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

SFO — OPO
Sep 27 — Oct 41

The best prices from San Francisco to Porto are usually found in January or October, booked 19 days in advance, depart on a Sunday or Saturday and return on a Tuesday

How to find the cheapest flight from San Francisco (SFO) to Porto (OPO)

All the information you need to plan the best SFO to OPO flight in 2022: compare San Francisco to Porto flight prices with the expected peak season, weather and rainfall in Porto.

SFO - OPO

Price

$597 - $1,389

OPO

Temperature

48.2 - 68 °F

OPO

Rainfall

0.7 - 7.7 inches

Popular inAugustHigh demand for flights, 35% potential price rise
Cheapest inJanuaryBest time to find cheap flights, 34% potential price drop
Round-trip from$597From San Francisco to Porto
One-way from$459One-way flight from San Francisco to Porto

What is the cheapest day to fly round-trip from San Francisco to Porto?

Leaving on a Saturday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 35% on the overall cost on flights from San Francisco to Porto.

How far in advance should I book a flight from San Francisco to Porto?

To save on the cost of your flight from San Francisco to Porto, book at least 20 days before your planned departure. Booking around this time can save you about 17% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,001 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,197.

What is the cheapest month to fly from San Francisco to Porto?

Due to multiple factors, expect to potentially pay more when booking in August. For low rates, January can be a great choice for travel to Porto. Flights to Porto from San Francisco in January are about $899 on average during January, but can be found for as low as $535.

When is the cheapest time to fly from San Francisco to Porto (SFO - OPO)?

Unlike at noon, when flights are generally more expensive, you can save up to 15% on flights from San Francisco to Porto by exploring options for tickets in the afternoon.

Cheap flights from San Francisco to Porto in September, October 2022

The best prices found for SFO to OPO flights for September, October
Oct 18 - Nov 22
SFO

San Francisco

OPO

Porto

1 stop

17h 00m
OPO

Porto

SFO

San Francisco

2 stops

30h 25m
$671

Multiple Airlines

Pick Dates

Deal found 9/21/22

Oct 17 - Oct 26
SFO

San Francisco

OPO

Porto

1 stop

14h 35m
OPO

Porto

SFO

San Francisco

1 stop

20h 30m
$687

Multiple Airlines

Pick Dates

Deal found 9/20/22

Oct 31 - Nov 10
SFO

San Francisco

OPO

Porto

1 stop

14h 20m
OPO

Porto

SFO

San Francisco

1 stop

15h 55m
$694

TAP AIR PORTUGAL

Pick Dates

Deal found 9/20/22

San Francisco to Porto 2022 flight deals

Cheap flights to Porto from San Francisco found for this year
Dec 3 - Dec 10
SFO

San Francisco

OPO

Porto

1 stop

14h 20m
OPO

Porto

SFO

San Francisco

1 stop

17h 50m
$492

TAP AIR PORTUGAL

Pick Dates

Deal found 9/21/22

Dec 3 - Dec 12
SFO

San Francisco

OPO

Porto

1 stop

14h 20m
OPO

Porto

SFO

San Francisco

1 stop

17h 55m
$493

TAP AIR PORTUGAL

Pick Dates

Deal found 9/21/22

Dec 2 - Dec 11
SFO

San Francisco

OPO

Porto

3 stops

27h 00m
OPO

Porto

SFO

San Francisco

2 stops

32h 45m
$497

Multiple Airlines

Pick Dates

Deal found 9/20/22

Cheap TAP AIR PORTUGAL flights from San Francisco to Porto

Dec 3 - Dec 10
SFO

San Francisco

OPO

Porto

1 stop

14h 20m
OPO

Porto

SFO

San Francisco

1 stop

17h 50m
$492

TAP AIR PORTUGAL

Pick Dates

Deal found 9/21/22

Dec 3 - Dec 12
SFO

San Francisco

OPO

Porto

1 stop

14h 20m
OPO

Porto

SFO

San Francisco

1 stop

17h 55m
$493

TAP AIR PORTUGAL

Pick Dates

Deal found 9/21/22

Dec 5 - Dec 12
SFO

San Francisco

OPO

Porto

1 stop

14h 20m
OPO

Porto

SFO

San Francisco

1 stop

17h 55m
$501

TAP AIR PORTUGAL

Pick Dates

Deal found 9/21/22

Cheap Vueling flights from San Francisco to Porto

Oct 18 - Oct 27
SFO

San Francisco

OPO

Porto

1 stop

17h 00m
OPO

Porto

SFO

San Francisco

1 stop

17h 30m
$727

Vueling

Pick Dates

Deal found 9/20/22

Oct 16 - Oct 26
SFO

San Francisco

OPO

Porto

1 stop

27h 50m
OPO

Porto

SFO

San Francisco

1 stop

28h 20m
$749

Vueling

Pick Dates

Deal found 9/21/22

Oct 18 - Oct 25
SFO

San Francisco

OPO

Porto

1 stop

17h 00m
OPO

Porto

SFO

San Francisco

1 stop

17h 30m
$767

Vueling

Pick Dates

Deal found 9/21/22

Last minute flights from San Francisco to Porto

Late deals on return flights to Porto from San Francisco, departing today and this week
Sep 28 - Oct 21
SFO

San Francisco

OPO

Porto

1 stop

14h 05m
OPO

Porto

SFO

San Francisco

2 stops

21h 55m
$792

Iberia

Pick Dates

Deal found 9/21/22

Oct 2 - Oct 14
SFO

San Francisco

OPO

Porto

1 stop

16h 05m
OPO

Porto

SFO

San Francisco

1 stop

17h 05m
$814

Air France

Pick Dates

Deal found 9/22/22

Sep 30 - Oct 7
SFO

San Francisco

OPO

Porto

1 stop

34h 00m
OPO

Porto

SFO

San Francisco

2 stops

19h 39m
$816

American Airlines

Pick Dates

Deal found 9/20/22

One-way flights to Porto from San Francisco

The cheapest one-way flights from San Francisco to Porto
Oct 23
SFO

San Francisco

OPO

Porto

1 stop

27h 50m
$302

Vueling

Pick Dates

Deal found 9/21/22

Oct 18
SFO

San Francisco

OPO

Porto

1 stop

17h 00m
$304

Vueling

Pick Dates

Deal found 9/21/22

Oct 11
SFO

San Francisco

OPO

Porto

3 stops

26h 30m
$314

Multiple Airlines

Pick Dates

Deal found 9/19/22

Related info for your journey

Useful info, stats and facts about San Francisco to Porto flights.

Which airlines flying from San Francisco to Porto have flexible cancellations due to COVID-19?

Some of the carriers operating flights from San Francisco to Porto that may be offering flexible cancellation policies are TAP AIR PORTUGAL, Lufthansa, and United Airlines. Our site will let you filter for all airlines offering greater flexibility due to COVID-19.

Can I find flights from San Francisco to Porto for under $500 on Cheapflights?

Yes, there are multiple flights from San Francisco to Porto for under $500. The cheapest flight booked recently is on TAP AIR PORTUGAL for just $492, but on average you can expect to pay $590.

Are there last-minute flights available from San Francisco to Porto for under $800?

There are currently 20+ open flights from San Francisco to Porto within the next 7 days for less than $800.

What are the cheapest airlines flying from San Francisco to Porto round-trip?

TAP AIR PORTUGAL, at $492, was found to be the cheapest airline from San Francisco to Porto. An alternate airline flying to your destination would be Vueling. Users have found that TAP AIR PORTUGAL is 45% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from San Francisco to Porto one-way?

The cheapest airlines for a one-way flight from San Francisco to Porto are Vueling ($302), TAP AIR PORTUGAL ($372), and SWISS ($488).

What are the most popular airlines that fly from San Francisco to Porto?

When booking a flight from San Francisco to Porto, you may want to consider flying on American Airlines, Air Canada or Air France as they are the most popular for this route.

What are the cheapest flights from San Francisco to Porto?

While on average a flight from San Francisco to Porto is generally $2,719, our data shows the cheapest flight currently is $431. When looking at the most popular route, (San Francisco - Porto), you can expect to pay $497 for that flight.

Alternative routes for San Francisco to Porto

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from San Francisco to Porto

The chart below displays the airlines Cheapflights users traveling from San Francisco to Porto choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
AirlineCheapestAverageFlexibilityOn-timeCOVID-19 safety
Juneyao AirlinesCheapest$12Average$16FlexibilityNo cancel feeOn-time66%COVID-19 safety
Search Juneyao Airlines flights
British AirwaysCheapest$513Average$897FlexibilityNo cancel feeOn-time70%COVID-19 safety
Search British Airways flights
TAP AIR PORTUGALCheapest$536Average$1,078FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search TAP AIR PORTUGAL flights
VuelingCheapest$548Average$886FlexibilityNo cancel feeOn-time88%COVID-19 safety
Search Vueling flights
SWISSCheapest$556Average$1,096FlexibilityNo cancel feeOn-time79%COVID-19 safety
Search SWISS flights
DeltaCheapest$564Average$1,168FlexibilityNo cancel feeOn-timeN/ACOVID-19 safety
Search Delta flights
KLMCheapest$569Average$1,023FlexibilityNo cancel feeOn-time75%COVID-19 safety
Search KLM flights
LufthansaCheapest$589Average$1,270FlexibilityNo cancel feeOn-time76%COVID-19 safety
Search Lufthansa flights
United AirlinesCheapest$671Average$1,430FlexibilityNo cancel feeOn-time69%COVID-19 safety
Search United Airlines flights
IberiaCheapest$695Average$1,165FlexibilityNo cancel feeOn-time77%COVID-19 safety
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