Cheap flights from San Francisco to Serra da Estrela

View AU$510 flight on Mon, 8 Sep. 2025Opens in a new window

Popular airlines from San Francisco to Serra da Estrela

  • KLM

    KLM

  • Lufthansa

    Lufthansa

  • Swiss International Air Lines

    Swiss International Air Lines

  • SAS

    SAS

  • Brussels Airlines

    Brussels Airlines

  • Turkish Airlines

    Turkish Airlines

  • TAP Portugal

    TAP Portugal

  • 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 Serra da Estrela (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
British Airways
Mon, 8 Sep. - Wed, 24 Sep.
SFO
San Francisco
LIS
Lisbon
AU$1,126 Return, found 4 days ago
AU$1,126
Return
found 4 days ago
Select British Airways flight, departing Mon, 8 Sep. from San Francisco to Lisbon, returning Wed, 24 Sep., priced at AU$1,126 found 4 days ago
United
Wed, 3 Sep. - Wed, 10 Sep.
SFO
San Francisco
LIS
Lisbon
AU$1,174 Return, found 4 days ago
AU$1,174
Return
found 4 days ago
Select United flight, departing Wed, 3 Sep. from San Francisco to Lisbon, returning Wed, 10 Sep., priced at AU$1,174 found 4 days 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
Delta
Fri, 5 Sep. - Fri, 12 Sep.
OAK
Oakland
LIS
Lisbon
AU$1,297 Return, found 2 days ago
AU$1,297
Return
found 2 days ago
Select Delta flight, departing Fri, 5 Sep. from Oakland to Lisbon, returning Fri, 12 Sep., priced at AU$1,297 found 2 days ago
American Airlines
Mon, 8 Sep. - Wed, 24 Sep.
SFO
San Francisco
LIS
Lisbon
AU$1,353 Return, found 4 days ago
AU$1,353
Return
found 4 days ago
Select American Airlines flight, departing Mon, 8 Sep. from San Francisco to Lisbon, returning Wed, 24 Sep., priced at AU$1,353 found 4 days ago

Find the cheapest month to fly from San Francisco (SFO) to Lisbon (LIS)

February is typically the cheapest month to fly

From AU$755 - AU$1,545 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.