Lisbon

$253+ Cheap flights from Key Largo, FL to Lisbon (LIS)

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 3/14. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LIS
Jan 14 — Jan 211
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Key Largo to Lisbon Humberto Delgado are usually found in January or February, booked 45 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap flight deals from Key Largo to Lisbon

Cheapest flights from Key Largo to Lisbon
Explore the most affordable flight options available from Key Largo to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This eDestinos deal was found by Cheapflights users on 12/13. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/1410:05 pmMIA - LIS
1 stop14h 40mMultiple Airlines
Thu 12/256:35 amLIS - MIA
1 stop14h 40mMultiple Airlines
Deal found 12/13$481
This Finnair deal was found by Cheapflights users on 12/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/145:35 pmMIA - LIS
1 stop10h 30mMultiple Airlines
Tue 12/2311:05 amLIS - MIA
1 stop16h 59mMultiple Airlines
Deal found 12/13$528
This Finnair deal was found by Cheapflights users on 12/14. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/273:06 pmMIA - LIS
1 stop12h 59mMultiple Airlines
Fri 1/306:30 amLIS - MIA
1 stop19h 15mMultiple Airlines
Deal found 12/14$543
This Delta deal was found by Cheapflights users on 12/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:10 amMIA - LIS
1 stop15h 50mDelta
Fri 1/305:30 amLIS - MIA
2 stops18h 24mDelta
Deal found 12/14$552
This Virgin Atlantic deal was found by Cheapflights users on 12/14. 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 Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/277:07 amMIA - LIS
2 stops19h 53mVirgin Atlantic
Fri 1/3010:00 amLIS - MIA
2 stops19h 51mVirgin Atlantic
Deal found 12/14$560
This Booking.com deal was found by Cheapflights users on 12/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/312:25 pmMIA - LIS
1 stop12h 45mMultiple Airlines
Sun 1/113:25 pmLIS - MIA
1 stop28h 15mMultiple Airlines
Deal found 12/13$569
This Expedia deal was found by Cheapflights users on 12/13. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/134:40 pmMIA - LIS
1 stop14h 05mMultiple Airlines
Wed 12/1710:15 amLIS - MIA
1 stop14h 59mMultiple Airlines
Deal found 12/13$579
This oojo deal was found by Cheapflights users on 12/13. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/2410:25 pmMIA - LIS
1 stop30h 30mBritish Airways
Mon 1/123:50 pmLIS - MIA
1 stop27h 50mBritish Airways
Deal found 12/13$580
This Travelocity deal was found by Cheapflights users on 12/13. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/308:00 pmMIA - LIS
2 stops31h 55mMultiple Airlines
Sun 1/113:25 pmLIS - MIA
1 stop28h 15mMultiple Airlines
Deal found 12/13$587
This Finnair deal was found by Cheapflights users on 12/13. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/155:35 pmMIA - LIS
1 stop10h 30mMultiple Airlines
Wed 12/2411:05 amLIS - MIA
1 stop13h 00mMultiple Airlines
Deal found 12/13$590

Find flight deals from Key Largo to Lisbon

Keep the following information in mind while searching for Key Largo to Lisbon flight deals. Data was last updated December 15, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$461
(Kiwi.com)

One-way from

$253
(Booking.com)

Popular in

June

Cheapest in

January

Average price

$1,002
Provider with most accurate pricing for Miami-Lisbon Humberto Delgado flight deals.
Provider most trusted by Cheapflights users for Miami-Lisbon Humberto Delgado flights.
From Key Largo to Lisbon Humberto Delgado
One-way flight from Key Largo to Lisbon Humberto Delgado
Highest demand for flights based on searches. 19% potential increase in price ($196 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($28 potential savings vs. average RT price).
Average for round-trip flights in December 2025

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Lisbon 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 December 15, 2025.
Use the filters below to find and compare flights from Key Largo to Lisbon that are best for you.

Fly from

Key Largo

Fly to

Lisbon

Route

Depart

Return

Price

MiamiLisbon

MIA - LIS

MIALIS

Miami

Sun 1/18

7:15 am-8:10 am

1 stop19h 55m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-2:40 pm

1 stop14h 40m

$481

MiamiLisbon

MIA - LIS

MIALIS

Miami

Tue 1/13

9:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Tue 1/20

6:10 am-4:55 pm

1 stop15h 45m

$486

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 2/4

2:32 pm-8:10 am

1 stop12h 38m

Lisbon Humberto Delgado

Thu 2/12

6:10 am-4:55 pm

1 stop15h 45m

$486

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 1/21

1:45 pm-8:10 am

2 stops13h 25m

Lisbon Humberto Delgado

Wed 1/28

6:10 am-4:55 pm

1 stop15h 45m

$486

MiamiLisbon

MIA - LIS

MIALIS

Miami

Tue 1/20

1:45 pm-8:10 am

2 stops13h 25m

Lisbon Humberto Delgado

Tue 1/27

5:00 am-2:40 pm

1 stop14h 40m

$488

MiamiLisbon

MIA - LIS

MIALIS

Miami

Tue 2/10

7:50 am-11:20 am

2 stops22h 30m

Lisbon Humberto Delgado

Mon 2/16

11:25 am-2:50 pm

1 stop32h 25m

$491

MiamiLisbon

MIA - LIS

MIALIS

Miami

Mon 1/12

12:18 pm-8:10 am

2 stops14h 52m

Lisbon Humberto Delgado

Tue 1/20

11:20 am-4:34 pm

2 stops34h 14m

$491

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 2/18

6:45 pm-1:20 pm

1 stop13h 35m

Lisbon Humberto Delgado

Wed 3/25

5:00 am-8:27 pm

2 stops19h 27m

$497

MiamiLisbon

MIA - LIS

MIALIS

Miami

Tue 2/17

9:00 am-8:10 am

2 stops18h 10m

Lisbon Humberto Delgado

Fri 2/27

10:15 am-10:20 pm

2 stops17h 05m

$498

MiamiLisbon

MIA - LIS

MIALIS

Miami

Mon 2/9

1:45 pm-8:10 am

2 stops13h 25m

Lisbon Humberto Delgado

Tue 3/3

5:00 am-10:19 pm

2 stops22h 19m

$499

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 22 results
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Best time to book a flight from Key Largo to Lisbon

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

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Lisbon. Price data was last updated on December 12, 2025.

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo to Lisbon. 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 Lisbon?

Currently, January is the cheapest month in which you can book a flight from Key Largo to Lisbon (average of $420). Flying from Key Largo to Lisbon in June is currently the most expensive (average of $623). 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 LIS?

Find hourly flight availability from Key Largo to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

One of the essential ways to save on airfare from Key Largo to Lisbon is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 23% on airfare.

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

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

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

Weekly flight availability from Key Largo to Lisbon

Explore weekly flight availability from Key Largo to Lisbon. 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 December 15, 2025.

The most flights from KE9 to LIS are scheduled on a Wednesday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (3 on average).

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated December 15, 2025.
Read reviews from past customers who have flown Delta, JetBlue, and TAP AIR PORTUGAL from Key Largo to Lisbon. 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.

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

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.

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

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.

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

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.

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

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.

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

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.

Comfort

7.9

Crew

8.5

Boarding

8.1

Food

7.3

Overall

7.9

Entertainment

7.9

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 Lisbon. 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 Lisbon from Key Largo?

    Lisbon Humberto Delgado (LIS) is the airport you will fly into if you book a flight from Key Largo to Lisbon. You should not have trouble finding flights to Humberto Delgado from Key Largo; the airport handles an average of 4 inbound flights from Key Largo per day. You should also have plenty of airline options to choose from since 19 airlines have flights to the Lisbon airport from Key Largo. It is only a 4.2 mi journey from Humberto Delgado (LIS) to Lisbon’s city center.

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

  • How long is the flight from Key Largo to Lisbon?

    United Airlines can get you from Key Largo to Lisbon in just under 19h 55m. Your travel time can differ by up to . There are 4146 mi between Key Largo and Lisbon.

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

    For one-way options, check prices for Iberia. According to our data, you can fly for as low as $223. Users have also found prices from $246 and $251 on SWISS and American Airlines, respectively.

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

    No one likes to see their flight delayed. When booking a flight from Key Largo to Lisbon consider choosing Emirates (68%), JetBlue (65%) or TAP AIR PORTUGAL (65%) as they are the most reliable in getting you off to your destination on time.

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

    While on average a flight from Key Largo to Lisbon is generally $1,428, our data shows the cheapest flight currently is $251. When looking at the most popular route, (Miami - Lisbon Humberto Delgado), you can expect to pay $408 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Lisbon (average of $420). Flying from Key Largo to Lisbon in June is currently the most expensive (average of $623). 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 Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Fátima
Oeiras
Ericeira
Costa da Caparica
Torres Vedras
Beja
Nazaré
Sesimbra
Colares

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Top 10 airlines flying from Key Largo to Lisbon

Discover the top 10 airlines that operate flights from Key Largo to Lisbon. 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$287Average$595FlexibilityNo cancel feeOn-time79%
FinnairCheapest$370Average$659FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$371Average$458FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$439Average$795FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$443Average$750FlexibilityNo cancel feeOn-time76%
Air EuropaCheapest$452Average$618FlexibilityNo cancel feeOn-time83%
IberiaCheapest$456Average$679FlexibilityNo cancel feeOn-time77%
KLMCheapest$479Average$694FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$480Average$660FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$498Average$796FlexibilityNo cancel feeOn-time71%

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