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Bilbao

$311+ 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 3/24. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BIO
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
1 adult, Economy
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Cheap 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 January 26, 2026.

This oojo deal was found by Cheapflights users on 1/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/145:35 pm
SFO
-
BIO
1 stop16h 20m
TAP AIR PORTUGAL
Sun 3/226:40 pm
BIO
-
SFO
1 stop28h 55m
TAP AIR PORTUGAL
Deal found 1/24$441
This oojo deal was found by Cheapflights users on 1/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/74:35 pm
SFO
-
BIO
1 stop33h 55m
TAP AIR PORTUGAL
Wed 4/2912:25 pm
BIO
-
SFO
1 stop37h 10m
TAP AIR PORTUGAL
Deal found 1/24$452
This Turkish Airlines deal was found by Cheapflights users on 1/25. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/156:45 pm
SFO
-
BIO
1 stop31h 25m
Turkish Airlines
Wed 4/226:15 pm
BIO
-
SFO
1 stop31h 25m
Turkish Airlines
Deal found 1/25$647
This oojo deal was found by Cheapflights users on 1/24. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/18:15 pm
SFO
-
BIO
2 stops30h 15m
TAP AIR PORTUGAL
Tue 9/226:50 pm
BIO
-
SFO
1 stop28h 45m
TAP AIR PORTUGAL
Deal found 1/24$649
This oojo deal was found by Cheapflights users on 1/23. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/17:35 pm
SFO
-
BIO
1 stop31h 05m
TAP AIR PORTUGAL
Sun 8/167:45 pm
BIO
-
SFO
1 stop27h 45m
TAP AIR PORTUGAL
Deal found 1/23$663
This Kiwi.com deal was found by Cheapflights users on 1/24. 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 9/17:50 pm
SFO
-
BIO
1 stop27h 25m
Multiple Airlines
Tue 9/226:45 am
BIO
-
SFO
1 stop18h 35m
Multiple Airlines
Deal found 1/24$665
This Mytrip deal was found by Cheapflights users on 1/24. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/54:40 pm
SFO
-
BIO
2 stops18h 25m
Multiple Airlines
Sun 3/1512:45 pm
BIO
-
SFO
2 stops34h 50m
Multiple Airlines
Deal found 1/24$679
This LEVEL deal was found by Cheapflights users on 1/26. 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 LEVEL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/137:50 pm
SFO
-
BIO
1 stop27h 25m
LEVEL
Sun 9/207:10 am
BIO
-
SFO
1 stop19h 55m
LEVEL
Deal found 1/26$681
This KAYAK deal was found by Cheapflights users on 1/24. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/306:45 pm
SFO
-
BIO
1 stop37h 35m
Turkish Airlines
Tue 4/1412:10 pm
BIO
-
SFO
1 stop37h 30m
Turkish Airlines
Deal found 1/24$686
This Kiwi.com deal was found by Cheapflights users on 1/26. 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 3/107:50 pm
SFO
-
BIO
1 stop36h 20m
Turkish Airlines
Sun 3/155:10 pm
BIO
-
SFO
1 stop32h 35m
Turkish Airlines
Deal found 1/26$702
This Turkish Airlines deal was found by Cheapflights users on 1/24. 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 Turkish Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 2/86:50 pm
SFO
-
BIO
1 stop31h 10m
Turkish Airlines
Sun 3/155:10 pm
BIO
-
SFO
1 stop32h 35m
Turkish Airlines
Deal found 1/24$707

Find 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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$441
(oojo)

One-way from

$311
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$650
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. 17% potential increase in price ($173 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 January 26, 2026.
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

Fri 4/17

8:20 pm-6:05 pm

1 stop36h 45m

Bilbao

Wed 4/29

12:25 pm-4:35 pm

1 stop37h 10m

$452

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 3/30

6:45 pm-5:20 pm

1 stop37h 35m

Bilbao

Tue 4/14

12:10 pm-4:40 pm

1 stop37h 30m

$686

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 3/10

7:50 pm-4:10 pm

1 stop36h 20m

Bilbao

Mon 3/23

12:00 pm-12:05 pm

1 stop32h 05m

$726

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Wed 3/18

7:50 pm-11:00 am

1 stop31h 10m

Bilbao

Sun 3/22

5:10 pm-5:45 pm

1 stop32h 35m

$729

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Wed 4/15

9:05 pm-11:25 pm

1 stop17h 20m

Bilbao

Wed 4/22

6:50 am-5:12 pm

2 stops19h 22m

$740

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Fri 3/13

7:50 pm-4:10 pm

1 stop36h 20m

Bilbao

Sat 3/21

12:00 pm-5:45 pm

1 stop37h 45m

$747

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Wed 2/25

6:50 pm-11:00 am

1 stop31h 10m

Bilbao

Sun 3/1

5:10 pm-4:45 pm

1 stop32h 35m

$751

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 4/7

12:55 pm-5:20 pm

1 stop19h 25m

Bilbao

Wed 4/29

2:25 pm-10:50 am

2 stops29h 25m

$753

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 4/7

2:04 pm-5:30 pm

2 stops18h 26m

Bilbao

Wed 4/29

6:45 am-3:59 pm

2 stops18h 14m

$784

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 3/24

7:32 pm-3:55 pm

3 stops36h 23m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 17 results
1
2

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 January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy2 starsTrust Score*2 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
SmartFaresPrice Accuracy1 starTrust Score*1 star

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Bilbao flight deals on Cheapflights vs. FlightHub >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 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 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 January 23, 2026.

The best time to book flights from San Francisco to Bilbao is 86 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, March is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $396). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $901). 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.

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 January 26, 2026.
Read reviews from past customers who have flown Delta, KLM, and United Airlines from San Francisco to Bilbao. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,118 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

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
7.9
Good
8,118 reviews
Delta
7.9
Good
8,118 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

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
7.7
Good
1,443 reviews
Delta
7.9
Good
8,118 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

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.
United Airlines
7.4
Good
9,205 reviews
Delta
7.9
Good
8,118 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

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.
Lufthansa
6.8
Okay
7,748 reviews
Delta
7.9
Good
8,118 reviews

Boarding

8.1

Food

7.2

Entertainment

7.8

Comfort

7.9

Overall

7.9

Crew

8.5

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.

  • How long is the flight from San Francisco to Bilbao?

    There are many flights that can get you from San Francisco to Bilbao in 17h 20m. Fly via TAP AIR PORTUGAL, Turkish Airlines, or Lufthansa to get the fastest option. The distance from San Francisco to Bilbao is about 5678 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest airlines flying from San Francisco to Bilbao round-trip?

    Currently priced at $380, LEVEL will fly you from San Francisco to Bilbao and back. In addition to LEVEL, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from SWISS and KLM - these airlines can fly you to your destination from $447 and $470, respectively. LEVEL is 52% 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 Lufthansa. According to our data, you can fly for as low as $342. Users have also found prices from $343 and $391 on TAP AIR PORTUGAL and Scandinavian Airlines, 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, March is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $396). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $901). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 7 airlines flying from San Francisco to Bilbao

Discover the top 7 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$380Average$705FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$447Average$723FlexibilityNo cancel feeOn-time79%
KLMCheapest$470Average$655FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$472Average$688FlexibilityNo cancel feeOn-time76%
IberiaCheapest$545Average$1,028FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$576Average$952FlexibilityNo cancel feeOn-time69%
DeltaCheapest$675Average$894FlexibilityNo cancel feeOn-timeN/A

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