMIA - RDU
Nonstop2h 13mFrontier
Deal found 11/2$97
This Priceline deal was found by Cheapflights users on 11/2. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/53:21 pmRDU - MIA
Nonstop2h 15mFrontier
Sun 12/75:30 amMIA - RDU
1 stop6h 38mFrontier
Deal found 11/2$98
This Frontier deal was found by Cheapflights users on 11/2. 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.
Tue 11/259:45 pmRDU - MIA
Nonstop2h 12mFrontier
Wed 12/33:13 pmMIA - RDU
1 stop8h 59mFrontier
Deal found 11/2$99
This Frontier deal was found by Cheapflights users on 11/2. 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.
Sun 11/239:59 pmRDU - MIA
Nonstop2h 12mFrontier
Wed 11/266:19 pmMIA - RDU
Nonstop2h 13mFrontier
Deal found 11/2$100
This CheapOair deal was found by Cheapflights users on 11/1. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:21 pmRDU - MIA
Nonstop2h 15mFrontier
Mon 12/85:30 amMIA - RDU
1 stop6h 30mFrontier
Deal found 11/1$102
This Frontier deal was found by Cheapflights users on 11/1. 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.
Sun 11/163:55 pmRDU - MIA
Nonstop2h 12mFrontier
Thu 11/2011:55 amMIA - RDU
1 stop6h 24mFrontier
Deal found 11/1$104
This CheapOair deal was found by Cheapflights users on 11/2. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:21 pmRDU - MIA
Nonstop2h 15mFrontier
Sat 12/136:53 pmMIA - RDU
1 stop5h 19mFrontier
Deal found 11/2$106
This Frontier deal was found by Cheapflights users on 11/2. 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.
Mon 12/19:37 pmRDU - MIA
Nonstop2h 12mFrontier
Fri 12/55:30 amMIA - RDU
1 stop4h 46mFrontier
Deal found 11/2$108
This Frontier deal was found by Cheapflights users on 11/2. 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 12/65:45 amRDU - MIA
1 stop9h 54mFrontier
Sat 12/136:53 pmMIA - RDU
1 stop5h 19mFrontier
Deal found 11/2$110
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Tue 12/28:39 pmRDU - MIA
1 stop12h 43mMultiple Airlines
Fri 12/1212:10 pmMIA - RDU
Nonstop2h 11mMultiple Airlines
Deal found 11/2$111

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 November 2, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$94
(Frontier)

One-way from

$47
(Kiwi.com)

Popular in

December

Cheapest in

January

Average price

$242
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. 7% potential increase in price ($16 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($4 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 November 2, 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

Fri 12/5

8:31 am-6:47 pm

1 stop10h 16m

Miami

Sat 12/13

6:53 pm-12:12 am

1 stop5h 19m

$124

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Thu 12/11

3:21 pm-5:36 pm

Nonstop2h 15m

Miami

Mon 12/15

5:30 am-12:00 pm

1 stop6h 30m

$124

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Fri 12/5

1:28 pm-10:42 pm

1 stop9h 14m

Miami

Fri 12/12

7:09 pm-12:12 am

1 stop5h 03m

$138

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 12/10

8:05 am-10:19 am

Nonstop2h 14m

Miami

Wed 12/10

6:12 pm-8:25 pm

Nonstop2h 13m

$142

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 11/19

8:05 am-10:16 am

Nonstop2h 11m

Miami

Tue 12/2

6:12 pm-8:25 pm

Nonstop2h 13m

$147

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Tue 12/2

1:50 pm-8:25 pm

1 stop6h 35m

Miami

Tue 12/9

1:05 pm-8:55 pm

1 stop7h 50m

$151

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 12/10

1:05 pm-9:50 pm

2 stops8h 45m

Miami

Thu 12/18

6:55 am-10:40 am

1 stop3h 45m

$156

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 11/22

12:15 pm-11:15 pm

2 stops11h 00m

Miami

Tue 11/25

6:37 pm-8:50 pm

Nonstop2h 13m

$162

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Mon 11/24

2:12 pm-8:46 pm

1 stop6h 34m

Miami

Tue 12/2

7:30 pm-12:18 am

1 stop4h 48m

$162

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 1/10

8:30 pm-12:51 am

1 stop4h 21m

Miami

Sat 1/17

6:50 pm-9:05 pm

Nonstop2h 15m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

Showing 1-10 of 20 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 October 31, 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, January is the cheapest month in which you can book a flight from Raleigh to Key Largo (average of $33). Flying from Raleigh to Key Largo in August is currently the most expensive (average of $61). 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 November 2, 2025.

It’s typically best to fly out from Raleigh to Key Largo in the afternoon. Doing so could potentially save you 20% on the flight price compared to flying in the evening, which is usually more expensive.

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 November 2, 2025.

Travelers seeking maximum savings on their Raleigh to Key Largo flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Wednesday mornings 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 November 2, 2025.

The most flights from RDU to KE9 are scheduled on a Sunday (21 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (9 on average).

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 November 2, 2025.
See what other customers who have flown with Delta, American Airlines, and JetBlue from Raleigh to Key Largo have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Brian,Sep 2023

GSO - LGA

Entire process from checking bags to flight to landing to luggage retrieval was very smooth.
Delta
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Brian,Sep 2023

GSO - LGA

Entire process from checking bags to flight to landing to luggage retrieval was very smooth.
American Airlines
7.2
Good
11,034 reviews
Delta
7.9
Good
8,001 reviews

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Brian,Sep 2023

GSO - LGA

Entire process from checking bags to flight to landing to luggage retrieval was very smooth.
JetBlue
7.2
Good
2,907 reviews
Delta
7.9
Good
8,001 reviews

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Brian,Sep 2023

GSO - LGA

Entire process from checking bags to flight to landing to luggage retrieval was very smooth.
Spirit Airlines
6.3
Okay
8,120 reviews
Delta
7.9
Good
8,001 reviews

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Brian,Sep 2023

GSO - LGA

Entire process from checking bags to flight to landing to luggage retrieval was very smooth.
Frontier
5.8
Fair
3,118 reviews
Delta
7.9
Good
8,001 reviews

Food

7.3

Overall

7.9

Entertainment

7.9

Boarding

8.2

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Brian,Sep 2023

GSO - LGA

Entire process from checking bags to flight to landing to luggage retrieval was very smooth.

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 13 outbound flights to Key Largo per day from 9 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 98 times in the past calendar month.

  • How long is the flight from Raleigh to Key Largo?

    Departing from Raleigh to Key Largo will take you 2h 14m. The distance between Raleigh and Key Largo is about 702 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 EL AL (100%), Delta (92%) or Virgin Atlantic (92%) 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 $651, our data indicates the cheapest price to be $43. The most popular route (Raleigh-Durham - Miami), is priced around $69.

  • 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, January is the cheapest month in which you can book a flight from Raleigh to Key Largo (average of $33). Flying from Raleigh to Key Largo in August is currently the most expensive (average of $61). 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

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Top 9 airlines flying from Raleigh to Key Largo

Discover the top 9 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$37Average$149FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$42Average$126FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$53Average$177FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$58Average$201FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$72Average$263FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$126Average$186FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$139Average$306FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$148Average$329FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$216Average$625FlexibilityNo cancel feeOn-time69%

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