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$267+ Cheap flights from Key Largo, FL to Belfast

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 10/12. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BHD
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheap flight deals from Key Largo to Belfast

Keep the following information in mind while searching for Key Largo to Belfast flight deals. Data was last updated September 15, 2025.

Round-trip from

$666
(Mytrip)

One-way from

$267
(Kiwi.com)
From Key Largo to Belfast
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One-way flight from Key Largo to Belfast
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Find flight deals from Key Largo to Belfast

Cheapest flights from Key Largo to Belfast
Explore the most affordable flight options available from Key Largo to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 15, 2025.

This Mytrip deal was found by Cheapflights users on 9/15. 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.
Wed 10/2912:35 amMIA - BFS
3 stops43h 10mMultiple Airlines
Thu 11/67:45 pmBFS - MIA
3 stops30h 35mMultiple Airlines
Deal found 9/15$666
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 9/173:48 pmMIA - BFS
2 stops22h 17mMultiple Airlines
Fri 9/198:35 pmBFS - MIA
1 stop22h 45mMultiple Airlines
Deal found 9/13$837
This KAYAK deal was found by Cheapflights users on 9/13. 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.
Wed 9/177:35 pmMIA - BHD
1 stop15h 00mBritish Airways
Tue 10/2110:20 amBHD - MIA
2 stops17h 13mBritish Airways
Deal found 9/13$1,444
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Wed 9/172:20 pmMIA - BHD
3 stops22h 20mMultiple Airlines
Fri 9/195:55 pmBHD - MIA
3 stops25h 50mMultiple Airlines
Deal found 9/13$1,535
This Ovago deal was found by Cheapflights users on 9/13. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/177:35 pmMIA - BHD
1 stop15h 00mBritish Airways
Fri 9/196:35 amBHD - MIA
1 stop16h 50mBritish Airways
Deal found 9/13$1,833

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Belfast 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 September 15, 2025.
Use the filters below to find and compare flights from Key Largo to Belfast that are best for you.

Fly from

Key Largo

Fly to

Belfast

Route

Depart

Return

Price

MiamiBelfast

MIA - BFS

MIABFS

Miami

Wed 10/29

12:35 am-11:45 pm

3 stops43h 10m

Belfast Intl

Thu 11/6

7:45 pm-9:20 pm

3 stops30h 35m

$666

MiamiBelfast

MIA - BHD

MIABHD

Miami

Tue 3/3

10:10 pm-8:15 am

1 stop29h 05m

Belfast City

Fri 3/6

6:45 am-6:00 pm

2 stops16h 15m

$1,208

MiamiBelfast

MIA - BHD

MIABHD

Miami

Tue 3/3

5:10 pm-11:30 am

1 stop13h 20m

Belfast City

Thu 3/5

11:05 am-7:30 pm

1 stop13h 25m

$1,223

MiamiBelfast

MIA - BHD

MIABHD

Miami

Tue 3/3

3:35 pm-4:50 pm

2 stops20h 15m

Belfast City

Thu 3/5

6:30 am-2:50 pm

1 stop13h 20m

$1,256

MiamiBelfast

MIA - BFS

MIABFS

Miami

Sun 10/12

10:46 pm-7:30 am

2 stops51h 44m

$267

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sun 10/12

10:46 pm-8:25 pm

2 stops40h 39m

$309

MiamiBelfast

MIA - BHD

MIABHD

Miami

Mon 10/27

5:40 pm-2:15 pm

2 stops16h 35m

$406

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sun 10/12

5:00 pm-1:05 pm

1 stop15h 05m

$422

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Best time to book a flight from Key Largo to Belfast

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

What is the cheapest time of day to fly from KE9 to BFS?

Find hourly flight availability from Key Largo to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 15, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Key Largo to Belfast as you normally would.

Reviews of airlines servicing Belfast

Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated September 15, 2025.
Peruse reviews from past customers who have flown with British Airways from Key Largo to Belfast to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,361 reviews

Crew

7.6

Boarding

6.9

Entertainment

6.4

Food

6.3

Comfort

6.7

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.
British Airways
6.7
Okay
7,361 reviews
British Airways
6.7
Okay
7,361 reviews

Crew

7.6

Boarding

6.9

Entertainment

6.4

Food

6.3

Comfort

6.7

Overall

6.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2025

IAD - LHR

The plane had to load and unload passengers not through a jet way but out on the tarmac at Heathrow. The steps were steep. We weren't expecting to have to carry our luggage up and down stairs.

Related info for your journey

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

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

    British Airways can get you from Key Largo to Belfast in just under 29h 05m. Your travel time can differ by up to . The distance between Key Largo and Belfast is about 4166 mi.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Key Largo to Belfast (average of $657). Flying from Key Largo to Belfast in June is currently the most expensive (average of $1,189). 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 airline flying from Key Largo to Belfast

Discover the top airline that operate flights from Key Largo to Belfast. 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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$667Average$803FlexibilityNo cancel feeOn-time70%

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