$325 Find Cheap Flights from Key West to Europe - Compare and Save

1 adult
1 adult, Economy, 0 bags

Save 25% or more on flights. Compare deals from all over the web.

Never overpay with our price tracking tools.

Filter searches by price, airline and more to find your best flights.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Key West to Europe

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
London
London1 stop$871
Prague
Prague2 stops$778
Vienna
Vienna2 stops$753
London
London1 stop$871
Prague
Prague2 stops$778
Vienna
Vienna2 stops$753
Booking Insights

KAYAK's insights & trends for Key West to Europe flights

Get data-powered insights and trends into flights from Key West to Europe to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest month to fly from Key West to Europe?

The cheapest month for flights from Key West to Europe is October, when tickets cost $0 (return) on average. On the other hand, the most expensive months are July and June, when the average cost of round-trip tickets is $1,370 and $1,298 respectively.

Good to know

Cheapest flight

$325
Flight from Key West to London Heathrow Airport

FAQs - booking Europe flights

  • How does KAYAK find such low prices on flights from Key West to Europe?

    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 Key West to Europe.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Key West to Europe?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Key West to Europe is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Key West to Europe?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly from Key West to Europe with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Key West to Europe?

    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 from Key West to Europe up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 4 airlines serving from Key West to Europe

 
Need help choosing which airline to fly with from Key West to Europe? 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
DeltaOverall score based on 8689 reviews
8.5Crew
7.8Comfort
7.8Entertainment
8.1Boarding
7.2Food
Airline reviews

Delta always provides stellar service. I am always impressed and will try my best to travel via Delta if I can afford it.

10.0 ExcellentCharlean, Oct 2026
Read more Delta reviews

Delta always provides stellar service. I am always impressed and will try my best to travel via Delta if I can afford it.

I think in the future I cannot fly anything less than Comfort plus. The seats vary depending on the plane. The people are extremely nice and funny. I try to only fly Delta if I can help it.

Great flight. Thank you for the upgrade to first class.

Everything was great. The only thing that wasn’t was the breakfast calzone which was basically warm bread. It was very tasteless and wasn’t good at all

I usually like delta. However this is my second flight that the wifi does not work

Some of the passengers are coming on board with luggage so overstuffed and/or too large that have no business going into the overhead bins.

Crew was great. Near on time departure and early arrival. Snacks are always meh. Not a fan of the "pay for everything including miles " proposal unless base flight rate going to be 100 bucks.

We had a lot of really rough weather but that was not Delta's fault. Pilot was amazing.

The boarding process needs to be refined. Sometimes the gate crew call out the boarding zone, and then flip to the monitor to show which zones are boarding. So unless everyone is gathered around to see the monitor there is usually confusion as wi which zones are boarding.

The young man who was our flight attendant in first class was lazy and did not do his job well at all. Never offered drinks upon boarding - actually I take that back... said "are you okay with water" as if I do not want to get you anything else, only passed the snacks around once, got my drink order wrong and then never offered a second round of drinks. He was the worst I have ever seen on Delta and we fly a lot.

Fantastic experience once again flying with United! There was great communication from the cockpit and one of the flight attendants went out of her way to get my two little kids some special treats which elevated our travel experience coming home.

Flight attendants need to know their plane. Seated in first row yesterday. The seat had about a 1 inch recline that was not adjustable. I don't appreciate being awakened to raise a seat that can't go any further forward and such a small recline is either irrelevant or the plane needs to be repaired. Not the way to treat any customer and especially the ones who have paid that level of money for the seats.

Flights was great, service and transit support was outstanding - but the food was limited and of poor quality - only a snack on the first hour for 2 hours 1/2 leg. and a light breakfast on the second 4 hour leg.

typical but they have finally enhanced the wifi on some UA flights. Boy, its such a huge improvement

Return flight was perfect. All on time and no hiccups. However, going was another story. I don't blame United for the weather, but I am rather disappointed in its response to my getting stranded in my layover city for the night. United gave me a $20 food voucher. That's it. But besides this policy, the employees were incredibly helpful rerouting me to my final destination in Fort Lauderdale, FL. So overall, 8 out of 10. 10 out of 10 for flight comfort, inflight service and before flight service. 5 out of 10 for layover handling.

The price. Omg $1100. Was crazy and it was not clear on the website.

Delayed too much. 1.5 hrs in the airport and another 1 hr in the runway. Got too late in the night. There was no proper food available.

Did not like the check in guy quibbling over a couple pounds at the luggage weigh in

This is related to my second leg of the flight, from Washington DC to SFO. I understand things happen, but I got home at 3 am for a 12:59 am landing. I live 10 min from the airport. Bridge breaks when a few rows of the plane are off? Maintenance didn’t catch that?

WiFi was slow as compared to trip down. Maybe because it was a night flight and more people were using it?

Seats were very tight for a 17 hour flight. Baby cried for 15 out of 17 hours.

Good flight, excellent personnel; poor comfort, small seats, big cost.

This trip on American was the WORST I have ever experienced. The plan was LATE taking off from Tucson due to mechanical issues. It caused me to arrive late in Dallas, so I tried to move flights so I would not miss my dinner meeting. First attempt, that flight was delayed, Second attempt, that flight was also delayed. Got back on original flight, the mechanical issue was NOT fixed, so we de-planed and had to find the new gate. Overall, was which was 4 hours delayed and missed the dinner meeting. Friday return, flight from Orlando was on time and landed early. Then the next flight was delayed due to crew coming in late, and them waiting on other passengers. After 90 minutes of delay, we boarded, and then were informed the Fist Officer could not fly due to time constraints. At 12:15 AM we were offered a hotel for a 4:20 boarding flight. Not happening. DFW was COLD and no place to sleep. Plane delayed again to 6:50, but was late taking off AGAIN. Finally landed in Tucson at around 8AM. Should be refunded 75% of the ticket costs due to negligence, nothing more.

Cabin was bone dry, no humidity whatsoever, and pretty warm; and beverage service didn't start for at least an hour. I had to go to the back for water and the FAs tried telling me it was always this way for all Miami flights, which is complete nonsense. Avoid the MAX8 like the plague.

Im sitting here waiting over an hour for my golf clubs

Flight was 2+ hours delayed and they “misplaced” all 3 of our checked-in bags.

Overall, really good experience, on time and the comfort was there. Wi-Fi was easy to connect

Flight was delayed 5 hours only to be cancelled at 1:30am. I did not get on the rescheduled flight because of worry it would be delayed (which it was). I needed to drive home. Horrible.

When there are many passengers who are going to miss a connecting flight, they always say please let them off first. But the flight attendant never manages that part of the process. It would be helpful if they would repeat that and stress that to the other passengers.

I have never been assaulted they way I was today in Charlotte - shame on American

Thanks to a delay of an hour of my flight to Philadelphia on American Airlines I missed my connecting flight to Amsterdam. On arrival at Philadelphia he crew on the delayed flight did not ask the passengers to let connecting passengers get off first and I arrived a few minutes after boarding was closed at the original time for the flight to AMS, this despite the fact that I had received a message from American Airlines that departure was delayed by 25 minutes. Overall very poor service, no effort from the part of American Airlines to accommodate the passenger, just rebook the flight for the next day.

Somone switched seats to sit near friend causing us to be disconnected (3) business class. Very disappointed. Staff did nothing.

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.

I was attacked in the Miami airport and the staff did nothing. On my flight from London to Miami one of the flight attendants screamed at me and demanded I keep my seat in the upright position at all times during the fight so the man behind me was comfortable for the flight. I will never in my life use British airways again

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.

The overall seat and cushion needs to be updated. It was hard and no support. My butt was numb for most of the flight. The food was subpar at best being in premium economy cost. The flight attendants were excellent and attentive during the whole flight. Disappointed I had to select our seats 24 hours prior.

Old tired plane, Uncomfortable business class seat. Breakfast dreadful and meagre. At least flight was on time!

The airline was efficient and accommodating to work with though there was a delay. Appreciate the service and smooth experience!

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

More options for your flight to Europe

Complete your trip to Europe with a hotel stay or car rental