Boston to London Flights on Aer Lingus from $646.99*

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Book Boston to London flight deals*

Mar 2026
From$679.93*
Seen: 15 hrs ago
Flight Type Round Trip/Economy
Apr 2026
From$684.46*
Seen: 1 hour ago
Flight Type Round Trip/Economy
May 2026
From$740.00*
Seen: 4 hrs ago
Flight Type Round Trip/Economy
$679.93
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    • Range$679.93-$2,272.34

    * 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    		29 Sep 2026 - 16 Oct 2026

    From

    $646.99

    Seen: 21 hrs ago

    Boston (BOS)London (LON)Roundtrip*
    /
    Economy    		2 Oct 2026 - 16 Oct 2026

    From

    $646.99

    Seen: 21 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    		29 Sep 2026 - 16 Oct 2026

    From

    $646.99

    Seen: 21 hrs ago

    Boston (BOS)London (LON)Roundtrip*
    /
    Economy    		2 Oct 2026 - 16 Oct 2026

    From

    $646.99

    Seen: 21 hrs ago

    Explore other routes

    QA FE Test Travel Dates Filter Feature Prepro

    Boston (BOS)to

    Dublin (DUB)
    3 Sep 2026 - 8 Sep 2026
    From
    $510.21
    Seen: 20 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    Malaga (AGP)
    Depart: 26 Apr 2026
    From
    €56.25
    Seen: 4 hrs ago
    One way
    Economy

    Chicago (ORD)to

    Dublin (DUB)
    6 May 2026 - 11 May 2026
    From
    $595.21
    Seen: 21 hrs ago
    Roundtrip*
    Economy

    New York (JFK)to

    Dublin (DUB)
    2 May 2026 - 7 May 2026
    From
    $510.21
    Seen: 19 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    New York (JFK)
    9 Jun 2026 - 25 Jun 2026
    From
    €225.75
    Seen: 10 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    London (LHR)
    Depart: 19 May 2026
    From
    €59.25
    Seen: 6 hrs ago
    One way
    Economy

    Indianapolis (IND)to

    Dublin (DUB)
    2 May 2026 - 8 May 2026
    From
    $673.21
    Seen: 18 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    Faro (FAO)
    Depart: 24 Mar 2026
    From
    €55.00
    Seen: 14 minutes ago
    One way
    Economy

    Dublin (DUB)to

    Orlando (MCO)
    27 Apr 2026 - 10 May 2026
    From
    €252.75
    Seen: 10 hrs ago
    Each way
    Economy

    Dublin (DUB)to

    Paris (CDG)
    Depart: 8 Apr 2026
    From
    €51.25
    Seen: 1 hour ago
    One way
    Economy

    Cleveland (CLE)to

    Dublin (DUB)
    2 May 2026 - 13 May 2026
    From
    $575.21
    Seen: 21 hrs ago
    Roundtrip*
    Economy

    Boston (BOS)to

    Shannon (SNN)
    2 May 2026 - 12 May 2026
    From
    $509.78
    Seen: 23 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    Lanzarote (ACE)
    Depart: 26 Apr 2026
    From
    €76.25
    Seen: 7 hrs ago
    One way
    Economy

    Los Angeles (LAX)to

    Dublin (DUB)
    6 Sep 2026 - 18 Sep 2026
    From
    $740.21
    Seen: 21 hrs ago
    Roundtrip*
    Economy

    San Francisco (SFO)to

    Dublin (DUB)
    4 Sep 2026 - 12 Sep 2026
    From
    $740.21
    Seen: 23 hrs ago
    Roundtrip*
    Economy

    Dublin (DUB)to

    Amsterdam (AMS)
    Depart: 22 Apr 2026
    From
    €43.65
    Seen: 3 hrs ago
    One way
    Economy

    Washington, D.C. (IAD)to

    Dublin (DUB)
    7 May 2026 - 10 May 2026
    From
    $575.21
    Seen: 21 hrs ago
    Roundtrip*
    Economy

    Raleigh (RDU)to

    Dublin (DUB)
    5 May 2026 - 10 May 2026
    From
    $595.21
    Seen: 22 hrs ago
    Roundtrip*
    Economy

    Philadelphia (PHL)to

    Dublin (DUB)
    3 May 2026 - 13 May 2026
    From
    $595.21
    Seen: 20 hrs ago
    Roundtrip*
    Economy

    Pittsburgh (PIT)to

    Dublin (DUB)
    2 Sep 2026 - 6 Sep 2026
    From
    $575.21
    Seen: 22 hrs ago
    Roundtrip*
    Economy