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$266+ Cheap flights from Key Largo, FL to Porto (OPO)

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — OPO
Nov 9 — Nov 161
Sat 11/9
Sat 11/16
1 adult, Economy
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The best prices from Key Largo to Porto are usually found in January or February, booked 14 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Key Largo to Porto

Discover tips and strategies to find the most affordable flight options for your journey from Key Largo (KE9) to Porto (OPO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated November 4, 2024.

Popular in

June

Cheapest in

January

Round-trip from

$455
(Mytrip)

One-way from

$266
(eDestinos)
High demand for flights, 30% potential price rise
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Best time to find cheap flights, 28% potential price drop
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From Key Largo to Porto
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One-way flight from Key Largo to Porto
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Find flight deals from Key Largo to Porto

Cheapest flights from Key Largo to Porto
Explore the most affordable flight options available from Key Largo to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 4, 2024.

This Booking.com deal was found by Cheapflights users on 11/4. 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.
Thu 11/288:00 amMIA - OPO
2 stops22h 35mAir Canada
Wed 12/116:00 amOPO - MIA
2 stops20h 37mAir Canada
Deal found 11/4$482
This TAP AIR PORTUGAL deal was found by Cheapflights users on 11/4. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/411:30 pmMIA - OPO
1 stop10h 35mTAP AIR PORTUGAL
Sun 12/82:50 pmOPO - MIA
1 stop12h 10mTAP AIR PORTUGAL
Deal found 11/4$489
This Booking.com deal was found by Cheapflights users on 11/4. 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.
Thu 11/284:35 pmMIA - OPO
2 stops17h 35mMultiple Airlines
Wed 12/117:25 pmOPO - MIA
1 stop24h 15mMultiple Airlines
Deal found 11/4$504
This oojo deal was found by Cheapflights users on 11/3. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/1210:40 pmMIA - OPO
1 stop15h 40mAir Europa
Sun 11/174:05 pmOPO - MIA
1 stop32h 20mAir Europa
Deal found 11/3$517
This SWISS deal was found by Cheapflights users on 11/4. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/287:50 pmMIA - OPO
1 stop34h 20mSWISS
Wed 12/117:25 pmOPO - MIA
1 stop27h 05mSWISS
Deal found 11/4$522
This American Airlines deal was found by Cheapflights users on 11/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/15:20 pmMIA - OPO
1 stop13h 25mAmerican Airlines
Sun 12/88:20 amOPO - MIA
2 stops17h 30mAmerican Airlines
Deal found 11/3$525
This United Airlines deal was found by Cheapflights users on 11/4. 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 11/284:45 pmMIA - OPO
1 stop13h 50mUnited Airlines
Wed 12/116:00 amOPO - MIA
2 stops18h 08mUnited Airlines
Deal found 11/4$530
This Delta deal was found by Cheapflights users on 11/4. 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.
Thu 12/57:50 pmMIA - OPO
1 stop34h 00mDelta
Thu 12/1211:45 amOPO - MIA
2 stops27h 37mDelta
Deal found 11/4$541
This Lufthansa deal was found by Cheapflights users on 11/3. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/86:45 pmMIA - OPO
1 stop13h 05mLufthansa
Mon 11/114:25 pmOPO - MIA
1 stop27h 10mLufthansa
Deal found 11/3$596
This Air France deal was found by Cheapflights users on 11/4. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/154:25 pmMIA - OPO
1 stop18h 00mKLM
Tue 12/106:00 amOPO - MIA
2 stops20h 24mKLM
Deal found 11/4$630
This Iberia deal was found by Cheapflights users on 11/4. 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 12/410:15 pmMIA - OPO
1 stop12h 45mIberia
Sat 12/78:20 amOPO - MIA
2 stops16h 54mIberia
Deal found 11/4$647
This KAYAK deal was found by Cheapflights users on 11/4. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/910:45 pmMIA - OPO
2 stops32h 00mBritish Airways
Fri 12/138:20 amOPO - MIA
2 stops18h 20mBritish Airways
Deal found 11/4$679

Find flights from Key Largo to Porto within your budget

Customize your flight search to find flights from Key Largo to Porto 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 2,455,398 searches. Data last updated November 4, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

MiamiPorto

MIA - OPO

MIAOPO

Miami

Mon 1/13

7:00 pm-12:05 pm

1 stop36h 05m

$266

MiamiPorto

MIA - OPO

MIAOPO

Miami

Sun 11/10

9:45 pm-6:50 am

1 stop28h 05m

$333

MiamiPorto

MIA - OPO

MIAOPO

Miami

Sat 12/28

4:30 pm-9:50 am

1 stop12h 20m

$378

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 4/24

11:30 am-7:35 am

2 stops15h 05m

$479

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 4/24

5:03 pm-3:45 pm

3 stops41h 42m

$685

MiamiPorto

MIA - OPO

MIAOPO

Miami

Tue 12/10

10:05 pm-5:40 pm

1 stop14h 35m

$2,351

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 4/3

7:45 pm-5:20 pm

1 stop16h 35m

$7,969

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 11/28

8:00 am-11:35 am

2 stops22h 35m

Porto

Wed 12/11

6:00 am-9:37 pm

2 stops20h 37m

$482

MiamiPorto

MIA - OPO

MIAOPO

Miami

Thu 2/27

9:45 pm-7:20 pm

1 stop16h 35m

Porto

Thu 3/13

11:35 am-8:25 pm

1 stop12h 50m

$483

MiamiPorto

MIA - OPO

MIAOPO

Miami

Wed 12/4

11:30 pm-3:05 pm

1 stop10h 35m

Porto

Tue 12/10

6:55 am-2:45 pm

1 stop12h 50m

$489

Flights are sorted by cheapest first

Deals found on 11/3

Showing 1-10 of 21 results
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2
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Best time to book a flight from Key Largo to Porto

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

Travel insights for flights from Key Largo to Porto

Get recent, data-driven insights about flights from Key Largo to Porto including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Key Largo to Porto. Price data was last updated on November 1, 2024.

The price you pay for your flight from Key Largo to Porto may vary depending on when you book. For the best chance of a lower fare, look to book 14 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

Find deals

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

Currently, January is the cheapest month in which you can book a flight from Key Largo to Porto (average of $517). Flying from Key Largo to Porto in June is currently the most expensive (average of $993). 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 OPO?

Find hourly flight availability from Key Largo to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 4, 2024.

When flying from Key Largo to Porto, 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 Porto?

Use this chart to determine the cheapest time to fly round-trip from Key Largo to Porto. Price data was last updated on November 3, 2024.

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

Find deals

Rainfall in Porto by month

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

In terms of precipitation, rainfall in Porto ranges from 0.7 - 7.7 inches per month. December is typically the wettest month, when rainfall can reach 7.7 in. July is typically the driest time to visit Porto when rainfall is around 0.7 in.

Temperature in Porto by month

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

If weather is an important factor for your trip to Porto, 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 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Porto

Get insights into the airlines that provide service to Porto. 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 Porto. Reviews last updated November 4, 2024.
Read through reviews of airlines operating flights from Key Largo to Porto, such as TAP AIR PORTUGAL, Air Canada and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

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
8,829 reviews
Delta
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

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.

KLM
7.8
Good
1,350 reviews
Delta
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

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
7.6
Good
1,646 reviews
Delta
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

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.

Air France
7.4
Good
1,532 reviews
Delta
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

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
9,226 reviews
Delta
8.0
Very good
8,829 reviews

Crew

8.5

Comfort

7.9

Boarding

8.2

Entertainment

7.9

Food

7.3

Overall

8.0

Reviews

1 / 10

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 Porto. 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 Porto from Key Largo?

    If you book a flight to Porto from Key Largo, you will be flying to Porto, which is the city’s only airport. Porto (OPO) is located 6.8 mi from the center of Porto. There are 0 flights from Key Largo to Porto per day from 10 different airlines.

  • Can I find flights from Key Largo to Porto for under $500 on Cheapflights?

    Yes, there are multiple flights from Key Largo to Porto for under $500. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $455, but on average you can expect to pay $572.

  • Are there last-minute flights available from Key Largo to Porto for under $600?

    There are currently 6+ open flights from Key Largo to Porto within the next 7 days for less than $600.

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

    The cheapest airline one-way is Air Europa, with whom users have recently found tickets for as low as $333. However, be on the lookout for offers from TAP AIR PORTUGAL and American Airlines, as they are both options that can get you from Key Largo to Porto for a low price.

  • What does MIA to OPO mean?

    MIA and OPO are unique codes to identify airports used in the aviation industry. They are defined by IATA (International Air Transport Association) and are commonly called IATA codes. MIA to OPO refers to a flight route from Miami Airport to Porto Airport. Ready for more IATA code knowledge? These are related airports for your current travel destination: Fort Lauderdale Airport (FLL), Key West Airport (EYW), Miami Opa Locka Airport (OPF), Fort Lauderdale Executive Airport (FXE), Boca Raton Airport (BCT).

  • Can I find deals for flights from Key Largo to Porto that include extra baggage allowance?

    The amount of baggage you can bring on your Key Largo to Porto flight depends on the airline and the type of fare you've chosen. After entering your flight details, you'll be able to view the specific baggage policies for each deal in the search results. Keep in mind that certain deals may offer additional baggage allowance.

  • Can I find deals on flights from Key Largo to Porto with specific airlines?

    Yes, Cheapflights allows you to browse and filter Key Largo to Porto flight deals by airline. After entering your origin and destination, use the available filters to view flights offered by airlines.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Key Largo to Porto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • Can I find deals for flights from Key Largo to Porto that allow pets onboard?

    Many airlines flying from Key Largo to Porto offer the option to travel with pets. After selecting a flight deal, you can find more information about the airline's pet policy on their official website or by contacting the airline directly. Please note that additional fees and restrictions may apply.

  • Can I find deals on last-minute flights from Key Largo to Porto?

    Yes, you can often find last-minute deals on Key Largo to Porto flights on Cheapflights. However, these deals can vary and may not always be available. We recommend checking back frequently or signing up for price alerts for the most up-to-date deals.

  • How recently were the Key Largo to Porto flight deals updated?

    The Key Largo to Porto flight deals you see on this page were last updated on 11/4.

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

    Currently, January is the cheapest month in which you can book a flight from Key Largo to Porto (average of $517). Flying from Key Largo to Porto in June is currently the most expensive (average of $993). 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

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Top 10 airlines flying from Key Largo to Porto

Discover the top 10 airlines that operate flights from Key Largo to Porto. 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 2,455,398 searches. Data last updated November 4, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$299Average$998FlexibilityNo cancel feeOn-time69%
SWISSCheapest$377Average$680FlexibilityNo cancel feeOn-time79%
LufthansaCheapest$449Average$652FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$457Average$724FlexibilityNo cancel feeOn-timeN/A
Air EuropaCheapest$476Average$728FlexibilityNo cancel feeOn-time83%
IberiaCheapest$477Average$578FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$498Average$601FlexibilityNo cancel feeOn-time71%
DeltaCheapest$504Average$695FlexibilityNo cancel feeOn-timeN/A
British AirwaysCheapest$524Average$634FlexibilityNo cancel feeOn-time70%
Air TransatCheapest$635Average$650FlexibilityNo cancel feeOn-time50%
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