Boston to London Flights on Aer Lingus from $729.89*

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Book Boston to London flight deals*

Apr 2026
From$823.02*
Seen: 14 hrs ago
Flight Type Round Trip/Economy
May 2026
From$892.82*
Seen: 22 hrs ago
Flight Type Round Trip/Economy
Jun 2026
From$892.93*
Seen: 11 hrs ago
Flight Type Round Trip/Economy
$823.02
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    • Range$823.02-$2,199.54

    * 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.

    Aer Lingus Plane Image

    Book Boston to London flight deals*

    Book Boston to London flight deals*
    From
    To
    Fare Type
    Dates
    Price
    Boston (BOS)London (LHR)Roundtrip*
    /
    Economy    		5 Mar 2027 - 12 Mar 2027

    From

    $729.89

    Seen: 13 hrs ago

    Boston (BOS)London (LON)Roundtrip*
    /
    Economy    		19 Dec 2026 - 22 Jan 2027

    From

    $937.10

    Seen: 11 hrs ago

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

    Testing Each way

    Testing Each way
    From
    To
    Fare Type
    Dates
    Price
    Boston (BOS)London (LHR)Roundtrip*
    /
    Economy    		5 Mar 2027 - 12 Mar 2027

    From

    $729.89

    Seen: 13 hrs ago

    Boston (BOS)London (LON)Roundtrip*
    /
    Economy    		25 Aug 2026 - 31 Aug 2026

    From

    $737.56

    Seen: 10 hrs ago

    Explore other routes

    QA FE Test Travel Dates Filter Feature Prepro

    Dublin (DUB)to

    New York (JFK)
    25 Jun 2026 - 30 Jun 2026
    From
    €225.00
    Seen: 19 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    Malaga (AGP)
    Depart: 26 Apr 2026
    From
    €56.25
    Seen: 29 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Orlando (MCO)
    28 Apr 2026 - 7 May 2026
    From
    €252.00
    Seen: 20 hrs ago
    Each way
    Economy

    Raleigh (RDU)to

    Dublin (DUB)
    8 Sep 2026 - 15 Sep 2026
    From
    $696.70
    Seen: 23 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    London (LHR)
    Depart: 16 May 2026
    From
    €55.15
    Seen: 36 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Paris (CDG)
    Depart: 28 Apr 2026
    From
    €60.25
    Seen: 1 hour ago
    One way
    Economy

    Dublin (DUB)to

    Faro (FAO)
    Depart: 26 Apr 2026
    From
    €69.25
    Seen: 46 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Boston (BOS)
    5 Jun 2026 - 30 Jun 2026
    From
    €225.00
    Seen: 19 hrs ago
    Each way
    Economy

    Boston (BOS)to

    Dublin (DUB)
    2 Sep 2026 - 8 Sep 2026
    From
    $575.70
    Seen: 16 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    Cancun (CUN)
    Depart: 13 Jun 2026
    From
    €671.67
    Seen: 18 hrs ago
    One way
    Economy

    Dublin (DUB)to

    Lanzarote (ACE)
    Depart: 26 Apr 2026
    From
    €89.25
    Seen: 10 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Chicago (ORD)
    4 Jun 2026 - 8 Jun 2026
    From
    €279.00
    Seen: 20 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    Toronto (YYZ)
    13 Oct 2026 - 27 Oct 2026
    From
    €222.66
    Seen: 16 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    Rome (FCO)
    Depart: 22 Apr 2026
    From
    €76.18
    Seen: 57 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Nashville (BNA)
    8 Oct 2026 - 13 Oct 2026
    From
    €242.00
    Seen: 20 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    Amsterdam (AMS)
    Depart: 13 May 2026
    From
    €43.65
    Seen: 5 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Las Vegas (LAS)
    2 Oct 2026 - 16 Oct 2026
    From
    €262.00
    Seen: 4 hrs ago
    Each way
    Economy

    London (LHR)to

    Dublin (DUB)
    19 May 2026 - 19 May 2026
    From
    £59.18
    Seen: 2 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    Los Angeles (LAX)
    26 Apr 2026 - 26 May 2026
    From
    €262.00
    Seen: 20 hrs ago
    Each way
    Economy

    Chicago (ORD)to

    Dublin (DUB)
    1 Sep 2026 - 13 Nov 2026
    From
    $692.02
    Seen: 20 hrs ago
    Roundtrip*
    Economy