San Francisco (SFO) to Porto (OPO) flights from USD743

*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 USD902
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.4K
Displaying fares for August-2026
  • SFO–OPO, 08/27/2026 – 09/10/2026: From USD1,114
    27

    Th

    AUG

  • SFO–OPO, 08/28/2026 – 09/11/2026: From USD1,114
    28

    Fr

  • SFO–OPO, 08/29/2026 – 09/05/2026: From USD1,174
    29

    Sa

  • SFO–OPO, 08/30/2026 – 09/06/2026: From USD1,104
    30

    Su

  • SFO–OPO, 08/31/2026 – 09/21/2026: From USD1,115
    31

    Mo

  • SFO–OPO, 09/01/2026 – 09/08/2026: From USD1,054
    01

    Tu

    SEP

  • SFO–OPO, 09/02/2026 – 09/23/2026: From USD1,054
    02

    We

  • SFO–OPO, 09/03/2026 – 09/17/2026: From USD1,193
    03

    Th

  • SFO–OPO, 09/04/2026 – 09/11/2026: From USD1,305
    04

    Fr

  • SFO–OPO, 09/05/2026 – 09/26/2026: From USD1,184
    05

    Sa

  • SFO–OPO, 09/06/2026 – 09/20/2026: From USD1,115
    06

    Su

  • SFO–OPO, 09/07/2026 – 10/05/2026: From USD1,104
    07

    Mo

  • SFO–OPO, 09/08/2026 – 09/22/2026: From USD1,044
    08

    Tu

  • SFO–OPO, 09/09/2026 – 09/16/2026: From USD1,045
    09

    We

  • SFO–OPO, 09/10/2026 – 09/17/2026: From USD1,114
    10

    Th

  • SFO–OPO, 09/11/2026 – 09/25/2026: From USD1,122
    11

    Fr

  • SFO–OPO, 09/12/2026 – 09/26/2026: From USD1,189
    12

    Sa

  • SFO–OPO, 09/13/2026 – 10/11/2026: From USD1,104
    13

    Su

  • SFO–OPO, 09/14/2026 – 10/12/2026: From USD1,104
    14

    Mo

  • SFO–OPO, 09/15/2026 – 09/22/2026: From USD1,044
    15

    Tu

  • SFO–OPO, 09/16/2026 – 09/23/2026: From USD1,054
    16

    We

  • SFO–OPO, 09/17/2026 – 10/15/2026: From USD1,372
    17

    Th

  • SFO–OPO, 09/18/2026 – 10/16/2026: From USD1,372
    18

    Fr

  • SFO–OPO, 09/19/2026 – 09/26/2026: From USD1,072
    19

    Sa

  • SFO–OPO, 09/20/2026 – 10/11/2026: From USD993
    20

    Su

  • SFO–OPO, 09/21/2026 – 10/05/2026: From USD993
    21

    Mo

  • SFO–OPO, 09/22/2026 – 09/29/2026: From USD933
    22

    Tu

  • SFO–OPO, 09/23/2026 – 10/14/2026: From USD1,046
    23

    We

  • SFO–OPO, 09/24/2026 – 10/01/2026: From USD902
    24

    Th

  • SFO–OPO, 09/25/2026 – 10/16/2026: From USD1,023
    25

    Fr

  • SFO–OPO, 09/26/2026 – 10/10/2026: From USD979
    26

    Sa

  • RangeUSD902-USD1,372