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$291+ Cheap flights from Key Largo, FL to Portugal

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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — LIS
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
1 adult, Economy
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Cheap flight deals from Key Largo to Portugal

Keep the following information in mind while searching for Key Largo to Portugal flight deals. Data was last updated June 12, 2025.

Round-trip from

$528
(oojo)

One-way from

$291
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$1,085
From Key Largo to Portugal
Search Deals
One-way flight from Key Largo to Portugal
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Highest demand for flights based on searches. 19% potential increase in price ($189 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 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 Portugal

Cheapest flights from Key Largo to Portugal
Explore the most affordable flight options available from Key Largo to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 12, 2025.

This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/33:55 amMIA - PDL
1 stop15h 50mTAP AIR PORTUGAL
Wed 9/1010:45 amPDL - MIA
1 stop15h 05mTAP AIR PORTUGAL
Deal found 6/10$528
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/174:30 pmMIA - FNC
1 stop15h 55mTAP AIR PORTUGAL
Tue 9/235:50 amFNC - MIA
1 stop13h 55mTAP AIR PORTUGAL
Deal found 6/11$528
This Mytrip deal was found by Cheapflights users on 6/9. 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.
Tue 9/27:55 amMIA - FAO
2 stops30h 40mMultiple Airlines
Thu 9/117:40 pmFAO - MIA
2 stops30h 54mMultiple Airlines
Deal found 6/9$537
This oojo 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/1912:35 amMIA - FAO
1 stop11h 45mTAP AIR PORTUGAL
Sun 10/266:05 amFAO - MIA
1 stop21h 00mTAP AIR PORTUGAL
Deal found 6/11$548
This Air Europa 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 Europa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/249:30 pmMIA - OPO
1 stop12h 45mAir Europa
Fri 10/311:35 amOPO - MIA
1 stop12h 10mAir Europa
Deal found 6/11$591
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/82:57 pmMIA - OPO
2 stops39h 43mIberia
Wed 10/158:35 pmOPO - MIA
1 stop23h 30mIberia
Deal found 6/12$596
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/282:15 pmMIA - OPO
1 stop14h 20mAir Canada
Tue 8/1212:50 pmOPO - MIA
2 stops27h 10mAir Canada
Deal found 6/10$599
This Cheapflightsfares 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/2111:35 pmMIA - OPO
1 stop11h 20mTAP AIR PORTUGAL
Wed 11/2612:00 pmOPO - MIA
1 stop14h 50mTAP AIR PORTUGAL
Deal found 6/12$601
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 9/24:50 pmMIA - OPO
1 stop11h 55mUnited Airlines
Tue 9/912:50 pmOPO - MIA
2 stops31h 22mUnited Airlines
Deal found 6/11$604
This United 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/286:22 amMIA - OPO
1 stop22h 23mMultiple Airlines
Tue 8/1212:50 pmOPO - MIA
1 stop29h 21mMultiple Airlines
Deal found 6/10$608
This Mytrip 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/41:07 pmMIA - PDL
2 stops20h 28mMultiple Airlines
Wed 9/1010:45 amPDL - MIA
2 stops29h 27mMultiple Airlines
Deal found 6/10$611
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 9/26:20 pmMIA - PDL
1 stop10h 20mUnited Airlines
Wed 9/1011:00 amPDL - MIA
1 stop12h 26mUnited Airlines
Deal found 6/11$620

Cheapflights Fare Finder

Customize your flight search to find flights from Key Largo to Portugal 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 Portugal that are best for you.

Fly from

Key Largo

Fly to

Portugal

Route

Depart

Return

Price

MiamiPonta Delgada

MIA - PDL

MIAPDL

Miami

Wed 9/3

3:55 am-11:45 pm

1 stop15h 50m

Ponta Delgada Nordela

Wed 9/10

10:45 am-9:50 pm

1 stop15h 05m

$528

MiamiFunchal

MIA - FNC

MIAFNC

Miami

Wed 9/17

4:30 pm-1:25 pm

1 stop15h 55m

Funchal Madeira

Tue 9/23

5:50 am-2:45 pm

1 stop13h 55m

$528

MiamiFaro

MIA - FAO

MIAFAO

Miami

Tue 9/2

7:55 am-7:35 pm

2 stops30h 40m

Faro

Thu 9/11

7:40 pm-9:34 pm

2 stops30h 54m

$537

MiamiFaro

MIA - FAO

MIAFAO

Miami

Sun 10/19

12:35 am-5:20 pm

1 stop11h 45m

Faro

Sun 10/26

6:05 am-11:05 pm

1 stop21h 00m

$548

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 8/7

9:30 pm-6:50 am

1 stop28h 20m

Porto

Sat 8/23

8:10 pm-6:45 pm

1 stop27h 35m

$592

MiamiPorto

MIA - OPO

MIAOPO

Miami

Mon 7/28

2:15 pm-9:35 am

1 stop14h 20m

Porto

Tue 8/12

12:50 pm-11:00 am

2 stops27h 10m

$599

MiamiPorto

MIA - OPO

MIAOPO

Miami

Tue 9/2

4:50 pm-9:45 am

1 stop11h 55m

Porto

Tue 9/9

12:50 pm-3:12 pm

2 stops31h 22m

$604

MiamiPorto

MIA - OPO

MIAOPO

Miami

Mon 7/28

6:22 am-9:45 am

1 stop22h 23m

Porto

Tue 8/12

12:50 pm-1:11 pm

1 stop29h 21m

$608

MiamiPonta Delgada

MIA - PDL

MIAPDL

Miami

Thu 9/4

1:07 pm-1:35 pm

2 stops20h 28m

Ponta Delgada Nordela

Wed 9/10

10:45 am-12:12 pm

2 stops29h 27m

$611

MiamiPonta Delgada

MIA - PDL

MIAPDL

Miami

Tue 9/2

6:20 pm-8:40 am

1 stop10h 20m

Ponta Delgada Nordela

Wed 9/10

11:00 am-7:26 pm

1 stop12h 26m

$620

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 60 results
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Best time to book a flight from Key Largo to Portugal

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

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

Currently, January is the cheapest month in which you can book a flight from Key Largo to Portugal (average of $612). Flying from Key Largo to Portugal in June is currently the most expensive (average of $1,136). 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 PT?

Find hourly flight availability from Key Largo to Portugal. 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 Portugal, 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 Portugal?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Portugal. Price data was last updated on June 30, 2024.

Travelers seeking maximum savings on their Key Largo to Portugal flight should consider departing on Wednesday evenings 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.

Rainfall in Portugal by month

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

In terms of precipitation, rainfall in Portugal ranges from 0.2 - 4.8 inches per month. December is typically the wettest month, when rainfall can reach 4.8 in. July is typically the driest time to visit Portugal when rainfall is around 0.2 in.

Temperature in Portugal by month

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

If weather is an important factor for your trip to Portugal, 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 73.4 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated June 12, 2025.
To help decide which airline to fly from Key Largo to Portugal, see what other customers have to say about Delta, KLM and Air France. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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.
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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.
Air France
7.5
Good
1,463 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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.
SWISS
7.5
Good
1,623 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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
7,950 reviews

Food

7.3

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

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 Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Within the past month, 110 users have taken a look at flights from Key Largo to Portugal.

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

    The cheapest airlines for a one-way flight from Key Largo to Portugal are TAP AIR PORTUGAL ($309), British Airways ($332), and Delta ($333).

  • What are the most popular routes from Key Largo to Portugal?

    Most travelers choose Miami - Lisbon Humberto Delgado, Miami - Porto or Miami - Funchal Madeira when deciding on the best route from Key Largo to Portugal.

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

    Before booking your flight to Portugal from Key Largo, check out the most reliable airlines to get you to your destination on time: Emirates (85%), JetBlue (64%), TAP AIR PORTUGAL( 63%).

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

    The cheapest flight price from Key Largo to Portugal is $244. On average you can expect to pay $2,454. The most popular route, (Miami - Lisbon Humberto Delgado), can usually be booked for $458.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Portugal (average of $612). Flying from Key Largo to Portugal in June is currently the most expensive (average of $1,136). 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 Portugal

Discover the top 10 airlines that operate flights from Key Largo to Portugal. 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
Turkish AirlinesCheapest$322Average$739FlexibilityNo cancel feeOn-time77%
FinnairCheapest$370Average$673FlexibilityNo cancel feeOn-time76%
SWISSCheapest$377Average$567FlexibilityNo cancel feeOn-time79%
IberiaCheapest$429Average$727FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$455Average$849FlexibilityNo cancel feeOn-timeN/A
Air EuropaCheapest$455Average$686FlexibilityNo cancel feeOn-time83%
Air CanadaCheapest$477Average$841FlexibilityNo cancel feeOn-time67%
LufthansaCheapest$494Average$730FlexibilityNo cancel feeOn-time76%
American AirlinesCheapest$503Average$765FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$512Average$740FlexibilityNo cancel feeOn-time70%

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