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Bilbao

$444+ Cheap flights from San Francisco (SFO) to Bilbao (BIO)

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 6/22. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BIO
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from San Francisco to Bilbao are usually found in September or March, booked 31 days in advance, depart on a Sunday or Tuesday and return on a Wednesday

Cheap flight deals from San Francisco to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) to Bilbao (BIO). 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 April 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$580
(Kiwi.com)

One-way from

$444
(Kiwi.com)

Popular in

June

Cheapest in

September

Average price

$989
Provider with most accurate pricing for San Francisco-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Francisco-Bilbao flights.
Search Deals
From San Francisco to Bilbao
Search Deals
One-way flight from San Francisco to Bilbao
Search Deals
Highest demand for flights based on searches. 15% potential increase in price ($177 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
Search Deals

Find flight deals from San Francisco to Bilbao

Cheapest flights from San Francisco to Bilbao
Explore the most affordable flight options available from San Francisco to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/168:10 pmSFO - BIO
1 stop28h 45mVueling
Tue 9/238:55 amBIO - SFO
1 stop18h 15mVueling
Deal found 4/17$580
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:35 pmSFO - BIO
1 stop16h 15mMultiple Airlines
Thu 11/276:45 amBIO - SFO
2 stops17h 50mMultiple Airlines
Deal found 4/17$584
This Air Canada deal was found by Cheapflights users on 4/17. 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.
Sun 11/911:55 amSFO - BIO
2 stops21h 10mAir Canada
Thu 11/276:45 amBIO - SFO
2 stops25h 36mAir Canada
Deal found 4/17$585
This KLM deal was found by Cheapflights users on 4/16. 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 10/73:05 pmSFO - BIO
1 stop16h 35mKLM
Tue 11/115:20 pmBIO - SFO
1 stop27h 30mKLM
Deal found 4/16$594
This FlightHub deal was found by Cheapflights users on 4/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/98:35 pmSFO - BIO
1 stop16h 15mLufthansa
Thu 11/2711:35 amBIO - SFO
1 stop16h 10mLufthansa
Deal found 4/17$595
This United Airlines deal was found by Cheapflights users on 4/16. 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 10/76:00 amSFO - BIO
2 stops20h 05mUnited Airlines
Tue 11/116:45 amBIO - SFO
2 stops21h 27mUnited Airlines
Deal found 4/16$596
This Iberia deal was found by Cheapflights users on 4/17. 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.
Sat 9/138:10 pmSFO - BIO
1 stop27h 05mIberia
Sun 9/287:10 amBIO - SFO
1 stop20h 00mIberia
Deal found 4/17$608
This SWISS deal was found by Cheapflights users on 4/17. 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.
Mon 9/157:30 pmSFO - BIO
1 stop15h 45mSWISS
Tue 9/239:00 pmBIO - SFO
2 stops51h 28mSWISS
Deal found 4/17$641
This Delta deal was found by Cheapflights users on 4/17. 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.
Sun 9/143:05 pmSFO - BIO
1 stop16h 35mDelta
Tue 9/236:50 amBIO - SFO
2 stops25h 30mDelta
Deal found 4/17$653
This Air France deal was found by Cheapflights users on 4/17. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/143:05 pmSFO - BIO
1 stop16h 35mAir France
Fri 9/267:10 amBIO - SFO
2 stops17h 50mAir France
Deal found 4/17$659
This Finnair deal was found by Cheapflights users on 4/17. 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.
Tue 5/65:45 pmSFO - BIO
1 stop20h 30mFinnair
Wed 5/146:45 amBIO - SFO
2 stops26h 04mFinnair
Deal found 4/17$684
This American Airlines deal was found by Cheapflights users on 4/17. 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.
Tue 5/135:45 pmSFO - BIO
1 stop18h 05mAmerican Airlines
Wed 5/216:45 amBIO - SFO
2 stops21h 52mAmerican Airlines
Deal found 4/17$694

Cheapflights Fare Finder

Customize your flight search to find flights from San Francisco to Bilbao 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 April 17, 2025.
Use the filters below to find and compare flights from San Francisco to Bilbao that are best for you.

Fly from

San Francisco

Fly to

Bilbao

Route

Depart

Return

Price

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 5/6

5:45 pm-11:15 pm

1 stop20h 30m

Bilbao

Wed 5/14

6:45 am-11:49 pm

2 stops26h 04m

$684

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 5/6

12:35 pm-5:50 pm

2 stops20h 15m

Bilbao

Wed 5/14

6:45 am-9:46 pm

2 stops24h 01m

$685

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 5/13

3:05 pm-10:00 pm

1 stop21h 55m

Bilbao

Wed 5/21

6:50 am-11:45 am

1 stop13h 55m

$693

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 5/13

5:45 pm-8:50 pm

1 stop18h 05m

Bilbao

Wed 5/21

6:45 am-7:37 pm

2 stops21h 52m

$694

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 5/13

8:58 am-4:40 pm

2 stops22h 42m

Bilbao

Wed 5/21

6:50 am-6:56 pm

2 stops21h 06m

$709

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Sun 5/4

9:05 pm-11:25 pm

1 stop17h 20m

Bilbao

Mon 5/12

7:10 pm-12:40 pm

1 stop26h 30m

$717

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Sun 5/4

7:40 pm-2:45 pm

2 stops34h 05m

Bilbao

Mon 5/12

2:10 pm-12:40 pm

1 stop31h 30m

$720

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Fri 5/16

2:00 pm-8:20 am

1 stop33h 20m

Bilbao

Fri 5/23

8:55 am-4:10 pm

1 stop16h 15m

$783

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Sat 5/17

12:40 pm-11:05 am

1 stop37h 25m

Bilbao

Wed 5/21

6:25 pm-4:40 pm

1 stop31h 15m

$800

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Sun 5/18

8:25 pm-10:00 pm

1 stop16h 35m

Bilbao

Mon 5/26

12:00 pm-11:45 am

1 stop32h 45m

$849

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 22 results
1
2
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Compare providers for flights from San Francisco to Bilbao

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 San Francisco to Bilbao in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice 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 San Francisco-Bilbao flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on San Francisco-Bilbao flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from San Francisco-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Francisco-Bilbao flights, Cheapflights users trust AranGrant the most. AranGrant 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 San Francisco-Bilbao 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 San Francisco to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from San Francisco 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.

Cheapflights Insights

Everything you need to know about your flight from San Francisco to Bilbao

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

Use this chart to determine the optimal time to book a round-trip flight from San Francisco to Bilbao. Price data was last updated on April 11, 2025.

The best time to book flights from San Francisco to Bilbao is 31 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $541). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $1,178). 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 SFO to BIO?

Find hourly flight availability from San Francisco to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 17, 2025.

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

What is the cheapest day to fly from San Francisco to Bilbao?

Use this chart to determine the cheapest time to fly round-trip from San Francisco to Bilbao. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their San Francisco to Bilbao flight should consider departing on Sunday afternoons when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Bilbao by month

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

In terms of precipitation, rainfall in Bilbao ranges from 2.4 - 5.6 inches per month. November is typically the wettest month, when rainfall can reach 5.6 in. July is typically the driest time to visit Bilbao when rainfall is around 2.4 in.

Temperature in Bilbao by month

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

If weather is an important factor for your trip to Bilbao, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 68.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 48.2 F).

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. 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 Bilbao. Reviews last updated April 17, 2025.
Delta
8.0
Very good
7,916 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,916 reviews
Delta
8.0
Very good
7,916 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,327 reviews
Delta
8.0
Very good
7,916 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,916 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,916 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
SWISS
7.5
Good
1,580 reviews
Delta
8.0
Very good
7,916 reviews

Entertainment

7.9

Comfort

7.9

Crew

8.5

Overall

8.0

Food

7.3

Boarding

8.2

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from San Francisco to Bilbao. 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 San Francisco to Bilbao round-trip?

    Currently priced at $580, Vueling will fly you from San Francisco to Bilbao and back. In addition to Vueling, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from KLM and United Airlines - these airlines can fly you to your destination from $594 and $596, respectively. Vueling is 38% cheaper than the average price of flights available within the next 90 days to this destination.

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

    For one-way options, check prices for KLM. According to our data, you can fly for as low as $565. Users have also found prices from $568 and $569 on United Airlines and Air France, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $541). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $1,178). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 9 airlines flying from San Francisco to Bilbao

Discover the top 9 airlines that operate flights from San Francisco to Bilbao. 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$501Average$1,062FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$557Average$1,123FlexibilityNo cancel feeOn-time76%
SWISSCheapest$597Average$687FlexibilityNo cancel feeOn-time79%
United AirlinesCheapest$600Average$992FlexibilityNo cancel feeOn-time69%
KLMCheapest$620Average$942FlexibilityNo cancel feeOn-time75%
DeltaCheapest$640Average$981FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$703Average$1,109FlexibilityNo cancel feeOn-time77%
Air FranceCheapest$730Average$1,495FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$966Average$1,302FlexibilityNo cancel feeOn-time67%

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