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$671+ Cheap flights from Key Largo, FL to Belfast

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/5. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BHD
nov. 29 — déc. 61
sam. 11/29
sam. 12/6
1 adult, Economy
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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 octobre 30, 2025.

This FlightHub deal was found by Cheapflights users on 10/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/55:10 pmMIA - BHD
1 stop12h 20mBritish Airways
lun. 12/86:35 amBHD - MIA
2 stops19h 25mBritish Airways
Deal found 10/29$671
This Air France deal was found by Cheapflights users on 10/29. 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.
ven. 12/54:50 pmMIA - BHD
1 stop19h 00mMultiple Airlines
lun. 12/85:20 pmBHD - MIA
1 stop26h 30mMultiple Airlines
Deal found 10/29$684
This KLM deal was found by Cheapflights users on 10/29. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 12/55:20 pmMIA - BHD
2 stops18h 30mKLM
lun. 12/86:30 amBHD - MIA
2 stops16h 55mKLM
Deal found 10/29$699
This Mytrip deal was found by Cheapflights users on 10/29. 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.
ven. 12/54:08 pmMIA - BFS
3 stops24h 52mMultiple Airlines
lun. 12/88:55 pmBFS - MIA
2 stops27h 00mMultiple Airlines
Deal found 10/29$726
This KAYAK deal was found by Cheapflights users on 10/29. 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.
ven. 11/1410:00 pmMIA - BHD
1 stop11h 15mBritish Airways
mar. 11/187:25 pmBHD - MIA
1 stop24h 15mBritish Airways
Deal found 10/29$874
This Cheapflightsfares deal was found by Cheapflights users on 10/30. 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.
mer. 11/55:10 pmMIA - BHD
1 stop12h 05mBritish Airways
dim. 11/96:30 amBHD - MIA
1 stop13h 10mBritish Airways
Deal found 10/30$910
This American Airlines deal was found by Cheapflights users on 10/30. 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.
mer. 11/53:27 pmMIA - BHD
2 stops13h 48mAmerican Airlines
dim. 11/99:10 amBHD - MIA
1 stop12h 55mAmerican Airlines
Deal found 10/30$941
This American Airlines deal was found by Cheapflights users on 10/30. 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.
jeu. 11/610:15 pmMIA - BHD
1 stop15h 35mAmerican Airlines
dim. 11/96:30 amBHD - MIA
1 stop15h 35mAmerican Airlines
Deal found 10/30$987
This Mytrip deal was found by Cheapflights users on 10/28. 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.
jeu. 12/184:35 pmMIA - BFS
2 stops20h 00mMultiple Airlines
mar. 12/306:30 amBFS - MIA
2 stops20h 59mMultiple Airlines
Deal found 10/28$1,444

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 octobre 30, 2025.

Round-trip from

$660
(Cheapflightsfares)
From Key Largo to Belfast
Search Deals

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 octobre 30, 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 - BHD

MIABHD

Miami

ven. 12/5

4:50 pm-4:50 pm

1 stop19h 00m

Belfast City

lun. 12/8

5:20 pm-2:50 pm

1 stop26h 30m

$684

MiamiBelfast

MIA - BHD

MIABHD

Miami

ven. 12/5

5:20 pm-4:50 pm

2 stops18h 30m

Belfast City

lun. 12/8

6:30 am-6:25 pm

2 stops16h 55m

$699

MiamiBelfast

MIA - BFS

MIABFS

Miami

ven. 12/5

4:08 pm-10:00 pm

3 stops24h 52m

Belfast Intl

lun. 12/8

8:55 pm-6:55 pm

2 stops27h 00m

$726

MiamiBelfast

MIA - BHD

MIABHD

Miami

ven. 11/14

10:00 pm-2:15 pm

1 stop11h 15m

Belfast City

mar. 11/18

7:25 pm-2:40 pm

1 stop24h 15m

$874

MiamiBelfast

MIA - BHD

MIABHD

Miami

mar. 3/3

3:35 pm-4:50 pm

2 stops20h 15m

Belfast City

jeu. 3/5

6:30 am-2:50 pm

1 stop13h 20m

$1,205

MiamiBelfast

MIA - BHD

MIABHD

Miami

mar. 3/3

10:10 pm-8:15 am

1 stop29h 05m

Belfast City

ven. 3/6

6:45 am-6:00 pm

2 stops16h 15m

$1,208

MiamiBelfast

MIA - BFS

MIABFS

Miami

jeu. 12/18

4:35 pm-5:35 pm

2 stops20h 00m

Belfast Intl

mar. 12/30

6:30 am-10:29 pm

2 stops20h 59m

$1,444

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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 octobre 30, 2025.

It’s optimal to fly from Key Largo to Belfast in the afternoon. By choosing this option you can save up to 40% on the cost of your flight, compared to a flight in the morning.

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 octobre 30, 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
7,487 reviews

Comfort

6.7

Entertainment

6.4

Crew

7.6

Overall

6.7

Boarding

6.9

Food

6.3

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
7,487 reviews
British Airways
6.7
Okay
7,487 reviews

Comfort

6.7

Entertainment

6.4

Crew

7.6

Overall

6.7

Boarding

6.9

Food

6.3

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?

    KLM can get you from Key Largo to Belfast in just under 18h 30m. 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.

See more FAQs

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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 octobre 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$667Average$803FlexibilityNo cancel feeOn-time70%

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