Cheap flights from Barcelona to San Francisco from $363

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 $584.

The cheapest day to depart from Barcelona to San Francisco is on a Thursday when prices can be found for as low as $690. The most expensive day to fly to San Francisco is Sunday, with ticket prices averaging around $798.

Our data shows that the cheapest Barcelona to San Francisco flights are usually those with departure times at noon. Our users have found flights to San Francisco at noon for as low as $688. Flights in the afternoon are often more expensive with an average ticket price of $795.

Fly from Barcelona-El Prat to San Francisco for the best Barcelona - San Francisco flight prices

You are more likely to see cheaper flights to San Francisco from Barcelona when booking weeks ahead of your departure date. In general, you can expect to find flights to San Francisco for around $672 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Francisco from Barcelona for as low as $592 on momondo.

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

TAP AIR PORTUGAL and Iberia are the most popular carriers operating from Barcelona to San Francisco

United Airlines, Lufthansa and Iberia are the top three most popular airlines that fly to San Francisco from Barcelona according to our data. United Airlines is the first choice among our users, with 36% of people opting to fly with this airline when traveling to San Francisco. Keep in mind that there are 10 different airlines that fly to San Francisco on a routine basis, so you have a few additional options to choose from.

Historically, on average around 17% of flights between Barcelona and San Francisco have experienced a delay on any given week. The average delay length over the past 12 months has been 169 minutes.

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

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

According to our data, LEVEL have had the least number of delays on this route over the last 12 months; with about 14% of their flights experiencing any sort of delay.

As of April 2026, 8 flights take off from Barcelona and land in San Francisco each week. The most common flight departure day for this route is Thu, with 50% of weekly flights taking off on this day.

Flight times from Barcelona to San Francisco vary, but if you’re flying out of Barcelona and flying into San Francisco (one of the most popular routes), then the duration is 12h 10m on average. Another popular route from Barcelona to San Francisco is flying from Girona to San Francisco, which will take roughly 18h 35m. Keep in mind that layovers or delays could extend your travel time.