Find flights
When to book
FAQs

Cheap flights from Cardiff to Key Largo from £660

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/5. Fares are subject to change and may not be available on all flights or dates of travel.
CWL — MIA
26 Apr — 3 May1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Cardiff to Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from Cardiff to Key Largo
Explore the most affordable flight options available from Cardiff to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 27 March 2026.

Mon 11/509:45
CWL
-
MIA
1 stop34h 00m
KLM
Mon 18/520:10
MIA
-
CWL
2 stops15h 35m
KLM
Deal found 27/3£660
Fri 1/517:15
CWL
-
MIA
1 stop26h 30m
KLM
Mon 11/511:45
MIA
-
CWL
2 stops16h 30m
KLM
Deal found 26/3£673
Mon 11/509:45
CWL
-
MIA
2 stops18h 06m
Multiple Airlines
Mon 18/520:10
MIA
-
CWL
2 stops15h 35m
Multiple Airlines
Deal found 27/3£686
Thu 7/509:45
CWL
-
MIA
2 stops16h 42m
Air France
Thu 14/511:58
MIA
-
CWL
2 stops23h 47m
Air France
Deal found 23/3£697
Sat 9/509:45
CWL
-
MIA
2 stops18h 39m
Virgin Atlantic
Sat 16/506:00
MIA
-
CWL
2 stops22h 15m
Virgin Atlantic
Deal found 25/3£731
Sat 25/417:35
CWL
-
MIA
1 stop26h 10m
KLM
Sat 2/507:40
MIA
-
CWL
2 stops20h 35m
KLM
Deal found 27/3£740
Thu 7/509:45
CWL
-
MIA
2 stops29h 39m
Virgin Atlantic
Thu 14/516:55
MIA
-
CWL
1 stop11h 20m
Virgin Atlantic
Deal found 23/3£749

Find flight deals from Cardiff to Key Largo

Keep the following information in mind while searching for Cardiff to Key Largo flight deals. Data was last updated 27 March 2026.

Round-trip from

£660
KLM
  • KLM
  • 11/5-18/5
  • 3 total stops
  • 49h 35m total
  • Cardiff to Key Largo
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Cardiff 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 858,174 searches. Data last updated 27 March 2026.
Use the filters below to find and compare flights from Cardiff to Key Largo that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Fri 1/5

09:45-23:29

2 stops18h 44m

Miami

Mon 11/5

11:45-09:15

2 stops16h 30m

£680

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Mon 11/5

09:45-14:45

1 stop34h 00m

Miami

Mon 18/5

20:10-16:45

2 stops15h 35m

£682
Fastest return journey

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Mon 11/5

09:45-22:51

2 stops18h 06m

Miami

Mon 18/5

20:10-16:45

2 stops15h 35m

£686

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Sat 9/5

09:45-23:24

2 stops18h 39m

Miami

Sat 16/5

06:00-09:15

2 stops22h 15m

£731

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Thu 7/5

09:45-15:50

3 stops35h 05m

Miami

Thu 14/5

23:00-09:15

2 stops29h 15m

£837

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Fri 1/5

17:15-14:35

3 stops26h 20m

Miami

Mon 11/5

21:30-21:20

2 stops18h 50m

£864

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Sat 25/4

17:35-14:45

1 stop26h 10m

Miami

Sat 2/5

16:55-16:45

1 stop18h 50m

£884

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Wed 8/4

17:15-23:30

3 stops35h 15m

Miami

Sun 12/4

11:35-21:45

3 stops29h 10m

£932

CardiffMiami

CWL - MIA

CWLMIA

Cardiff Wales

Sat 25/4

17:35-14:45

1 stop26h 10m

Miami

Sat 2/5

16:55-16:45

1 stop18h 50m

£952

Flights are sorted by cheapest return flights first.

Deals found on 26/3

Sorted by cheapest first

Best time to book a flight from Cardiff to Key Largo

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

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

Currently, November is the cheapest month in which you can book a flight from Cardiff to Key Largo (average of £468). Flying from Cardiff to Key Largo in July is currently the most expensive (average of £741). 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.

Related info for your journey

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

    Cardiff Wales (CWL), located 9.1 mi from the city center, is the airport you fly out of when you book flights from Cardiff to Key Largo. 0 airlines have flights from Cardiff Wales to Key Largo on a regular basis. Booking flights from Cardiff Wales to Key Largo should not be difficult; the airport handles an average of 0 outbound flights to Key Largo per day.

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

    There are many flights that can get you from Cardiff to Key Largo in 18h 39m. Fly via KLM or Virgin Atlantic to get the fastest option. The distance between Cardiff and Key Largo is about 4292 mi. Both multi-stop and direct flights can be found to your destination and back.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Cardiff to Key Largo (average of £468). Flying from Cardiff to Key Largo in July is currently the most expensive (average of £741). 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.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Cardiff to Key Largo?

Cheapflights makes it easy to find Cardiff to Key Largo flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Cardiff to Key Largo?

Millions of users choose and trust Cheapflights to book the best flight deals from Cardiff to Key Largo for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Cardiff to Key Largo with no change fees?

Certainly. Search results for flights to Key Largo from Cardiff shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Cardiff to Key Largo become cheaper?

Yes! Start tracking prices for Cardiff to Key Largo flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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.