London to Seattle Flights on Aer Lingus from £254.34*

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Book London to Seattle flight deals*

* Fares displayed include air transportation charges, taxes and fees. Fares displayed have been collected within the last 24 hours and may no longer be available at time of booking. Fares are economy class and may include connections with our partner airlines. Modifying this information may result in a different fare. Additional baggage fees and charges for optional products and services may apply.

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Book London to Seattle flight deals*

£

*Roundtrip Restrictions apply.
Each way fare as part of a return trip including taxes and charges. One way fare including taxes and charges.

QA FE Test Travel Dates Filter Feature Prepro

£

Manchester (MAN)to

New York (JFK)
22 Apr 2026 - 27 Apr 2026
From
£434.64
Seen: 22 hrs ago
Roundtrip*
Economy

Manchester (MAN)to

Orlando (MCO)
19 Feb 2026 - 5 Mar 2026
From
£475.56
Seen: 4 minutes ago
Roundtrip*
Economy

London (LHR)to

Dublin (DUB)
3 Mar 2026 - 4 Mar 2026
From
£58.74
Seen: 3 hrs ago
Each way
Economy

Birmingham (BHX)to

Dublin (DUB)
12 Feb 2026 - 12 Feb 2026
From
£25.50
Seen: 3 hrs ago
Each way
Economy

Manchester (MAN)to

Dublin (DUB)
12 Mar 2026 - 28 Mar 2026
From
£25.88
Seen: 3 hrs ago
Each way
Economy

Birmingham (BHX)to

Belfast (BHD)
Depart: 25 Feb 2026
From
£39.99
Seen: 2 hrs ago
One way
Economy

London (LHR)to

Cork (ORK)
24 Feb 2026 - 3 Mar 2026
From
£48.70
Seen: 4 hrs ago
Each way
Economy

Belfast (BHD)to

Birmingham (BHX)
Depart: 19 Feb 2026
From
£39.99
Seen: 2 hrs ago
One way
Economy

Edinburgh (EDI)to

Dublin (DUB)
6 Feb 2026 - 8 Feb 2026
From
£34.86
Seen: 2 hrs ago
Each way
Economy

London (LHR)to

Shannon (SNN)
23 Mar 2026 - 24 Mar 2026
From
£48.39
Seen: 3 hrs ago
Each way
Economy

Manchester (MAN)to

Belfast (BHD)
20 Feb 2026 - 23 Feb 2026
From
£39.99
Seen: 4 hrs ago
Each way
Economy

Glasgow (GLA)to

Dublin (DUB)
9 Feb 2026 - 10 Feb 2026
From
£35.47
Seen: 2 hrs ago
Each way
Economy

Leeds (LBA)to

Belfast (BHD)
Depart: 9 Feb 2026
From
£51.28
Seen: 13 minutes ago
One way
Economy

Belfast (BHD)to

Manchester (MAN)
Depart: 9 Feb 2026
From
£39.99
Seen: 3 hrs ago
One way
Economy

Manchester (MAN)to

Bridgetown (BGI)
10 Mar 2026 - 24 Mar 2026
From
£440.17
Seen: 7 hrs ago
Roundtrip*
Economy

Leeds (LBA)to

Dublin (DUB)
15 Feb 2026 - 16 Feb 2026
From
£34.48
Seen: 2 hrs ago
Each way
Economy

Edinburgh (EDI)to

Belfast (BHD)
Depart: 19 Feb 2026
From
£39.99
Seen: 2 hrs ago
One way
Economy

Belfast (BHD)to

Edinburgh (EDI)
Depart: 31 Jan 2026
From
£39.99
Seen: 2 hrs ago
One way
Economy

Southampton (SOU)to

Dublin (DUB)
10 Feb 2026 - 11 Feb 2026
From
£50.52
Seen: 5 hrs ago
Each way
Economy

Belfast (BHD)to

Southampton (SOU)
18 Feb 2026 - 24 Feb 2026
From
£47.08
Seen: 1 hour ago
Each way
Economy