Cardiff to Boston Flights on Aer Lingus

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Book Cardiff to Boston flight deals*

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May 2026
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    • Aer Lingus Plane Image

    Book Cardiff to Boston 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)
    13 Jun 2026 - 13 Jun 2026
    From
    £62.98
    Seen: 15 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    New York (JFK)
    14 Nov 2026 - 12 Dec 2026
    From
    £262.41
    Seen: 22 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    Orlando (MCO)
    7 Jun 2026 - 21 Jun 2026
    From
    £284.65
    Seen: 5 hrs ago
    Each way
    Economy

    Birmingham (BHX)to

    Dublin (DUB)
    25 May 2026 - 29 May 2026
    From
    £29.27
    Seen: 12 hrs ago
    Each way
    Economy

    Birmingham (BHX)to

    Belfast (BHD)
    Depart: 11 Jul 2026
    From
    £39.38
    Seen: 18 hrs ago
    One way
    Economy

    London (LHR)to

    Cork (ORK)
    25 May 2026 - 2 Jun 2026
    From
    £70.10
    Seen: 16 hrs ago
    Each way
    Economy

    Belfast (BHD)to

    Birmingham (BHX)
    Depart: 22 May 2026
    From
    £39.99
    Seen: 12 hrs ago
    One way
    Economy

    Edinburgh (EDI)to

    Dublin (DUB)
    22 May 2026 - 25 May 2026
    From
    £39.95
    Seen: 11 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    Dublin (DUB)
    7 Jul 2026 - 10 Jul 2026
    From
    £45.25
    Seen: 22 hrs ago
    Each way
    Economy

    London (LHR)to

    Shannon (SNN)
    19 May 2026 - 26 May 2026
    From
    £51.36
    Seen: 4 hrs ago
    Each way
    Economy

    Leeds (LBA)to

    Belfast (BHD)
    Depart: 17 May 2026
    From
    £39.99
    Seen: 1 hour ago
    One way
    Economy

    Glasgow (GLA)to

    Dublin (DUB)
    19 May 2026 - 26 May 2026
    From
    £34.94
    Seen: 6 hrs ago
    Each way
    Economy

    Southampton (SOU)to

    Dublin (DUB)
    15 May 2026 - 17 May 2026
    From
    £39.77
    Seen: 7 hrs ago
    Each way
    Economy

    Manchester (MAN)to

    Belfast (BHD)
    26 May 2026 - 28 May 2026
    From
    £39.99
    Seen: 15 hrs ago
    Each way
    Economy

    Belfast (BHD)to

    Manchester (MAN)
    Depart: 19 May 2026
    From
    £39.99
    Seen: 6 hrs ago
    One way
    Economy

    Southampton (SOU)to

    Belfast (BHD)
    21 May 2026 - 25 May 2026
    From
    £45.99
    Seen: 15 hrs ago
    Each way
    Economy

    Bristol (BRS)to

    Dublin (DUB)
    21 May 2026 - 28 May 2026
    From
    £30.81
    Seen: 13 hrs ago
    Each way
    Economy

    Edinburgh (EDI)to

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

    Belfast (BHD)to

    Southampton (SOU)
    26 Jul 2026 - 3 Aug 2026
    From
    £45.12
    Seen: 15 hrs ago
    Each way
    Economy

    Belfast (BHD)to

    Edinburgh (EDI)
    Depart: 23 May 2026
    From
    £39.99
    Seen: 12 hrs ago
    One way
    Economy