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$298+ 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 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — MAD
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 66 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 June 12, 2025.

Round-trip from

$566
(Delta)

One-way from

$298
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$974
From Key Largo to Madrid Barajas
Search Deals
One-way flight from Key Largo to Madrid Barajas
Search Deals
Highest demand for flights based on searches. 25% potential increase in price ($216 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($30 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 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 June 12, 2025.

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.
Wed 8/204:25 pmMIA - MAD
2 stops17h 10mDelta
Wed 9/310:05 amMAD - MIA
1 stop35h 15mDelta
Deal found 6/11$566
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.
Tue 9/304:55 pmMIA - MAD
Nonstop8h 50mBritish Airways
Sun 10/1210:00 amMAD - MIA
Nonstop9h 30mBritish Airways
Deal found 6/12$567
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/228:40 amMIA - MAD
2 stops17h 40mUnited Airlines
Sun 7/271:05 pmMAD - MIA
1 stop31h 35mUnited Airlines
Deal found 6/11$568
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/210:29 amMIA - MAD
1 stop13h 31mIberia
Mon 10/1310:00 amMAD - MIA
Nonstop9h 30mIberia
Deal found 6/11$571
This Air Canada 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/226:22 amMIA - MAD
2 stops18h 18mAir Canada
Tue 8/1912:45 pmMAD - MIA
2 stops16h 03mAir Canada
Deal found 6/11$573
This Scandinavian 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/57:30 pmMIA - MAD
2 stops38h 40mScandinavian Airlines
Wed 12/35:00 pmMAD - MIA
2 stops30h 50mScandinavian Airlines
Deal found 6/10$576
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.
Fri 9/194:55 pmMIA - MAD
Nonstop8h 50mFinnair
Sat 10/47:45 amMAD - MIA
1 stop15h 15mFinnair
Deal found 6/10$577
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/14:25 pmMIA - MAD
2 stops34h 40mMultiple Airlines
Sun 11/165:55 amMAD - MIA
1 stop14h 45mMultiple Airlines
Deal found 6/11$580
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/19:30 pmMIA - MAD
Nonstop8h 35mAir Europa
Sun 10/193:25 pmMAD - MIA
Nonstop9h 20mAir Europa
Deal found 6/12$591
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.
Fri 9/58:23 amMIA - MAD
1 stop15h 07mAmerican Airlines
Tue 9/2310:00 amMAD - MIA
Nonstop9h 15mAmerican Airlines
Deal found 6/11$592
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/512:35 amMIA - MAD
1 stop17h 45mTAP AIR PORTUGAL
Mon 10/279:10 pmMAD - MIA
1 stop23h 40mTAP AIR PORTUGAL
Deal found 6/11$617
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/134:40 pmMIA - MAD
1 stop13h 35mLufthansa
Mon 6/166:00 amMAD - MIA
1 stop14h 40mLufthansa
Deal found 6/11$629

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 June 12, 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

Wed 8/20

4:25 pm-3:35 pm

2 stops17h 10m

Madrid Barajas

Wed 9/3

10:05 am-3:20 pm

1 stop35h 15m

$566

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 9/30

4:55 pm-7:45 am

Nonstop8h 50m

Madrid Barajas

Sun 10/12

10:00 am-1:30 pm

Nonstop9h 30m

$567

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 7/22

8:40 am-8:20 am

2 stops17h 40m

Madrid Barajas

Sun 7/27

1:05 pm-2:40 pm

1 stop31h 35m

$568

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Thu 10/2

10:29 am-8:15 am

1 stop15h 46m

Madrid Barajas

Mon 10/13

10:00 am-1:30 pm

Nonstop9h 30m

$571

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Tue 7/22

7:45 am-6:40 am

2 stops16h 55m

Madrid Barajas

Tue 8/19

12:45 pm-10:48 pm

2 stops16h 03m

$573

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Wed 11/5

7:30 pm-4:10 pm

2 stops38h 40m

Madrid Barajas

Wed 12/3

5:00 pm-5:50 pm

2 stops30h 50m

$576

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Fri 9/19

4:55 pm-7:45 am

Nonstop8h 50m

Madrid Barajas

Sat 10/4

7:45 am-5:00 pm

1 stop15h 15m

$577

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Sat 11/1

4:25 pm-8:05 am

2 stops34h 40m

Madrid Barajas

Sun 11/16

5:55 am-2:40 pm

1 stop14h 45m

$580

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Wed 10/1

9:30 pm-12:05 pm

Nonstop8h 35m

Madrid Barajas

Sun 10/19

3:25 pm-6:45 pm

Nonstop9h 20m

$591

MiamiMadrid

MIA - MAD

MIAMAD

Miami

Fri 9/5

8:23 am-5:30 am

1 stop15h 07m

Madrid Barajas

Tue 9/23

10:00 am-1:15 pm

Nonstop9h 15m

$592

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Showing 1-10 of 27 results
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2
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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 June 9, 2025.

The best time to book flights from Key Largo to Madrid is 66 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 $1,057). 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 June 12, 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 Friday at noon 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 June 12, 2025.

The most flights from KE9 to MAD are scheduled on a Thursday (21 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (10 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 June 12, 2025.
See what other customers who have flown with Delta, Finnair and United Airlines 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
7,946 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.
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.
Virgin Atlantic
7.4
Good
652 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.
JetBlue
7.3
Good
2,925 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 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 16 daily inbound flights from Key Largo from 21 different airlines.

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

    Within the past month, 270 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 Air Europa, with whom users have recently found tickets for as low as $305. However, be on the lookout for offers from Royal Air Maroc and Vueling, 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 $1,806 for a flight from Key Largo to Madrid. The cheapest flight overall is $307 while the most popular route, (Miami - Madrid Barajas) is currently priced at $365.

  • 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 $1,057). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$268Average$289FlexibilityNo cancel feeOn-timeN/A
AviancaCheapest$310Average$1,274FlexibilityNo cancel feeOn-time71%
TAP AIR PORTUGALCheapest$337Average$541FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$364Average$642FlexibilityNo cancel feeOn-time75%
Virgin AtlanticCheapest$408Average$612FlexibilityNo cancel feeOn-time72%
Air EuropaCheapest$428Average$803FlexibilityNo cancel feeOn-time83%
FinnairCheapest$440Average$591FlexibilityNo cancel feeOn-time76%
ITA AirwaysCheapest$443Average$694FlexibilityNo cancel feeOn-time81%
SWISSCheapest$446Average$558FlexibilityNo cancel feeOn-time79%
Air CanadaCheapest$451Average$582FlexibilityNo cancel feeOn-time67%

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