Flights from United States to to Portugal from $ 375*

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Best prices for United flights from United States to Portugal

$
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  • Washington, D.C. (IAD)to

    Lisbon (LIS)
    01/02/26 - 01/16/26
    from
    $ 1,076
    Viewed: 10 hours ago
    Roundtrip
    Economy

    Denver (DEN)to

    Lisbon (LIS)
    12/30/25 - 01/13/26
    from
    $ 567
    Viewed: 12 hours ago
    Roundtrip
    Economy

    Houston (IAH)to

    Lisbon (LIS)
    12/31/25 - 01/14/26
    from
    $ 551
    Viewed: 11 hours ago
    Roundtrip
    Economy

    Los Angeles (LAX)to

    Lisbon (LIS)
    12/09/25 - 12/16/25
    from
    $ 483
    Viewed: 5 hours ago
    Roundtrip
    Economy

  • Newark/New York (EWR)to

    Funchal (FNC)
    12/10/25 - 12/17/25
    from
    $ 1,469
    Viewed: 12 hours ago
    Roundtrip
    Economy

    Boston (BOS)to

    Lisbon (LIS)
    12/29/25 - 01/12/26
    from
    $ 957
    Viewed: 12 hours ago
    Roundtrip
    Economy

    Newark/New York (EWR)to

    Faro (FAO)
    01/01/26 - 01/15/26
    from
    $ 1,143
    Viewed: 8 hours ago
    Roundtrip
    Economy

    Newark/New York (EWR)to

    Ponta Delgada (PDL)
    12/30/25 - 01/13/26
    from
    $ 1,190
    Viewed: 8 hours ago
    Roundtrip
    Economy

  • San Diego (SAN)to

    Lisbon (LIS)
    12/09/25 - 12/16/25
    from
    $ 492
    Viewed: 10 hours ago
    Roundtrip
    Economy

    Chicago (ORD)to

    Porto (OPO)
    12/31/25 - 01/14/26
    from
    $ 686
    Viewed: 1 hour ago
    Roundtrip
    Economy

    Dallas (DFW)to

    Lisbon (LIS)
    12/09/25 - 12/23/25
    from
    $ 498
    Viewed: 12 hours ago
    Roundtrip
    Economy

    Tampa (TPA)to

    Lisbon (LIS)
    12/31/25 - 01/14/26
    from
    $ 541
    Viewed: 9 hours ago
    Roundtrip
    Economy

  • San Francisco (SFO)to

    Porto (OPO)
    01/02/26 - 01/16/26
    from
    $ 878
    Viewed: 36 minutes ago
    Roundtrip
    Economy

    Charlotte (CLT)to

    Lisbon (LIS)
    12/31/25 - 01/14/26
    from
    $ 519
    Viewed: 12 hours ago
    Roundtrip
    Economy

    Los Angeles (LAX)to

    Porto (OPO)
    12/31/25 - 01/14/26
    from
    $ 1,129
    Viewed: 37 minutes ago
    Roundtrip
    Economy

    Orlando (MCO)to

    Lisbon (LIS)
    12/31/25 - 01/14/26
    from
    $ 532
    Viewed: 10 hours ago
    Roundtrip
    Economy

*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.

Best business class fares from United States to to Portugal

$

Newark/New York (EWR)to

Lisbon (LIS)
12/30/25 - 01/13/26

Roundtrip

Business

from
$ 3,050
Viewed: 9 hours ago

Newark/New York (EWR)to

Porto (OPO)
07/14/26 - 08/05/26

Roundtrip

Business

from
$ 2,999
Viewed: 5 hours ago

San Francisco (SFO)to

Lisbon (LIS)
12/25/25 - 01/14/26

Roundtrip

Business

from
$ 3,545
Viewed: 12 hours ago

Chicago (ORD)to

Lisbon (LIS)
04/01/26 - 04/09/26

Roundtrip

Business

from
$ 3,575
Viewed: 13 hours ago

Washington, D.C. (IAD)to

Lisbon (LIS)
01/08/26 - 01/14/26

Roundtrip

Business

from
$ 2,960
Viewed: 10 hours ago

Denver (DEN)to

Lisbon (LIS)
12/29/25 - 01/13/26

Roundtrip

Business

from
$ 3,508
Viewed: 4 hours ago

Houston (IAH)to

Lisbon (LIS)
04/15/26 - 05/06/26

Roundtrip

Business

from
$ 4,640
Viewed: 3 hours ago

Los Angeles (LAX)to

Lisbon (LIS)
01/06/26 - 01/13/26

Roundtrip

Business

from
$ 3,057
Viewed: 17 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 more United flights from United States to to Portugal