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Belfast Intl

$445+ Cheap flights from Key Largo, FL to Belfast Intl (BFS)

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 2/13. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BFS
Mar 8 — Mar 151
Sun 3/8
Sun 3/15
1 adult, Economy
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Cheap flight deals from Key Largo to Belfast Intl

Cheapest flights from Key Largo to Belfast Intl
Explore the most affordable flight options available from Key Largo to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 6, 2026.

This Mytrip deal was found by Cheapflights users on 2/2. 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 4/16:15 pm
MIA
-
BFS
2 stops16h 05m
Multiple Airlines
Wed 4/157:30 am
BFS
-
MIA
3 stops43h 25m
Multiple Airlines
Deal found 2/2$671
This Mytrip deal was found by Cheapflights users on 2/4. 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 6/31:05 pm
MIA
-
BFS
2 stops25h 10m
Multiple Airlines
Sun 6/147:10 am
BFS
-
MIA
3 stops36h 25m
Multiple Airlines
Deal found 2/4$1,036
This Mytrip deal was found by Cheapflights users on 2/4. 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.
Sun 3/226:15 pm
MIA
-
BFS
2 stops20h 40m
Multiple Airlines
Sun 3/296:10 am
BFS
-
MIA
2 stops18h 35m
Multiple Airlines
Deal found 2/4$1,059
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Thu 3/1911:40 pm
MIA
-
BFS
1 stop18h 25m
Multiple Airlines
Thu 3/266:25 pm
BFS
-
MIA
2 stops33h 05m
Multiple Airlines
Deal found 2/2$1,203

Find flight deals from Key Largo to Belfast Intl

Keep the following information in mind while searching for Key Largo to Belfast Intl flight deals. Data was last updated February 6, 2026.

Round-trip from

$671
(Mytrip)

One-way from

$445
(Kiwi.com)
From Key Largo to Belfast Intl
Search Deals
One-way flight from Key Largo to Belfast Intl
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Key Largo to Belfast Intl 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 February 6, 2026.
Use the filters below to find and compare flights from Key Largo to Belfast Intl Airport that are best for you.

Fly from

Key Largo

Fly to

Belfast Intl

Route

Depart

Return

Price

MiamiBelfast

MIA - BFS

MIABFS

Miami

Wed 4/1

6:15 pm-3:20 pm

2 stops16h 05m

Belfast Intl

Wed 4/15

7:30 am-9:55 pm

3 stops43h 25m

$671

MiamiBelfast

MIA - BFS

MIABFS

Miami

Wed 6/3

1:05 pm-7:15 pm

2 stops25h 10m

Belfast Intl

Sun 6/14

7:10 am-2:35 pm

3 stops36h 25m

$1,036

MiamiBelfast

MIA - BFS

MIABFS

Miami

Sun 3/22

6:15 pm-6:55 pm

2 stops20h 40m

Belfast Intl

Sun 3/29

6:10 am-7:45 pm

2 stops18h 35m

$1,059

MiamiBelfast

MIA - BFS

MIABFS

Miami

Thu 3/19

11:40 pm-10:05 pm

1 stop18h 25m

Belfast Intl

Thu 3/26

6:25 pm-11:30 pm

2 stops33h 05m

$1,203

MiamiBelfast

MIA - BFS

MIABFS

Miami

Fri 2/13

9:20 pm-8:50 am

3 stops30h 30m

$445

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/5

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

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Intl Airport
No data available for this route at this time. Please check back soon.

Reviews of airlines servicing Belfast Intl

Get insights into the airlines that provide service to Belfast Intl. 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 Intl. Reviews last updated February 6, 2026.
Get a feel of what it's like to fly with British Airways from Key Largo to Belfast Intl Airport by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,716 reviews

Boarding

6.9

Comfort

6.8

Entertainment

6.4

Crew

7.6

Overall

6.7

Food

6.4

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
7,716 reviews
British Airways
6.7
Okay
7,716 reviews

Boarding

6.9

Comfort

6.8

Entertainment

6.4

Crew

7.6

Overall

6.7

Food

6.4

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 Intl. 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 Key Largo to Belfast Intl that include hotel bookings?

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

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

    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 Intl.

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

    Yes. Cheapflights offers flight deals from Key Largo to Belfast Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Browse thousands of different options on Cheapflights for your next trip

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Top airline flying from Key Largo to Belfast Intl

Discover the top airline that operate flights from Key Largo to Belfast Intl. 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 February 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$667Average$803FlexibilityNo cancel feeOn-time70%

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