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$308+ Cheap flights from Bilbao (BIO) to San Francisco (SFO)

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 3/12. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SFO
Jan 26 — Feb 21
Sun 1/26
Sun 2/2
1 adult, Economy
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The best prices from Bilbao to San Francisco are usually found in February or January, booked 59 days in advance, depart on a Wednesday or Tuesday and return on a Sunday

Cheap flight deals from Bilbao to San Francisco

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) 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 January 21, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$337
(Finnair)

One-way from

$308
(French Bee)

Popular in

July

Cheapest in

February

Average price

$443
Provider with most accurate pricing for Bilbao-San Francisco flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bilbao-San Francisco flights.
Search Deals
From Bilbao to San Francisco
Search Deals
One-way flight from Bilbao to San Francisco
Search Deals
Highest demand for flights based on searches. 19% potential increase in price ($155 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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Find flight deals from Bilbao to San Francisco

Cheapest flights from Bilbao to San Francisco
Explore the most affordable flight options available from Bilbao to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on January 21, 2025.

This Iberia deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/81:30 pmBIO - SFO
2 stops19h 47mIberia
Thu 10/232:28 pmSFO - BIO
2 stops17h 27mIberia
Deal found 1/21$324
This Finnair deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/286:45 amBIO - SFO
2 stops23h 15mMultiple Airlines
Fri 3/1410:52 pmSFO - BIO
2 stops40h 23mMultiple Airlines
Deal found 1/21$337
This American Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/66:45 amBIO - SFO
2 stops21h 21mAmerican Airlines
Fri 2/217:20 amSFO - BIO
2 stops16h 10mAmerican Airlines
Deal found 1/21$346
This Delta deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/46:50 amBIO - SFO
1 stop14h 00mDelta
Tue 2/116:15 amSFO - BIO
2 stops20h 15mDelta
Deal found 1/21$347
This United Airlines deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2511:35 amBIO - SFO
1 stop16h 10mUnited Airlines
Wed 3/122:35 pmSFO - BIO
1 stop23h 15mUnited Airlines
Deal found 1/21$361
This Lufthansa deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/96:45 pmBIO - SFO
1 stop33h 00mLufthansa
Mon 3/249:35 pmSFO - BIO
1 stop16h 15mLufthansa
Deal found 1/21$374
This SWISS deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/248:40 amBIO - SFO
1 stop16h 30mSWISS
Wed 5/72:00 pmSFO - BIO
1 stop32h 50mSWISS
Deal found 1/21$379
This Finnair deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/256:45 amBIO - SFO
2 stops25h 24mFinnair
Sat 5/105:45 pmSFO - BIO
1 stop20h 30mFinnair
Deal found 1/21$391
This Air Canada deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/216:45 amBIO - SFO
2 stops23h 21mAir Canada
Mon 3/178:30 amSFO - BIO
2 stops19h 15mAir Canada
Deal found 1/21$456
This KLM deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/97:10 amBIO - SFO
2 stops17h 50mKLM
Wed 9/243:00 pmSFO - BIO
2 stops16h 30mKLM
Deal found 1/21$493
This Kissandfly.com deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kissandfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/166:10 pmBIO - SFO
1 stop30h 35mAer Lingus
Tue 5/275:45 pmSFO - BIO
1 stop14h 45mAer Lingus
Deal found 1/21$528
This TAP AIR PORTUGAL deal was found by Cheapflights users on 1/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/247:45 pmBIO - SFO
1 stop27h 45mTAP AIR PORTUGAL
Tue 9/94:20 pmSFO - BIO
1 stop34h 10mTAP AIR PORTUGAL
Deal found 1/21$704

Find flights from Bilbao to San Francisco within your budget

Customize your flight search to find flights from Bilbao 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 2,558,603 searches. Data last updated January 21, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Fri 2/28

6:45 am-9:00 pm

2 stops23h 15m

San Francisco

Fri 3/14

10:52 pm-11:15 pm

2 stops40h 23m

$337

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Thu 2/6

6:45 am-7:06 pm

2 stops21h 21m

San Francisco

Fri 2/21

7:20 am-8:30 am

2 stops16h 10m

$346

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Tue 2/4

6:50 am-11:50 am

1 stop14h 00m

San Francisco

Tue 2/11

6:15 am-11:30 am

2 stops20h 15m

$347

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Tue 2/25

11:35 am-6:45 pm

1 stop16h 10m

San Francisco

Wed 3/12

2:35 pm-9:50 pm

1 stop23h 15m

$361

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Sun 3/9

6:45 pm-7:45 pm

1 stop33h 00m

San Francisco

Mon 3/24

9:35 pm-9:50 pm

1 stop16h 15m

$374

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Thu 4/24

8:40 am-4:10 pm

1 stop16h 30m

San Francisco

Wed 5/7

2:00 pm-7:50 am

1 stop32h 50m

$379

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Fri 4/25

6:45 am-11:09 pm

2 stops25h 24m

San Francisco

Sat 5/10

5:45 pm-11:15 pm

1 stop20h 30m

$391

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Wed 2/26

9:15 am-9:23 pm

2 stops21h 08m

San Francisco

Wed 3/12

10:37 am-12:50 pm

2 stops18h 13m

$443

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Fri 2/21

6:45 am-9:06 pm

2 stops23h 21m

San Francisco

Mon 3/17

8:30 am-11:45 am

2 stops19h 15m

$456

BilbaoSan Francisco

BIO - SFO

BIOSFO

Bilbao

Fri 5/16

6:10 pm-3:45 pm

1 stop30h 35m

San Francisco

Tue 5/27

5:45 pm-5:30 pm

1 stop14h 45m

$528

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/21

Showing 1-10 of 19 results
1
2

Compare providers for flights from Bilbao to San Francisco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Bilbao to San Francisco in January.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Bilbao-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-San Francisco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bilbao-San Francisco flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Bilbao-San Francisco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Bilbao to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Bilbao with our price prediction graph.
Estimated round-trip 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.

Travel insights for flights from Bilbao to San Francisco

Get recent, data-driven insights about flights from Bilbao to San Francisco including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Bilbao to San Francisco?

Use this chart to determine the optimal time to book a round-trip flight from Bilbao to San Francisco. Price data was last updated on January 17, 2025.

The price you pay for your flight from Bilbao to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 59 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Bilbao to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Bilbao to San Francisco (average of $276). Flying from Bilbao to San Francisco in June is currently the most expensive (average of $405). 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 BIO to SFO?

Find hourly flight availability from Bilbao 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 January 21, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 14% on flights from Bilbao to San Francisco by exploring options for tickets in the afternoon.

Rainfall in San Francisco by month

Plan your trip to San Francisco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

Temperature in San Francisco by month

Plan your trip to San Francisco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

Reviews of airlines servicing San Francisco

Get insights into the airlines that provide service to San Francisco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Francisco. Reviews last updated January 21, 2025.
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,521 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,341 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,600 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Air France
7.4
Good
1,490 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

United Airlines
7.4
Good
8,985 reviews
Delta
8.0
Very good
8,521 reviews

Comfort

8.0

Crew

8.6

Food

7.3

Boarding

8.2

Entertainment

7.9

Overall

8.0

Reviews

1 / 10

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Bilbao 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 are the cheapest airlines flying from Bilbao to San Francisco round-trip?

    American Airlines, at $346, was found to be the cheapest airline from Bilbao to San Francisco.Alternate airlines to your destination round-trip include Delta and United Airlines. American Airlines is 46% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Bilbao to San Francisco one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $485. KLM flights start at $540 while deals on Iberia start at $838 one-way.

  • Can I find deals for flights from Bilbao to San Francisco that include hotel bookings?

    Yes. In addition to deals on Bilbao to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Bilbao to San Francisco?

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

  • Can I find deals for business class flights from Bilbao to San Francisco?

    Yes. Cheapflights offers flight deals from Bilbao 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 Bilbao to San Francisco?

    Currently, January is the cheapest month in which you can book a flight from Bilbao to San Francisco (average of $276). Flying from Bilbao to San Francisco in June is currently the most expensive (average of $405). 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

Traveling to a place near Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
Roseville
Mountain View
Turlock
Santa Cruz
Fairfield
Manteca
Sausalito
Watsonville
Hayward
Richmond
Hollister
South San Francisco
Antioch
Milpitas
Elk Grove
Newark
Alameda
Campbell
Lathrop
Pacific Grove

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Top 3 airlines flying from Bilbao to San Francisco

Discover the top 3 airlines that operate flights from Bilbao to San Francisco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated January 21, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$432Average$866FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$467Average$698FlexibilityNo cancel feeOn-time76%
KLMCheapest$630Average$1,011FlexibilityNo cancel feeOn-time75%
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