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Cheap flights from San Francisco to Porto from $217

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Francisco to Porto

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:15 pm - 5:00 pmSFO  San Francisco-OPO Porto
13h 45m1 stop Lisbon Humberto Delgado
Multiple Airlines Logo
11:40 am - 2:45 pmOPO  Porto-SFO San Francisco
35h 05m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$654Multiple Airlines
Fri, Nov 27 - Fri, Dec 4
Scandinavian Airlines Logo
4:45 pm - 8:40 amSFO  San Francisco-OPO Porto
31h 55m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
11:50 am - 2:40 pmOPO  Porto-SFO San Francisco
34h 50m1 stop Kastrup Copenhagen
$681Scandinavian Airlines
Thu, Apr 8 - Thu, Apr 15
Multiple Airlines Logo
4:35 pm - 3:00 pmSFO  San Francisco-OPO Porto
14h 25m1 stop Lisbon Humberto Delgado
Multiple Airlines Logo
4:10 pm - 2:45 pmOPO  Porto-SFO San Francisco
30h 35m2 stops Barcelona-El Prat Lisbon Humberto Delgado
$687Multiple Airlines
Mon, Nov 30 - Tue, Dec 15
Delta Logo
6:05 pm - 10:00 pmSFO  San Francisco-OPO Porto
19h 55m1 stop Paris Charles de Gaulle
Delta Logo
11:15 am - 11:45 amOPO  Porto-SFO San Francisco
32h 30m1 stop Amsterdam Schiphol
$722Delta
Wed, Feb 10 - Wed, Feb 24
Delta Logo
3:10 pm - 10:00 pmSFO  San Francisco-OPO Porto
22h 50m1 stop Paris Charles de Gaulle
Delta Logo
11:15 am - 11:45 amOPO  Porto-SFO San Francisco
32h 30m1 stop Amsterdam Schiphol
$722Delta
Wed, Feb 10 - Tue, Feb 23
SWISS Logo
7:25 pm - 11:15 amSFO  San Francisco-OPO Porto
31h 50m1 stop Zurich
SWISS Logo
12:05 pm - 4:30 pmOPO  Porto-SFO San Francisco
36h 25m1 stop Zurich
$722SWISS
Tue, Feb 9 - Thu, Feb 25
KLM Logo
3:10 pm - 10:00 pmSFO  San Francisco-OPO Porto
22h 50m1 stop Paris Charles de Gaulle
KLM Logo
5:00 am - 11:45 amOPO  Porto-SFO San Francisco
14h 45m1 stop Amsterdam Schiphol
$723KLM
Tue, Feb 9 - Fri, Feb 26
KLM Logo
9:00 am - 10:30 amSFO  San Francisco-OPO Porto
17h 30m2 stops New York John F Kennedy Intl Amsterdam Schiphol
KLM Logo
5:00 am - 4:02 pmOPO  Porto-SFO San Francisco
19h 02m2 stops Amsterdam Schiphol Seattle/Tacoma Intl
$732KLM
Wed, Feb 10 - Thu, Feb 25
SWISS Logo
7:25 pm - 11:15 amSFO  San Francisco-OPO Porto
31h 50m1 stop Zurich
SWISS Logo
12:05 pm - 4:30 pmOPO  Porto-SFO San Francisco
36h 25m1 stop Zurich
$739SWISS
Mon, Nov 30 - Tue, Dec 15
Scandinavian Airlines Logo
4:45 pm - 10:40 amSFO  San Francisco-OPO Porto
33h 55m1 stop Kastrup Copenhagen
Scandinavian Airlines Logo
5:45 pm - 2:50 pmOPO  Porto-SFO San Francisco
29h 05m1 stop Kastrup Copenhagen
$740Scandinavian Airlines
Mon, Jan 4 - Fri, Jan 22

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TAP AIR PORTUGAL flights from San Francisco to Porto

Our best TAP AIR PORTUGAL deals on San Francisco to Porto flight tickets
TAP AIR PORTUGAL
Nov 27
SFO7:15 pmSan Francisco
18h 45m
1 stop
OPO10:00 pmPorto
Dec 4
OPO8:00 pmPorto
26h 45m
1 stop
SFO2:45 pmSan Francisco
$770
TAP AIR PORTUGAL
Nov 9
SFO4:35 pmSan Francisco
18h 25m
1 stop
OPO7:00 pmPorto
Nov 17
OPO6:00 pmPorto
28h 45m
1 stop
SFO2:45 pmSan Francisco
$773
TAP AIR PORTUGAL
Nov 9
SFO4:35 pmSan Francisco
14h 25m
1 stop
OPO3:00 pmPorto
Nov 20
OPO8:30 amPorto
15h 35m
1 stop
SFO4:05 pmSan Francisco
$817

Scandinavian Airlines flights from San Francisco to Porto

Our best Scandinavian Airlines deals on San Francisco to Porto flight tickets
Scandinavian Airlines
Apr 8
SFO4:45 pmSan Francisco
31h 55m
1 stop
OPO8:40 amPorto
Apr 15
OPO11:50 amPorto
34h 50m
1 stop
SFO2:40 pmSan Francisco
$681
Scandinavian Airlines
Jan 4
SFO4:45 pmSan Francisco
33h 55m
1 stop
OPO10:40 amPorto
Jan 22
OPO5:45 pmPorto
29h 05m
1 stop
SFO2:50 pmSan Francisco
$740

momondo Fare Finder

 
Use the filters below to find and compare flights from San Francisco to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Fri 11/27

7:15 pm-5:00 pm

1 stop13h 45m

Porto

Fri 12/4

11:40 am-2:45 pm

2 stops35h 05m

$654

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Thu 4/8

4:45 pm-8:40 am

1 stop31h 55m

Porto

Thu 4/15

11:50 am-2:40 pm

1 stop34h 50m

$681

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/30

4:35 pm-3:00 pm

1 stop14h 25m

Porto

Tue 12/15

4:10 pm-2:45 pm

2 stops30h 35m

$687

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 2/10

6:05 pm-10:00 pm

1 stop19h 55m

Porto

Wed 2/24

11:15 am-11:45 am

1 stop32h 30m

$722

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 2/10

3:10 pm-10:00 pm

1 stop22h 50m

Porto

Tue 2/23

11:15 am-11:45 am

1 stop32h 30m

$722

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 2/9

7:25 pm-11:15 am

1 stop31h 50m

Porto

Thu 2/25

12:05 pm-4:30 pm

1 stop36h 25m

$722

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Tue 2/9

3:10 pm-10:00 pm

1 stop22h 50m

Porto

Fri 2/26

5:00 am-11:45 am

1 stop14h 45m

$723
Quickest round-trip

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Wed 2/10

9:00 am-10:30 am

2 stops17h 30m

Porto

Thu 2/25

5:00 am-4:02 pm

2 stops19h 02m

$732

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 11/30

7:25 pm-11:15 am

1 stop31h 50m

Porto

Tue 12/15

12:05 pm-4:30 pm

1 stop36h 25m

$739

San FranciscoPorto

SFO San Francisco - OPO Porto

SFOOPO

San Francisco

Mon 1/4

4:45 pm-10:40 am

1 stop33h 55m

Porto

Fri 1/22

5:45 pm-2:50 pm

1 stop29h 05m

$740

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

See travel insights to Porto from

How to get the cheapest flight ticket from San Francisco to Porto

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between San Francisco and Porto?

Prices are currently low for flights on this route.

Typical prices usually range from $819 to $1,163.
The lowest price recently found on this route was $654.

What is the cheapest month to fly to Porto?

The month of February is, on average, the cheapest month to fly to Porto from San Francisco, with most prices found around $675. If you aren’t able to travel during the month of February, then book flights to Porto from San Francisco during April instead. Flights to Porto in April, while not as cheap as those in February, still average around $683.

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

You are more likely to see cheaper flights to Porto from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $949 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from San Francisco for as low as $716 on momondo.

How have San Francisco to Porto flight prices changed over time?

As of November 2026, prices for San Francisco to Porto flights are approximately 24% more expensive when compared to flights at the same time last year.

When to book flights from San Francisco to Porto

Are you open to changing your travel dates? Check out the ideal times to fly from San Francisco to Porto according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap San Francisco to Porto (SFO to OPO) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Francisco to Porto

Best Price Found

$217

Fastest flight time

16h 25m

Direct flights

None
The best one-way flight to Porto from San Francisco in the past 72 hours is $217. The best round-trip flight deal from San Francisco to Porto found on momondo in the last 72 hours is $654.
The fastest flight from San Francisco to Porto takes 16h 25m
There are no direct flights from San Francisco to Porto. There are no popular flight routes from San Francisco to Porto.
Search flight deals

Frequently asked questions about flying from San Francisco to Porto

  • How far is San Francisco to Porto by plane?

    Porto is 5565.0 mi away from San Francisco. Typically, this will take 16h 25m by plane in normal conditions.

  • When did momondo last update prices for flights from San Francisco Airport to Porto Airport?

    Prices for flights from San Francisco Airport to Porto Airport were last updated today.

  • How many operators does momondo search for flights from San Francisco Airport to Porto Airport?

  • How old do you have to be to fly from San Francisco Airport to Porto Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from San Francisco Airport to Porto Airport.

  • What documentation or ID do you need to fly to Porto Airport?

    The necessary travel and health documents for your Porto Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from San Francisco to Porto?

Best airlines flying from San Francisco to Porto

Compare and see reviews for airlines that fly from San Francisco to Porto with momondo
Airline
Rating
Free Cancellation
Price
TAP AIR PORTUGALPriceFrom $431Free CancellationRating
7.2
2,394 reviews
Search TAP AIR PORTUGAL flights
Scandinavian AirlinesPriceFrom $460Free CancellationRating
7.4
2,029 reviews
Search Scandinavian Airlines flights
LufthansaPriceFrom $625Free CancellationRating
6.8
8,299 reviews
Search Lufthansa flights
Turkish AirlinesPriceFrom $654Free CancellationRating
7.4
4,466 reviews
Search Turkish Airlines flights
SWISSPriceFrom $682Free CancellationRating
7.5
2,107 reviews
Search SWISS flights
KLMPriceFrom $683Free CancellationRating
7.8
1,595 reviews
Search KLM flights
United AirlinesPriceFrom $759Free CancellationRating
7.3
10,461 reviews
Search United Airlines flights
DeltaPriceFrom $764Free CancellationRating
7.8
8,698 reviews
Search Delta flights
Air FrancePriceFrom $855Free CancellationRating
7.5
1,651 reviews
Search Air France flights
Air CanadaPriceFrom $911Free CancellationRating
7.1
11,853 reviews
Search Air Canada flights

Traveling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Braga
Coimbra
Vila Nova de Gaia
Aveiro
Pinhao
Esposende
Matosinhos
Chaves
Viseu
Espinho
Arcos de Valdevez
Lamego
Guimarães
Caminha
Penafiel
Ponte de Lima
Mira

Why use momondo?

Why should I use momondo to find a flight deal from San Francisco to Porto?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Porto from San Francisco.

Can I find flights from San Francisco to Porto with flexible booking policies on momondo?

Flights from San Francisco to Porto with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Francisco to Porto?

Once all potential San Francisco to Porto flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from San Francisco to Porto right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Porto, momondo offers a useful price alert feature which will track prices for flights to Porto from San Francisco and alert you when they change.

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