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$255+ 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 3/11. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LIS
Mar 2 — Mar 91
Mon 3/2
Mon 3/9
1 adult, Economy
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Cheapflights Tip: The best prices from Key Largo to Lisbon Humberto Delgado are usually found in January or February, booked 40 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 January 31, 2026.

This eDestinos deal was found by Cheapflights users on 1/31. 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.
Mon 2/910:50 pm
MIA
-
LIS
1 stop15h 05m
Multiple Airlines
Wed 2/1811:05 am
LIS
-
MIA
1 stop15h 47m
Multiple Airlines
Deal found 1/31$441
This Mytrip deal was found by Cheapflights users on 1/29. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/84:40 pm
MIA
-
LIS
1 stop13h 55m
Lufthansa
Tue 2/176:10 am
LIS
-
MIA
1 stop15h 45m
Lufthansa
Deal found 1/29$442
This Kiwi.com deal was found by Cheapflights users on 1/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/34:40 pm
MIA
-
LIS
1 stop16h 55m
SWISS
Tue 3/103:25 pm
LIS
-
MIA
1 stop28h 15m
SWISS
Deal found 1/30$446
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/36:45 pm
MIA
-
LIS
1 stop23h 45m
Lufthansa
Tue 2/106:10 am
LIS
-
MIA
1 stop15h 45m
Lufthansa
Deal found 1/29$447
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:45 pm
MIA
-
LIS
1 stop13h 35m
Lufthansa
Wed 2/186:10 am
LIS
-
MIA
1 stop15h 45m
Lufthansa
Deal found 1/29$449
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/116:45 pm
MIA
-
LIS
1 stop13h 35m
Lufthansa
Tue 2/176:10 am
LIS
-
MIA
1 stop15h 45m
Lufthansa
Deal found 1/29$450
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/254:40 pm
MIA
-
LIS
1 stop14h 05m
SWISS
Wed 3/412:15 pm
LIS
-
MIA
1 stop31h 25m
SWISS
Deal found 1/29$454
This Kiwi.com deal was found by Cheapflights users on 1/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 2/96:45 pm
MIA
-
LIS
1 stop23h 45m
Lufthansa
Mon 2/162:10 pm
LIS
-
MIA
1 stop31h 45m
Lufthansa
Deal found 1/30$459
This Kiwi.com deal was found by Cheapflights users on 1/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/34:40 pm
MIA
-
LIS
1 stop16h 55m
Multiple Airlines
Tue 3/105:00 am
LIS
-
MIA
1 stop14h 40m
Multiple Airlines
Deal found 1/29$460

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 January 31, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$446
(Kiwi.com)

One-way from

$255
(Kiwi.com)

Popular in

June

Cheapest in

January

Average price

$550
Provider with most accurate pricing for Miami-Lisbon Humberto Delgado flight deals.
Search Deals
Provider most trusted by Cheapflights users for Miami-Lisbon Humberto Delgado flights.
Search Deals
From Key Largo to Lisbon Humberto Delgado
Search Deals
One-way flight from Key Largo to Lisbon Humberto Delgado
Search Deals
Highest demand for flights based on searches. 21% potential increase in price ($211 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($29 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 31, 2026.
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

Wed 3/4

6:35 pm-10:15 am

1 stop10h 40m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-3:40 pm

1 stop14h 40m

$486

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 4/29

10:40 pm-5:55 pm

1 stop14h 15m

Lisbon Humberto Delgado

Wed 5/6

6:35 am-3:25 pm

1 stop13h 50m

$491

MiamiLisbon

MIA - LIS

MIALIS

Miami

Mon 3/16

8:50 pm-2:35 pm

1 stop13h 45m

Lisbon Humberto Delgado

Mon 3/23

11:50 am-3:40 pm

1 stop31h 50m

$495

MiamiLisbon

MIA - LIS

MIALIS

Miami

Tue 2/17

6:45 pm-11:30 pm

1 stop23h 45m

Lisbon Humberto Delgado

Fri 2/27

6:10 am-4:55 pm

1 stop15h 45m

$495

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 4/29

7:40 am-8:00 am

1 stop19h 20m

Lisbon Humberto Delgado

Wed 5/6

5:00 am-6:55 pm

2 stops18h 55m

$498

MiamiLisbon

MIA - LIS

MIALIS

Miami

Tue 2/17

6:45 pm-1:20 pm

1 stop13h 35m

Lisbon Humberto Delgado

Tue 3/17

5:00 am-8:27 pm

2 stops19h 27m

$500

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 3/4

7:40 am-11:20 am

2 stops22h 40m

Lisbon Humberto Delgado

Tue 3/10

5:00 am-11:24 pm

2 stops22h 24m

$503

MiamiLisbon

MIA - LIS

MIALIS

Miami

Sun 2/8

9:45 pm-3:15 pm

1 stop12h 30m

Lisbon Humberto Delgado

Wed 2/11

11:35 am-7:30 pm

1 stop12h 55m

$506

MiamiLisbon

MIA - LIS

MIALIS

Miami

Mon 4/20

4:44 pm-2:55 pm

2 stops17h 11m

Lisbon Humberto Delgado

Tue 4/28

5:35 am-11:29 pm

2 stops22h 54m

$510

MiamiLisbon

MIA - LIS

MIALIS

Miami

Wed 4/29

1:16 pm-8:00 am

2 stops13h 44m

Lisbon Humberto Delgado

Wed 5/6

10:00 am-8:48 pm

2 stops15h 48m

$513

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/29

Showing 1-10 of 17 results
1
2

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 January 30, 2026.

Booking 40 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 $419). Flying from Key Largo to Lisbon in June is currently the most expensive (average of $651). 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 January 31, 2026.

When flying from Key Largo to Lisbon, 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 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 January 31, 2026.
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.
Delta
7.9
Good
8,130 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

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.
Delta
7.9
Good
8,130 reviews
Delta
7.9
Good
8,130 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

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.
JetBlue
7.2
Good
2,892 reviews
Delta
7.9
Good
8,130 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

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.
TAP AIR PORTUGAL
7.1
Good
2,131 reviews
Delta
7.9
Good
8,130 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

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.
Air Europa
6.9
Okay
586 reviews
Delta
7.9
Good
8,130 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

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.
British Airways
6.7
Okay
7,706 reviews
Delta
7.9
Good
8,130 reviews

Overall

7.9

Entertainment

7.8

Crew

8.5

Food

7.2

Boarding

8.1

Comfort

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 3 inbound flights from Key Largo per day. You should also have plenty of airline options to choose from since 18 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?

    Flights from Key Largo to Lisbon Humberto Delgado have been viewed 111 times in the past calendar month.

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

    United Airlines and SWISS can get you from Key Largo to Lisbon in just under 10h 40m. Your travel time can differ by up to 3h 05m. There are 4146 mi between Key Largo and Lisbon. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 $241 and $243 on Lufthansa and SWISS, 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 Etihad Airways (60%), JetBlue (52%) or Emirates (44%) 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 $1,499, our data shows the cheapest flight currently is $276. When looking at the most popular route, (Miami - Lisbon Humberto Delgado), you can expect to pay $386 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 $419). Flying from Key Largo to Lisbon in June is currently the most expensive (average of $651). 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
Beja
Costa da Caparica
Torres Vedras
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Alternative routes for Key Largo to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 31, 2026.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest$257Average$539FlexibilityNo cancel feeOn-time79%
FinnairCheapest$316Average$659FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$371Average$476FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$433Average$792FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$443Average$832FlexibilityNo cancel feeOn-time76%
Air EuropaCheapest$453Average$645FlexibilityNo cancel feeOn-time83%
IberiaCheapest$454Average$651FlexibilityNo cancel feeOn-time77%
KLMCheapest$462Average$711FlexibilityNo cancel feeOn-time75%
British AirwaysCheapest$477Average$742FlexibilityNo cancel feeOn-time70%
American AirlinesCheapest$498Average$798FlexibilityNo cancel feeOn-time71%

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