Flights from Boston to Lisbon from $ 1,024*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Boston (BOS) to Lisbon (LIS)

Apr 2026
From$ 1,824*
Viewed: 20 hours ago
RoundTrip|Economy
May 2026
From$ 1,051*
Viewed: 20 hours ago
RoundTrip|Economy
Jun 2026
From$ 1,724*
Viewed: 20 hours ago
RoundTrip|Economy
$ 1.1K
$ 1.9K
Displaying fares for April-2026
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    • Range$ 1,051-$ 1,946

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

    More United deals on Boston (BOS) to Lisbon (LIS) flights

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    More United deals on Boston (BOS) to Lisbon (LIS) flights
    From
    To
    Fare Type
    Dates
    Price
    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		03/13/27 - 03/20/27

    from

    $ 1,024

    Viewed: 8 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		08/14/26 - 08/21/26

    from

    $ 1,119

    Viewed: 9 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		03/13/27 - 03/20/27

    from

    $ 1,241

    Viewed: 8 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		05/06/26 - 05/10/26

    from

    $ 1,051

    Viewed: 20 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		02/24/27 - 02/28/27

    from

    $ 1,125

    Viewed: 21 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		07/19/26 - 08/02/26

    from

    $ 1,130

    Viewed: 20 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		07/19/26 - 07/26/26

    from

    $ 1,130

    Viewed: 20 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		08/09/26 - 08/30/26

    from

    $ 1,164

    Viewed: 1 day ago

    *Prices have been available for round trips within the last 48 hours and may not be currently available. For Economy class, fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply. Schedules are subject to change without notice.

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