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

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The best prices from San Francisco to Porto are usually found in October or April, booked 40 days in advance, depart on a Monday or Tuesday and return on a Thursday

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 2021: compare San Francisco to Porto flight prices with the expected peak season, weather and rainfall in Porto.
SFO - OPO
Price
$691 - $1,490
OPO
Temperature
48.2 - 68 °F
OPO
Precipitation
0.7 - 7.7 inches

Popular in

December

High demand for flights, 38% potential price rise

Cheapest in

October

Best time to find cheap flights, 25% potential price drop

Round-trip from

$691

From San Francisco to Porto

One-way from

$507

One-way flight from San Francisco to Porto

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest month to fly from San Francisco to Porto?

Due to multiple factors, expect to potentially pay more when booking in December. For low rates, October can be a great choice for travel to Porto. Flights to Porto from San Francisco in October are about $917 on average during October, but can be found for as low as $507.

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 41 days before your planned departure. Booking around this time can save you about 46% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $1,083 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $1,125.

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

Unlike in the morning, when flights are generally more expensive, you can save up to 32% on flights from San Francisco to Porto by exploring options for tickets in the evening.

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

Leaving on a Sunday 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 50% on the overall cost on flights from San Francisco to Porto.

Cheap flights from San Francisco to Porto in December, January 2022

The best prices found for SFO to OPO flights for December, January
17 Jan - 9 Feb
$566pp
SFO
San Francisco
Multiple Airlines
   
2 STOPS
OPO
Porto
OPO
Porto
Multiple Airlines
   
2 STOPS
SFO
San Francisco
25 Jan - 9 Feb
$567pp
SFO
San Francisco
Delta
   
2 STOPS
OPO
Porto
OPO
Porto
Delta
 
1 STOP
SFO
San Francisco
17 Jan - 9 Feb
$568pp
SFO
San Francisco
Multiple Airlines
   
2 STOPS
OPO
Porto
OPO
Porto
KLM
 
1 STOP
SFO
San Francisco

San Francisco to Porto 2022 flight deals

Cheap flights to Porto from San Francisco found for this year
24 Dec - 9 Jan
$973pp
SFO
San Francisco
Lufthansa
 
1 STOP
OPO
Porto
OPO
Porto
Lufthansa
 
1 STOP
SFO
San Francisco
21 Dec - 30 Dec
$1,012pp
SFO
San Francisco
Multiple Airlines
   
2 STOPS
OPO
Porto
OPO
Porto
Multiple Airlines
     
3 STOPS
SFO
San Francisco
21 Dec - 30 Dec
$1,037pp
SFO
San Francisco
Multiple Airlines
     
3 STOPS
OPO
Porto
OPO
Porto
Multiple Airlines
     
3 STOPS
SFO
San Francisco

Last minute flights from San Francisco to Porto

Late deals on round-trip flights to Porto from San Francisco, departing today and this week
18 Dec - 30 Dec
$1,952pp
SFO
San Francisco
United Airlines
   
2 STOPS
OPO
Porto
OPO
Porto
United Airlines
 
1 STOP
SFO
San Francisco
16 Dec - 3 Jan
$1,972pp
SFO
San Francisco
Turkish Airlines
 
1 STOP
OPO
Porto
OPO
Porto
Turkish Airlines
 
1 STOP
SFO
San Francisco
16 Dec - 3 Jan
$2,070pp
SFO
San Francisco
Multiple Airlines
 
1 STOP
OPO
Porto
OPO
Porto
Multiple Airlines
     
3 STOPS
SFO
San Francisco

One-way flights to Porto from San Francisco

The cheapest one-way flights from San Francisco to Porto
1:15 pm - 4:45 am
Turkish Airlines
1 Stop
31h 30m
SFO - OPO
Turkish Airlines
11:40 am - 2:00 pm
TAP AIR PORTUGAL
1 Stop
18h 20m
SFO - OPO
TAP AIR PORTUGAL
2:30 am - 4:20 am
Multiple Airlines
2 Stops
17h 50m
SFO - OPO
Multiple Airlines
$582
FlightHub

Related info for your journey

Useful info, stats and facts about <span class="emphasized">San Francisco</span> to <span class="emphasized">Porto</span> flights.

Flight FAQs

From San Francisco to Porto

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, United Airlines, and Lufthansa. 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 Vueling for just $492, but on average you can expect to pay $595.

Are there last-minute flights available from San Francisco to Porto for under $2,000?

There are currently 7+ open flights from San Francisco to Porto within the next 7 days for less than $2,000.

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

Vueling, at $492, was found to be the cheapest airline from San Francisco to Porto.Alternate airlines to your destination round-trip include KLM and Delta. Users have found that Vueling is 46% cheaper than the other options available to this destination.

What are the cheapest flights from San Francisco to Porto?

While on average a flight from San Francisco to Porto is generally $1,065, our data shows the cheapest flight currently is $204. When looking at the most popular route, (San Francisco - Porto), you can expect to pay $492 for that flight.

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 Air Canada, Air France or British Airways as they are the most popular for this route.

COVID Restrictions

View COVID Travel Restrictions for Porto, Portugal

Do I need a COVID test to fly to Porto from San Francisco?

Information is based on travel restrictions from San Francisco to Porto

Most visitors from San Francisco need to provide a negative COVID-19 test result and/or quarantine to enter Porto.

COVID-19 testing requirements
Visitors from San Francisco must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 for RT-PCR (NAAT) and 24 Antigen (quick-test) hours before departing to Porto.

Quarantine requirements
Visitors from San Francisco are not required to quarantine after entering Porto.

Documents
Health declaration for Madeira - Travelers must complete and submit it 12-48 hours before departure. This will generate a QR code which must be presented upon arrival.


Do I need a test to fly back to San Francisco from Porto?

Returning to San Francisco from Porto

COVID-19 testing requirements
Visitors from Porto must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 24 hours before departing to San Francisco.

Quarantine requirements
Visitors from Porto are not required to quarantine after entering San Francisco.

Hide COVID Travel Restrictions for Porto, Portugal

Alternative routes for San Francisco to Porto

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

Destination information for Porto

Things to know before you go - useful duration and weather info for your trip from San Francisco to Porto.
Today's exchange rate
$1 = €0.89
Average temperature for December in Porto
59.0 °F
Avg rainfall for December in Porto
6.1 ″

Airports servicing San Francisco

Airports servicing Porto

Top 6 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.
Airline Cheapest Average Flexibility On-time COVID-19 safety
TAP AIR PORTUGAL
$432 $995 No cancel fee N/A
Lufthansa
$532 $1,509 No cancel fee 76%
Iberia
$555 $1,031 No cancel fee 77%
SWISS
$774 $1,557 No cancel fee 79%
Air Canada
$775 $1,187 No cancel fee 67%
United Airlines
$947 $2,005 No cancel fee 69%
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