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Cheap flights from Belfast Intl Airport to Key Largo from £501

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 8/10. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — MIA
3 set — 10 set1
1 adult

Cheap flight deals from Belfast Intl to Key Largo

Keep the following information in mind while searching for Belfast Intl to Key Largo flight deals. Data was last updated 29 agosto 2025.

Round-trip from

£501

Popular in

December

Cheapest in

November

Average price

£731
8/10-12/10
  • 8/10-12/10
  • 5 total stops
  • 61h 25m total
  • Belfast to Key Largo
Search Deals
High demand for flights, 6% potential price rise
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Cheapest flight prices on average. 3% potential price decrease (£15 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
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Find flight deals from Belfast Intl to Key Largo

Cheapest flights from Belfast Intl to Key Largo
Explore the most affordable flight options available from Belfast Intl to Key Largo. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 agosto 2025.

mer 8/1011:10BFS - MIA
2 stops32h 35mMultiple Airlines
dom 12/1000:35MIA - BFS
3 stops28h 50mMultiple Airlines
Deal found 28/8£501
lun 20/1006:45BFS - MIA
3 stops37h 00mMultiple Airlines
ven 24/1000:25MIA - BFS
2 stops35h 00mMultiple Airlines
Deal found 27/8£521
lun 13/1006:45BFS - MIA
3 stops37h 00mMultiple Airlines
dom 19/1000:35MIA - BFS
3 stops28h 50mMultiple Airlines
Deal found 28/8£526

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast Intl to Key Largo 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 858,174 searches. Data last updated 29 agosto 2025.
Use the filters below to find and compare flights from Belfast Intl Airport to Key Largo that are best for you.

Fly from

Belfast Intl

Fly to

Key Largo

Route

Depart

Return

Price

BelfastMiami

BFS - MIA

BFSMIA

Belfast Intl

mer 8/10

11:10-14:45

2 stops32h 35m

Miami

dom 12/10

00:35-10:25

3 stops28h 50m

£501

BelfastMiami

BFS - MIA

BFSMIA

Belfast Intl

lun 20/10

06:45-14:45

3 stops37h 00m

Miami

ven 24/10

00:25-16:25

2 stops35h 00m

£521

BelfastMiami

BFS - MIA

BFSMIA

Belfast Intl

lun 13/10

06:45-14:45

3 stops37h 00m

Miami

dom 19/10

00:35-10:25

3 stops28h 50m

£526

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Best time to book a flight from Belfast Intl to Key Largo

Have a flexible travel schedule? Discover the best time to fly to Key Largo from Belfast Intl 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.

Cheapflights Insights

Everything you need to know about your flight from Belfast Intl Airport to Key Largo

What is the cheapest month to book a flight from Belfast Intl Airport to Key Largo?

Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to Key Largo (average of £559). Flying from Belfast Intl Airport to Key Largo in July is currently the most expensive (average of £760). 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.

Reviews of airlines servicing Key Largo

Get insights into the airlines that provide service to 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 an airline for your flight to Key Largo. Reviews last updated 29 agosto 2025.
Read through reviews of airlines operating flights from Belfast Intl Airport to Key Largo, such as American Airlines and British Airways. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break
American Airlines
7.2
Good
10,000 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break
British Airways
6.7
Okay
7,320 reviews
American Airlines
7.2
Good
10,000 reviews
Check prices

Comfort

7.2

Food

6.5

Overall

7.2

Crew

8.0

Entertainment

6.9

Boarding

7.5

Reviews

1 / 20
2.0
Mediocre

Andrew,May 2025

LAX - MIA

2 hour delay. Discovered an engine problem late, we boarded the plane and they asked us to come off. To add insult to injury nothing was given to passengers to make amends. No free drink. No extra food or snacks. No free WiFi. Gimme a break

Related info for your journey

Find useful and relevant information for your journey from Belfast Intl to Key Largo. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    Yes. In addition to deals on Belfast Intl to Key Largo flights, Cheapflights offers holiday packages that include both flights and hotel.

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

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

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

    Yes. Cheapflights offers flight deals from Belfast Intl to Key Largo 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 Belfast Intl Airport to Key Largo?

    Currently, January is the cheapest month in which you can book a flight from Belfast Intl Airport to Key Largo (average of £559). Flying from Belfast Intl Airport to Key Largo in July is currently the most expensive (average of £760). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Belfast Intl to Key Largo

Discover the top 2 airlines that operate flights from Belfast Intl to Key Largo. 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 858,174 searches. Data last updated 29 agosto 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£365Average£565FlexibilityNo cancel feeOn-time70%
Search British Airways flights
American AirlinesCheapest£414Average£650FlexibilityNo cancel feeOn-time71%
Search American Airlines flights

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

Need flexible booking options for your flight to Key Largo from Belfast Intl? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

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

Not ready to book yet? You can track prices for flights from Belfast Intl to Key Largo on Cheapflights with our Price Alert feature and get notified when better prices are available.

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