£346 Find Cheap Flights from Florida Keys to London Heathrow Airport – Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to London departing on 17/8. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Cheap Flights from Florida Keys to London

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights from Florida Keys to London that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent return flight deals from Florida Keys to London

Sat, 7 Nov - Wed, 11 Nov
British Airways Logo
20:00 - 06:50
EYW
-
LHR
29h 50m
1 stop
British Airways Logo
06:15 - 19:29
LHR
-
EYW
18h 14m
2 stops
£645British Airways
Sat, 7 Nov - Wed, 11 Nov
British Airways Logo
20:00 - 06:50
EYW
-
LHR
29h 50m
1 stop
British Airways Logo
09:45 - 19:29
LHR
-
EYW
14h 44m
1 stop
£663British Airways
Tue, 18 Aug - Tue, 1 Sep
American Airlines Logo
13:50 - 09:05
EYW
-
LHR
14h 15m
1 stop
American Airlines Logo
06:15 - 18:31
LHR
-
EYW
17h 16m
2 stops
£704American Airlines
Tue, 18 Aug - Tue, 1 Sep
Multiple Airlines Logo
13:40 - 17:15
EYW
-
LHR
22h 35m
2 stops
Multiple Airlines Logo
06:15 - 18:31
LHR
-
EYW
17h 16m
2 stops
£723Multiple Airlines
Sat, 8 Aug - Sat, 22 Aug
United Airlines Logo
07:07 - 06:30
MIA
-
LHR
42h 23m
2 stops
United Airlines Logo
07:25 - 22:34
LHR
-
MIA
20h 09m
2 stops
£748United Airlines
Fri, 2 Oct - Sun, 11 Oct
Air Canada Logo
13:15 - 08:35
MIA
-
LHR
14h 20m
1 stop
Air Canada Logo
14:05 - 22:17
LHR
-
MIA
13h 12m
1 stop
£748Air Canada
Sat, 29 Aug - Tue, 8 Sep
Air Canada Logo
21:45 - 11:50
MIA
-
LHR
33h 05m
1 stop
Air Canada Logo
14:05 - 22:17
LHR
-
MIA
13h 12m
1 stop
£750Air Canada
Fri, 4 Sep - Mon, 14 Sep
United Airlines Logo
13:44 - 16:40
MIA
-
LHR
21h 56m
2 stops
United Airlines Logo
12:10 - 17:25
LHR
-
MIA
34h 15m
1 stop
£751United Airlines
Thu, 20 Aug - Mon, 14 Sep
Multiple Airlines Logo
13:10 - 11:50
MIA
-
LHR
17h 40m
1 stop
Multiple Airlines Logo
12:15 - 17:00
LHR
-
MIA
9h 45mdirect
£754Multiple Airlines
Thu, 10 Sep - Sun, 20 Sep
American Airlines Logo
12:57 - 06:55
EYW
-
LHR
12h 58m
1 stop
American Airlines Logo
08:15 - 18:52
LHR
-
EYW
15h 37m
2 stops
£771American Airlines
Useful Info

Good to know - Cheap tickets from Florida Keys to London Heathrow Airport

Low seasonJanuary
Cheapest flight£346
Best time to beat the crowds (16% less expensive on average)
Most popular time to fly (23% more expensive on average)
Flight from Miami to London Heathrow Airport

Flights from Florida Keys to London: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from Florida Keys to London 
Verified travelerFlew with British Airways
MIA
-
LHR
Jan 2024
Arrive in plenty of time for check in and security.
NeilFlew with British Airways
MIA
-
LHR
Jan 2024
Try to upgrade. The international facilities at the airport post security are very busy and unpleasant. Try to book into a lounge if you can although you may need to upgrade to business class. the American Airlines lounge is pay on the day but it costs $150 per person.
RobertaFlew with British Airways
MIA
-
LHR
Jan 2024
Navigating through Miami airport requires careful sign reading as signage is pretty poor!

FAQs for booking Florida Keys to London Heathrow Airport flights

  • How does KAYAK find such low prices on flights from Florida Keys to London Heathrow Airport?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Florida Keys to London Heathrow Airport.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Florida Keys to London Heathrow Airport?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to London Heathrow Airport from Florida Keys is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Florida Keys to London Heathrow Airport?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly to London Heathrow Airport with an airline and back to Florida Keys with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Florida Keys to London Heathrow Airport?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to London Heathrow Airport from Florida Keys up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines flying from Florida Keys to London

 
Need help choosing which airline to fly with from Florida Keys to London? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1531 reviews
8.4Crew
7.2Entertainment
7.8Boarding
7.3Food
7.7Comfort
Airline reviews

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

10.0 ExcellentDiane, Apr 2026
AMS - HUY
Read more KLM reviews

As per usual when you Hit the UK it's a slow process through customs Not as efficient at Thailand for sure

The crew were unprofessional with a racist element. I was physically abused as well from one of the crew members

Empty seats next to me - wish it had been for a longer flight!!

They forgot to serve food and the crew was very unfriendly. Never experienced such a bad KLM flight. Usually fly from Toronto. New York was different.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

KLM remains a quality flag carrier airline which maintains its standards whilst all their competitors are lowering theirs.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

The plane. Airbus A330-200. Comfortable for a 7-hour flight. Seats seemed to have more legroom. I was in row 17. Flight was operated by Delta but was better than expected.

All good- I love BA and the professionalism of the crew and pilots.

Sorting on line would have been appreciated Onward information on flights missed No ability to get seating arranged before we got to gate Very unfriendly at gate

I booked the flight with Finnair, which made the arrangements for downloading a boarding pass unnecessarily complicated. I wouldn't do that again. Instead I'd book direct with AA.

Had a nice flight to London on BA will fly with them again in the future

Helpful steward. Allowed me to move to some empty seats and I was able to get some sleep. He also had milk for my tea. Americans don’t realise that cream or half and half ruin tea.

Very rude hostess. She embarrassed me in front of others. I went to sit after taking off in a different sit in the same economic cabin. Was the area where doors are. She come to me very laud and said: go back to your sit those sit are more expensive.wow! No diplomacy. Flight was super full except 3 of those sit. The only person in that row later during the flight occupied all sit laying down!. Once more disappointed at American Airlines. Early flight they lost my luggages for 4 days. Never refund money for replacement for some of essential items purchased..when I booked the flight I thought was Finlandair. I

Food was pretty poor - bland, tasteless. Drinks offerings were very limited also.

Excellent service and always our preferred choice of airline. Was surprised we had to pay for soft drinks though. Other wise great airline and customer service!

The entertainment offerings were not as good as I would have expected, but the service was very good, the crew helpful, and the flight on time! A very pleasant experience overall.

The plane was warm and stuffy. The crew was friendly but got 2 orders wrong. I asked for sparkling water and wine with dinner and got neither. I asked for black coffee with breakfast and got coffee with cream. Service was so slow on my side of the plane they ran out of 2 of the 3 desserts at dinner and I was in row 12.

Great staff great experience, made a 2 hour delay very bearable

I was my pleasure to fly virgin on my birthday for my first solo trip ever 🫶🏼

Overall, flight was excellent but check in was very slow for Premium Economy. Economy queue was shorter but we weren't allowed to use it.

Good overall. Cannot fault the airlines. I have had better entertainment systems before ie ice in Emirates but it was not too bad. Food was decent and staff were friendly.

Miami airport needs more thorough signage. It was a long walk from my transport point to the check in desk,

Flight took off an hour late. Had to stay on the tarmac for half an hour after landing. Both annoying.

The crew was very good. However, the equipment was a bit dated. Some of the electronics were not working. To top it, three bags didn’t arrive with me. Two of them were delivered a day later. I’m still waiting for the third bag, I was so looking forward to this virgin Atlantic flight, but, I am disappointed.

My only complaint is that the pocket in front of me was ripped and my things, like iPad and airline magazines, kept slipping to the floor.

Flight delayed yet again. Crew apathetic and unhelpful re affect on connecting flight.

I think Virgin is one of the best flying experiences, especially from/to the UK. The staff are so helpful and fun, the food is good, seats comfortable, goof entertainment and great value. Check in and boarding is pretty pain free. I also find that the other passengers are generally so kind and considerate than when I've flown other airlines.

Luggage did not make it onto my plane. Business seats were economy with empty row seat. Just horrible experience. Why would the company allow for transfers that don’t give employees enough time to transfer luggages??

For an long range economy flight I feel more space and more meal options need to be offered for flights over 5 hours

The check in agents in PHL and gate agents had to have been the rudest women that I have ever encountered; the agent weighing the bags at check in screamed continuously at all of the guests as did the woman at the gate.I have Executive Platinum status with AA and fly a lot with AA but these ladies were the absolute worst I had the displeasure to encounter!

B-class on an old plane with antiquated amenities and poor service. Landed in Rome w/o bag that didn’t make the connection (plenty of time in London). Bag will come to hotel NOT the day it lands but the following night!! Still waiting for bag…BA had nothing to offer in support and couldn’t even tell me their comp, told to submit receipts and then I’ll learn what is or isn’t covered.

It's a long flight and that is always difficult. I was comfortable and well. The movies available were great and the crew was good.

The chicken adobo was a little too spicy but good otherwise. My personal opinion. Movie selection could be improved, too many horror movies. Could add a few more chick flicks! The flight was bumpy at times. We arrived a little early too! Flight attendants friendly.

really bad they refused to check in luggages that I had purchased, even showing them the transaction receipt from british airways app the staff in miami was MEDIOCRE

Crew never smiled, never helped , told me to make my own bed ( in Upper class), never offered a drink

Was flying in premium eco and there were around 5-6 movies I wanted to watch and none of those could I play for some reasons. Not just me we checked w the person sitting next to me. Few of the movies were only playable :( Also that was not great that we couldn't upgrade to business however tried to, many times before the flight :(

We were ticketed to heathrow instead of Barcelona . Why? per the incompetent ticketing person we had to get off get our bags go through immigration and then get ticketed for the remaining leg. This was not required We missed our flight. Per heathrow agent this is a reoccurring problem from Orlando. They notified British air but problem persists. We were rebooked and arrived 18 hours after we left Mco. Between this the mediocre food and horrible aisle bed. I will never book another British air again

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

Boarding was poor. All groups called immediately one after the other resulting in a long queue in the jetty/jet bridge. Seats were very hard and and did not recline on a 4.5 hour flight. No food was available. Plane was cold. There was no entertainment.

Love the A380 - loads of room. Headphone socket on my seat didn’t work. Sounds like a trivial issue? Well when flying long-haul the in-flight entertainment is what keeps you going so when it doesn’t work it’s a disaster. Pay attention to the details please BA. Spoiled what was otherwise an excellent flight with the usual brilliant crew.

I don’t understand why a reputable airline like BA would delegate their London flights to AA. Makes no sense to me, as most domestic carriers do such a poor job these days. Terminal 3 at LHR is a total dump

The aircraft left 5 hours later than original dipartire time They let all passengers board and sit for 3 hours in a hot air plain with no A/C. Than they made all passengers leave the air plain due to some issues to the engine. Passengers received 1 glass of water the entire time . Than they boarded everyone again and took almost another hour before they took off. I bought these tickets for my 74 years old mother, Julianna Horvathne Kas and my nephew, Balázs Kelemen. Definitely going to request for a compensations!!

Starting with the flight Cairo to London the plain was so poor no entertainment at all uncomfortable seats although it’s 5 hours long,then an American airline plain took me from London to Miami it was a bad experience the crew most of flight time not available and they asked us to help our selves for any snacks if we need. From Miami to London actually was perfect flight with a huge plain and perfect crew but from London to Cairo was horrible plain with stiff fixed seats not movable no entertainment or wi fi very poor Menu which is unacceptable for a business class

Terrible! I missed my flight to my final destination and British airlines and American Airlines keep pointing fingers on each other’s. Nobody wants to take responsibility

They canceled my flight , they put me on a different flight that was delayed and the connection was lost . They lost my luggage. And now I’m stuck with any of my belongings.

They sell 1h /1h30min connection ticket that are impossible to make

The flight was delayed for 7 hours. We missed the connection flight to India. The alternate option was > 17 hours just in lay-overs. So it was awful.

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