San Francisco (SFO) to Porto (OPO) flights from USD737

*Modifying this information may result in a different fare

*All amounts are in USD. Taxes and surcharges are included. No booking fee is applicable. Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional baggage fees may apply.

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Lowest fares between San Francisco and Porto

cmp-daily-histogram-bars-legend-min-price-aria-label USD787
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.1K
Displaying fares for September-2026
  • SFO–OPO, 09/26/2026 – 10/24/2026: From USD1,070
    26

    Sa

    SEP

  • SFO–OPO, 09/27/2026 – 10/11/2026: From USD1,009
    27

    Su

  • SFO–OPO, 09/28/2026 – 10/19/2026: From USD932
    28

    Mo

  • SFO–OPO, 09/29/2026 – 10/06/2026: From USD932
    29

    Tu

  • SFO–OPO, 09/30/2026 – 10/07/2026: From USD1,000
    30

    We

  • SFO–OPO, 10/01/2026 – 10/15/2026: From USD1,126
    01

    Th

    OCT

  • SFO–OPO, 10/02/2026 – 10/09/2026: From USD1,058
    02

    Fr

  • SFO–OPO, 10/03/2026 – 10/10/2026: From USD1,070
    03

    Sa

  • SFO–OPO, 10/04/2026 – 11/01/2026: From USD992
    04

    Su

  • SFO–OPO, 10/05/2026 – 10/19/2026: From USD932
    05

    Mo

  • SFO–OPO, 10/06/2026 – 10/13/2026: From USD932
    06

    Tu

  • SFO–OPO, 10/07/2026 – 10/14/2026: From USD936
    07

    We

  • SFO–OPO, 10/08/2026 – 10/15/2026: From USD1,126
    08

    Th

  • SFO–OPO, 10/09/2026 – 11/06/2026: From USD1,002
    09

    Fr

  • SFO–OPO, 10/10/2026 – 11/07/2026: From USD1,052
    10

    Sa

  • SFO–OPO, 10/11/2026 – 11/01/2026: From USD992
    11

    Su

  • SFO–OPO, 10/12/2026 – 10/19/2026: From USD932
    12

    Mo

  • SFO–OPO, 10/13/2026 – 10/20/2026: From USD946
    13

    Tu

  • SFO–OPO, 10/14/2026 – 10/21/2026: From USD942
    14

    We

  • SFO–OPO, 10/15/2026 – 10/22/2026: From USD996
    15

    Th

  • SFO–OPO, 10/16/2026 – 10/19/2026: From USD1,122
    16

    Fr

  • SFO–OPO, 10/17/2026 – 11/07/2026: From USD1,061
    17

    Sa

  • SFO–OPO, 10/18/2026 – 11/08/2026: From USD1,003
    18

    Su

  • SFO–OPO, 10/19/2026 – 11/16/2026: From USD952
    19

    Mo

  • SFO–OPO, 10/20/2026 – 11/17/2026: From USD953
    20

    Tu

  • SFO–OPO, 10/21/2026 – 11/11/2026: From USD956
    21

    We

  • SFO–OPO, 10/22/2026 – 11/19/2026: From USD1,003
    22

    Th

  • SFO–OPO, 10/23/2026 – 11/20/2026: From USD796
    23

    Fr

  • SFO–OPO, 10/24/2026 – 11/07/2026: From USD951
    24

    Sa

  • SFO–OPO, 10/25/2026 – 11/22/2026: From USD787
    25

    Su

  • RangeUSD787-USD1,126