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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 1/23. Fares are subject to change and may not be available on all flights or dates of travel.
RDU — MIA
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
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 68 days in advance, depart on a Friday or Sunday and return on a Wednesday

Cheap 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 December 18, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/306:14 pmRDU - MIA
Nonstop2h 15mMultiple Airlines
Tue 1/68:00 amMIA - RDU
1 stop16h 12mMultiple Airlines
Deal found 12/16$107
This Frontier deal was found by Cheapflights users on 12/16. 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 12/306:00 amRDU - MIA
1 stop4h 58mFrontier
Thu 1/812:39 pmMIA - RDU
Nonstop2h 11mFrontier
Deal found 12/16$110
This Frontier deal was found by Cheapflights users on 12/16. 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 12/316:00 amRDU - MIA
1 stop4h 58mFrontier
Thu 1/812:39 pmMIA - RDU
Nonstop2h 11mFrontier
Deal found 12/16$111
This Frontier deal was found by Cheapflights users on 12/16. 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 12/306:14 pmRDU - MIA
Nonstop2h 15mFrontier
Wed 12/315:30 amMIA - RDU
1 stop6h 30mFrontier
Deal found 12/16$121
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 12/306:14 pmRDU - MIA
Nonstop2h 15mMultiple Airlines
Wed 1/710:40 amMIA - RDU
1 stop7h 43mMultiple Airlines
Deal found 12/16$145
This Kiwi.com deal was found by Cheapflights users on 12/16. 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.
Wed 12/316:00 amRDU - MIA
1 stop4h 58mMultiple Airlines
Tue 1/68:00 amMIA - RDU
1 stop16h 12mMultiple Airlines
Deal found 12/16$152
This Frontier deal was found by Cheapflights users on 12/16. 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 12/291:15 pmRDU - MIA
1 stop7h 54mFrontier
Thu 1/812:39 pmMIA - RDU
Nonstop2h 11mFrontier
Deal found 12/16$161
This American Airlines deal was found by Cheapflights users on 12/17. 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.
Tue 12/307:57 pmRDU - MIA
Nonstop2h 18mAmerican Airlines
Wed 12/318:21 pmMIA - RDU
Nonstop2h 24mAmerican Airlines
Deal found 12/17$162

Find 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 December 18, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$77
(Frontier)

One-way from

$47
(Super.com)

Popular in

November

Cheapest in

January

Average price

$244
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. 11% potential increase in price ($27 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($5 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 18, 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

Sun 1/25

8:08 am-10:26 am

Nonstop2h 18m

Miami

Sat 1/31

6:50 pm-9:05 pm

Nonstop2h 15m

$117

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sun 1/25

8:08 am-10:26 am

Nonstop2h 18m

Miami

Fri 1/30

6:23 pm-8:34 pm

Nonstop2h 11m

$117

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Mon 1/26

8:08 am-10:26 am

Nonstop2h 18m

Miami

Sat 1/31

6:50 pm-9:05 pm

Nonstop2h 15m

$117

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Mon 2/23

8:08 am-10:26 am

Nonstop2h 18m

Miami

Fri 2/27

5:44 pm-8:00 pm

Nonstop2h 16m

$127

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 2/4

3:04 pm-9:41 pm

1 stop6h 37m

Miami

Wed 2/11

6:23 pm-8:34 pm

Nonstop2h 11m

$127

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sat 1/24

6:06 pm-12:51 am

1 stop6h 45m

Miami

Sat 1/31

6:50 pm-9:05 pm

Nonstop2h 15m

$127

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 2/4

3:04 pm-9:41 pm

1 stop6h 37m

Miami

Tue 2/10

6:23 pm-8:34 pm

Nonstop2h 11m

$127

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Wed 2/18

8:08 am-10:26 am

Nonstop2h 18m

Miami

Wed 2/25

5:44 pm-8:00 pm

Nonstop2h 16m

$137

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sun 2/1

5:15 am-9:24 am

1 stop4h 09m

Miami

Sat 2/7

7:15 am-1:50 pm

1 stop6h 35m

$137

RaleighMiami

RDU - MIA

RDUMIA

Raleigh-Durham

Sun 4/12

4:41 pm-6:56 pm

Nonstop2h 15m

$55

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 19 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 December 12, 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 $38). Flying from Raleigh to Key Largo in December is currently the most expensive (average of $63). 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 December 18, 2025.

It’s typically best to fly out from Raleigh to Key Largo in the afternoon. Doing so could potentially save you 22% 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 December 13, 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.

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 December 18, 2025.
See what other customers who have flown with Southwest, Delta, and American Airlines 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.
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Southwest
7.9
Good
4,250 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Delta
7.9
Good
8,005 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
American Airlines
7.2
Good
11,054 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Spirit Airlines
6.3
Okay
8,190 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am
Frontier
5.8
Fair
3,081 reviews
Southwest
7.9
Good
4,250 reviews

Food

7.0

Entertainment

7.5

Comfort

8.0

Crew

8.6

Overall

7.9

Boarding

8.1

Reviews

1 / 20
2.0
Mediocre

Thomas,Dec 2025

SEA - DEN

Plane two hours late in leaving 1:00 pm west coat time got home next day at 2:45am most car rental places are closed and don’t open till 5am

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 6 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 110 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 18m. The distance between Raleigh and Key Largo is about 702 mi. Generally, flights for this route are nonstop.

  • 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 $23. Users have also found prices from $25 and $54 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 Envoy Air (100%), Air France (100%) or LATAM Airlines (91%) 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 $640, our data indicates the cheapest price to be $40. The most popular route (Raleigh-Durham - Miami), is priced around $59.

  • 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 $38). Flying from Raleigh to Key Largo in December is currently the most expensive (average of $63). 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$38Average$149FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$42Average$124FlexibilityNo cancel feeOn-time65%
JetBlueCheapest$53Average$179FlexibilityNo cancel feeOn-time62%
Breeze AirwaysCheapest$61Average$214FlexibilityNo cancel feeOn-timeN/A
DeltaCheapest$70Average$259FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$126Average$186FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$137Average$300FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$147Average$318FlexibilityNo cancel feeOn-time63%
United AirlinesCheapest$216Average$646FlexibilityNo cancel feeOn-time69%

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