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$247+ 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 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BCN
jun. 17 — jun. 241
mar. 6/17
mar. 6/24
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Barcelona are usually found in January or February, booked 78 days in advance, depart on a Wednesday or Sunday and return on a Wednesday

Cheap 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 junio 12, 2025.

Round-trip from

$603
(United Airlines)

One-way from

$247
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$1,023
From Key Largo to Barcelona
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One-way flight from Key Largo to Barcelona
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Highest demand for flights based on searches. 26% potential increase in price ($240 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 June 2025
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Find 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 junio 12, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 6/12. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1311:15 amMIA - BCN
2 stops25h 05mScandinavian Airlines
vie. 12/127:10 pmBCN - MIA
2 stops52h 40mScandinavian Airlines
Deal found 6/12$603
This Royal Air Maroc deal was found by Cheapflights users on 6/12. 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 Royal Air Maroc is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/79:20 pmMIA - BCN
1 stop14h 50mRoyal Air Maroc
jue. 12/117:10 pmBCN - MIA
1 stop30h 10mRoyal Air Maroc
Deal found 6/12$604
This Iberia deal was found by Cheapflights users on 6/12. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/209:55 pmMIA - BCN
1 stop15h 20mIberia
vie. 10/178:00 amBCN - MIA
1 stop13h 05mIberia
Deal found 6/12$605
This British Airways deal was found by Cheapflights users on 6/12. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/39:45 pmMIA - BCN
Nonstop9h 25mMultiple Airlines
mar. 8/191:30 pmBCN - MIA
Nonstop9h 45mMultiple Airlines
Deal found 6/12$606
This Air Canada deal was found by Cheapflights users on 6/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 8/257:55 amMIA - BCN
1 stop17h 55mAir Canada
vie. 9/512:10 pmBCN - MIA
2 stops32h 01mAir Canada
Deal found 6/12$610
This Air Europa deal was found by Cheapflights users on 6/12. 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 Air Europa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/259:30 pmMIA - BCN
1 stop29h 25mAir Europa
mar. 10/2111:50 amBCN - MIA
1 stop12h 55mAir Europa
Deal found 6/12$612
This United Airlines deal was found by Cheapflights users on 6/10. 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.
dom. 8/34:16 pmMIA - BCN
1 stop14h 59mUnited Airlines
mar. 8/196:00 amBCN - MIA
1 stop17h 30mUnited Airlines
Deal found 6/10$615
This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 9/234:35 pmMIA - BCN
Nonstop9h 00mFinnair
lun. 10/69:10 pmBCN - MIA
1 stop22h 20mFinnair
Deal found 6/10$619
This American Airlines deal was found by Cheapflights users on 6/11. 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.
dom. 8/34:35 pmMIA - BCN
Nonstop9h 00mAmerican Airlines
mar. 8/191:30 pmBCN - MIA
Nonstop9h 45mAmerican Airlines
Deal found 6/11$623
This Delta deal was found by Cheapflights users on 6/11. 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.
dom. 7/2711:20 amMIA - BCN
1 stop12h 40mDelta
mié. 8/209:30 amBCN - MIA
2 stops19h 07mDelta
Deal found 6/11$628
This TAP AIR PORTUGAL deal was found by Cheapflights users on 6/12. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/134:35 pmMIA - BCN
1 stop11h 30mTAP AIR PORTUGAL
vie. 12/122:35 pmBCN - MIA
1 stop13h 00mTAP AIR PORTUGAL
Deal found 6/12$635
This Austrian Airlines deal was found by Cheapflights users on 6/10. 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 Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/184:40 pmMIA - BCN
2 stops21h 05mAustrian Airlines
mar. 11/259:55 amBCN - MIA
2 stops34h 45mAustrian Airlines
Deal found 6/10$667

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 junio 12, 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

dom. 8/3

6:30 am-8:20 am

2 stops19h 50m

Barcelona-El Prat

mar. 8/19

1:50 pm-2:40 pm

1 stop30h 50m

$603

MiamiBarcelona

MIA - BCN

MIABCN

Miami

dom. 8/3

9:45 pm-1:10 pm

Nonstop9h 25m

Barcelona-El Prat

mar. 8/19

1:30 pm-5:15 pm

Nonstop9h 45m

$604

MiamiBarcelona

MIA - BCN

MIABCN

Miami

vie. 8/8

4:35 pm-9:50 pm

1 stop23h 15m

Barcelona-El Prat

sáb. 8/23

10:40 pm-10:10 pm

1 stop29h 30m

$607

MiamiBarcelona

MIA - BCN

MIABCN

Miami

sáb. 9/6

9:45 pm-1:10 pm

Nonstop9h 25m

Barcelona-El Prat

mié. 10/15

3:40 pm-8:00 pm

Nonstop10h 20m

$609

MiamiBarcelona

MIA - BCN

MIABCN

Miami

lun. 8/25

7:55 am-7:50 am

1 stop17h 55m

Barcelona-El Prat

vie. 9/5

12:10 pm-2:11 pm

2 stops32h 01m

$610

MiamiBarcelona

MIA - BCN

MIABCN

Miami

dom. 8/3

4:35 pm-7:35 am

Nonstop9h 00m

Barcelona-El Prat

mar. 8/19

1:30 pm-5:15 pm

Nonstop9h 45m

$623

MiamiBarcelona

MIA - BCN

MIABCN

Miami

dom. 8/3

4:35 pm-7:35 am

Nonstop9h 00m

Barcelona-El Prat

mar. 8/19

1:30 pm-5:15 pm

Nonstop9h 45m

$624

MiamiBarcelona

MIA - BCN

MIABCN

Miami

dom. 7/27

11:20 am-6:00 am

1 stop12h 40m

Barcelona-El Prat

mié. 8/20

9:30 am-10:37 pm

2 stops19h 07m

$628

MiamiBarcelona

MIA - BCN

MIABCN

Miami

dom. 8/10

11:19 am-6:00 am

1 stop12h 41m

Barcelona-El Prat

lun. 8/18

9:15 pm-2:15 pm

1 stop23h 00m

$654

MiamiBarcelona

MIA - BCN

MIABCN

Miami

vie. 9/5

7:00 am-6:10 pm

2 stops29h 10m

Barcelona-El Prat

vie. 9/12

7:00 pm-11:13 pm

2 stops34h 13m

$656

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 26 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 June 9, 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, January is the cheapest month in which you can book a flight from Key Largo to Barcelona (average of $523). Flying from Key Largo to Barcelona in June is currently the most expensive (average of $1,062). 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 junio 12, 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 as you normally would.

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 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

Explore weekly flight availability from Key Largo to Barcelona. 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 junio 12, 2025.

The most flights from KE9 to S37 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).

Rainfall in Barcelona by month

Plan your trip to Barcelona by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Barcelona ranges from 0.8 - 3.6 inches per month. October is typically the wettest month, when rainfall can reach 3.6 in. July is typically the driest time to visit Barcelona when rainfall is around 0.8 in.

Temperature in Barcelona by month

Plan your trip to Barcelona by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Barcelona, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 75.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

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 junio 12, 2025.
Read reviews from past customers who have flown Delta, Finnair and Air France from Key Largo to Barcelona. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Delta
8.0
Very good
7,946 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.
Turkish Airlines
7.3
Good
3,848 reviews
Delta
8.0
Very good
7,946 reviews

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Crew

8.5

Reviews

1 / 20
6.0
Good

pilar,May 2025

RSW - ATL

The stewardess was not very nice because I requested two glasses of water. She didn’t even offer the snacks to me. She seemed angry and I felt very bad about her reaction. Also, the flight was full and you could not move. The airline should provide seats for obese people in consideration to the rest pf the passengers.

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.

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

    To fly one-way, consider booking your trip with TAP AIR PORTUGAL, which is currently one of the cheapest options available, starting at $256. Vueling flights start at $292 while deals on Iberia start at $293 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 Vueling (91%), Qatar Airways (91%) and American Airlines (84%).

  • 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 $2,006, our data indicates the cheapest price to be $212. The most popular route (Miami - Barcelona-El Prat), is priced around $341.

  • 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, January is the cheapest month in which you can book a flight from Key Largo to Barcelona (average of $523). Flying from Key Largo to Barcelona in June is currently the most expensive (average of $1,062). 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

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

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 junio 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Turkish AirlinesCheapest$153Average$688FlexibilityNo cancel feeOn-time77%
LEVELCheapest$284Average$539FlexibilityNo cancel feeOn-timeN/A
Royal Air MarocCheapest$315Average$584FlexibilityNo cancel feeOn-time75%
VuelingCheapest$343Average$663FlexibilityNo cancel feeOn-time88%
TAP AIR PORTUGALCheapest$369Average$544FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$415Average$783FlexibilityNo cancel feeOn-time77%
ITA AirwaysCheapest$432Average$711FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$436Average$707FlexibilityNo cancel feeOn-time67%
British AirwaysCheapest$436Average$708FlexibilityNo cancel feeOn-time70%
Air EuropaCheapest$442Average$663FlexibilityNo cancel feeOn-time83%

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