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£345+ Cheap flights to Key Largo

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 9/1. Fares are subject to change and may not be available on all flights or dates of travel.
— MIA
21 Dec — 28 Dec1
1 adult
1 adult, Economy, 0 bags

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Cheapest flights to Key Largo
Explore the most affordable flight options available to Key Largo. Find the lowest fares based on data from user searches, with prices last updated on 21 November 2025.

Thu 4/1212:15LHR - MIA
1 stop13h 40mIcelandair
Sun 14/1217:15MIA - LHR
1 stop12h 35mIcelandair
Deal found 20/11£446
Thu 4/1212:15LHR - MIA
1 stop13h 40mIcelandair
Sun 7/1217:15MIA - LHR
1 stop21h 15mIcelandair
Deal found 21/11£447
Wed 3/1217:25LGW - MIA
1 stop31h 05mAir Europa
Thu 4/1221:45MIA - LGW
1 stop13h 40mAir Europa
Deal found 19/11£447
Wed 3/1206:30STN - MIA
1 stop15h 40mMultiple Airlines
Wed 10/1219:05MIA - STN
1 stop17h 45mMultiple Airlines
Deal found 19/11£448
Wed 3/1220:35LHR - MIA
1 stop29h 20mIcelandair
Sun 7/1217:15MIA - LHR
1 stop12h 35mIcelandair
Deal found 19/11£448
Wed 26/1106:00LHR - MIA
1 stop13h 50mTAP AIR PORTUGAL
Fri 5/1223:35MIA - LHR
1 stop18h 05mTAP AIR PORTUGAL
Deal found 19/11£449
Wed 3/1217:25LGW - MIA
1 stop31h 05mAir Europa
Wed 10/1221:45MIA - LGW
1 stop13h 40mAir Europa
Deal found 20/11£449
Thu 25/1210:10LHR - MIA
1 stop18h 13mDelta
Mon 26/115:25MIA - LHR
1 stop11h 25mDelta
Deal found 20/11£450
Mon 29/1213:00LHR - MIA
1 stop15h 06mVirgin Atlantic
Sun 18/121:25MIA - LHR
Nonstop8h 45mVirgin Atlantic
Deal found 20/11£451
Fri 5/1205:50LTN - MIA
1 stop16h 20mMultiple Airlines
Fri 12/1219:05MIA - LTN
1 stop16h 10mMultiple Airlines
Deal found 20/11£451
Sun 7/1206:00LHR - MIA
1 stop21h 05mTAP AIR PORTUGAL
Thu 8/116:35MIA - LHR
1 stop19h 55mTAP AIR PORTUGAL
Deal found 19/11£451
Mon 1/1210:00LGW - MIA
1 stop14h 30mAir Europa
Wed 10/1221:45MIA - LGW
1 stop13h 40mAir Europa
Deal found 19/11£452

Flights to Key Largo in 2025

Find the latest flights to Key Largo in 2025, with up-to-date prices and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 21 November 2025.

Return from

£445

One-way from

£345

Popular in

December

Cheapest in

September

Average price

£465
Virgin Atlantic
  • Virgin Atlantic
  • 27/2-7/3
  • 1 total stop
  • 24h 46m total
  • London to Miami
Search Deals
Aer Lingus
  • Aer Lingus
  • 9/1
  • 1 total stop
  • 15h 10m total
  • London to Key Largo
Search Deals
Highest demand for flights based on searches. 4% potential increase in price (£23 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).
Search Deals
Average for return flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Locate flights to Key Largo that fit your budget, with regularly updated fares and availability. In the last 7 days, Cheapflights users made a total of 858,174 searches and data was last updated on 21 November 2025.
Use the filters below to find and compare flights to Key Largo that are best for you.

Fly from

London

Route

Depart

Return

Price

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 19/2

06:30-14:50

1 stop13h 20m

Miami

Thu 26/2

11:34-06:20

1 stop13h 46m

£457

LondonMiami

STN - MIA

STNMIA

London Stansted

Sat 31/1

08:50-20:45

1 stop16h 55m

Miami

Mon 9/2

22:30-20:00

1 stop16h 30m

£458

LondonMiami

STN - MIA

STNMIA

London Stansted

Fri 23/1

09:00-20:00

1 stop16h 00m

Miami

Mon 2/2

16:01-20:55

2 stops23h 54m

£459

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 15/1

14:00-19:25

Nonstop10h 25m

Miami

Mon 19/1

16:32-09:00

1 stop11h 28m

£461

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 27/2

06:30-14:50

1 stop13h 20m

Miami

Sat 7/3

10:36-11:40

1 stop20h 04m

£461

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Tue 27/1

10:00-19:30

1 stop14h 30m

Miami

Sat 14/2

21:45-16:25

1 stop13h 40m

£462

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Thu 29/1

10:00-19:30

1 stop14h 30m

Miami

Sun 15/2

21:45-16:25

1 stop13h 40m

£462

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Fri 27/2

06:30-14:50

1 stop13h 20m

Miami

Sat 7/3

21:25-11:10

Nonstop8h 45m

£462

LondonMiami

LGW - MIA

LGWMIA

London Gatwick

Sun 1/2

10:00-19:30

1 stop14h 30m

Miami

Thu 12/2

21:45-16:25

1 stop13h 40m

£462

LondonMiami

LHR - MIA

LHRMIA

London Heathrow

Thu 5/3

06:30-14:50

1 stop13h 20m

Miami

Fri 13/3

11:35-10:15

1 stop18h 40m

£464

Flights are sorted by cheapest return flights first.

Deals found on 20/11

Showing 1-10 of 60 results
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2
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6

Best time to book a flight to Key Largo

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

When is the best time to book a flight to Key Largo?

Use this chart to determine the optimal time to book a return flight from London to Key Largo. Price data was last updated on 14 November 2025.

The price you pay for your flight to Key Largo may vary depending on when you book. For the best chance of a lower fare, look to book 52 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

How long is the flight to Key Largo?

On average, a flight from London to Key Largo takes 13 hours 24 minutes. Flights to Key Largo from other popular cities in United Kingdom will vary in length. Below are a few examples of popular routes and their flight times.

When is the cheapest time to fly to Key Largo?

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

Users looking for the lowest fares to Key Largo should consider flying on Monday evenings, when prices are typically cheapest. Budget-minded travellers will want to avoid Wednesday evenings, when prices are usually at their highest.

Weekly flight availability to Key Largo

The most flights from London to Key Largo are scheduled on a Friday (29 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (15 on average).

What are the most popular airlines that fly to Key Largo?

The most popular airlines flying from London to Key Largo are Virgin Atlantic, British Airways and Finnair.

British Airways
British Airways
From £350
Virgin Atlantic
Virgin Atlantic
From £382
Finnair
Finnair
From £368
TAP AIR PORTUGAL
TAP AIR PORTUGAL
From £336

What are the cheapest airlines that fly to Key Largo?

The cheapest airlines flying from London to Key Largo are Norse Atlantic UK, SWISS and Scandinavian Airlines.

Rainfall in Key Largo by month

Plan your trip to Key Largo by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Key Largo ranges from 41.0 - 252.0 inches per month. September is typically the wettest month, when rainfall can reach 252.0 mm. January is typically the driest time to visit Key Largo when rainfall is around 41.0 mm.

Temperature in Key Largo by month

Plan your trip to Key Largo by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Key Largo, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 29.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 20.0 C).

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 21 November 2025.
Get a feel of what it's like to fly with Finnair, Virgin Atlantic, andNorse Atlantic UK to the United States by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Crew

8.1

Overall

7.6

Comfort

7.4

Food

6.7

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.
Finnair
7.6
Good
1,334 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Crew

8.1

Overall

7.6

Comfort

7.4

Food

6.7

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.
Virgin Atlantic
7.5
Good
674 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Crew

8.1

Overall

7.6

Comfort

7.4

Food

6.7

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
7.2
Good
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Crew

8.1

Overall

7.6

Comfort

7.4

Food

6.7

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.
TAP AIR PORTUGAL
7.1
Good
2,070 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Crew

8.1

Overall

7.6

Comfort

7.4

Food

6.7

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.
British Airways
6.7
Okay
7,534 reviews
Finnair
7.6
Good
1,334 reviews
Check prices

Boarding

7.6

Entertainment

6.9

Crew

8.1

Overall

7.6

Comfort

7.4

Food

6.7

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.

FAQs about flying to Key Largo

  • Can I find cheaper flights to Key Largo if I am willing to have stopovers?

    Yes, flights with stopovers are often cheaper than direct flights. Keep an eye out for flight deals to Key Largo on Cheapflights that require 1 or 2 stops for potential cost savings.

  • What is the best airline to fly to Key Largo?

    Based on reviews from Cheapflights users, Delta is rated the highest out of the airlines that fly to Key Largo.

  • How much is a return flight to Key Largo?

    A return flight to Key Largo will typically cost around £180, however they can be found for as little as £51.

  • Where does the fastest flight to Key Largo depart from?

    For those looking to save time traveling to Key Largo, London offers the quickest one-way flight (9 hours 30 minutes).

  • Does Miami have car hire?

    Yes. Those touching down at Miami can take advantage of the car hire services offered upon their arrival.

  • Are there hotels close to Miami?

    Yes. Miami has hotels nearby for those requiring accommodations. Miami International Airport Hotel is the closest property to Miami (0.0 mi away from Miami).

See more FAQs

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