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Cheap flights from Barcelona-El Prat Airport to San Francisco from £324

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/3. Fares are subject to change and may not be available on all flights or dates of travel.
BCN — SFO
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Barcelona-El Prat to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Barcelona-El Prat (BCN) to San Francisco (SFO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 7 November 2025.

Round-trip from

£422

One-way from

£324

Popular in

July

Cheapest in

February

Average price

£428
United Airlines
  • United Airlines
  • 5/2-19/2
  • 3 total stops
  • 33h 10m total
  • Barcelona to San Francisco
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British Airways
  • British Airways
  • 20/3
  • 2 total stops
  • 19h 55m total
  • Barcelona to San Francisco
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Highest demand for flights based on searches. 20% potential increase in price (£94 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£10 potential savings vs. average return price).
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Average for round-trip flights in November 2025
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Find flight deals from Barcelona-El Prat to San Francisco

Enter your travel dates to find the best prices.

Cheapest flights from Barcelona-El Prat to San Francisco
Explore the most affordable flight options available from Barcelona-El Prat to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 November 2025.

Sat 22/1106:45BCN - SFO
1 stop17h 00mTAP AIR PORTUGAL
Sat 29/1116:35SFO - BCN
1 stop15h 40mTAP AIR PORTUGAL
Deal found 6/11£438
Tue 25/1106:45BCN - SFO
1 stop18h 45mSWISS
Fri 5/1219:25SFO - BCN
1 stop18h 35mSWISS
Deal found 4/11£460
Fri 12/1221:10BCN - SFO
1 stop26h 35mTAP AIR PORTUGAL
Sat 27/1216:35SFO - BCN
1 stop32h 30mTAP AIR PORTUGAL
Deal found 6/11£464
Tue 25/1109:55BCN - SFO
1 stop15h 00mUnited Airlines
Fri 5/1223:20SFO - BCN
1 stop24h 00mUnited Airlines
Deal found 6/11£466
Fri 21/1106:00BCN - SFO
1 stop14h 50mMultiple Airlines
Wed 11/316:40SFO - BCN
1 stop16h 25mMultiple Airlines
Deal found 7/11£467
Sun 23/1109:55BCN - SFO
1 stop19h 15mUnited Airlines
Mon 9/323:20SFO - BCN
1 stop25h 00mUnited Airlines
Deal found 7/11£467
Sat 22/1111:10BCN - SFO
1 stop33h 40mDelta
Mon 9/308:55SFO - BCN
2 stops22h 05mDelta
Deal found 7/11£468
Thu 20/1109:55BCN - SFO
1 stop15h 00mUnited Airlines
Tue 25/1118:50SFO - BCN
1 stop16h 00mUnited Airlines
Deal found 6/11£469
Fri 5/1213:50BCN - SFO
1 stop15h 20mUnited Airlines
Mon 15/1200:43SFO - BCN
2 stops23h 17mUnited Airlines
Deal found 6/11£470
Mon 24/1109:55BCN - SFO
2 stops20h 02mUnited Airlines
Fri 5/1207:25SFO - BCN
2 stops16h 35mUnited Airlines
Deal found 5/11£470
Sat 22/1106:50BCN - SFO
2 stops20h 00mUnited Airlines
Sat 14/323:20SFO - BCN
1 stop25h 00mUnited Airlines
Deal found 7/11£471

Cheapflights Fare Finder

 
Customise your flight search to find flights from Barcelona-El Prat to San Francisco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 November 2025.
Use the filters below to find and compare flights from Barcelona-El Prat Airport to San Francisco that are best for you.

Fly from

Barcelona-El Prat

Fly to

San Francisco

Route

Depart

Return

Price

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Mon 16/2

05:50-12:40

1 stop15h 50m

San Francisco

Mon 23/2

05:10-09:35

2 stops19h 25m

£422

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Tue 17/2

09:55-15:55

1 stop15h 00m

San Francisco

Thu 26/2

13:25-17:35

2 stops19h 10m

£425

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Wed 11/2

09:55-15:55

1 stop15h 00m

San Francisco

Thu 26/2

13:30-17:35

1 stop19h 05m

£425

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Thu 12/2

06:50-15:55

1 stop18h 05m

San Francisco

Thu 26/2

13:25-17:35

2 stops19h 10m

£425

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Wed 11/2

09:55-15:55

1 stop15h 00m

San Francisco

Tue 24/2

06:45-11:55

2 stops20h 10m

£426

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Tue 17/2

09:55-15:55

1 stop15h 00m

San Francisco

Tue 24/2

06:45-11:55

2 stops20h 10m

£426

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Thu 12/2

06:50-15:55

1 stop18h 05m

San Francisco

Wed 25/2

13:40-17:45

1 stop19h 05m

£426

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Mon 16/2

05:50-12:40

1 stop15h 50m

San Francisco

Wed 25/2

13:35-17:45

2 stops19h 10m

£427

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Mon 16/2

05:50-23:11

2 stops26h 21m

San Francisco

Thu 26/2

13:25-17:35

2 stops19h 10m

£429

BarcelonaSan Francisco

BCN - SFO

BCNSFO

Barcelona-El Prat

Sat 22/11

06:45-14:45

1 stop17h 00m

San Francisco

Sat 29/11

16:35-17:15

1 stop15h 40m

£438

Flights are sorted by cheapest return flights first.

Deals found on 5/11

Showing 1-10 of 17 results
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Best time to book a flight from Barcelona-El Prat to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Barcelona-El Prat with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Barcelona-El Prat Airport to San Francisco

How far ahead should I book a flight from Barcelona-El Prat Airport to San Francisco?

Use this chart to determine the optimal time to book a return flight from Barcelona-El Prat to San Francisco. Price data was last updated on 31 October 2025.

To ensure you get the cheapest price possible for a flight from Barcelona-El Prat Airport to San Francisco, you should look to book at least 35 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Barcelona-El Prat Airport to San Francisco?

Currently, February is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to San Francisco (average of £235). Flying from Barcelona-El Prat Airport to San Francisco in July is currently the most expensive (average of £508). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BCN to SFO?

Find hourly flight availability from Barcelona-El Prat to San Francisco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 November 2025.

It’s optimal to fly from Barcelona-El Prat Airport to San Francisco in the evening. By choosing this option you can save up to 22% on the cost of your flight, compared to a flight at midday.

Related info for your journey

Find useful and relevant information for your journey from Barcelona-El Prat to San Francisco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to San Francisco from Barcelona-El Prat?

    For a flight from Barcelona-El Prat to San Francisco, you will be flying into San Francisco. San Francisco (SFO) is just 11.8 mi from the center of the city. San Francisco is the only San Francisco airport and it handles 0 inbound flights from Barcelona-El Prat per day. 0 airlines have flights to San Francisco from Barcelona-El Prat on a regular basis.

  • How long is the flight from Barcelona-El Prat Airport to San Francisco?

    United Airlines can get you from Barcelona-El Prat Airport to San Francisco in just under 15h. Your travel time can differ by up to . Barcelona-El Prat Airport and San Francisco are separated by a distance of 5952 mi.

  • What are the most reliable airlines from Barcelona-El Prat Airport to San Francisco?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Barcelona-El Prat Airport to San Francisco on time: Vueling (86%), American Airlines (79%), Qatar Airways (75%).

  • Can I find deals for flights from Barcelona-El Prat to San Francisco that include hotel bookings?

    Yes. In addition to deals on Barcelona-El Prat to San Francisco flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Barcelona-El Prat to San Francisco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Barcelona-El Prat to San Francisco.

  • Can I find deals for business class flights from Barcelona-El Prat to San Francisco?

    Yes. Cheapflights offers flight deals from Barcelona-El Prat to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Barcelona-El Prat Airport to San Francisco?

    Currently, February is the cheapest month in which you can book a flight from Barcelona-El Prat Airport to San Francisco (average of £235). Flying from Barcelona-El Prat Airport to San Francisco in July is currently the most expensive (average of £508). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near San Francisco?

Book flights to San Francisco if you plan to visit one of these locations
Santa Cruz
Newark
South San Francisco
San Bruno
Bodega Bay
Pacific Grove

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Alternative routes for Barcelona-El Prat to San Francisco

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Barcelona-El Prat to Los Angeles flights

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How does Cheapflights help users find flights from Barcelona-El Prat to San Francisco?

Deals for Barcelona-El Prat to San Francisco flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Barcelona-El Prat to San Francisco?

Cheapflights helps you find that perfect flight to San Francisco from Barcelona-El Prat by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Barcelona-El Prat to San Francisco with no change fees?

Certainly. Search results for flights to San Francisco from Barcelona-El Prat shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Barcelona-El Prat to San Francisco become cheaper?

Not ready to book yet? You can track prices for flights from Barcelona-El Prat to San Francisco on Cheapflights with our Price Alert feature and get notified when better prices are available.

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