Cheap flights from Porto to San Francisco from $349
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Porto to San Francisco departing on 6/11. 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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How to get the cheapest flight ticket from Porto to San Francisco
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 cheapest month to fly to San Francisco?
If you aren’t able to travel to San Francisco during the month of February, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $683.
What is the cheapest day to depart on your flight to San Francisco?
The cheapest day to depart from Porto to San Francisco is on a Wednesday when prices can be found for as low as $668. The most expensive day to fly to San Francisco is Saturday, with ticket prices averaging around $941.
What is the cheapest time of day to depart on your flight to San Francisco?
Our data shows that the cheapest Porto to San Francisco flights are usually those with departure times in the morning. Our users have found flights to San Francisco in the morning for as low as $818. Flights in the morning are often more expensive with an average ticket price of $818.
How far in advance should I book a flight to San Francisco?
You are more likely to see cheaper flights to San Francisco from Porto when booking 22 weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $877 when searching 22 weeks out.However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Porto for as low as $664 on momondo.
When to book flights from Porto to San Francisco
Cheap Porto to San Francisco (OPO to SFO) flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from Porto to San Francisco
How far is Porto to San Francisco by plane?
There are 5565.0 mi between Porto and San Francisco. Typically, this will take 15h 30m by plane in normal conditions.
When did momondo last update prices for flights from Porto Airport to San Francisco Airport?
Prices for flights from Porto Airport to San Francisco Airport refresh daily.
How many operators does momondo search for flights from Porto Airport to San Francisco Airport?
The number of operators available for flights from Porto Airport to San Francisco Airport is 1 as of April 2025.
How old do you have to be to fly from Porto Airport to San Francisco 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 Porto Airport to San Francisco Airport.
What documentation or ID do you need to fly to San Francisco Airport?
The necessary travel and health documents for your San Francisco 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 Porto to San Francisco?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Porto to San Francisco is Lufthansa (100% of total bookings).
Best airlines flying from Porto to San Francisco
Compare and see reviews for airlines that fly from Porto to San Francisco with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $665 | Free Cancellation | Rating 6.7 7,011 reviews |
Traveling to a place near San Francisco?
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Why should I use momondo to find a flight deal from Porto to San Francisco?
It is quick and easy to find Porto to San Francisco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Francisco that suits you.
Can I find flights from Porto to San Francisco with flexible booking policies on momondo?
Yes. All flights to San Francisco from Porto on momondo can be compared and filtered by various policies on offer, including flexible booking.
How can momondo help me find flights from Porto to San Francisco?
Once all potential Porto to San Francisco 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 Porto to San Francisco right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Porto to San Francisco flights. All you need is a valid email address and we will do the rest; it is that quick and easy.