Flights from Portland, OR to Lisbon from $ 790*

Promotion Code

Changed bag rules and optional services         Cruise Packages

Featured daily fares for flights from Portland, OR (PDX) to Lisbon (LIS)

Mar 2026
From$ 790*
Viewed: 13 hours ago
RoundTrip|Economy
Apr 2026
From$ 863*
Viewed: 13 hours ago
RoundTrip|Economy
May 2026
From$ 1,043*
Viewed: 13 hours ago
RoundTrip|Economy
$ 790
$ 2.2K
Displaying fares for March-2026
  • 19

    Th

    MAR

  • 20

    Fr

  • 21

    Sa

  • 22

    Su

  • 23

    Mo

  • 24

    Tu

  • 25

    We

  • 26

    Th

  • 27

    Fr

  • 28

    Sa

  • 29

    Su

  • 30

    Mo

  • 31

    Tu

  • 01

    We

    APR

  • 02

    Th

  • 03

    Fr

  • 04

    Sa

  • 05

    Su

  • 06

    Mo

  • 07

    Tu

  • 08

    We

  • 09

    Th

  • 10

    Fr

  • 11

    Sa

  • 12

    Su

  • 13

    Mo

  • 14

    Tu

  • 15

    We

  • 16

    Th

  • 17

    Fr

  • 18

    Sa

    • Range$ 790-$ 2,245

    *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 Portland, OR (PDX) to Lisbon (LIS) flights

    $
    keyboard_arrow_down
    More United deals on Portland, OR (PDX) to Lisbon (LIS) flights
    From
    To
    Fare Type
    Dates
    Price
    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		11/05/26 - 11/14/26

    from

    $ 851

    Viewed: 1 day ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		11/05/26 - 11/14/26

    from

    $ 881

    Viewed: 1 day ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		03/31/26 - 04/14/26

    from

    $ 790

    Viewed: 13 hours ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		03/31/26 - 04/07/26

    from

    $ 812

    Viewed: 13 hours ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		04/03/26 - 04/17/26

    from

    $ 863

    Viewed: 13 hours ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		04/03/26 - 04/07/26

    from

    $ 872

    Viewed: 13 hours ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		04/21/26 - 04/28/26

    from

    $ 910

    Viewed: 13 hours ago

    Portland, OR (PDX)Lisbon (LIS)Roundtrip
    |
    Economy    		04/21/26 - 05/05/26

    from

    $ 919

    Viewed: 13 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