Cheap flights from San Francisco to Portugal from $393

The cheapest month to fly to Portugal from San Francisco is in August. Flight prices, which tend to average around $324, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Portugal from San Francisco during January instead. Flights to Portugal in January, while not as cheap as those in August, still average around $348.

According to our data, Tuesday is the cheapest day to fly to Portugal from San Francisco. The lowest ticket price found for a Tuesday departure recently was $635. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. The most expensive day to fly to Portugal is Friday, with ticket prices averaging around $784.

Our most recent data shows that the best time of day to fly to Portugal is in the afternoon. Flights from San Francisco to Portugal during this time can be as low as $690. In the evening is when there is more demand to fly to Portugal, so prices are often more expensive at around $798 per ticket.

Fly from San Francisco to Lisbon Humberto Delgado for the best San Francisco - Portugal flight prices

You are more likely to see cheaper flights to Portugal from San Francisco when booking weeks ahead of your departure date. In general, you can expect to find flights to Portugal for around $819 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portugal from San Francisco for as low as $762 on momondo.

There are 3 cabin classes available to choose from on San Francisco to Portugal flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Iberia, British Airways, and United Airlines are the most popular carriers operating from San Francisco to Portugal

TAP AIR PORTUGAL, United Airlines and Air Canada are the top three most popular airlines that fly to Portugal from San Francisco according to our data. TAP AIR PORTUGAL is the first choice among our users, with 57% of people opting to fly with this airline when traveling to Portugal. Keep in mind that there are 15 different airlines that fly to Portugal on a routine basis, so you have a few additional options to choose from.

Historically, on average around 19% of flights between San Francisco and Portugal have experienced a delay on any given week. The average delay length over the past 12 months has been 115 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights in the evening have, in the past, seen delays more frequently in comparison.

Wednesday is statistically the day of the week which experiences the fewest number of delays on this flight route. Tuesday has historically seen more delays on average compared to the rest of the week.

According to our data, TAP AIR PORTUGAL have had the least number of delays on this route over the last 12 months; with about 19% of their flights experiencing any sort of delay.