HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Luxembourg

$416+ Cheap flights from Key Largo, FL to Luxembourg

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 8/21. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LUX
ago. 19 — ago. 261
mar. 8/19
mar. 8/26
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Key Largo to Luxembourg with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Key Largo to Luxembourg

Keep the following information in mind while searching for Key Largo to Luxembourg flight deals. Data was last updated agosto 14, 2025.

Round-trip from

$591
(American Airlines)

One-way from

$416
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$655
From Key Largo to Luxembourg
Search Deals
One-way flight from Key Largo to Luxembourg
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($191 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Key Largo to Luxembourg

Cheapest flights from Key Largo to Luxembourg
Explore the most affordable flight options available from Key Largo to Luxembourg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on agosto 14, 2025.

This American Airlines deal was found by Cheapflights users on 8/14. 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.
vie. 10/315:01 pmMIA - LUX
2 stops17h 14mAmerican Airlines
lun. 11/109:55 pmLUX - MIA
1 stop24h 25mAmerican Airlines
Deal found 8/14$591
This Gotogate deal was found by Cheapflights users on 8/13. 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.
lun. 10/64:35 pmMIA - LUX
1 stop18h 20mTAP AIR PORTUGAL
mar. 10/215:45 pmLUX - MIA
1 stop27h 00mTAP AIR PORTUGAL
Deal found 8/13$603
This Mytrip deal was found by Cheapflights users on 8/13. 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.
lun. 10/64:35 pmMIA - LUX
2 stops20h 20mMultiple Airlines
mar. 10/212:55 pmLUX - MIA
2 stops29h 50mMultiple Airlines
Deal found 8/13$608
This Cheapflightsfares deal was found by Cheapflights users on 8/14. 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.
vie. 10/315:40 pmMIA - LUX
1 stop11h 20mMultiple Airlines
lun. 11/108:10 amLUX - MIA
1 stop12h 30mMultiple Airlines
Deal found 8/14$632
This American Airlines deal was found by Cheapflights users on 8/13. 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.
mié. 9/108:45 pmMIA - LUX
1 stop17h 35mAmerican Airlines
mié. 9/179:35 pmLUX - MIA
1 stop25h 25mAmerican Airlines
Deal found 8/13$657
This FlightHub deal was found by Cheapflights users on 8/14. 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.
jue. 10/3012:15 amMIA - LUX
2 stops30h 05mITA Airways
lun. 11/101:45 pmLUX - MIA
2 stops32h 30mITA Airways
Deal found 8/14$747

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Luxembourg 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 agosto 14, 2025.
Use the filters below to find and compare flights from Key Largo to Luxembourg that are best for you.

Fly from

Key Largo

Fly to

Luxembourg

Route

Depart

Return

Price

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

vie. 10/31

5:01 pm-3:15 pm

2 stops17h 14m

Luxembourg

lun. 11/10

9:55 pm-4:20 pm

1 stop24h 25m

$591

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

lun. 10/6

4:35 pm-4:55 pm

1 stop18h 20m

Luxembourg

mar. 10/21

5:45 pm-2:45 pm

1 stop27h 00m

$603

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

lun. 10/6

4:35 pm-6:55 pm

2 stops20h 20m

Luxembourg

mar. 10/21

2:55 pm-2:45 pm

2 stops29h 50m

$608

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

vie. 10/31

5:40 pm-10:00 am

1 stop11h 20m

Luxembourg

lun. 11/10

8:10 am-2:40 pm

1 stop12h 30m

$632

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

mié. 9/10

8:45 pm-8:20 pm

1 stop17h 35m

Luxembourg

mié. 9/17

9:35 pm-5:00 pm

1 stop25h 25m

$657

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

jue. 10/30

12:15 am-11:20 am

2 stops30h 05m

Luxembourg

lun. 11/10

1:45 pm-4:15 pm

2 stops32h 30m

$747

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

jue. 8/21

5:20 pm-9:45 pm

1 stop22h 25m

$416

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

mié. 8/20

5:15 pm-9:05 pm

1 stop21h 50m

$416

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

sáb. 8/23

8:00 am-6:35 pm

3 stops52h 35m

$466

MiamiLuxembourg

MIA - LUX

MIALUX

Miami

vie. 8/22

5:15 pm-3:15 pm

1 stop16h 00m

$470

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 12 results
1
2

Best time to book a flight from Key Largo to Luxembourg

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

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

Currently, February is the cheapest month in which you can book a flight from Key Largo to Luxembourg (average of $638). Flying from Key Largo to Luxembourg in June is currently the most expensive (average of $1,173). 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 LU?

Find hourly flight availability from Key Largo to Luxembourg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated agosto 14, 2025.

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

Reviews of airlines servicing Luxembourg

Get insights into the airlines that provide service to Luxembourg. 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 Luxembourg. Reviews last updated agosto 14, 2025.
Get a feel of what it's like to fly with SWISS, TAP AIR PORTUGAL, and Lufthansa from Key Largo to Luxembourg by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
SWISS
7.6
Good
1,699 reviews

Crew

8.2

Comfort

7.4

Overall

7.6

Entertainment

6.8

Boarding

7.7

Food

7.1

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
SWISS
7.6
Good
1,699 reviews
SWISS
7.6
Good
1,699 reviews

Crew

8.2

Comfort

7.4

Overall

7.6

Entertainment

6.8

Boarding

7.7

Food

7.1

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
TAP AIR PORTUGAL
7.1
Good
1,948 reviews
SWISS
7.6
Good
1,699 reviews

Crew

8.2

Comfort

7.4

Overall

7.6

Entertainment

6.8

Boarding

7.7

Food

7.1

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.
Lufthansa
6.8
Okay
7,317 reviews
SWISS
7.6
Good
1,699 reviews

Crew

8.2

Comfort

7.4

Overall

7.6

Entertainment

6.8

Boarding

7.7

Food

7.1

Reviews

1 / 20
6.0
Good

Yvette,Nov 2024

BOS - ZRH

Food was not very good and the options were poor. The seat wasn't very comfortable. I would not choose to fly on this airline again. Their website was also difficult to navigate.

Related info for your journey

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

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Luxembourg (average of $638). Flying from Key Largo to Luxembourg in June is currently the most expensive (average of $1,173). 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.

Alternative routes for Key Largo to Luxembourg

See prices for flight routes from nearby airports that may be better suited for you.
Miami to Madrid flights
Miami to Heathrow flights
Miami to Barcelona-El Prat flights
Orlando to Heathrow flights
Miami to Leonardo da Vinci/Fiumicino flights
Miami to Charles de Gaulle flights
Miami to Istanbul flights
Miami to Lisbon flights
Orlando to Gatwick flights
Tampa to Heathrow flights
Orlando to Frankfurt flights
Miami to London City flights
Miami to Gatwick flights
Orlando to Charles de Gaulle flights
Orlando to London City flights
Miami to Frankfurt flights
Miami to Orly flights
Orlando to Madrid flights
Fort Lauderdale to Madrid flights
Orlando to Dublin flights
Tampa to Frankfurt flights
Miami to Stansted flights
Miami to Zurich flights
Orlando to Leonardo da Vinci/Fiumicino flights
Miami to Athens flights
Miami to Luton flights
Tampa to Leonardo da Vinci/Fiumicino flights
Miami to Sabiha Gokcen flights
Miami to Linate flights
Tampa to Gatwick flights
Orlando to Orly flights
Miami to Malpensa flights
Tampa to Dublin flights
Fort Lauderdale to Charles de Gaulle flights
Tampa to Madrid flights
Miami to Munich flights
Tampa to Athens flights
Tampa to Amsterdam flights
Jacksonville to Heathrow flights
Orlando to Keflavik Intl flights
Miami to Beauvais-Tille flights
Orlando to Barcelona-El Prat flights
Fort Lauderdale to Heathrow flights
Orlando to Malpensa flights
Fort Lauderdale to Barcelona-El Prat flights
Orlando to Stansted flights
Jacksonville to Gatwick flights
Miami to Dublin flights
Tampa to London City flights
Orlando to Linate flights

Top 3 airlines flying from Key Largo to Luxembourg

Discover the top 3 airlines that operate flights from Key Largo to Luxembourg. 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 agosto 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$472Average$685FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$490Average$816FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$606Average$744FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.