Cheap flights from Barcelona to San Francisco from £344

The month of March is, on average, the cheapest month to fly to San Francisco from Barcelona, with most prices found around £194. If you are unable to visit San Francisco during the month of March, then departing from Barcelona during the month October is also very affordable. Most momondo users find prices during this month for around £276.

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 £524 when searching weeks before you fly. 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 £391 on momondo.

There is only 1 cabin class 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.

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 149 minutes.

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

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

According to our data, LEVEL have had the fewest delays on this route over the last 12 months, with about 15% of their flights experiencing any sort of delay.

As of June 2026, there are 3 flights per day flying from Barcelona to San Francisco. The most common time of day flights depart is 16:00, with 100% of flights taking off in the afternoon.

The number of flights available between Barcelona and San Francisco is 21 per week as of June 2026. The most frequent departure day is Mon, with 14% of weekly flights leaving on this day.