Cheap flights from San Francisco to Tras-os-Montes

View AU$607 flight on Tue, 16 Sep. 2025Opens in a new window

Popular airlines from San Francisco to Tras-os-Montes

  • Jetstar

    Jetstar

  • Qantas Airways

    Qantas Airways

  • Virgin Australia

    Virgin Australia

  • Scoot

    Scoot

  • American Airlines

    American Airlines

  • Emirates

    Emirates

  • United

    United

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Cheap Flights from San Francisco (SJC) to Tras-os-Montes (OPO)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Thu, 18 Sep. - Tue, 30 Sep.
SFO
San Francisco
OPO
Porto
AU$999 Return, found 1 day ago
AU$999
Return
found 1 day ago
Select TAP Portugal flight, departing Thu, 18 Sep. from San Francisco to Porto, returning Tue, 30 Sep., priced at AU$999 found 1 day ago
Swiss International Air Lines
Thu, 18 Sep. - Tue, 30 Sep.
SFO
San Francisco
OPO
Porto
AU$1,291 Return, found 1 day ago
AU$1,291
Return
found 1 day ago
Select Swiss International Air Lines flight, departing Thu, 18 Sep. from San Francisco to Porto, returning Tue, 30 Sep., priced at AU$1,291 found 1 day ago
British Airways
Thu, 18 Sep. - Tue, 30 Sep.
SFO
San Francisco
OPO
Porto
AU$1,371 Return, found 1 day ago
AU$1,371
Return
found 1 day ago
Select British Airways flight, departing Thu, 18 Sep. from San Francisco to Porto, returning Tue, 30 Sep., priced at AU$1,371 found 1 day ago
KLM
Thu, 18 Sep. - Tue, 30 Sep.
SFO
San Francisco
OPO
Porto
AU$1,480 Return, found 1 day ago
AU$1,480
Return
found 1 day ago
Select KLM flight, departing Thu, 18 Sep. from San Francisco to Porto, returning Tue, 30 Sep., priced at AU$1,480 found 1 day ago
Turkish Airlines
Thu, 18 Sep. - Tue, 30 Sep.
SFO
San Francisco
OPO
Porto
AU$1,547 Return, found 1 day ago
AU$1,547
Return
found 1 day ago
Select Turkish Airlines flight, departing Thu, 18 Sep. from San Francisco to Porto, returning Tue, 30 Sep., priced at AU$1,547 found 1 day ago
Lufthansa
Thu, 18 Sep. - Tue, 30 Sep.
SFO
San Francisco
OPO
Porto
AU$1,691 Return, found 1 day ago
AU$1,691
Return
found 1 day ago
Select Lufthansa flight, departing Thu, 18 Sep. from San Francisco to Porto, returning Tue, 30 Sep., priced at AU$1,691 found 1 day ago
*Available to Expedia members.