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$763+ 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 3/4. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BHD
Jan 17 — Jan 241
Sat 1/17
Sat 1/24
1 adult, Economy
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Cheap flight deals from Key Largo to Belfast

Best flights from Key Largo to Belfast
Discover carefully curated flight deals from Key Largo to Belfast that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 18, 2025.

This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:10 pmMIA - BHD
1 stop12h 05mBritish Airways
Sun 3/86:30 amBHD - MIA
1 stop13h 10mBritish Airways
Deal found 12/16$763
This British Airways deal was found by Cheapflights users on 12/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/135:10 pmMIA - BHD
1 stop16h 05mBritish Airways
Tue 2/178:45 amBHD - MIA
1 stop15h 45mBritish Airways
Deal found 12/16$823
This Booking.com deal was found by Cheapflights users on 12/17. 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.
Fri 1/24:35 pmMIA - BFS
2 stops17h 35mMultiple Airlines
Tue 1/66:30 amBFS - MIA
2 stops20h 59mMultiple Airlines
Deal found 12/17$2,285
This Gotogate deal was found by Cheapflights users on 12/17. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/24:53 pmMIA - BHD
2 stops34h 22mBritish Airways
Tue 1/65:15 pmBHD - MIA
2 stops33h 21mBritish Airways
Deal found 12/17$1,727

Find 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 December 18, 2025.

Round-trip from

$763
(British Airways)
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 December 18, 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

Wed 3/4

5:10 pm-10:15 am

1 stop12h 05m

Belfast City

Sun 3/8

6:30 am-2:40 pm

1 stop13h 10m

$763

MiamiBelfast

MIA - BHD

MIABHD

Miami

Fri 2/13

5:10 pm-2:15 pm

1 stop16h 05m

Belfast City

Tue 2/17

8:45 am-7:30 pm

1 stop15h 45m

$823

MiamiBelfast

MIA - BHD

MIABHD

Miami

Fri 1/2

4:53 pm-8:15 am

2 stops34h 22m

Belfast City

Tue 1/6

5:15 pm-9:36 pm

2 stops33h 21m

$1,727

MiamiBelfast

MIA - BFS

MIABFS

Miami

Fri 1/2

4:35 pm-3:10 pm

2 stops17h 35m

Belfast Intl

Tue 1/6

6:30 am-10:29 pm

2 stops20h 59m

$2,285

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/16

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 December 18, 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 December 18, 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
7,585 reviews

Entertainment

6.4

Crew

7.6

Overall

6.7

Boarding

6.9

Food

6.4

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.
British Airways
6.7
Okay
7,585 reviews
British Airways
6.7
Okay
7,585 reviews

Entertainment

6.4

Crew

7.6

Overall

6.7

Boarding

6.9

Food

6.4

Comfort

6.7

Reviews

1 / 20
8.0
Excellent

Lakshmi,Dec 2025

SFO - LHR

I had a great time on the flight with good entertainment and food. The staff was awesome. The only thing was there was a delay in boarding and takeoff from London. However, I was pleasantly surprised when the airline sent an apology for the few later landing in Mumbai. They did not have WiFi on board on the leg from London to Mumbai but that was okay for me. On the first leg from SF to London, a couple of seats ahead of me had issues with their display so they could not watch anything on their screens although the stewardess gas be them an option to use the WiFi on their devices. This did not affect me, however, so that was cool. I would recommend British Airways. This was my first time flying with them and I had a lovely flight.

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 12h 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.

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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 December 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$667Average$803FlexibilityNo cancel feeOn-time70%

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