Flights from Boston to Lisbon from $ 1,000*

Promotion Code

Changed bag rules and optional services         Cruise Packages

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

Apr 2026
From$ 1,000*
Viewed: 19 hours ago
RoundTrip|Economy
May 2026
From$ 1,051*
Viewed: 19 hours ago
RoundTrip|Economy
Jun 2026
From$ 1,723*
Viewed: 19 hours ago
RoundTrip|Economy
$ 1,000
$ 2.1K
Displaying fares for April-2026
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    • Range$ 1,000-$ 2,075

    *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    		04/29/26 - 05/06/26

    from

    $ 1,000

    Viewed: 19 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		04/28/26 - 05/05/26

    from

    $ 1,019

    Viewed: 19 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		04/27/26 - 05/04/26

    from

    $ 1,050

    Viewed: 19 hours ago

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

    from

    $ 1,051

    Viewed: 19 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		04/26/26 - 05/10/26

    from

    $ 1,052

    Viewed: 19 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		05/03/26 - 05/10/26

    from

    $ 1,052

    Viewed: 19 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		04/29/26 - 05/03/26

    from

    $ 1,056

    Viewed: 19 hours ago

    Boston (BOS)Lisbon (LIS)Roundtrip
    |
    Economy    		04/26/26 - 05/03/26

    from

    $ 1,056

    Viewed: 19 hours 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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