Cheap flights from San Francisco to Porto from $313
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from San Francisco to Porto departing on 2/14. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Not ready to book? to track prices.TAP AIR PORTUGAL flights from San Francisco to Porto
Our best TAP AIR PORTUGAL deals on San Francisco to Porto flight tickets
Air Canada flights from San Francisco to Porto
Our best Air Canada deals on San Francisco to Porto flight tickets
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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
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sat 10/24
7:35 pm-7:30 am
1 stop28h 55m
Porto
Fri 11/6
7:00 am-4:05 pm
1 stop17h 05m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sat 10/24
7:35 pm-10:00 pm
1 stop19h 25m
Porto
Fri 11/6
11:00 am-2:45 pm
1 stop35h 45m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Mon 11/9
3:10 pm-10:00 pm
1 stop22h 50m
Porto
Mon 11/16
4:10 pm-11:45 am
1 stop27h 35m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Mon 11/9
7:00 am-10:30 am
2 stops19h 30m
Porto
Mon 11/16
4:10 pm-11:45 am
1 stop27h 35m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sun 1/10
7:25 pm-6:30 pm
1 stop15h 05m
Porto
Thu 1/14
12:05 pm-4:30 pm
1 stop36h 25m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sun 1/10
8:25 am-12:05 pm
2 stops19h 40m
Porto
Thu 1/14
12:05 pm-4:30 pm
1 stop36h 25m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sun 1/10
8:25 am-12:05 pm
2 stops19h 40m
Porto
Thu 1/14
6:00 am-8:07 pm
2 stops22h 07m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Tue 4/6
10:35 pm-9:45 am
2 stops27h 10m
Porto
Tue 4/13
6:00 am-7:55 pm
1 stop21h 55m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Tue 4/6
11:55 pm-9:45 am
1 stop25h 50m
Porto
Tue 4/13
6:00 am-3:25 pm
1 stop17h 25m
San FranciscoPorto
SFO San Francisco - OPO Porto
SFOOPO
San Francisco
Sun 2/7
7:25 pm-11:15 am
1 stop31h 50m
Porto
Sat 2/13
8:40 am-4:30 pm
1 stop15h 50m
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 $826 to $1,297.The lowest price recently found on this route was $569.
What is the cheapest month to fly to Porto?
The month of March is, on average, the cheapest month to fly to Porto from San Francisco, with most prices found around $612. If you aren’t able to travel during the month of March, then book flights to Porto from San Francisco during February instead. Flights to Porto in February, while not as cheap as those in March, still average around $675.
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 $938 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.
What is the cheapest airline that flies from San Francisco to Porto?
Delta, KLM, and United Airlines are the most popular carriers operating from San Francisco to Porto
What airlines fly to Porto?
TAP AIR PORTUGAL, United Airlines and Lufthansa are the top three most popular airlines that fly to Porto from San Francisco according to our data. TAP AIR PORTUGAL is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 10 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.
Which airport is the most popular layover for flights between San Francisco and Porto?
Lisbon (LIS) was the most common stop: 36% of momondo users choosing 1-stop flights on this route connected there.
Which layover airport offers the lowest fares from San Francisco to Porto?
Flights via Paris (CDG) offer the lowest average round-trip price of $913.
Which layover airport has the shortest travel time from San Francisco to Porto?
Flights connecting via Newark (EWR) have the shortest average one-way travel time: 14h 40m.
Which layover airport has the shortest connection time from San Francisco to Porto?
Zurich (ZRH) has the shortest average layover time for this route: 0h 58m.
When to book flights from San Francisco to Porto
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
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 13h 30m 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?
There are 10 operators available for flights from San Francisco Airport to Porto Airport as of October 2026.
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?
Based on momondo bookings for flights between San Francisco and Porto, the leading airline is TAP AIR PORTUGAL, making up 33% of the total bookings. Other popular airlines include United Airlines with 16%, Lufthansa with 14%, and Delta with 8%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $431 | Free Cancellation | Rating 7.2 2,385 reviews | |||
| PriceFrom $480 | Free Cancellation | Rating 7.4 2,010 reviews | |||
| PriceFrom $625 | Free Cancellation | Rating 6.8 8,271 reviews | |||
| PriceFrom $654 | Free Cancellation | Rating 7.4 4,455 reviews | |||
| PriceFrom $682 | Free Cancellation | Rating 7.5 2,094 reviews | |||
| PriceFrom $683 | Free Cancellation | Rating 7.8 1,580 reviews | |||
| PriceFrom $759 | Free Cancellation | Rating 7.4 10,319 reviews | |||
| PriceFrom $764 | Free Cancellation | Rating 7.8 8,645 reviews | |||
| PriceFrom $855 | Free Cancellation | Rating 7.5 1,650 reviews | |||
| PriceFrom $911 | Free Cancellation | Rating 7.1 11,745 reviews |
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsWhy 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.