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Heidelberg

$282+ Cheap flights from Key Largo, FL to Heidelberg, Germany

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 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — FRA
Apr 8 — Apr 151
Tue 4/8
Tue 4/15
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Heidelberg are usually found in January or February, booked 18 days in advance, depart on a Tuesday or Monday and return on a Tuesday

Cheap flight deals from Key Largo to Heidelberg

Keep the following information in mind while searching for Key Largo to Heidelberg flight deals. Data was last updated April 3, 2025.

Round-trip from

$580
(CheapOair)

One-way from

$282
(Kiwi.com)

Popular in

May

Cheapest in

January

Average price

$779
From Key Largo to Heidelberg
Search Deals
One-way flight from Key Largo to Heidelberg
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($123 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($18 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 Heidelberg

Cheapest flights from Key Largo to Heidelberg
Explore the most affordable flight options available from Key Largo to Heidelberg. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 3, 2025.

This Condor deal was found by Cheapflights users on 4/2. 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 Condor is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/810:10 pmMIA - FRA
Nonstop9h 30mMultiple Airlines
Mon 5/511:40 amFRA - MIA
1 stop14h 18mMultiple Airlines
Deal found 4/2$570
This Expedia deal was found by Cheapflights users on 4/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/810:10 pmMIA - FRA
Nonstop9h 30mCondor
Mon 5/53:15 pmFRA - MIA
Nonstop10h 40mCondor
Deal found 4/2$590
This oojo deal was found by Cheapflights users on 4/2. 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.
Sun 11/29:45 pmMIA - FRA
1 stop30h 00mAir Europa
Sun 11/1610:45 amFRA - MIA
1 stop14h 40mAir Europa
Deal found 4/2$650
This FlightHub deal was found by Cheapflights users on 4/2. 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.
Wed 10/298:45 pmMIA - FRA
2 stops18h 00mScandinavian Airlines
Tue 11/113:20 pmFRA - MIA
1 stop32h 35mScandinavian Airlines
Deal found 4/2$651
This Booking.com deal was found by Cheapflights users on 4/2. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/122:15 pmMIA - FRA
2 stops34h 15mAir Canada
Mon 5/269:55 amFRA - MIA
1 stop33h 23mAir Canada
Deal found 4/2$675
This Gotogate deal was found by Cheapflights users on 4/2. 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.
Sun 10/1912:35 amMIA - FRA
1 stop30h 05mTAP AIR PORTUGAL
Fri 10/316:00 amFRA - MIA
1 stop14h 50mTAP AIR PORTUGAL
Deal found 4/2$687
This oojo deal was found by Cheapflights users on 4/2. 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 - FRA
1 stop15h 30mITA Airways
Wed 11/127:00 amFRA - MIA
1 stop15h 15mITA Airways
Deal found 4/2$764
This Cheapflightsfares deal was found by Cheapflights users on 4/2. 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.
Thu 10/211:30 amMIA - FRA
1 stop13h 50mIberia
Thu 10/166:30 amFRA - MIA
1 stop19h 25mIberia
Deal found 4/2$776
This United Airlines deal was found by Cheapflights users on 4/3. 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 4/247:00 amMIA - FRA
1 stop20h 55mUnited Airlines
Thu 5/89:55 amFRA - MIA
2 stops35h 01mUnited Airlines
Deal found 4/3$789
This Lufthansa deal was found by Cheapflights users on 4/2. 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.
Thu 4/104:40 pmMIA - FRA
Nonstop9h 15mLufthansa
Thu 5/810:45 amFRA - MIA
Nonstop9h 55mLufthansa
Deal found 4/2$797
This deal was found by Cheapflights users on 4/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/171:50 pmMIA - FRA
1 stop13h 05mDelta
Tue 5/1311:50 amFRA - MIA
1 stop17h 29mDelta
Deal found 4/2$812
This Virgin Atlantic deal was found by Cheapflights users on 4/2. 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.
Sat 5/177:15 amMIA - FRA
1 stop19h 25mVirgin Atlantic
Sat 5/2411:00 amFRA - MIA
2 stops18h 04mVirgin Atlantic
Deal found 4/2$816

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo to Heidelberg 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 3, 2025.
Use the filters below to find and compare flights from Key Largo to Heidelberg that are best for you.

Fly from

Key Largo

Fly to

Heidelberg

Route

Depart

Return

Price

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Sat 5/17

8:05 pm-11:35 am

Nonstop9h 30m

Frankfurt am Main

Sat 5/31

1:15 pm-5:55 pm

Nonstop10h 40m

$580

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Fri 5/9

6:00 am-5:15 am

1 stop17h 15m

Frankfurt am Main

Tue 5/27

3:30 pm-8:10 pm

Nonstop10h 40m

$600

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Mon 5/12

2:15 pm-6:30 am

2 stops34h 15m

Frankfurt am Main

Mon 5/26

9:55 am-1:18 pm

1 stop33h 23m

$675

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Wed 7/30

3:55 am-6:50 pm

1 stop32h 55m

Frankfurt am Main

Tue 8/19

7:40 pm-2:45 pm

1 stop25h 05m

$754

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Thu 4/24

7:00 am-9:55 am

1 stop20h 55m

Frankfurt am Main

Thu 5/8

9:55 am-2:56 pm

2 stops35h 01m

$789

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Wed 8/20

10:15 pm-6:10 am

1 stop25h 55m

Frankfurt am Main

Wed 9/10

3:05 pm-8:20 pm

1 stop35h 15m

$792

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Tue 9/9

4:40 pm-7:55 am

Nonstop9h 15m

Frankfurt am Main

Tue 9/30

10:45 am-2:40 pm

Nonstop9h 55m

$797

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Thu 4/17

1:50 pm-8:55 am

1 stop13h 05m

Frankfurt am Main

Tue 5/13

11:50 am-11:19 pm

1 stop17h 29m

$812

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Sat 5/17

11:10 am-8:40 am

1 stop15h 30m

Frankfurt am Main

Sat 5/24

11:00 am-11:04 pm

2 stops18h 04m

$816

MiamiFrankfurt am Main

MIA - FRA

MIAFRA

Miami

Sat 5/17

5:15 pm-10:40 pm

1 stop23h 25m

Frankfurt am Main

Sat 5/31

6:40 am-2:30 pm

1 stop13h 50m

$824

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/2

Showing 1-10 of 28 results
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Best time to book a flight from Key Largo to Heidelberg

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Heidelberg. Price data was last updated on March 28, 2025.

Booking 18 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to Heidelberg. 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 Heidelberg?

Currently, January is the cheapest month in which you can book a flight from Key Largo to Heidelberg (average of $729). Flying from Key Largo to Heidelberg in June is currently the most expensive (average of $1,079). 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 HE1?

Find hourly flight availability from Key Largo to Heidelberg. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 3, 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 Heidelberg as you normally would.

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

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

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

Weekly flight availability from Key Largo to Heidelberg

Explore weekly flight availability from Key Largo to Heidelberg. 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 3, 2025.

The most flights from KE9 to HE1 are scheduled on a Tuesday (5 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Heidelberg by month

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

In terms of precipitation, rainfall in Heidelberg ranges from 1.6 - 2.8 inches per month. June is typically the wettest month, when rainfall can reach 2.8 in. January is typically the driest time to visit Heidelberg when rainfall is around 1.6 in.

Temperature in Heidelberg by month

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

If weather is an important factor for your trip to Heidelberg, 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 64.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 33.8 F).

Reviews of airlines servicing Heidelberg

Get insights into the airlines that provide service to Heidelberg. 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 Heidelberg. Reviews last updated April 3, 2025.
To help decide which airline to fly from Key Largo to Heidelberg, see what other customers have to say about Delta, SWISS and United Airlines. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,897 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
7,897 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
1,574 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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
8,619 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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.
Virgin Atlantic
7.4
Good
637 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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.
Scandinavian Airlines
7.3
Good
1,328 reviews
Delta
8.0
Very good
7,897 reviews

Food

7.3

Boarding

8.2

Overall

8.0

Entertainment

7.9

Crew

8.5

Comfort

7.9

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 Heidelberg. 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 Heidelberg one-way?

    For one-way options, check prices for Condor. According to our data, you can fly for as low as $284. Users have also found prices from $306 and $398 on TAP AIR PORTUGAL and Air Europa, respectively.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Key Largo to Heidelberg on time: Thai Airways (75%), Condor (72%), Austrian Airlines (60%).

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

    On average you can expect to pay $3,079 for a flight from Key Largo to Heidelberg. The cheapest flight overall is $310 while the most popular route, (Miami - Frankfurt am Main) is currently priced at $501.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Heidelberg (average of $729). Flying from Key Largo to Heidelberg in June is currently the most expensive (average of $1,079). 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.

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Top 10 airlines flying from Key Largo to Heidelberg

Discover the top 10 airlines that operate flights from Key Largo to Heidelberg. 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 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
CondorCheapest$492Average$755FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$574Average$818FlexibilityNo cancel feeOn-timeN/A
Air EuropaCheapest$578Average$724FlexibilityNo cancel feeOn-time83%
DeltaCheapest$618Average$927FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$618Average$823FlexibilityNo cancel feeOn-time70%
LufthansaCheapest$627Average$1,168FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$631Average$847FlexibilityNo cancel feeOn-time71%
SWISSCheapest$712Average$980FlexibilityNo cancel feeOn-time79%
IberiaCheapest$714Average$811FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$721Average$898FlexibilityNo cancel feeOn-time67%

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