Flights from San Francisco to Porto from USD 668

Promo Code

Flights from San Francisco to Porto

Discover the cheapest day and month to travel

Sep 2026
FromUSD 1,076*
Viewed 1 day ago
Flight Type Round Trip|Economy
Oct 2026
FromUSD 668*
Viewed 12 hours ago
Flight Type Round Trip|Economy
Nov 2026
FromUSD 1,309*
Viewed 1 day ago
Flight Type Round Trip|Economy
cmp-daily-histogram-bars-legend-min-price-aria-label USD 1.1K
Displaying fares for September-2026
  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    05

    Sa

    SEP

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    06

    Su

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    07

    Mo

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    08

    Tu

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    09

    We

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    10

    Th

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    11

    Fr

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    12

    Sa

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    13

    Su

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    14

    Mo

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    15

    Tu

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    16

    We

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    17

    Th

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    18

    Fr

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    19

    Sa

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    20

    Su

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    21

    Mo

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    22

    Tu

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    23

    We

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    24

    Th

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    25

    Fr

  • SFO–OPO, 26/09/2026 – 17/10/2026: From USD 1,076
    26

    Sa

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    27

    Su

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    28

    Mo

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    29

    Tu

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    30

    We

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    01

    Th

    OCT

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    02

    Fr

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    03

    Sa

  • SFO–OPO: cmp-view-offers-disclaimer. Find Offers
    04

    Su

    • RangeUSD 1,076

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

    Best Flight Deals from San Francisco to Porto

    USD
    keyboard_arrow_down
    Best Flight Deals from San Francisco to Porto
    From
    To
    Fare Type
    Dates
    Price
    San Francisco (SFO)Porto (OPO)Round trip
    |
    Economy    		06/10/2026 - 18/10/2026

    From

    USD 668

    Viewed 12 hours ago

    San Francisco (SFO)Porto (OPO)Round trip
    |
    Economy    		03/03/2027 - 10/03/2027

    From

    USD 677

    Viewed 1 day ago

    San Francisco (SFO)Porto (OPO)Round trip
    |
    Economy    		10/10/2026 - 26/10/2026

    From

    USD 678

    Viewed 1 day ago

    San Francisco (SFO)Porto (OPO)Round trip
    |
    Economy    		01/06/2027 - 15/06/2027

    From

    USD 946

    Viewed 1 day ago

    San Francisco (SFO)Porto (OPO)Round trip
    |
    Economy    		21/11/2026 - 29/11/2026

    From

    USD 1,309

    Viewed 1 day ago

    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

    Make a free Stopover in Portugal

    Stay up to 10 days in Lisbon or Porto at no extra flight cost and enjoy 500+ partner offers.

    Book Now
    Passengers sitting inside an airplane cabin

    Business Flights Deals

    USD

    San Francisco (SFO)to

    Porto (OPO)
    06/10/2026 - 18/10/2026

    Round trip

    Business

    From
    USD 7,287
    Viewed 12 hours ago

    San Francisco (SFO)to

    Porto (OPO)
    21/11/2026 - 29/11/2026

    Round trip

    Business

    From
    USD 7,297
    Viewed 1 day ago
    *The fares shown have been updated in the last 48 hours and may no longer be available at the time of booking. Additional fees and charges may apply for optional products and services.

    See More TAP Air Portugal Flights

    Explore TAP's Top-Pick Destinations