Cheap flights from Key West, FL to Belfast, United Kingdom

Flights starting at $470. Choose between Silver Airways, easyJet, or JetBlue Airways to find the best price.

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Book your trip to arrive at Belfast International, or George Best Belfast City. The most popular airlines for this route are Silver Airways, easyJet, JetBlue Airways, British Airways, and Spirit Airlines. Key West and Belfast have 300 direct flights per week. When you arrive at Belfast, consider visiting Giant's Causeway, Bru Na Boinne Neolithic Site (County Meath, Ireland), and Trinity College, Dublin.

Check-in for a flight from Key West to Belfast

NameCarrier codeIATA CodePassport needed during bookingOnline check-in available
Silver AirwaysSIL3MNoOpens 24 days before flight
Closes 2 hours before flight
easyJetEZYU2NoOpens 720 days before flight
Closes 2 hours before flight
JetBlue AirwaysJBUB6NoOpens 24 days before flight
Closes 2 hours before flight
British AirwaysBAWBANo0
0
Spirit AirlinesNKSNKNoOpens 24 days before flight
Closes 1 hours before flight

Weather in Belfast

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January6°C2°C
February7°C3°C
March8°C3°C
April11°C4°C
May13°C7°C
June16°C10°C
July17°C11°C
August17°C11°C
September15°C10°C
October12°C8°C
November9°C5°C
December7°C3°C
Hottest Month
17°C
July
Coldest month
2°C
January
Sunny days
254
days per year
Snow days
2
days per year

14 day forecast

Friday
22 Mar
91%
8°C3°C
29 Mar
84%
9°C5°C
Saturday
23 Mar
89%
8°C3°C
30 Mar
11°C3°C
Sunday
24 Mar
89%
10°C2°C
31 Mar
86%
10°C5°C
Monday
25 Mar
89%
10°C5°C
1 Apr
86%
12°C4°C
Tuesday
26 Mar
83%
7°C4°C
2 Apr
89%
9°C4°C
Wednesday
27 Mar
82%
7°C5°C
3 Apr
86%
9°C1°C
Thursday
28 Mar
84%
8°C5°C
4 Apr
88%
8°C1°C

Frequently asked questions

What are the most popular routes to and from Key West?
What are the most popular routes to and from Belfast?
What airports are near Key West?
What airports are near Belfast?
Is it possible to combine flights, buses, and trains in one itinerary when traveling between Key West and Belfast?
What is Virtual Interlining and how do I use it?
Which airlines fly between Key West and Belfast?
When's the best time to travel between Key West and Belfast?
What flights operate between Key West and Belfast?
How many airports are there near Key West?
How many airports are there near Belfast?
What time do nonstop (direct) flights between Key West and Belfast depart?
What time do nonstop (direct) flights between Key West and Belfast arrive?
What time do flights between Key West and Belfast depart?
What time do flights between Key West and Belfast arrive?

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