Flights San Francisco – Porto (SFO-OPO) from $738*

*Modifying this information may result in a different fare

Book flights from San Francisco to Porto

Sep 2026
From$933*
Seen: 5 hrs ago
Round-trip/Economy
Oct 2026
From$738*
Seen: 9 hrs ago
Round-trip/Economy
Nov 2026
From$738*
Seen: 4 hrs ago
Round-trip/Economy
cmp-daily-histogram-bars-legend-min-price-aria-label $788
cmp-daily-histogram-bars-legend-max-price-aria-label $1.4K
Displaying fares for September-2026
  • SFO–OPO, 09/07/2026 – 09/28/2026: From $1,104
    07

    Mo

    sep

  • SFO–OPO, 09/08/2026 – 09/22/2026: From $1,044
    08

    Tu

  • SFO–OPO, 09/09/2026 – 09/16/2026: From $1,049
    09

    We

  • SFO–OPO, 09/10/2026 – 09/24/2026: From $1,118
    10

    Th

  • SFO–OPO, 09/11/2026 – 09/18/2026: From $1,114
    11

    Fr

  • SFO–OPO, 09/12/2026 – 09/19/2026: From $1,188
    12

    Sa

  • SFO–OPO, 09/13/2026 – 10/11/2026: From $1,238
    13

    Su

  • SFO–OPO, 09/14/2026 – 09/28/2026: From $1,104
    14

    Mo

  • SFO–OPO, 09/15/2026 – 10/06/2026: From $1,044
    15

    Tu

  • SFO–OPO, 09/16/2026 – 09/30/2026: From $1,044
    16

    We

  • SFO–OPO, 09/17/2026 – 10/08/2026: From $1,375
    17

    Th

  • SFO–OPO, 09/18/2026 – 09/25/2026: From $1,199
    18

    Fr

  • SFO–OPO, 09/19/2026 – 09/26/2026: From $1,072
    19

    Sa

  • SFO–OPO, 09/20/2026 – 10/11/2026: From $1,127
    20

    Su

  • SFO–OPO, 09/21/2026 – 09/28/2026: From $993
    21

    Mo

  • SFO–OPO, 09/22/2026 – 10/13/2026: From $933
    22

    Tu

  • SFO–OPO, 09/23/2026 – 10/07/2026: From $942
    23

    We

  • SFO–OPO, 09/24/2026 – 10/22/2026: From $993
    24

    Th

  • SFO–OPO, 09/25/2026 – 10/23/2026: From $1,000
    25

    Fr

  • SFO–OPO, 09/26/2026 – 10/24/2026: From $1,070
    26

    Sa

  • SFO–OPO, 09/27/2026 – 10/11/2026: From $1,127
    27

    Su

  • SFO–OPO, 09/28/2026 – 10/05/2026: From $1,003
    28

    Mo

  • SFO–OPO, 09/29/2026 – 10/13/2026: From $933
    29

    Tu

  • SFO–OPO, 09/30/2026 – 10/14/2026: From $1,315
    30

    We

  • SFO–OPO, 10/01/2026 – 10/29/2026: From $997
    01

    Th

    oct

  • SFO–OPO, 10/02/2026 – 10/23/2026: From $1,005
    02

    Fr

  • SFO–OPO, 10/03/2026 – 10/31/2026: From $1,062
    03

    Sa

  • SFO–OPO, 10/04/2026 – 11/01/2026: From $855
    04

    Su

  • SFO–OPO, 10/05/2026 – 11/02/2026: From $838
    05

    Mo

  • SFO–OPO, 10/06/2026 – 11/03/2026: From $788
    06

    Tu

    • Range$788-$1,375

    *Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.

    The best deals on flights from San Francisco to Porto for the upcoming months

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    The best deals on flights from San Francisco to Porto for the upcoming months
    From
    To
    Fare Type
    Dates
    Price
    San Francisco (SFO)Porto (OPO)Round-trip
    /
    Economy    		10/21/2026 - 11/11/2026

    From

    $738

    Seen: 9 hrs ago

    San Francisco (SFO)Porto (OPO)Round-trip
    /
    Economy    		10/27/2026 - 11/03/2026

    From

    $738

    Seen: 9 hrs ago

    San Francisco (SFO)Porto (OPO)Round-trip
    /
    Economy    		10/28/2026 - 11/04/2026

    From

    $738

    Seen: 9 hrs ago

    San Francisco (SFO)Porto (OPO)Round-trip
    /
    Economy    		10/28/2026 - 11/18/2026

    From

    $738

    Seen: 9 hrs ago

    San Francisco (SFO)Porto (OPO)Round-trip
    /
    Economy    		12/02/2026 - 12/09/2026

    From

    $738

    Seen: 13 hrs ago

    *Fares displayed have been collected within the last 48hrs and may no longer be available at time of booking. Additional fees and charges for optional products and services may apply.
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    Travel from San Francisco to Porto with Air France

    Whether you're looking for a last-minute San Francisco - Porto (Portugal) flight or planning a flight at a later date, take advantage of our lowest prices for your travel dates on this site. Take a look at the next 6 months and find the best price to fly whit Air France from San Francisco (SFO) to Porto (OPO) or directly pick your departure date if your trip to Porto (Portugal) is already scheduled.

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