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$305+ Cheap flights from Key Largo, FL to Madrid, Spain (MAD)

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 3/30. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — MAD
Apr 2 — Apr 91
Wed 4/2
Wed 4/9
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Madrid Barajas are usually found in February or January, booked 52 days in advance, depart on a Wednesday or Tuesday and return on a Thursday

Cheap flight deals from Key Largo to Madrid

Keep the following information in mind while searching for Key Largo to Madrid flight deals. Data was last updated March 28, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$512
(Kiwi.com)

One-way from

$307
(eDestinos)

Popular in

June

Cheapest in

February

Average price

$579
Provider with most accurate pricing for Miami-Madrid Barajas flight deals.
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Provider most trusted by Cheapflights users for Miami-Madrid Barajas flights.
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From Key Largo to Madrid Barajas
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One-way flight from Key Largo to Madrid Barajas
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Highest demand for flights based on searches. 26% potential increase in price ($236 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in March 2025
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Find flight deals from Key Largo to Madrid

Cheapest flights from Key Largo to Madrid
Explore the most affordable flight options available from Key Largo to Madrid. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 28, 2025.

This oojo deal was found by Cheapflights users on 3/27. 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 10/69:30 pmMIA - MAD
Nonstop8h 35mAir Europa
Sat 11/13:25 pmMAD - MIA
Nonstop10h 00mAir Europa
Deal found 3/27$509
This Air Canada deal was found by Cheapflights users on 3/27. 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.
Sun 3/306:05 pmMIA - MAD
1 stop30h 35mAir Canada
Fri 4/412:45 pmMAD - MIA
1 stop34h 28mAir Canada
Deal found 3/27$511
This Gotogate deal was found by Cheapflights users on 3/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/288:50 pmMIA - MAD
1 stop16h 55mMultiple Airlines
Fri 4/412:45 pmMAD - MIA
2 stops17h 09mMultiple Airlines
Deal found 3/26$512
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Thu 3/277:47 pmMIA - MAD
2 stops54h 18mUnited Airlines
Tue 4/112:45 pmMAD - MIA
2 stops31h 44mUnited Airlines
Deal found 3/27$513
This oojo deal was found by Cheapflights users on 3/27. 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 10/2812:20 amMIA - MAD
1 stop29h 25mITA Airways
Wed 11/126:00 pmMAD - MIA
1 stop28h 15mITA Airways
Deal found 3/27$514
This oojo deal was found by Cheapflights users on 3/27. 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 3/299:05 amMIA - MAD
1 stop18h 30mBritish Airways
Wed 4/91:45 pmMAD - MIA
1 stop16h 13mBritish Airways
Deal found 3/27$515
This KLM deal was found by Cheapflights users on 3/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/11:38 pmMIA - MAD
1 stop13h 57mKLM
Tue 4/810:05 amMAD - MIA
1 stop15h 48mKLM
Deal found 3/26$517
This FlightHub deal was found by Cheapflights users on 3/27. 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.
Sun 10/124:30 pmMIA - MAD
1 stop22h 55mTAP AIR PORTUGAL
Sun 11/97:40 amMAD - MIA
1 stop20h 10mTAP AIR PORTUGAL
Deal found 3/27$519
This Virgin Atlantic deal was found by Cheapflights users on 3/27. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/17:34 amMIA - MAD
1 stop18h 16mVirgin Atlantic
Tue 4/810:05 amMAD - MIA
1 stop17h 33mVirgin Atlantic
Deal found 3/27$526
This Cheapflightsfares deal was found by Cheapflights users on 3/27. 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 10/82:57 pmMIA - MAD
1 stop11h 18mIberia
Wed 10/154:15 pmMAD - MIA
Nonstop9h 40mIberia
Deal found 3/27$529
This Finnair deal was found by Cheapflights users on 3/27. 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.
Tue 4/13:25 pmMIA - MAD
Nonstop8h 10mFinnair
Thu 5/14:15 pmMAD - MIA
Nonstop10h 00mFinnair
Deal found 3/27$536
This Delta deal was found by Cheapflights users on 3/27. 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.
Sat 3/291:38 pmMIA - MAD
1 stop13h 57mDelta
Wed 4/96:00 amMAD - MIA
2 stops21h 18mDelta
Deal found 3/27$542

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo to Madrid 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 March 28, 2025.
Use the filters below to find and compare flights from Key Largo to Madrid that are best for you.

Fly from

Key Largo

Fly to

Madrid

Route

Depart

Return

Price

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Mon 3/31

8:00 am-6:40 am

1 stop16h 40m

Madrid Barajas

Wed 4/9

12:45 pm-12:48 pm

1 stop30h 03m

$510

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Wed 4/2

3:25 pm-5:35 am

Nonstop8h 10m

Madrid Barajas

Wed 4/9

11:35 am-11:29 pm

1 stop17h 54m

$512

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Mon 5/12

5:15 pm-9:30 am

1 stop34h 15m

Madrid Barajas

Thu 5/22

9:45 pm-2:20 pm

1 stop22h 35m

$513

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Sun 3/30

9:46 am-9:35 am

1 stop17h 49m

Madrid Barajas

Tue 4/1

1:45 pm-9:30 pm

1 stop13h 45m

$515

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 4/1

6:15 am-6:40 am

2 stops18h 25m

Madrid Barajas

Mon 4/7

11:15 am-11:51 pm

2 stops18h 36m

$517

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 4/1

11:15 am-7:50 am

1 stop14h 35m

Madrid Barajas

Tue 4/8

10:05 am-7:53 pm

1 stop15h 48m

$526

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 4/1

6:00 am-7:50 am

2 stops19h 50m

Madrid Barajas

Tue 4/8

10:05 am-7:53 pm

1 stop15h 48m

$530

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 4/1

6:45 pm-5:35 pm

1 stop16h 50m

Madrid Barajas

Sat 4/5

7:10 am-5:05 pm

1 stop15h 55m

$548

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 4/1

3:32 pm-5:10 pm

2 stops19h 38m

Madrid Barajas

Sun 4/6

5:55 am-11:14 pm

2 stops23h 19m

$549

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 4/1

9:30 pm-12:05 pm

Nonstop8h 35m

Madrid Barajas

Tue 4/8

3:25 pm-6:45 pm

Nonstop9h 20m

$553

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/26

Showing 1-10 of 26 results
1
2
3

Best time to book a flight from Key Largo to Madrid

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Madrid. Price data was last updated on March 21, 2025.

The best time to book flights from Key Largo to Madrid is 52 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Key Largo to Madrid?

Currently, November is the cheapest month in which you can book a flight from Key Largo to Madrid (average of $543). Flying from Key Largo to Madrid in June is currently the most expensive (average of $1,107). 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 MAD?

Find hourly flight availability from Key Largo to Madrid. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 28, 2025.

When flying from Key Largo to Madrid, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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

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

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

Rainfall in Madrid by month

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

In terms of precipitation, rainfall in Madrid ranges from 0.4 - 2.4 inches per month. November is typically the wettest month, when rainfall can reach 2.4 in. July is typically the driest time to visit Madrid when rainfall is around 0.4 in.

Temperature in Madrid by month

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

If weather is an important factor for your trip to Madrid, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Madrid

Get insights into the airlines that provide service to Madrid. 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 Madrid. Reviews last updated March 28, 2025.
See what other customers who have flown with Delta, KLM and Finnair from Key Largo to Madrid have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Delta
8.0
Very good
7,896 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
KLM
7.8
Good
1,321 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Finnair
7.6
Good
1,267 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
Air France
7.4
Good
1,424 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.
United Airlines
7.4
Good
8,603 reviews
Delta
8.0
Very good
7,896 reviews

Entertainment

7.9

Overall

8.0

Food

7.3

Comfort

8.0

Boarding

8.2

Crew

8.5

Reviews

1 / 20
2.0
Mediocre

Santiago,Apr 2024

MCO - ATL

When I was going to board, one of the staff members told me that I could not board with my passport bag because it was tree items and I would need to check a bag. This was so stupid ! The bag was small. So I had to put my things in my pockets, put the funny bag inside the other bag. Then go throw it. Then in the plane put everything back again in my funny bag.

Related info for your journey

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

  • What airport do you fly into for flights to Madrid from Key Largo?

    Located just 8.5 mi from the city center, Madrid Barajas is the airport most travelers will use when flying to Madrid from Key Largo. Booking flights from Key Largo to Barajas (MAD) should be relatively easy as there are 8 daily inbound flights from Key Largo from 21 different airlines.

  • How popular is this Key Largo to Madrid flight route?

    Within the past month, 275 users have taken a look at flights from Key Largo to Madrid Barajas.

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

    The cheapest airline one-way is Vueling, with whom users have recently found tickets for as low as $307. However, be on the lookout for offers from TAP AIR PORTUGAL and Air Europa, as they are both options that can get you from Key Largo to Madrid for a low price.

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

    Consider Air Europa (97%), SAUDIA (97%) or Etihad Airways (97%) when booking your flight. These represent the most reliable airlines when flying from Key Largo to Madrid.

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

    On average you can expect to pay $1,969 for a flight from Key Largo to Madrid. The cheapest flight overall is $382 while the most popular route, (Miami - Madrid Barajas) is currently priced at $417.

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

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

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

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

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

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

    Currently, November is the cheapest month in which you can book a flight from Key Largo to Madrid (average of $543). Flying from Key Largo to Madrid in June is currently the most expensive (average of $1,107). 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 Key Largo?

Book flights to Key Largo if you plan to visit one of these locations
Segovia
Fuenlabrada

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Top 10 airlines flying from Key Largo to Madrid

Discover the top 10 airlines that operate flights from Key Largo to Madrid. 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 March 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$268Average$451FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$310Average$1,274FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$339Average$543FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$364Average$619FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$408Average$408FlexibilityNo cancel feeOn-time72%
Air EuropaCheapest$430Average$811FlexibilityNo cancel feeOn-time83%
FinnairCheapest$440Average$613FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$445Average$724FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$451Average$663FlexibilityNo cancel feeOn-time67%
SWISSCheapest$460Average$561FlexibilityNo cancel feeOn-time79%
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