£120 Find Cheap Flights from Florida Keys to London Heathrow Airport

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 6/10. 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

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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

Mon, 26 Jan - Tue, 10 Feb
British Airways Logo
17:10 - 06:50MIA-LHR
8h 40mdirect
British Airways Logo
11:15 - 16:20LHR-MIA
10h 05mdirect
£327British Airways
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Mon, 26 Jan - Tue, 10 Feb
Iberia Logo
17:30 - 09:20MIA-LHR
10h 50m1 stop
Iberia Logo
11:55 - 17:00LHR-MIA
10h 05mdirect
£328Iberia
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Wed, 3 Dec - Tue, 9 Dec
TAP AIR PORTUGAL Logo
23:35 - 18:55MIA-LHR
14h 20m1 stop
TAP AIR PORTUGAL Logo
06:00 - 14:50LHR-MIA
13h 50m1 stop
£331TAP AIR PORTUGAL
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Mon, 26 Jan - Tue, 10 Feb
Iberia Logo
17:30 - 09:20MIA-LHR
10h 50m1 stop
Iberia Logo
13:30 - 22:05LHR-MIA
13h 35m1 stop
£332Iberia
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Wed, 14 Jan - Sat, 17 Jan
Scandinavian Airlines Logo
20:40 - 08:55MIA-LHR
31h 15m1 stop
Scandinavian Airlines Logo
06:40 - 18:35LHR-MIA
16h 55m1 stop
£338Scandinavian Airlines
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Wed, 29 Oct - Wed, 5 Nov
British Airways Logo
23:00 - 11:30MIA-LHR
8h 30mdirect
British Airways Logo
11:15 - 16:10LHR-MIA
9h 55mdirect
£340British Airways
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Wed, 14 Jan - Sat, 17 Jan
Scandinavian Airlines Logo
20:40 - 08:55MIA-LHR
31h 15m1 stop
Scandinavian Airlines Logo
06:40 - 18:35LHR-MIA
40h 55m2 stops
£343Scandinavian Airlines
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Wed, 14 Jan - Thu, 22 Jan
TAP AIR PORTUGAL Logo
16:35 - 12:40MIA-LHR
15h 05m1 stop
TAP AIR PORTUGAL Logo
19:55 - 21:20LHR-MIA
30h 25m1 stop
£346TAP AIR PORTUGAL
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Sun, 5 Oct - Fri, 31 Oct
Virgin Atlantic Logo
19:25 - 09:25MIA-LHR
9h 00mdirect
Virgin Atlantic Logo
06:30 - 15:50LHR-MIA
13h 20m1 stop
£358Virgin Atlantic
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Mon, 27 Oct - Wed, 12 Nov
Virgin Atlantic Logo
22:25 - 11:10MIA-LHR
8h 45mdirect
Virgin Atlantic Logo
14:00 - 19:25LHR-MIA
10h 25mdirect
£366Virgin Atlantic
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Everything you should know

Cheapest return fare
£327
Overall average: £509
British Airways
Mon 26/1Tue 10/2
MIA - LHR • Direct
Cheapest one-way flight
£120
Typical prices: £269-360
TAP AIR PORTUGAL
Mon 6/10
MIA - LHR • 1 stop
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We hope you love your trip to London!
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Good to know - Cheap tickets from Florida Keys to London Heathrow Airport

Low seasonFebruary
Cheapest flight£120
Best time to beat the crowds (7% less expensive on average)
Most popular time to fly (11% 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 AirwaysMIA-LHRJan 2024
Arrive in plenty of time for check in and security.
NeilFlew with British AirwaysMIA-LHRJan 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 AirwaysMIA-LHRJan 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.
7.6
FinnairOverall score based on 1323 reviews
6.9Entertainment
7.6Boarding
8.1Crew
6.7Food
7.5Comfort
Airline reviews

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

10.0 ExcellentSarah, Aug 2025CPH - HEL
Read more Finnair reviews

Great. It was awesome to have boarding from the front and back of the plane as it made the process go very quickly

It was okay. The airplane was a little smaller than a flight from Thailand to Helsinki.

Wish that everyone would board the back of the plane first. Also let kids on first. The gate wasn’t open at arrival and we waited 45 minutes to takeoff. They made up for time in the air.

This was an absolutely exceptional flight. The flight attendants were extremely attentive and very friendly. They seemed to go out of their way to make us comfortable and to make sure that we had everything we needed., We were in business and were very happy with the size and the details for our pods. We would definitely recommend Finnair and will definitely be flying with them again.

We had an excellent trip with Finnair. This was our first time and we’re very pleased. The only issue was with the boarding - it was a little bit confusing and needs a little bit of streamlining.

Crew very lovely. Arrived an hour late due to bad weather. We were given new tickets to an other flight but it could have been organised better, so we did not have to run through the whole airport to.

Flight delayed over an hour. They said they would hold our connection but then did not.

Major problems checking in at Alaska counter. They could not find our booking code because it came from Finnair.

Do not use KAYAK or Finair for future travel. Unless you purchase the tickets directly from the airline, you were going to have a difficult time checking in. Kayak canceled my flights twice and ended up causing great difficulty in me getting back from Europe because they double sold my tickets between American Airlines and Finair. The event caused significant delays and led to me having to rebook my flights.

The staff were all particularly great. The plane was clean and fresh. The bassinet worked great. It was all very nice.

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

Old airplanes small seats expensive tickets, not as expected overall and not comfortable according to the price

It was an OK flight with below mediocre service by their flight attendants

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

My experience was good overall, the quality of the food really decreased! There used to be a choice between meat and fish now it’s between chicken and pasta! In the choices of entertainment meditation has been added which is very good. Soft chair workout to improve blood circulation and avoid phlebitis should be added.

The only reason the overall rating wasn't "excellent" was due to problems in claiming luggage. The bags are delivered to the main area (Cinta 35) for domestic passengers, but to a DIFFERENT ROOM for international arrivees. After waiting 30 minutes, someone (who didn't appear to be from Air France or the airport) told us to go to another area. There we found our bags, which appeared to have been awaiting us for a while. We had to go through a bag check before leaving the airport. If we had been alerted to this possibility, or better yet, been to go directly to Cinta 34, we could have eliminated quite a bit of waiting.

Much better than the major US Carriers especially in Biz Class.

I wish that the meal included a vegetable or even a salad instead of couscous! Why serve chicken with rice AND couscous? Service was good overall though a bit lacking in friendliness. Usually on air france I've been offered a glass of champagne before dinner, wine with dinner, and a digestif after dinner. We were only offered wine this time!

Food was the worst I’ve had on a VA flight. Normally it’s a lot better

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

These are one of the older seat arrangements facing away from the windows! Not particularly convenient sets. No storage spaces. NO COAT HANGING HOOKS. Inconvenient business class seat compared to any other airlines of similar class. Staff are excellent! Extremely professional, friendly. Food is good too.

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.

The staff was not very polite but the flight was very very nice and comfortable and the entertainment was great

Great crew - old style upper class seats on the older fleet now feels dated

Premium economy more comfortable than economy, but not by much. Did was awful, do not try the omelette. Flight crew were helpful. Flight was delayed by over an hour. Overall but bad, arrived safely and thank God.

Food was excellent. Service was very good. Staff was very helpful to all passengers.

The crew was excellent as ever on Virgin. The special meal was poor unfortunately. More significantly when we arrived at Manchester Airport there was no air bridge provided and we had to exit the plane down a rickety stair case. This is unacceptable for a transatlantic flight. Whilst I understand that this is the airport’s fault at the end of the day the airline is responsible for our transportation and needs to do something.

Super friendly and helpful staff, from check-in desk to cabin crew.

It was fortunate that the flight arrived in London in accordance with schedule, and the luggage was promptly transferred to the luggage carousel. However, I find it concerning that even minor issues in economy cabins are prevalent within the industry. American Airlines, in particular, appears to have the least legroom and feels more crowded due to the proximity of neighboring passengers. Additionally, the crew’s adherence to protocol is inconsistent. While they may enforce certain rules set by the FAA on a select few individuals, they often overlook numerous violations, such as failing to reset seat recline during landing.

Easy and organized getting in and out of the flight

We liked the flight but while we purchased an aisle seat, our seats had a different configuration on this flight. A fellow passenger suggested that the airplane had been changed. Too bad we were not informed and had no chance to modify our seat preferences. We were stuck in the window and middle seats with no chance to walk around and go to the bathroom without disturbing our sleeping fellow passenger.

The crew were not very personable. The crew did not serve tea or coffee. The bathroom was not kept clean. Two out of the 5 toilets in the cabin weren't working.

It was extremely cold in the back of the plane. The seats are uncomfortable and space very small. Crew was excellent as usual.

Check in needed to be in person, not nice. Also I won’t do connections in Charlotte again because you need to go through security again and short connections become a problem

Iberia lost my bag, said they found it in another country, said they sent it to me, but never did. Went my whole trip without my stuff, but expecting it to show up because that’s what they said would happen. Their communication sucks, their website sucks, and to top it all off, their seats are small and uncomfortable. They’re bad at their jobs and they should feel bad about themselves. Do not even get me started on the flight home. AVOID!

I described my experience in the previous window. I didn't realize that there would be another opportunity for this flight. Please look at my response in the previous window.

Boarding was 2 1/2 late no explanation Captain said he did not know why, but he rested at home for an extra couple of hours. Food was edible, Nothing more.

I liked the comfort of the plane. It was unexpected from past experiences.

The seating has become ridiculous… like a contest to see how narrow and short they can be made- forcing anyone over 5’1 to pay more to not be twisting oneself into a pretzel. Really insane- would have thought BA was better than this. Frankly- it cancels out a lot of the positive aspects.

flight was delayed from BWI to London - missed my connecting flight & then connecting flight (also British Air) was delayed - food is awful, TV & movie selection is great

Super tight economy class. My knees were hitting the back of seat in front of me (I'm only 5'6"). My small backpack (sized according to their required dimensions) would not fit under the seat in front of me because there is a box (is that the life jacket?) in the way. Over all, extremely uncomfortable. I forgive the tasteless food, but the tight seating was torture

Didn’t fly with them as someone had cancelled my flight

Online check-in 24 hours in advance something seems not so easy to check in to pick seats and to print a boarding pass

I like the crew, very welcoming. Food can be better. The seat arms don’t go up so. I could use the empty seat next to mine to relax better. 3hrs delay 😠

Boarding was efficient and quick, crew was very attentive, seats were comfortable.

Everything was very good! I personally struggled with the heat in the cabin for the first 2 hours

Very caring crew on board. Didn’t have dinner as I was sleeping. Was seating in the emergency row so I had comfortable leg room

Had a nice little suite although I couldn’t close the door (but I didn’t ask anyone to help). 5K is a nice seat and very private (you look in on first class). Enjoyable flight and nice crew.

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