Cardiff to Seattle Flights on Aer Lingus

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Book Cardiff to Seattle flight deals*

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May 2026
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    • Aer Lingus Plane Image

    Book Cardiff 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.

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    £

    London (LHR)to

    Dublin (DUB)
    5 Jun 2026 - 14 Jun 2026
    From
    £62.99
    Seen: 3 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    New York (JFK)
    18 May 2026 - 25 May 2026
    From
    £261.36
    Seen: 6 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    Orlando (MCO)
    1 Oct 2026 - 15 Oct 2026
    From
    £282.93
    Seen: 6 hrs ago
    Each way
    Economy

    Birmingham (BHX)to

    Dublin (DUB)
    13 May 2026 - 18 May 2026
    From
    £29.29
    Seen: 2 hrs ago
    Each way
    Economy

    Edinburgh (EDI)to

    Dublin (DUB)
    14 May 2026 - 19 May 2026
    From
    £41.97
    Seen: 6 hrs ago
    Each way
    Economy

    Birmingham (BHX)to

    Belfast (BHD)
    Depart: 21 May 2026
    From
    £39.99
    Seen: 4 hrs ago
    One way
    Economy

    London (LHR)to

    Cork (ORK)
    10 Jun 2026 - 20 Jun 2026
    From
    £72.69
    Seen: 12 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    Dublin (DUB)
    1 Jul 2026 - 6 Jul 2026
    From
    £45.26
    Seen: 5 hrs ago
    Each way
    Economy

    London (LHR)to

    Shannon (SNN)
    26 May 2026 - 27 May 2026
    From
    £51.37
    Seen: 11 hrs ago
    Each way
    Economy

    Southampton (SOU)to

    Belfast (BHD)
    11 May 2026 - 13 May 2026
    From
    £45.99
    Seen: 3 hrs ago
    Each way
    Economy

    Leeds (LBA)to

    Belfast (BHD)
    Depart: 21 May 2026
    From
    £39.99
    Seen: 4 hrs ago
    One way
    Economy

    Belfast (BHD)to

    Birmingham (BHX)
    Depart: 30 May 2026
    From
    £39.99
    Seen: 4 hrs ago
    One way
    Economy

    Glasgow (GLA)to

    Dublin (DUB)
    22 May 2026 - 25 May 2026
    From
    £39.95
    Seen: 4 hrs ago
    Each way
    Economy

    Southampton (SOU)to

    Dublin (DUB)
    6 Nov 2026 - 9 Nov 2026
    From
    £59.05
    Seen: 7 hrs ago
    Each way
    Economy

    Belfast (BHD)to

    Southampton (SOU)
    26 May 2026 - 30 May 2026
    From
    £45.99
    Seen: 4 hrs ago
    Each way
    Economy

    Edinburgh (EDI)to

    Belfast (BHD)
    Depart: 26 May 2026
    From
    £39.99
    Seen: 3 hrs ago
    One way
    Economy

    Belfast (BHD)to

    Edinburgh (EDI)
    Depart: 17 May 2026
    From
    £39.99
    Seen: 3 hrs ago
    One way
    Economy

    Bristol (BRS)to

    Cork (ORK)
    13 Jul 2026 - 25 Jul 2026
    From
    £60.51
    Seen: 4 hrs ago
    Each way
    Economy

    Bristol (BRS)to

    Dublin (DUB)
    21 May 2026 - 25 May 2026
    From
    £35.32
    Seen: 4 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    Belfast (BHD)
    18 May 2026 - 19 May 2026
    From
    £39.99
    Seen: 3 hrs ago
    Each way
    Economy