San Francisco (SFO) to Porto (OPO) flights from USD738

*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 USD933
cmp-daily-histogram-bars-legend-max-price-aria-label USD1.4K
Displaying fares for September-2026
  • SFO–OPO, 09/05/2026 – 09/19/2026: From USD1,184
    05

    Sa

    SEP

  • SFO–OPO, 09/06/2026 – 09/20/2026: From USD1,114
    06

    Su

  • SFO–OPO, 09/07/2026 – 09/28/2026: 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 USD1,053
    09

    We

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

    Th

  • SFO–OPO, 09/11/2026 – 09/18/2026: From USD1,114
    11

    Fr

  • SFO–OPO, 09/12/2026 – 09/19/2026: From USD1,188
    12

    Sa

  • SFO–OPO, 09/13/2026 – 09/20/2026: From USD1,114
    13

    Su

  • SFO–OPO, 09/14/2026 – 09/28/2026: 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 USD1,048
    16

    We

  • SFO–OPO, 09/17/2026 – 09/24/2026: From USD1,379
    17

    Th

  • SFO–OPO, 09/18/2026 – 09/25/2026: From USD1,382
    18

    Fr

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

    Sa

  • SFO–OPO, 09/20/2026 – 10/04/2026: From USD1,010
    20

    Su

  • SFO–OPO, 09/21/2026 – 09/28/2026: 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 USD996
    23

    We

  • SFO–OPO, 09/24/2026 – 10/08/2026: From USD993
    24

    Th

  • SFO–OPO, 09/25/2026 – 10/23/2026: From USD1,059
    25

    Fr

  • SFO–OPO, 09/26/2026 – 10/10/2026: From USD1,075
    26

    Sa

  • SFO–OPO, 09/27/2026 – 10/04/2026: From USD1,010
    27

    Su

  • SFO–OPO, 09/28/2026 – 10/26/2026: From USD993
    28

    Mo

  • SFO–OPO, 09/29/2026 – 10/06/2026: From USD933
    29

    Tu

  • SFO–OPO, 09/30/2026 – 10/21/2026: From USD1,136
    30

    We

  • SFO–OPO, 10/01/2026 – 10/22/2026: From USD1,327
    01

    Th

    OCT

  • SFO–OPO, 10/02/2026 – 10/23/2026: From USD1,155
    02

    Fr

  • SFO–OPO, 10/03/2026 – 10/31/2026: From USD961
    03

    Sa

  • SFO–OPO, 10/04/2026 – 11/01/2026: From USD942
    04

    Su

  • RangeUSD933-USD1,382