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$271+ Cheap flights from Key Largo, FL to Barcelona

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 3/15. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BCN
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Barcelona 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

Cheapest flights from Key Largo to Barcelona
Explore the most affordable flight options available from Key Largo to Barcelona. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 18, 2025.

This FlightHub deal was found by Cheapflights users on 12/17. 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 12/315:15 pmMIA - BCN
1 stop14h 20mIcelandair
Tue 1/1311:50 amBCN - MIA
1 stop15h 05mIcelandair
Deal found 12/17$539
This Cheapflightsfares deal was found by Cheapflights users on 12/16. 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.
Wed 12/3110:00 pmMIA - BCN
1 stop12h 30mBritish Airways
Wed 1/1411:00 amBCN - MIA
Nonstop10h 25mBritish Airways
Deal found 12/16$564
This Royal Air Maroc deal was found by Cheapflights users on 12/17. 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 Royal Air Maroc is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/289:20 pmMIA - BCN
1 stop14h 50mRoyal Air Maroc
Tue 1/137:20 pmBCN - MIA
1 stop30h 00mRoyal Air Maroc
Deal found 12/17$567
This Delta deal was found by Cheapflights users on 12/17. 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.
Wed 12/312:01 pmMIA - BCN
1 stop12h 39mDelta
Tue 1/1310:15 amBCN - MIA
2 stops17h 26mDelta
Deal found 12/17$584
This Iberia deal was found by Cheapflights users on 12/18. 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.
Sat 12/275:20 pmMIA - BCN
1 stop13h 20mIberia
Fri 1/163:05 pmBCN - MIA
Nonstop10h 55mIberia
Deal found 12/18$588
This Delta deal was found by Cheapflights users on 12/17. 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.
Wed 12/316:00 amMIA - BCN
1 stop20h 40mDelta
Mon 1/121:00 pmBCN - MIA
1 stop31h 50mDelta
Deal found 12/17$590
This Kiwi.com deal was found by Cheapflights users on 12/16. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/319:45 pmMIA - BCN
Nonstop9h 20mLEVEL
Wed 5/273:30 pmBCN - MIA
Nonstop10h 30mLEVEL
Deal found 12/16$594
This United Airlines deal was found by Cheapflights users on 12/17. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/317:15 amMIA - BCN
2 stops20h 20mUnited Airlines
Wed 1/1411:00 amBCN - MIA
1 stop15h 29mUnited Airlines
Deal found 12/17$596

Find flight deals from Key Largo to Barcelona

Keep the following information in mind while searching for Key Largo to Barcelona flight deals. Data was last updated December 18, 2025.

Round-trip from

$487
(Kiwi.com)

One-way from

$271
(Trip.com)

Popular in

June

Cheapest in

February

Average price

$811
From Key Largo to Barcelona
Search Deals
One-way flight from Key Largo to Barcelona
Search Deals
Highest demand for flights based on searches. 24% potential increase in price ($225 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 December 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Barcelona 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 December 18, 2025.
Use the filters below to find and compare flights from Key Largo to Barcelona that are best for you.

Fly from

Key Largo

Fly to

Barcelona

Route

Depart

Return

Price

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Wed 2/4

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Sun 2/8

11:50 am-7:30 pm

1 stop13h 40m

$500

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Tue 2/24

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Mon 3/16

10:00 pm-8:30 pm

2 stops27h 30m

$535

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Fri 3/6

9:20 pm-6:10 pm

1 stop14h 50m

Barcelona-El Prat

Tue 9/29

8:10 pm-7:45 pm

1 stop29h 35m

$547

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Mon 4/20

9:30 pm-4:35 pm

1 stop13h 05m

Barcelona-El Prat

Sun 5/10

11:50 am-6:45 pm

1 stop12h 55m

$556

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sun 4/19

12:30 am-7:20 pm

1 stop12h 50m

Barcelona-El Prat

Sun 5/10

3:00 pm-10:20 pm

1 stop13h 20m

$558

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sun 4/12

9:45 pm-1:00 pm

Nonstop9h 15m

Barcelona-El Prat

Wed 4/22

3:30 pm-8:00 pm

Nonstop10h 30m

$559

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Mon 3/2

9:45 pm-4:35 pm

1 stop12h 50m

Barcelona-El Prat

Mon 9/28

11:50 am-6:45 pm

1 stop12h 55m

$566

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sun 3/1

9:20 pm-6:10 pm

1 stop14h 50m

Barcelona-El Prat

Wed 9/30

1:45 pm-7:45 pm

1 stop12h 00m

$572

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Wed 2/25

2:15 pm-2:15 pm

2 stops18h 00m

Barcelona-El Prat

Wed 3/18

12:35 pm-8:27 pm

2 stops36h 52m

$582

MiamiBarcelona

MIA - BCN

MIABCN

Miami

Sun 1/11

7:40 am-8:50 am

2 stops19h 10m

Barcelona-El Prat

Tue 1/20

6:00 am-2:50 pm

1 stop14h 50m

$594

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/15

Showing 1-10 of 31 results
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Best time to book a flight from Key Largo to Barcelona

Have a flexible travel schedule? Discover the best time to fly to Barcelona 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

How far ahead should I book a flight from Key Largo to Barcelona?

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Barcelona. Price data was last updated on December 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. 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?

Currently, October is the cheapest month in which you can book a flight from Key Largo to Barcelona (average of $367). Flying from Key Largo to Barcelona in June is currently the most expensive (average of $572). 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. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 18, 2025.

One of the essential ways to save on airfare from Key Largo to Barcelona is to remain as flexible as possible. Flights that are in the afternoon tend to be the most expensive. A flight at noon could potentially save you up to 28% on airfare.

What is the cheapest day to fly from Key Largo to Barcelona?

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

Travelers seeking maximum savings on their Key Largo to Barcelona 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

Get insights into the airlines that provide service to Barcelona. 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. Reviews last updated December 18, 2025.
Get a feel of what it's like to fly with American Airlines, TAP AIR PORTUGAL, and Iberia from Key Largo to Barcelona by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
11,054 reviews

Crew

8.0

Food

6.5

Overall

7.2

Comfort

7.2

Boarding

7.5

Entertainment

6.9

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
11,054 reviews
American Airlines
7.2
Good
11,054 reviews

Crew

8.0

Food

6.5

Overall

7.2

Comfort

7.2

Boarding

7.5

Entertainment

6.9

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
7.2
Good
2,091 reviews
American Airlines
7.2
Good
11,054 reviews

Crew

8.0

Food

6.5

Overall

7.2

Comfort

7.2

Boarding

7.5

Entertainment

6.9

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
3,053 reviews
American Airlines
7.2
Good
11,054 reviews

Crew

8.0

Food

6.5

Overall

7.2

Comfort

7.2

Boarding

7.5

Entertainment

6.9

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
7,586 reviews
American Airlines
7.2
Good
11,054 reviews

Crew

8.0

Food

6.5

Overall

7.2

Comfort

7.2

Boarding

7.5

Entertainment

6.9

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. 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?

    There are many flights that can get you from Key Largo to Barcelona in 12h 50m. Fly via Air Europa, Royal Air Maroc, or TAP AIR PORTUGAL to get the fastest option. Key Largo and Barcelona are separated by a distance of 4685 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines to fly from Key Largo to Barcelona one-way?

    To fly one-way, consider booking your trip with LEVEL, which is currently one of the cheapest options available, starting at $202. LEVEL flights start at $204 while deals on Iberia start at $221 one-way.

  • What are the most popular routes from Key Largo to Barcelona?

    Most travelers choose Miami - Barcelona-El Prat, Miami - Girona Costa Brava or Miami - Reus when deciding on the best route from Key Largo to Barcelona.

  • What are the most reliable airlines from Key Largo to Barcelona?

    The top 3 most reliable airlines when flying from Key Largo to Barcelona are Finnair (79%), British Airways (73%) and American Airlines (72%).

  • What are the cheapest flights from Key Largo to Barcelona?

    Looking for the cheapest flight from Key Largo to Barcelona? While on average our users pay $1,075, our data indicates the cheapest price to be $212. The most popular route (Miami - Barcelona-El Prat), is priced around $432.

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

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

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

    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.

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

    Yes. Cheapflights offers flight deals from Key Largo to Barcelona 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?

    Currently, October is the cheapest month in which you can book a flight from Key Largo to Barcelona (average of $367). Flying from Key Largo to Barcelona in June is currently the most expensive (average of $572). 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

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Top 10 airlines flying from Key Largo to Barcelona

Discover the top 10 airlines that operate flights from Key Largo to Barcelona. 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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
ITA AirwaysCheapest$310Average$837FlexibilityNo cancel feeOn-time81%
LEVELCheapest$342Average$622FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$385Average$581FlexibilityNo cancel feeOn-time77%
VuelingCheapest$389Average$664FlexibilityNo cancel feeOn-time88%
TAP AIR PORTUGALCheapest$394Average$602FlexibilityNo cancel feeOn-timeN/A
LEVELCheapest$430Average$691FlexibilityNo cancel feeOn-timeN/A
Air EuropaCheapest$432Average$653FlexibilityNo cancel feeOn-time83%
United AirlinesCheapest$476Average$799FlexibilityNo cancel feeOn-time69%
British AirwaysCheapest$481Average$736FlexibilityNo cancel feeOn-time70%
IcelandairCheapest$495Average$797FlexibilityNo cancel feeOn-time76%

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