HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Barcelona-El Prat

$236+ Cheap flights from Key Largo, FL to Barcelona-El Prat (BCN)

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 1/28. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BCN
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to Barcelona-El Prat with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Key Largo to Barcelona-El Prat are usually found in February or January, booked 21 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

Find flight deals from Key Largo to Barcelona-El Prat

Cheapest flights from Key Largo to Barcelona-El Prat
Explore the most affordable flight options available from Key Largo to Barcelona-El Prat. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 30, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:23 amMIA - BCN
2 stops24h 57mScandinavian Airlines
Tue 12/97:10 pmBCN - MIA
1 stop28h 55mScandinavian Airlines
Deal found 10/29$480
This oojo deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/94:35 pmMIA - BCN
1 stop11h 30mTAP AIR PORTUGAL
Fri 1/1612:35 pmBCN - MIA
1 stop14h 45mTAP AIR PORTUGAL
Deal found 10/29$482
This oojo deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/294:35 pmMIA - BCN
1 stop11h 30mTAP AIR PORTUGAL
Fri 12/510:55 amBCN - MIA
1 stop16h 25mTAP AIR PORTUGAL
Deal found 10/30$487
This Iberia deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/59:45 pmMIA - BCN
Nonstop9h 20mIberia
Tue 12/96:40 amBCN - MIA
1 stop15h 05mIberia
Deal found 10/30$489
This Trip.com deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/39:45 pmMIA - BCN
1 stop12h 50mAir Europa
Wed 11/1212:00 pmBCN - MIA
1 stop13h 30mAir Europa
Deal found 10/30$490
This Iberia deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:45 pmMIA - BCN
Nonstop9h 20mIberia
Wed 1/143:05 pmBCN - MIA
Nonstop10h 55mIberia
Deal found 10/29$491
This Mytrip deal was found by Cheapflights users on 10/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/258:20 pmMIA - BCN
2 stops31h 15mMultiple Airlines
Tue 12/25:50 amBCN - MIA
3 stops23h 25mMultiple Airlines
Deal found 10/28$496
This Mytrip deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/24:35 pmMIA - BCN
2 stops17h 25mMultiple Airlines
Tue 12/98:45 pmBCN - MIA
2 stops31h 05mMultiple Airlines
Deal found 10/30$498
This oojo deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/14:35 pmMIA - BCN
1 stop21h 45mTAP AIR PORTUGAL
Mon 12/86:45 amBCN - MIA
1 stop14h 05mTAP AIR PORTUGAL
Deal found 10/30$499
This FlightHub deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/1211:35 pmMIA - BCN
1 stop18h 10mTAP AIR PORTUGAL
Thu 11/206:45 amBCN - MIA
1 stop13h 45mTAP AIR PORTUGAL
Deal found 10/29$503
This lol.travel deal was found by Cheapflights users on 10/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/911:50 pmMIA - BCN
1 stop17h 55mTAP AIR PORTUGAL
Sun 11/2312:35 pmBCN - MIA
1 stop32h 15mTAP AIR PORTUGAL
Deal found 10/30$506
This Trip.com deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/109:45 pmMIA - BCN
1 stop29h 20mAir Europa
Thu 1/2911:50 amBCN - MIA
1 stop13h 40mAir Europa
Deal found 10/29$507

Cheap flight deals from Key Largo to Barcelona-El Prat

Keep the following information in mind while searching for Key Largo to Barcelona-El Prat flight deals. Data was last updated October 30, 2025.

Round-trip from

$478
(Mytrip)

One-way from

$236
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$598
From Key Largo to Barcelona-El Prat
Search Deals
One-way flight from Key Largo to Barcelona-El Prat
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($227 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($30 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Barcelona-El Prat 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, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
Use the filters below to find and compare flights from Key Largo to Barcelona-El Prat Airport that are best for you.

Fly from

Key Largo

Fly to

Barcelona-El Prat

Route

Depart

Return

Price

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Mon 1/19

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Sat 1/24

8:30 pm-7:30 pm

1 stop29h 00m

$486

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sun 1/18

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Sat 1/24

8:30 pm-7:30 pm

1 stop29h 00m

$486

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Fri 1/23

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Tue 2/24

11:50 am-7:30 pm

1 stop13h 40m

$500

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Fri 1/23

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Thu 2/26

11:50 am-7:30 pm

1 stop13h 40m

$500

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Tue 1/13

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Tue 1/27

11:50 am-7:30 pm

1 stop13h 40m

$500

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sat 1/17

9:45 pm-8:55 am

1 stop29h 10m

Barcelona-El Prat

Wed 1/28

11:50 am-7:30 pm

1 stop13h 40m

$514

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sat 1/17

9:45 pm-8:55 am

1 stop29h 10m

Barcelona-El Prat

Thu 1/22

11:50 am-7:30 pm

1 stop13h 40m

$514

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Fri 1/16

9:45 pm-1:05 pm

Nonstop9h 20m

Barcelona-El Prat

Wed 1/28

3:05 pm-8:00 pm

Nonstop10h 55m

$518

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Tue 1/27

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Fri 2/27

11:50 am-7:30 pm

1 stop13h 40m

$530

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Fri 11/28

9:45 pm-1:05 pm

Nonstop9h 20m

Barcelona-El Prat

Fri 12/12

12:30 pm-9:35 pm

1 stop15h 05m

$586

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 22 results
1
2
3

Best time to book a flight from Key Largo to Barcelona-El Prat

Have a flexible travel schedule? Discover the best time to fly to Barcelona-El Prat from Key Largo with our price prediction graph.
Estimated round-trip 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 from Key Largo to Barcelona-El Prat Airport

How far ahead should I book a flight from Key Largo to Barcelona-El Prat Airport?

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Barcelona-El Prat. Price data was last updated on October 24, 2025.

Booking 21 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to Barcelona-El Prat Airport. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Key Largo to Barcelona-El Prat Airport?

Currently, January is the cheapest month in which you can book a flight from Key Largo to Barcelona-El Prat Airport (average of $362). Flying from Key Largo to Barcelona-El Prat Airport in June is currently the most expensive (average of $573). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KE9 to BCN?

Find hourly flight availability from Key Largo to Barcelona-El Prat. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 30, 2025.

One of the essential ways to save on airfare from Key Largo to Barcelona-El Prat Airport is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at noon could potentially save you up to 23% on airfare.

What is the cheapest day to fly from Key Largo to Barcelona-El Prat Airport?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Barcelona-El Prat. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Key Largo to Barcelona-El Prat Airport flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Barcelona-El Prat

Get insights into the airlines that provide service to Barcelona-El Prat. 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 Barcelona-El Prat. Reviews last updated October 30, 2025.
Read through reviews of airlines operating flights from Key Largo to Barcelona-El Prat Airport, such as American Airlines, TAP AIR PORTUGAL, and Iberia. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
American Airlines
7.2
Good
11,033 reviews
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
TAP AIR PORTUGAL
7.1
Good
2,040 reviews
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
Iberia
7.0
Good
3,002 reviews
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.
British Airways
6.7
Okay
7,487 reviews
American Airlines
7.2
Good
11,033 reviews

Crew

8.0

Boarding

7.5

Comfort

7.2

Entertainment

6.9

Food

6.4

Overall

7.2

Reviews

1 / 20
2.0
Mediocre

Anonymous,Aug 2025

MIA - DCA

Flight delayed 5 hours and was told it was due to mechanical issues. Instead of providing lodging due to missed connecting flight, American changed the cause of delay to weather, which meant they were not able required to provide a hotel. To make matters worse, one of our checked bags was lost even though its status said it was “by the plane” but no one at the service desk seemed able to locate it.

Related info for your journey

Find useful and relevant information for your journey from Key Largo to Barcelona-El Prat. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Key Largo to Barcelona-El Prat Airport?

    Air Europa can get you from Key Largo to Barcelona-El Prat Airport in just under 12h 50m. Your travel time can differ by up to . There are 4685 mi between Key Largo and Barcelona-El Prat Airport.

  • What are the most reliable airlines from Key Largo to Barcelona-El Prat Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Key Largo to Barcelona-El Prat Airport on time: Vueling (80%), American Airlines (74%), Finnair (74%).

  • What are the cheapest flights from Key Largo to Barcelona-El Prat Airport?

    The cheapest flight price from Key Largo to Barcelona-El Prat Airport is $267. On average you can expect to pay $1,289. The most popular route, (Miami - Barcelona-El Prat), can usually be booked for $383.

  • Can I find deals for flights from Key Largo to Barcelona-El Prat that include hotel bookings?

    Yes. In addition to deals on Key Largo to Barcelona-El Prat flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Key Largo to Barcelona-El Prat?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key Largo to Barcelona-El Prat.

  • Can I find deals for business class flights from Key Largo to Barcelona-El Prat?

    Yes. Cheapflights offers flight deals from Key Largo to Barcelona-El Prat by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Key Largo to Barcelona-El Prat Airport?

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Barcelona-El Prat Airport (average of $362). Flying from Key Largo to Barcelona-El Prat Airport in June is currently the most expensive (average of $573). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Barcelona-El Prat Airport?

Book flights to Barcelona-El Prat Airport if you plan to visit one of these locations
Calella
Roses
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat
Badalona
Pineda de Mar

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 10 airlines flying from Key Largo to Barcelona-El Prat

Discover the top 10 airlines that operate flights from Key Largo to Barcelona-El Prat. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$310Average$837FlexibilityNo cancel feeOn-time81%
Royal Air MarocCheapest$315Average$586FlexibilityNo cancel feeOn-time75%
LEVELCheapest$342Average$633FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$380Average$607FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$385Average$581FlexibilityNo cancel feeOn-time77%
VuelingCheapest$391Average$667FlexibilityNo cancel feeOn-time88%
LEVELCheapest$430Average$700FlexibilityNo cancel feeOn-timeN/A
Air EuropaCheapest$442Average$648FlexibilityNo cancel feeOn-time83%
IberiaCheapest$452Average$747FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$476Average$838FlexibilityNo cancel feeOn-time69%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.