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Barcelona-El Prat

$239+ 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 10/5. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BCN
oct. 15 — oct. 221
mié. 10/15
mié. 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Barcelona-El Prat are usually found in February or January, booked 78 days in advance, depart on a Sunday or Wednesday and return on a Wednesday

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 septiembre 15, 2025.

Round-trip from

$495
(Air Canada)

One-way from

$239
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$677
From Key Largo to Barcelona-El Prat
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One-way flight from Key Largo to Barcelona-El Prat
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Highest demand for flights based on searches. 24% potential increase in price ($230 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($31 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 septiembre 15, 2025.

This Air Canada deal was found by Cheapflights users on 9/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/178:00 amMIA - BCN
1 stop19h 35mMultiple Airlines
mié. 11/268:30 pmBCN - MIA
2 stops29h 46mMultiple Airlines
Deal found 9/13$495
This American Airlines deal was found by Cheapflights users on 9/12. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/11:29 pmMIA - BCN
1 stop11h 16mAmerican Airlines
mar. 10/77:45 amBCN - MIA
1 stop15h 20mAmerican Airlines
Deal found 9/12$496
This Delta deal was found by Cheapflights users on 9/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/14:35 pmMIA - BCN
1 stop18h 35mDelta
mié. 10/89:30 amBCN - MIA
1 stop16h 30mDelta
Deal found 9/14$497
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/262:30 pmMIA - BCN
1 stop12h 30mIberia
dom. 12/73:05 pmBCN - MIA
Nonstop10h 55mIberia
Deal found 9/14$498
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/2911:00 pmMIA - BCN
1 stop12h 30mBritish Airways
mar. 11/1811:20 amBCN - MIA
1 stop14h 10mBritish Airways
Deal found 9/14$499
This Air Canada deal was found by Cheapflights users on 9/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/2111:50 amMIA - BCN
2 stops38h 00mAir Canada
mar. 10/712:10 pmBCN - MIA
1 stop31h 10mAir Canada
Deal found 9/13$500
This FlightHub deal was found by Cheapflights users on 9/13. 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.
mié. 11/195:10 pmMIA - BCN
1 stop12h 00mMultiple Airlines
mié. 11/263:05 pmBCN - MIA
Nonstop10h 55mMultiple Airlines
Deal found 9/13$501
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/811:16 amMIA - BCN
2 stops15h 44mDelta
mié. 10/2211:35 amBCN - MIA
1 stop15h 16mDelta
Deal found 9/15$502
This Cheapflightsfares deal was found by Cheapflights users on 9/14. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/295:05 pmMIA - BCN
1 stop10h 55mIberia
mié. 11/511:00 amBCN - MIA
Nonstop10h 00mIberia
Deal found 9/14$503
This Air Canada deal was found by Cheapflights users on 9/14. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/2310:58 amMIA - BCN
2 stops14h 52mMultiple Airlines
mar. 10/712:10 pmBCN - MIA
2 stops38h 38mMultiple Airlines
Deal found 9/14$504
This oojo deal was found by Cheapflights users on 9/14. 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.
vie. 10/174:35 pmMIA - BCN
1 stop23h 15mTAP AIR PORTUGAL
vie. 10/243:00 pmBCN - MIA
1 stop12h 45mTAP AIR PORTUGAL
Deal found 9/14$505
This Iberia deal was found by Cheapflights users on 9/14. 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.
mar. 11/46:20 pmMIA - BCN
1 stop14h 00mIberia
dom. 11/163:05 pmBCN - MIA
Nonstop10h 55mIberia
Deal found 9/14$506

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 septiembre 15, 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

dom. 11/30

9:45 pm-1:05 pm

Nonstop9h 20m

Barcelona-El Prat

mié. 12/17

3:05 pm-8:00 pm

Nonstop10h 55m

$500

MiamiBarcelona

MIA - BCN

MIABCN

Miami

mar. 11/18

8:05 am-8:40 am

1 stop18h 35m

Barcelona-El Prat

lun. 12/1

1:00 pm-2:50 pm

1 stop31h 50m

$501

MiamiBarcelona

MIA - BCN

MIABCN

Miami

mié. 10/8

12:05 pm-9:00 am

2 stops14h 55m

Barcelona-El Prat

mié. 10/22

9:30 am-8:00 pm

1 stop16h 30m

$502

MiamiBarcelona

MIA - BCN

MIABCN

Miami

mié. 10/1

7:10 am-6:00 am

1 stop16h 50m

Barcelona-El Prat

mar. 10/7

9:55 am-11:19 pm

2 stops19h 24m

$510

MiamiBarcelona

MIA - BCN

MIABCN

Miami

sáb. 10/25

4:30 pm-12:45 pm

1 stop14h 15m

Barcelona-El Prat

sáb. 11/8

9:10 pm-10:05 pm

1 stop30h 55m

$511

MiamiBarcelona

MIA - BCN

MIABCN

Miami

dom. 9/28

6:05 am-8:20 am

2 stops20h 15m

Barcelona-El Prat

mié. 10/8

6:50 am-6:51 pm

2 stops18h 01m

$516

MiamiBarcelona

MIA - BCN

MIABCN

Miami

vie. 3/6

9:45 pm-7:55 am

2 stops28h 10m

Barcelona-El Prat

lun. 3/23

11:50 am-8:30 pm

1 stop13h 40m

$518

MiamiBarcelona

MIA - BCN

MIABCN

Miami

jue. 11/13

10:00 pm-4:05 pm

1 stop12h 05m

Barcelona-El Prat

jue. 11/20

11:00 am-3:00 pm

Nonstop10h 00m

$528

MiamiBarcelona

MIA - BCN

MIABCN

Miami

mié. 10/15

7:40 pm-2:05 pm

1 stop12h 25m

Barcelona-El Prat

mar. 10/21

11:15 am-11:16 am

1 stop30h 01m

$529

MiamiBarcelona

MIA - BCN

MIABCN

Miami

mié. 12/10

11:45 am-11:10 am

2 stops17h 25m

Barcelona-El Prat

mié. 12/17

6:00 am-11:36 pm

2 stops23h 36m

$529

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 20 results
1
2

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 September 12, 2025.

Booking 78 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 $523). Flying from Key Largo to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,059). 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 septiembre 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to Barcelona-El Prat Airport as you normally would.

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 Wednesday mornings 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.

Weekly flight availability from Key Largo to Barcelona-El Prat Airport

Explore weekly flight availability from Key Largo to Barcelona-El Prat. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated septiembre 15, 2025.

The most flights from KE9 to BCN are scheduled on a Wednesday (9 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

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 septiembre 15, 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
10,000 reviews

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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
10,000 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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
1,975 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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
2,924 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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
7,361 reviews
American Airlines
7.2
Good
10,000 reviews

Overall

7.2

Boarding

7.5

Comfort

7.2

Crew

8.0

Entertainment

6.9

Food

6.4

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?

    Iberia, Delta, and TAP AIR PORTUGAL can get you from Key Largo to Barcelona-El Prat Airport in just under 9h 20m. Your travel time can differ by up to 9h 15m. There are 4685 mi between Key Largo and Barcelona-El Prat Airport. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 (79%), Finnair (79%).

  • 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 $250. On average you can expect to pay $1,101. The most popular route, (Miami - Barcelona-El Prat), can usually be booked for $370.

  • 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 $523). Flying from Key Largo to Barcelona-El Prat Airport in June is currently the most expensive (average of $1,059). 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
Castelldefels
L'Hospitalet de Llobregat
Cadaques
El Prat de Llobregat
Badalona
Pineda de Mar
Santa Susanna

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 septiembre 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Royal Air MarocCheapest$291Average$584FlexibilityNo cancel feeOn-time75%
ITA AirwaysCheapest$310Average$837FlexibilityNo cancel feeOn-time81%
LEVELCheapest$342Average$611FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$371Average$589FlexibilityNo cancel feeOn-timeN/A
VuelingCheapest$391Average$668FlexibilityNo cancel feeOn-time88%
LEVELCheapest$429Average$707FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$432Average$782FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$435Average$680FlexibilityNo cancel feeOn-time77%
Air EuropaCheapest$444Average$652FlexibilityNo cancel feeOn-time83%
DeltaCheapest$470Average$794FlexibilityNo cancel feeOn-timeN/A

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