Cheap flights from Seattle to Belfast from £261

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2 stops
Mon, Oct 27
Seattle SEABelfast BFS

£261
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2 stops
Tue, Oct 28
Seattle SEABelfast BFS

£300
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2 stops
Tue, Oct 28
Seattle SEABelfast BFS

£306
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2 stops
Sun, Oct 26
Seattle SEABelfast BHD

£307
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2 stops
Sun, Oct 26
Seattle SEABelfast BHD

£307
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2 stops
Tue, Oct 28
Seattle SEABelfast BFS

£334
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Prices updated:

2 stops
Wed, Oct 29 – Mon, Nov 3
Seattle SEABelfast BHD

£690
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2 stops
Thu, Oct 30 – Tue, Nov 4
Seattle SEABelfast BFS

£698
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2 stops
Wed, Oct 29 – Mon, Nov 3
Seattle SEABelfast BFS

£703
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2 stops
Thu, Oct 30 – Tue, Nov 4
Seattle SEABelfast BFS

£703
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2 stops
Wed, Oct 29 – Mon, Nov 3
Seattle SEABelfast BFS

£707
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2 stops
Thu, Oct 30 – Tue, Nov 4
Seattle SEABelfast BFS

£756
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Prices updated:

How much do flights to Belfast cost?

Key info about flying to Belfast

Depart from
Seattle–Tacoma International
Arrive to
Belfast International
Average flights per week
400
Flight distance
Worth visiting
Bru Na Boinne Neolithic Site (County Meath, Ireland) - Trinity College, Dublin - Giant's Causeway

Check-in for a flight from Seattle to Belfast

NameCarrier codeIATA CodePassport needed during booking
easyJetEZYU2Yes
RyanairRYRFRNo
Aer LingusEINEINo
Hawaiian AirlinesHALHANo
JetBlue AirwaysJBUB6No

Weather in Belfast

Average Weather

MonthAverage monthly max temperatureAverage monthly min temperature
January6°C2°C
February7°C3°C
March9°C3°C
April11°C4°C
May13°C7°C
June16°C9°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
259
days per year
Snow days
2
days per year

14 day forecast

Sunday
5 Oct
89%
13°C9°C
12 Oct
15°C6°C
Monday
6 Oct
17°C11°C
13 Oct
15°C6°C
Tuesday
7 Oct
88%
13°C6°C
14 Oct
15°C7°C
Wednesday
8 Oct
13°C5°C
15 Oct
15°C9°C
Thursday
9 Oct
15°C9°C
16 Oct
15°C9°C
Friday
10 Oct
15°C7°C
17 Oct
16°C8°C
Saturday
11 Oct
15°C6°C
18 Oct
14°C7°C
Travelers usually depart from Seattle–Tacoma International, Kenmore Air Harbor Seaplane Base, or Boeing Field when they travel from Seattle to Belfast. Book your trip to arrive at Belfast International, or George Best Belfast City. The most popular airlines for this route are easyJet, Ryanair, Aer Lingus, Hawaiian Airlines, and JetBlue Airways. Seattle and Belfast have 400 direct flights per week. When you arrive at Belfast, consider visiting Bru Na Boinne Neolithic Site (County Meath, Ireland), Trinity College, Dublin, and Giant's Causeway.

Frequently asked questions

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