Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from the United Kingdom to Key Largo from £251

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 23/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — MIA
22 Jan — 29 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from United Kingdom to Key Largo

Enter your travel dates to find the best prices.

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 23 December 2025.

Wed 31/1217:35LHR - MIA
2 stops32h 24mBritish Airways
Fri 16/117:36MIA - LHR
1 stop13h 24mBritish Airways
Deal found 21/12£451
Sun 28/1217:00LHR - MIA
1 stop27h 11mBritish Airways
Wed 7/119:55MIA - LHR
1 stop21h 15mBritish Airways
Deal found 20/12£452
Mon 29/1210:25LHR - MIA
1 stop16h 45mUnited Airlines
Thu 8/114:32MIA - LHR
1 stop12h 53mUnited Airlines
Deal found 21/12£453
Sun 28/1210:45LHR - MIA
1 stop35h 33mMultiple Airlines
Thu 15/111:39MIA - LHR
1 stop13h 41mMultiple Airlines
Deal found 21/12£456
Wed 31/1208:40LCY - MIA
2 stops20h 51mMultiple Airlines
Wed 7/111:39MIA - LCY
2 stops15h 31mMultiple Airlines
Deal found 22/12£462
Sat 27/1211:45LHR - MIA
1 stop18h 02mMultiple Airlines
Mon 19/117:10MIA - LHR
Nonstop8h 40mMultiple Airlines
Deal found 20/12£464
Wed 31/1214:00LHR - MIA
Nonstop10h 25mMultiple Airlines
Fri 23/119:25MIA - LHR
1 stop11h 15mMultiple Airlines
Deal found 21/12£465
Tue 30/1206:05GLA - MIA
2 stops16h 13mAir France
Tue 13/116:50MIA - GLA
1 stop12h 05mAir France
Deal found 22/12£467
Wed 31/1214:00LHR - MIA
Nonstop10h 25mMultiple Airlines
Fri 16/121:25MIA - LHR
Nonstop8h 45mMultiple Airlines
Deal found 21/12£468
Sun 28/1210:25LHR - MIA
1 stop30h 45mUnited Airlines
Thu 15/114:32MIA - LHR
2 stops15h 18mUnited Airlines
Deal found 21/12£470
Mon 29/1206:35GLA - MIA
2 stops20h 40mAmerican Airlines
Tue 13/116:43MIA - GLA
2 stops15h 22mAmerican Airlines
Deal found 22/12£478
Wed 31/1208:40LCY - MIA
2 stops17h 10mBritish Airways
Tue 6/106:40MIA - LCY
2 stops30h 40mBritish Airways
Deal found 22/12£482

Find 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 23 December 2025.

Round-trip from

£412

One-way from

£251

Popular in

December

Cheapest in

September

Average price

£635
8/2-15/2
  • 8/2-15/2
  • 2 total stops
  • 55h 05m total
  • United Kingdom to Key Largo
Search Deals
23/2
  • 23/2
  • 2 total stops
  • 49h 25m total
  • United Kingdom to Key Largo
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£18 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 23 December 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

BirminghamMiami

BHX - MIA

BHXMIA

Birmingham

Thu 19/2

14:40-20:00

1 stop34h 20m

Miami

Mon 2/3

06:00-17:50

2 stops30h 50m

£447

LondonMiami

LCY - MIA

LCYMIA

London City

Wed 4/2

06:50-18:00

1 stop16h 10m

Miami

Sun 8/2

19:55-20:40

1 stop19h 45m

£448

LondonMiami

LCY - MIA

LCYMIA

London City

Fri 23/1

19:15-13:55

1 stop23h 40m

Miami

Mon 26/1

22:30-08:50

1 stop29h 20m

£448

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 19/2

11:30-20:20

1 stop13h 50m

Miami

Sat 7/3

22:00-11:45

Nonstop8h 45m

£448

GlasgowMiami

GLA - MIA

GLAMIA

Glasgow Intl

Sat 17/1

12:35-20:55

1 stop13h 20m

Miami

Wed 21/1

17:15-09:55

1 stop11h 40m

£449

GlasgowMiami

GLA - MIA

GLAMIA

Glasgow Intl

Sat 17/1

12:35-20:55

1 stop13h 20m

Miami

Wed 28/1

17:15-09:55

1 stop11h 40m

£449

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 5/3

09:45-14:40

Nonstop9h 55m

Miami

Fri 13/3

19:53-11:15

1 stop11h 22m

£449

GlasgowMiami

GLA - MIA

GLAMIA

Glasgow Intl

Thu 15/1

11:15-20:55

1 stop14h 40m

Miami

Sun 1/2

17:15-09:55

1 stop11h 40m

£449

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sun 22/2

10:00-19:30

1 stop14h 30m

Miami

Sun 8/3

22:45-16:25

1 stop13h 40m

£450

LondonMiami

LCY - MIA

LCYMIA

London City

Thu 5/2

08:40-20:44

2 stops17h 04m

Miami

Thu 12/2

16:50-08:50

1 stop11h 00m

£452

Flights are sorted by cheapest return flights first.

Deals found on 20/12

Showing 1-10 of 60 results
1
2
3
...
6

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, May is the cheapest month in which you can book a flight from United Kingdom to Key Largo (average of £229). Flying from United Kingdom to Key Largo in October is currently the most expensive (average of £359). 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 23 December 2025.

It’s typically best to fly out from United Kingdom to Key Largo in the afternoon. Doing so could potentially save you 11% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from United Kingdom to Key Largo?

Use this chart to determine the cheapest time to fly return from United Kingdom to Key Largo. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their United Kingdom to Key Largo flight should consider departing on Monday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 23 December 2025.

The most flights from GB0 to KE9 are scheduled on a Friday (30 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (20 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 23 December 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.
Finnair
7.6
Good
1,339 reviews
Check prices

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Finnair
7.6
Good
1,339 reviews
Finnair
7.6
Good
1,339 reviews
Check prices

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Virgin Atlantic
7.5
Good
677 reviews
Finnair
7.6
Good
1,339 reviews
Check prices

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
Norse Atlantic UK
7.2
Good
Finnair
7.6
Good
1,339 reviews
Check prices

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
TAP AIR PORTUGAL
7.2
Good
2,096 reviews
Finnair
7.6
Good
1,339 reviews
Check prices

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.
British Airways
6.7
Okay
7,605 reviews
Finnair
7.6
Good
1,339 reviews
Check prices

Food

6.7

Entertainment

6.9

Boarding

7.6

Overall

7.6

Crew

8.1

Comfort

7.4

Reviews

1 / 20
4.0
Okay

Anonymous,Sept 2025

WAW - HEL

My flight to Europe was cancelled and rebooked. Bags got lost by FinnAir. Flight back home from Europe was cancelled the very next day after we landed. Zero compensation for these back to back cancellations on the exact same trip. Kayak doesn’t help with flight cancellation before trips says to contact trip protection only for trip protection to say it’s up to kayak. Don’t fly FinnAir.

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 British Airways, Icelandair, and Air Europa fly from United Kingdom to Key Largo in about 13h 20m. The time it takes to get you to your destination can typically vary by up to 2h 50m. United Kingdom and Key Largo are separated by a distance of 4217 mi. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Norse Atlantic UK, with whom users have recently found tickets for as low as £148. However, be on the lookout for offers from Vueling and Scandinavian Airlines, as they are both options that can get you from United Kingdom to Key Largo for a low price.

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

    The most popular route from United Kingdom to Key Largo is London Heathrow - Miami. You may also consider London Gatwick - Miami or London City - Miami.

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

    Consider Air France (87%), Delta (87%) or Virgin Atlantic (87%) 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 £1,596 for a flight from United Kingdom to Key Largo. The cheapest flight overall is £308 while the most popular route, (London Heathrow - Miami) is currently priced at £307.

  • 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, May is the cheapest month in which you can book a flight from United Kingdom to Key Largo (average of £229). Flying from United Kingdom to Key Largo in October is currently the most expensive (average of £359). 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 United Kingdom to Key Largo

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Miami flights
Heathrow to Orlando flights
Gatwick to Orlando flights
Manchester to Orlando flights
Heathrow to Tampa flights
Gatwick to Miami flights
London City to Orlando flights
London City to Miami flights
Stansted to Miami flights
Heathrow to Fort Lauderdale flights
Luton to Miami flights
Stansted to Orlando flights
Gatwick to Fort Lauderdale flights
Gatwick to Tampa flights
London City to Tampa flights
Edinburgh to Orlando flights
Luton to Orlando flights
Manchester to Miami flights
Edinburgh to Miami flights
Heathrow to West Palm Beach flights
Glasgow Intl to Miami flights
Gatwick to West Palm Beach flights
Glasgow Intl to Orlando flights
London City to Fort Lauderdale flights
Manchester to Fort Lauderdale flights
Heathrow to Fort Myers flights
Stansted to Tampa flights
Edinburgh to Fort Lauderdale flights
Glasgow Intl to Fort Lauderdale flights
Gatwick to Fort Myers flights
Manchester to Tampa flights
Heathrow to Jacksonville flights
Birmingham to Orlando flights
Dublin to Orlando flights
Birmingham to Miami flights
Heathrow to Pensacola flights
Southend to Miami flights
London City to Fort Myers flights
Luton to Tampa flights
Heathrow to Sarasota flights
Belfast Intl to Miami flights
Newcastle upon Tyne to Miami flights
Aberdeen to Orlando flights
Birmingham to Fort Lauderdale flights
Heathrow to Melbourne flights
Southampton to Miami flights
Leeds to Orlando flights
Stansted to Fort Myers flights
Newcastle upon Tyne to Orlando flights
Gatwick to Sarasota flights

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 23 December 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£217Average£634FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Norse Atlantic UKCheapest£275Average£411FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
IcelandairCheapest£297Average£531FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
SWISSCheapest£299Average£498FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Scandinavian AirlinesCheapest£310Average£386FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
TAP AIR PORTUGALCheapest£329Average£503FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
LufthansaCheapest£342Average£599FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
A.P.G.Cheapest£342Average£546FlexibilityNo cancel feeOn-timeN/A
Search A.P.G. flights
United AirlinesCheapest£344Average£645FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Air EuropaCheapest£346Average£433FlexibilityNo 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.

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.