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$344+ 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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
MIA — BHD
Aug 5 — Aug 121
Tue 8/5
Tue 8/12
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 July 31, 2025.

Round-trip from

$623
(Mytrip)

One-way from

$344
(Connections by easyJet)
From Key Largo to Belfast
Search Deals
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 July 31, 2025.

This Mytrip deal was found by Cheapflights users on 7/29. 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.
Sun 9/79:54 amMIA - BFS
3 stops31h 26mMultiple Airlines
Mon 9/156:10 amBFS - MIA
1 stop13h 10mMultiple Airlines
Deal found 7/29$623
This American Airlines deal was found by Cheapflights users on 7/30. 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.
Sun 9/77:35 pmMIA - BHD
1 stop12h 30mAmerican Airlines
Mon 9/153:25 pmBHD - MIA
1 stop28h 00mAmerican Airlines
Deal found 7/30$691
This Ovago deal was found by Cheapflights users on 7/28. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/209:27 pmMIA - BHD
2 stops36h 13mBritish Airways
Sat 9/277:00 pmBHD - MIA
1 stop24h 25mBritish Airways
Deal found 7/28$761
This KLM deal was found by Cheapflights users on 7/30. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/77:37 pmMIA - BHD
2 stops16h 18mKLM
Mon 9/156:30 amBHD - MIA
2 stops19h 44mKLM
Deal found 7/30$823
This Mytrip deal was found by Cheapflights users on 7/29. 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.
Sun 9/79:54 amMIA - BHD
3 stops29h 56mMultiple Airlines
Mon 9/157:05 amBHD - MIA
1 stop12h 15mMultiple Airlines
Deal found 7/29$847

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 July 31, 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

Sun 9/7

9:54 am-10:20 pm

3 stops31h 26m

Belfast Intl

Mon 9/15

6:10 am-2:20 pm

1 stop13h 10m

$623

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sun 9/7

7:35 pm-1:05 pm

1 stop12h 30m

Belfast City

Mon 9/15

3:25 pm-2:25 pm

1 stop28h 00m

$691

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sat 9/20

9:27 pm-2:40 pm

2 stops36h 13m

Belfast City

Sat 9/27

7:00 pm-2:25 pm

1 stop24h 25m

$761

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sun 9/7

7:37 pm-4:55 pm

2 stops16h 18m

Belfast City

Mon 9/15

6:30 am-9:14 pm

2 stops19h 44m

$823

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sun 9/7

9:54 am-8:50 pm

3 stops29h 56m

Belfast City

Mon 9/15

7:05 am-2:20 pm

1 stop12h 15m

$847

MiamiBelfast

MIA - BFS

MIABFS

Miami

Fri 8/15

5:15 pm-8:05 pm

1 stop21h 50m

$344

MiamiBelfast

MIA - BHD

MIABHD

Miami

Sat 8/30

4:53 pm-8:50 am

3 stops58h 57m

$402

MiamiBelfast

MIA - BHD

MIABHD

Miami

Mon 10/27

5:23 pm-4:05 pm

2 stops18h 42m

$409

MiamiBelfast

MIA - BHD

MIABHD

Miami

Thu 8/7

7:30 pm-8:45 pm

1 stop20h 15m

$1,153

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

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 July 31, 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 July 31, 2025.
Peruse reviews from past customers who have flown with KLM, American Airlines, and Iberia 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.
KLM
7.8
Good
1,383 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
KLM
7.8
Good
1,383 reviews
KLM
7.8
Good
1,383 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
American Airlines
7.2
Good
10,000 reviews
KLM
7.8
Good
1,383 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
Iberia
7.0
Good
2,859 reviews
KLM
7.8
Good
1,383 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.
British Airways
6.6
Okay
7,222 reviews
KLM
7.8
Good
1,383 reviews

Comfort

7.7

Crew

8.4

Food

7.3

Overall

7.8

Boarding

7.8

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Anonymous,Jun 2025

AMS - BOS

A two and half hour delay caused havoc with all connections. Otherwise on board service was great.

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.

  • 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 July 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest$593Average$774FlexibilityNo cancel feeOn-time70%

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