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$341+ 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 7/26. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — MAD
May 4 — May 111
Sun 5/4
Sun 5/11
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 Tuesday

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 April 29, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$571
(Gurufare)

One-way from

$341
(Gurufare)

Popular in

June

Cheapest in

February

Average price

$626
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 ($233 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($32 potential savings vs. average RT price).
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Average for round-trip flights in April 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 April 29, 2025.

This United Airlines deal was found by Cheapflights users on 4/29. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/11:29 pmMIA - MAD
2 stops35h 11mUnited Airlines
Wed 5/712:45 pmMAD - MIA
2 stops32h 11mUnited Airlines
Deal found 4/29$580
This Mytrip deal was found by Cheapflights users on 4/28. 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.
Mon 5/127:55 amMIA - MAD
1 stop16h 45mMultiple Airlines
Tue 5/2010:05 amMAD - MIA
1 stop13h 25mMultiple Airlines
Deal found 4/28$582
This Delta deal was found by Cheapflights users on 4/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/73:24 pmMIA - MAD
2 stops18h 11mDelta
Sun 5/116:00 amMAD - MIA
2 stops18h 49mDelta
Deal found 4/29$583
This British Airways deal was found by Cheapflights users on 4/28. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2910:15 amMIA - MAD
1 stop13h 15mBritish Airways
Mon 5/1211:30 amMAD - MIA
Nonstop9h 55mBritish Airways
Deal found 4/28$587
This Air Canada deal was found by Cheapflights users on 4/28. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/127:55 amMIA - MAD
1 stop16h 45mAir Canada
Tue 5/206:00 amMAD - MIA
2 stops23h 23mAir Canada
Deal found 4/28$588
This Iberia deal was found by Cheapflights users on 4/29. 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.
Tue 6/36:25 pmMIA - MAD
1 stop13h 55mIberia
Mon 10/610:00 amMAD - MIA
Nonstop9h 30mIberia
Deal found 4/29$592
This Finnair deal was found by Cheapflights users on 4/29. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/295:10 pmMIA - MAD
1 stop14h 15mFinnair
Mon 5/194:20 pmMAD - MIA
1 stop13h 23mFinnair
Deal found 4/29$597
This American Airlines deal was found by Cheapflights users on 4/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/299:26 pmMIA - MAD
1 stop28h 29mAmerican Airlines
Mon 5/124:15 pmMAD - MIA
Nonstop10h 00mAmerican Airlines
Deal found 4/29$598
This Virgin Atlantic deal was found by Cheapflights users on 4/29. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/66:00 amMIA - MAD
2 stops19h 50mVirgin Atlantic
Wed 5/1412:40 pmMAD - MIA
2 stops17h 57mVirgin Atlantic
Deal found 4/29$602
This SWISS deal was found by Cheapflights users on 4/28. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/37:40 pmMIA - MAD
1 stop31h 40mSWISS
Wed 5/1410:05 amMAD - MIA
1 stop13h 25mSWISS
Deal found 4/28$615
This Gurufare deal was found by Cheapflights users on 4/29. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/159:30 pmMIA - MAD
Nonstop8h 35mAir Europa
Thu 10/233:25 pmMAD - MIA
Nonstop9h 20mAir Europa
Deal found 4/29$625
This ITA Airways deal was found by Cheapflights users on 4/28. 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 ITA Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/87:15 amMIA - MAD
2 stops21h 30mITA Airways
Fri 5/96:05 pmMAD - MIA
2 stops35h 14mITA Airways
Deal found 4/28$631

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 April 29, 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

Tue 5/6

4:08 pm-6:40 am

2 stops32h 32m

Madrid Barajas

Sun 5/11

12:45 pm-12:51 pm

2 stops30h 06m

$580

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 5/6

6:25 am-6:40 am

2 stops18h 15m

Madrid Barajas

Tue 9/16

6:00 am-7:26 pm

2 stops19h 26m

$581

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Mon 5/12

7:55 am-6:40 am

1 stop16h 45m

Madrid Barajas

Tue 5/20

10:05 am-5:30 pm

1 stop13h 25m

$582

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Wed 5/7

3:24 pm-3:35 pm

2 stops18h 11m

Madrid Barajas

Sun 5/11

6:00 am-6:49 pm

2 stops18h 49m

$583

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Wed 5/7

7:35 pm-5:05 pm

1 stop15h 30m

Madrid Barajas

Wed 5/14

11:30 am-3:25 pm

Nonstop9h 55m

$586

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 6/3

6:25 pm-2:20 pm

1 stop13h 55m

Madrid Barajas

Mon 10/6

10:00 am-1:30 pm

Nonstop9h 30m

$592

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Mon 5/5

2:11 pm-10:20 am

1 stop14h 09m

Madrid Barajas

Mon 5/12

12:25 pm-9:42 pm

1 stop15h 17m

$598

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 5/6

6:00 am-7:50 am

2 stops19h 50m

Madrid Barajas

Wed 5/14

12:40 pm-12:37 am

2 stops17h 57m

$602

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Thu 5/15

11:10 am-10:45 am

2 stops17h 35m

Madrid Barajas

Thu 5/22

5:55 am-4:00 pm

1 stop16h 05m

$609

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Sat 5/3

7:40 pm-9:20 am

1 stop31h 40m

Madrid Barajas

Sat 5/10

7:35 pm-5:30 pm

1 stop27h 55m

$615

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 28 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 April 25, 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 $1,086). 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 April 29, 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.

Weekly flight availability from Key Largo to Madrid

Explore weekly flight availability from Key Largo to Madrid. 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 April 29, 2025.

The most flights from KE9 to MAD are scheduled on a Monday (20 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (14 on average).

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 April 29, 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
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
7,929 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
1,334 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
1,275 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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.
SWISS
7.5
Good
1,588 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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
1,446 reviews
Delta
8.0
Very good
7,929 reviews

Comfort

7.9

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Food

7.3

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 17 daily inbound flights from Key Largo from 21 different airlines.

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

    Within the past month, 271 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 TAP AIR PORTUGAL, with whom users have recently found tickets for as low as $341. However, be on the lookout for offers from Air Europa and KLM, 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 (95%), SAUDIA (95%) or Etihad Airways (95%) 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 $1,536 for a flight from Key Largo to Madrid. The cheapest flight overall is $384 while the most popular route, (Miami - Madrid Barajas) is currently priced at $381.

  • 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 $1,086). 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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$268Average$435FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$310Average$1,274FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$337Average$535FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$364Average$634FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$408Average$612FlexibilityNo cancel feeOn-time72%
Air EuropaCheapest$429Average$807FlexibilityNo cancel feeOn-time83%
FinnairCheapest$440Average$600FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$445Average$724FlexibilityNo cancel feeOn-time81%
SWISSCheapest$446Average$548FlexibilityNo cancel feeOn-time79%
Air CanadaCheapest$451Average$595FlexibilityNo cancel feeOn-time67%

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