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£49+ Cheap flights from Key Largo

This is the cheapest return flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/2. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
MIA — LHR
8 Feb — 15 Feb1
1 adult
1 adult, Economy, 0 bags

What to know about flights from Key Largo

Discover essential information about flights departing from Key Largo, including flight schedules, destinations, airlines operating at the Key Largo airport, and any specific guidelines or requirements for travellers. Please note that the information is based on the most recent updates available. Data last updated 9 January 2026.

Cheapest one-way flight

£29

Cheapest round-trip flight

£308

Cheapest airline

Delta

Most popular destination

London Heathrow (LHR)
The cheapest one-way flight from Key Largo is currently to New York John F Kennedy Intl.
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The cheapest round-trip flight from Key Largo is currently to London Heathrow.
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On average, Delta currently has the cheapest one-way flight from Key Largo (avg. price of £187).
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London Heathrow (LHR) is currently the most popular flight destination from Key Largo (average return price of £389).
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Find flights from Key Largo

Enter your travel dates to find the best prices.

Cheapest flights from Key Largo
Explore the most affordable flight options available from Key Largo. Find the lowest fares based on data from user searches, with prices last updated on 9 January 2026.

Fri 6/209:40MIA - CUN
Nonstop2h 10mDelta
Wed 18/213:33CUN - MIA
1 stop9h 51mDelta
Deal found 7/1£202
Fri 30/118:05MIA - CUN
1 stop15h 50mDelta
Mon 2/213:05CUN - MIA
Nonstop1h 45mDelta
Deal found 6/1£202
Sat 21/205:05MIA - CUN
1 stop11h 31mFrontier
Sat 28/216:22CUN - MIA
1 stop8h 20mFrontier
Deal found 7/1£205
Wed 4/210:33MIA - CUN
1 stop10h 38mDelta
Wed 18/216:20CUN - MIA
1 stop7h 04mDelta
Deal found 8/1£205
Thu 22/112:00MIA - CUN
1 stop9h 11mDelta
Sat 24/114:00CUN - MIA
2 stops10h 51mDelta
Deal found 6/1£206
Wed 21/109:50MIA - CUN
Nonstop2h 00mDelta
Thu 22/115:13CUN - MIA
1 stop9h 38mDelta
Deal found 7/1£207
Thu 29/119:25MIA - CUN
2 stops17h 40mDelta
Thu 5/211:18CUN - MIA
1 stop12h 06mDelta
Deal found 8/1£208
Thu 22/109:50MIA - CUN
Nonstop2h 00mDelta
Sat 31/117:45CUN - MIA
1 stop7h 06mDelta
Deal found 7/1£210
Wed 11/207:03MIA - CUN
1 stop10h 35mDelta
Sun 15/213:15CUN - MIA
Nonstop1h 46mDelta
Deal found 7/1£220
Tue 10/216:35MIA - MAN
1 stop13h 00mTAP AIR PORTUGAL
Tue 24/217:15MAN - MIA
1 stop26h 35mTAP AIR PORTUGAL
Deal found 7/1£313
Thu 22/116:35MIA - MAN
1 stop13h 00mTAP AIR PORTUGAL
Sun 25/118:05MAN - MIA
1 stop25h 45mTAP AIR PORTUGAL
Deal found 8/1£321
Wed 28/123:35MIA - MAN
1 stop30h 00mTAP AIR PORTUGAL
Mon 2/211:25MAN - MIA
1 stop32h 25mTAP AIR PORTUGAL
Deal found 6/1£324

Find flights from Key Largo within your budget

 
Find flights departing from Key Largo that match your specified budget. Filter results by price range, allowing you to narrow down options and find flights that fit within your financial constraints. Please note that the search results are based on data from user searches, with fares last updated on 9 January 2026. In the last 7 days, Cheapflights users made a total of 858,174 searches

Fly to

Heathrow

Route

Depart

Return

Price

MiamiCancún

MIA - CUN

MIACUN

Miami

Tue 27/1

09:50-11:50

Nonstop2h 00m

Cancun

Thu 5/2

15:10-23:24

1 stop8h 14m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Sat 7/2

09:40-11:50

Nonstop2h 10m

Cancun

Thu 12/2

13:05-14:51

Nonstop1h 46m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Tue 20/1

09:50-11:50

Nonstop2h 00m

Cancun

Mon 26/1

13:05-14:50

Nonstop1h 45m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Sat 24/1

07:02-20:02

1 stop13h 00m

Cancun

Thu 29/1

13:05-14:50

Nonstop1h 45m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Wed 28/1

09:50-11:50

Nonstop2h 00m

Cancun

Wed 4/2

14:17-23:24

1 stop9h 07m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Sat 7/2

09:40-11:50

Nonstop2h 10m

Cancun

Sun 8/2

13:15-15:01

Nonstop1h 46m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Tue 20/1

09:50-11:50

Nonstop2h 00m

Cancun

Fri 23/1

13:05-14:50

Nonstop1h 45m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Sun 22/2

09:40-11:50

Nonstop2h 10m

Cancun

Thu 26/2

16:15-23:24

1 stop7h 09m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Fri 6/2

09:40-11:50

Nonstop2h 10m

Cancun

Sun 8/2

13:15-15:01

Nonstop1h 46m

£202

MiamiCancún

MIA - CUN

MIACUN

Miami

Fri 6/2

09:40-11:50

Nonstop2h 10m

Cancun

Mon 9/2

13:38-23:24

1 stop9h 46m

£202

Flights are sorted by cheapest return flights first.

Deals found on 7/1

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

Have a flexible travel schedule? Discover the best time to fly from Key Largo with our price prediction graph.
Estimated return 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

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

When is the best time to book a flight from Key Largo?

Use this chart to determine the optimal time to book a return flight from Key Largo to Heathrow. Price data was last updated on 2 January 2026.

Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Key Largo. 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?

Currently, January is the cheapest month in which you can book a flight from Key Largo (average of £210). Flying from Key Largo in June will prove the most costly (average of £454). There are multiple factors that influence the price of a flight so comparing airlines, departure airports and times can help keep costs down.

Which airlines fly from Key Largo?

Many airlines operate round-trip flights from Key Largo: Virgin Atlantic, British Airways, Air France, American Airlines, KLM. These airlines fly to the following popular destinations: London.

American Airlines
American Airlines
From £72
Virgin Atlantic
Virgin Atlantic
From £284
British Airways
British Airways
From £285
Avianca
Avianca
From £129

Airline reviews for flights from Key Largo

Get insights into the airlines that provide service from Key Largo. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing airline for your flight from Key Largo. In the last 7 days, Cheapflights users made a total of 858,174 searches.
Get a feel of what it's like to fly with Finnair, Virgin Atlantic, andAir France from Key Largo by reading reviews from past customers. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Finnair
7.6
Good
1,346 reviews
Check prices

Crew

8.2

Overall

7.6

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Food

6.7

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Finnair
7.6
Good
1,346 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Crew

8.2

Overall

7.6

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Food

6.7

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Virgin Atlantic
7.5
Good
678 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Crew

8.2

Overall

7.6

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Food

6.7

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
Air France
7.4
Good
1,519 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Crew

8.2

Overall

7.6

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Food

6.7

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
American Airlines
7.2
Good
11,097 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Crew

8.2

Overall

7.6

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Food

6.7

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight
British Airways
6.7
Okay
7,659 reviews
Finnair
7.6
Good
1,346 reviews
Check prices

Crew

8.2

Overall

7.6

Comfort

7.4

Boarding

7.7

Entertainment

6.9

Food

6.7

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

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Related info for your journey

Access useful and relevant information related to your journey from Key Largo. This can include details such as airport transportation, visa requirements, travel insurance, luggage regulations, and any other information that can ensure a smooth and hassle-free travel experience. Please note that the information is based on general guidance and may need to be verified with official sources. Data last updated 9 January 2026.

  • What is the cheapest airport to fly out of Key Largo?

    Manchester airport offers the cheapest routes to Aberdeen, from £22; whereas Poznan Lawica airport is typically cheaper if you're flying to Edinburgh, from £23. It's best to make sure you are flexible on dates to find the cheapest possible flight options for your journey.

  • What is the cheapest month to fly from Key Largo?

    At the present moment the cheapest month to fly from Key Largo is currently January; with June being the most expensive. Prices will vary depending on multiple factors such as booking in advance, airline and departure airports and times.

  • Where are the cheapest places to fly to from Key Largo?

    Check out the cheapest flights from Key Largo to embark to:
    Travel from Bristol to Corvera from £19 round trip
    Travel from Oslo to London from £22 round trip
    Travel from London to Lyon from £23 round trip
    Travel from London to Poznan from £24 round trip
    Travel from London to Málaga from £25 round trip

  • How does Cheapflights help users find flights from Key Largo?

    Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Key Largo. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

  • Why should you use Cheapflights to find cheap flight tickets from Key Largo?

    By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights from Key Largo.

  • Can Cheapflights find flights from Key Largo with no change fees?

    Certainly. Search results for flights from Key Largo shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

  • Can Cheapflights notify me if prices for flights from Key Largo become cheaper?

    Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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Fly with Cheapflights

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How does Cheapflights help users find flights from Key Largo?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Key Largo. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Key Largo?

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights from Key Largo.

Can Cheapflights find flights from Key Largo with no change fees?

Certainly. Search results for flights from Key Largo shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Key Largo become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and use a valid email address to enable the Price Alerts feature. That’s it!

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