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Cheap flights from Florida Keys to London from £123

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Florida Keys to London departing on 16/11. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Cheap return flights

TAP AIR PORTUGAL Logo
16:35 - 15:30MIA-LHR
17h 55m1 stop
TAP AIR PORTUGAL Logo
06:00 - 14:50LHR-MIA
13h 50m1 stop
£344TAP AIR PORTUGAL
Find Deal
Wed, 26 Nov - Wed, 10 Dec
Aer Lingus Logo
19:05 - 11:25MIA-LHR
11h 20m1 stop
Aer Lingus Logo
09:50 - 17:10LHR-MIA
12h 20m1 stop
£346Aer Lingus
Find Deal
Wed, 5 Nov - Wed, 12 Nov
Finnair Logo
17:10 - 06:50MIA-LHR
8h 40mdirect
Finnair Logo
16:15 - 16:50LHR-MIA
29h 35m1 stop
£358Finnair
Find Deal
Mon, 26 Jan - Tue, 10 Feb
Finnair Logo
22:00 - 11:30MIA-LHR
8h 30mdirect
Finnair Logo
18:10 - 16:50LHR-MIA
27h 40m1 stop
£359Finnair
Find Deal
Mon, 26 Jan - Tue, 10 Feb
Virgin Atlantic Logo
21:25 - 11:10MIA-LHR
8h 45mdirect
Virgin Atlantic Logo
06:30 - 14:50LHR-MIA
13h 20m1 stop
£361Virgin Atlantic
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Sun, 9 Nov - Tue, 25 Nov
Iberia Logo
22:15 - 12:05MIA-LHR
8h 50mdirect
Iberia Logo
11:25 - 20:45LHR-MIA
14h 20m1 stop
£362Iberia
Find Deal
Wed, 5 Nov - Wed, 12 Nov
Iberia Logo
22:15 - 12:05MIA-LHR
8h 50mdirect
Iberia Logo
11:25 - 20:45LHR-MIA
14h 20m1 stop
£363Iberia
Find Deal
Wed, 5 Nov - Wed, 12 Nov
Virgin Atlantic Logo
19:25 - 09:25MIA-LHR
9h 00mdirect
Virgin Atlantic Logo
14:00 - 20:25LHR-MIA
10h 25mdirect
£363Virgin Atlantic
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Wed, 22 Oct - Tue, 28 Oct
British Airways Logo
22:00 - 11:30MIA-LHR
8h 30mdirect
British Airways Logo
11:25 - 20:45LHR-MIA
14h 20m1 stop
£366British Airways
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Tue, 4 Nov - Tue, 11 Nov
British Airways Logo
17:36 - 09:15MIA-LHR
10h 39m1 stop
British Airways Logo
11:25 - 20:45LHR-MIA
14h 20m1 stop
£369British Airways
Find Deal
Tue, 4 Nov - Tue, 11 Nov

TAP AIR PORTUGAL flights from Florida Keys to London Heathrow Airport

Our best TAP AIR PORTUGAL deals on Florida Keys to London Heathrow Airport flight tickets
TAP AIR PORTUGAL
26 Nov
MIA16:35Miami
17h 55m
1 stop
LHR15:30London Heathrow
10 Dec
LHR06:00London Heathrow
13h 50m
1 stop
MIA14:50Miami
£344
Find similar
TAP AIR PORTUGAL
27 Nov
MIA16:35Miami
13h 50m
1 stop
LHR11:25London Heathrow
7 Dec
LHR12:25London Heathrow
14h 40m
1 stop
MIA22:05Miami
£360
Find similar
TAP AIR PORTUGAL
1 Dec
MIA16:35Miami
25h 05m
1 stop
LHR22:40London Heathrow
7 Dec
LHR06:00London Heathrow
21h 05m
1 stop
MIA22:05Miami
£370
Find similar

Delta flights from Florida Keys to London Heathrow Airport

Our best Delta deals on Florida Keys to London Heathrow Airport flight tickets
Delta
20 Oct
MIA15:10Miami
13h 50m
1 stop
LHR10:00London Heathrow
28 Oct
LHR06:30London Heathrow
13h 20m
1 stop
MIA15:50Miami
£378
Find similar
Delta
1 Oct
MIA19:25Miami
9h 00m
LHR09:25London Heathrow
10 Oct
LHR10:45London Heathrow
10h 00m
MIA15:45Miami
£381
Find similar
Delta
15 Oct
MIA22:30Miami
8h 45m
LHR12:15London Heathrow
23 Oct
LHR15:55London Heathrow
9h 40m
MIA20:35Miami
£382
Find similar

momondo Fare Finder

 
Customise your flight search to find flights from Florida Keys to London Heathrow Airport 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, momondo users made 279,928 searches. Data last updated 19 September 2025.
Use the filters below to find and compare flights from Florida Keys to London Heathrow Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 26/11

16:35-15:30

1 stop17h 55m

London Heathrow

Wed 10/12

06:00-14:50

1 stop13h 50m

£344

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 5/11

19:05-11:25

1 stop11h 20m

London Heathrow

Wed 12/11

09:50-17:10

1 stop12h 20m

£346

MiamiLondon

MIA - LHR

MIALHR

Miami

Mon 26/1

17:10-06:50

Nonstop8h 40m

London Heathrow

Tue 10/2

16:15-16:50

1 stop29h 35m

£358

MiamiLondon

MIA - LHR

MIALHR

Miami

Mon 26/1

22:00-11:30

Nonstop8h 30m

London Heathrow

Tue 10/2

18:10-16:50

1 stop27h 40m

£359

MiamiLondon

MIA - LHR

MIALHR

Miami

Sun 9/11

21:25-11:10

Nonstop8h 45m

London Heathrow

Tue 25/11

06:30-14:50

1 stop13h 20m

£361

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 5/11

22:15-12:05

Nonstop8h 50m

London Heathrow

Wed 12/11

11:25-20:45

1 stop14h 20m

£362

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 5/11

22:15-12:05

Nonstop8h 50m

London Heathrow

Wed 12/11

11:25-20:45

1 stop14h 20m

£363

MiamiLondon

MIA - LHR

MIALHR

Miami

Wed 22/10

19:25-09:25

Nonstop9h 00m

London Heathrow

Tue 28/10

14:00-20:25

Nonstop10h 25m

£363

MiamiLondon

MIA - LHR

MIALHR

Miami

Tue 4/11

22:00-11:30

Nonstop8h 30m

London Heathrow

Tue 11/11

11:25-20:45

1 stop14h 20m

£366

MiamiLondon

MIA - LHR

MIALHR

Miami

Tue 4/11

17:36-09:15

1 stop10h 39m

London Heathrow

Tue 11/11

11:25-20:45

1 stop14h 20m

£369

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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How to get the cheapest flight ticket from Florida Keys to London Heathrow Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to London Heathrow Airport?

In general, February is the cheapest month to fly from Florida Keys to London Heathrow Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around £392. The month of September is another great option to travel to London Heathrow Airport, with average flight prices from Florida Keys averaging around £459.

What is the cheapest day to depart on your flight to London Heathrow Airport?

On average, the least expensive day to fly to London Heathrow Airport from Florida Keys is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as £475. However, this price may fluctuate depending on the airline, the season, and holidays. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to London Heathrow Airport on Saturday is £647.

What is the cheapest time of day to depart on your flight to London Heathrow Airport?

According to our data, the cheapest time of day to fly to London Heathrow Airport is at midday. momondo users have found flights departing from Florida Keys to London Heathrow Airport at midday for as low as £512. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are £570 on average. Flights to London Heathrow Airport from Florida Keys in the morning are generally more expensive because this time of day is more convenient for travellers’ schedules.

How far in advance should I book a flight to London Heathrow Airport?

You are more likely to see cheaper flights to London Heathrow Airport from Florida Keys when booking weeks ahead of your departure date. In general, you can expect to find flights to London Heathrow Airport for around £527 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to London Heathrow Airport from Florida Keys for as low as £465 on momondo.

Can stopping save me money on Florida Keys to London Heathrow Airport flights?

No. A direct flight is the cheapest option for a flight between Florida Keys to London Heathrow Airport.

Cheap Florida Keys to London Heathrow Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Florida Keys to London Heathrow Airport

Fastest flight time

8h 30m

Direct flights

Every day
The fastest flight from Florida Keys to London Heathrow Airport takes 8h 30m
Direct flights go from Florida Keys to London Heathrow Airport every day.
Search flight deals

  • When did momondo last update prices for flights from Florida Keys to London Heathrow Airport?

    Prices for flights from Florida Keys to London Heathrow Airport were last updated today.

  • How many operators does momondo search for flights from Florida Keys to London Heathrow Airport?

  • How old do you have to be to fly from Florida Keys to London Heathrow Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Florida Keys to London Heathrow Airport.

  • What documentation or ID do you need to fly to London Heathrow Airport?

    The travel and health documents you'll need for your trip to London Heathrow Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Heathrow Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Florida Keys to London Heathrow Airport?

Travelling to a place near London?

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Swanage
Poole
Colchester
Worthing
Salisbury
Chelmsford

Why use momondo?

Why should I use momondo to find a flight deal from Florida Keys to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Florida Keys.

Can I find flights from Florida Keys to London with flexible booking policies on momondo?

Yes. All flights to London from Florida Keys on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Florida Keys to London?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Florida Keys to London.

I’m not ready to book a flight from Florida Keys to London right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of Florida Keys to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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