Cheap flights from the United Kingdom to Key Largo from £207

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 27/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — MIA
18 Oct — 25 Oct1
1 adult
1 adult, Economy

Cheap flight deals from United Kingdom to Key Largo

Keep the following information in mind while searching for United Kingdom to Key Largo flight deals. Data was last updated 18 September 2025.

Round-trip from

£360

One-way from

£207

Popular in

December

Cheapest in

September

Average price

£399
Scandinavian Airlines
  • Scandinavian Airlines
  • 20/1-27/1
  • 2 total stops
  • 45h 15m total
  • United Kingdom to Key Largo
Norse Atlantic UK
  • Norse Atlantic UK
  • 27/9
  • Nonstop
  • 9h 20m total
  • United Kingdom to Key Largo
Highest demand for flights based on searches. 2% potential increase in price (£9 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Average for round-trip flights in September 2025

Find flight deals from United Kingdom to Key Largo

Cheapest flights from United Kingdom to Key Largo
Explore the most affordable flight options available from United Kingdom to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Tue 30/915:55LHR - MIA
Nonstop9h 40mVirgin Atlantic
Mon 6/1019:25MIA - LHR
Nonstop9h 00mVirgin Atlantic
Deal found 16/9£363
Wed 24/908:40LHR - MIA
1 stop13h 50mUnited Airlines
Tue 30/916:56MIA - LHR
1 stop13h 39mUnited Airlines
Deal found 16/9£364
Thu 13/1118:40LGW - MIA
1 stop27h 50mSWISS
Thu 27/1119:50MIA - LGW
1 stop17h 00mSWISS
Deal found 16/9£364
Wed 24/910:45LHR - MIA
Nonstop10h 00mVirgin Atlantic
Mon 6/1022:30MIA - LHR
Nonstop8h 45mVirgin Atlantic
Deal found 16/9£365
Wed 24/912:20LGW - MIA
1 stop30h 57mBritish Airways
Wed 8/1017:22MIA - LGW
1 stop12h 18mBritish Airways
Deal found 17/9£365
Wed 24/908:40LHR - MIA
1 stop13h 50mUnited Airlines
Wed 15/1019:40MIA - LHR
1 stop15h 45mUnited Airlines
Deal found 16/9£366
Wed 1/1015:55LHR - MIA
Nonstop9h 40mVirgin Atlantic
Wed 15/1014:17MIA - LHR
1 stop11h 58mVirgin Atlantic
Deal found 16/9£367
Thu 16/1007:25LGW - MIA
2 stops42h 07mMultiple Airlines
Thu 23/1016:30MIA - LGW
1 stop12h 15mMultiple Airlines
Deal found 16/9£367
Wed 24/910:45LHR - MIA
Nonstop10h 00mVirgin Atlantic
Tue 30/919:25MIA - LHR
Nonstop9h 00mVirgin Atlantic
Deal found 16/9£368
Sat 20/910:00LGW - MIA
Nonstop9h 20mMultiple Airlines
Sat 4/1007:00MIA - LGW
2 stops18h 20mMultiple Airlines
Deal found 16/9£368
Wed 1/1015:55LHR - MIA
Nonstop9h 40mVirgin Atlantic
Mon 6/1015:33MIA - LHR
1 stop12h 17mVirgin Atlantic
Deal found 17/9£369
Sat 27/910:00LGW - MIA
Nonstop9h 20mMultiple Airlines
Tue 7/1016:05MIA - LGW
2 stops33h 15mMultiple Airlines
Deal found 18/9£369

Cheapflights Fare Finder

 
Customise your flight search to find flights from United Kingdom 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 18 September 2025.
Use the filters below to find and compare flights from the United Kingdom to Key Largo that are best for you.

Fly from

United Kingdom

Fly to

Key Largo

Route

Depart

Return

Price

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sat 28/2

07:30-20:35

2 stops18h 05m

Miami

Thu 12/3

14:30-10:50

2 stops16h 20m

£366

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Wed 7/1

18:40-14:40

1 stop25h 00m

Miami

Fri 23/1

19:50-17:50

1 stop17h 00m

£366

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 28/10

09:00-18:30

1 stop13h 30m

Miami

Sun 2/11

16:50-07:30

1 stop33h 40m

£369

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 7/1

19:50-18:05

2 stops27h 15m

Miami

Fri 23/1

20:40-16:00

1 stop14h 20m

£371

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Sun 2/11

07:30-19:08

2 stops16h 38m

Miami

Sun 9/11

11:55-07:30

1 stop14h 35m

£374

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 30/9

06:50-18:51

2 stops17h 01m

Miami

Mon 6/10

12:27-08:20

1 stop14h 53m

£374

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 7/1

14:30-19:30

Nonstop10h 00m

Miami

Tue 13/1

14:53-06:45

1 stop10h 52m

£377

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 3/12

19:50-18:05

2 stops27h 15m

Miami

Mon 8/12

19:55-18:50

2 stops17h 55m

£380

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Wed 7/1

14:00-19:25

Nonstop10h 25m

Miami

Tue 13/1

17:10-07:00

Nonstop8h 50m

£380

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Tue 2/12

12:40-21:48

1 stop14h 08m

Miami

Thu 11/12

17:33-09:15

1 stop10h 42m

£388

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 results
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Best time to book a flight from United Kingdom to Key Largo

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

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

Currently, January is the cheapest month in which you can book a flight from United Kingdom to Key Largo (average of £559). Flying from United Kingdom to Key Largo in July is currently the most expensive (average of £760). 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 GB to KE9?

Find hourly flight availability from United Kingdom 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 18 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from United Kingdom to Key Largo as you normally would.

Weekly flight availability from United Kingdom to Key Largo

Explore weekly flight availability from United Kingdom 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 18 September 2025.

The most flights from GB0 to KE9 are scheduled on a Wednesday (24 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (19 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 18 September 2025.
Read through reviews of airlines operating flights from the United Kingdom to Key Largo, such as Finnair, Virgin Atlantic, andNorse Atlantic UK. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.
Norse Atlantic UK
7.1
Good

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Overall

7.6

Boarding

7.6

Crew

8.1

Comfort

7.5

Food

6.7

Entertainment

6.9

Reviews

1 / 20
10.0
Excellent

Anonymous,May 2025

FRA - DFW

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

Related info for your journey

Find useful and relevant information for your journey from United Kingdom to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How long is the flight from United Kingdom to Key Largo?

    Airlines like United Airlines, SWISS, and Scandinavian Airlines fly from United Kingdom to Key Largo in about 18h 05m. The time it takes to get you to your destination can typically vary by up to 9h 10m. United Kingdom and Key Largo are separated by a distance of 4414 mi. This flight may include one or multiple stops.

  • What are the most popular routes from United Kingdom to Key Largo?

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

    Consider Aeromexico (87%), Gulf Air (83%) or Malaysia Airlines (82%) when booking your flight. These represent the most reliable airlines when flying from United Kingdom to Key Largo.

  • What are the cheapest flights from United Kingdom to Key Largo?

    On average you can expect to pay £1,467 for a flight from United Kingdom to Key Largo. The cheapest flight overall is £386 while the most popular route, (London Heathrow - Miami) is currently priced at £309.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from United Kingdom 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 United Kingdom to Key Largo?

    Currently, January is the cheapest month in which you can book a flight from United Kingdom to Key Largo (average of £559). Flying from United Kingdom to Key Largo in July is currently the most expensive (average of £760). 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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Alternative routes for United Kingdom to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from United Kingdom to Key Largo

Discover the top 10 airlines that operate flights from United Kingdom 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 858,174 searches. Data last updated 18 September 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£213Average£646FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Norse Atlantic UKCheapest£269Average£405FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
SWISSCheapest£294Average£494FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£313Average£393FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£321Average£493FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
A.P.G.Cheapest£337Average£537FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
United AirlinesCheapest£339Average£586FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
IcelandairCheapest£339Average£529FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
LufthansaCheapest£340Average£583FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
Air EuropaCheapest£348Average£447FlexibilityNo cancel feeOn-time83%
Search Air Europa flights

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 United Kingdom to Key Largo?

When you search for this flight from United Kingdom to Key Largo, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights simply makes it quick and affordable to book flights from United Kingdom to Key Largo by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Cheapflights does show flights with no change fees to all users. To see these options for flights from United Kingdom to Key Largo, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Key Largo from United Kingdom today and book when prices fit your budget.

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