Flights from Lisbon to Boston from $ 782*

Promotion Code

Changed bag rules and optional services         Cruise Packages

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

Try alternate month or interact with individual days below in order to find offers.
Apr 2026
No result for this month
May 2026
From$ 865*
Viewed: 19 hours ago
RoundTrip|Economy
Jun 2026
From$ 782*
Viewed: 2 hours ago
RoundTrip|Economy
$ 865
Displaying fares for April-2026
  • 21

    Tu

    APR

  • 22

    We

  • 23

    Th

  • 24

    Fr

  • 25

    Sa

  • 26

    Su

  • 27

    Mo

  • 28

    Tu

  • 29

    We

  • 30

    Th

  • 01

    Fr

    MAY

  • 02

    Sa

  • 03

    Su

  • 04

    Mo

  • 05

    Tu

  • 06

    We

  • 07

    Th

  • 08

    Fr

  • 09

    Sa

  • 10

    Su

  • 11

    Mo

  • 12

    Tu

  • 13

    We

  • 14

    Th

  • 15

    Fr

  • 16

    Sa

  • 17

    Su

  • 18

    Mo

  • 19

    Tu

  • 20

    We

    • Range$ 865

    *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 Lisbon (LIS) to Boston (BOS) flights

    $
    keyboard_arrow_down
    More United deals on Lisbon (LIS) to Boston (BOS) flights
    From
    To
    Fare Type
    Dates
    Price
    Lisbon (LIS)Boston (BOS)Roundtrip
    |
    Economy    		06/06/26 - 06/10/26

    from

    $ 782

    Viewed: 2 hours ago

    Lisbon (LIS)Boston (BOS)Roundtrip
    |
    Economy    		05/11/26 - 05/14/26

    from

    $ 865

    Viewed: 19 hours ago

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

    from

    $ 993

    Viewed: 2 hours ago

    Lisbon (LIS)Boston (BOS)Roundtrip
    |
    Economy    		05/11/26 - 05/14/26

    from

    $ 1,068

    Viewed: 19 hours ago

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

    from

    $ 1,302

    Viewed: 2 hours ago

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

    from

    $ 1,406

    Viewed: 2 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.

    Explore United Airlines's Top-Pick Destinations

    Explore more United flights