Bilbao

$351+ 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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BIO
مايو 28 — يونيو 41
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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 أبريل 28, 2026.

This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ن 8/174:30 pm
SFO
-
BIO
1 stop16h 30m
TAP AIR PORTUGAL
ر 8/2612:25 pm
BIO
-
SFO
1 stop35h 05m
TAP AIR PORTUGAL
Deal found 4/25$724
This Finnair deal was found by Cheapflights users on 4/24. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ث 9/295:55 pm
SFO
-
BIO
1 stop20h 20m
Multiple Airlines
ث 10/136:45 am
BIO
-
SFO
2 stops25h 14m
Multiple Airlines
Deal found 4/24$747
This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
س 8/157:35 pm
SFO
-
BIO
1 stop31h 05m
TAP AIR PORTUGAL
ر 8/2612:25 pm
BIO
-
SFO
1 stop35h 05m
TAP AIR PORTUGAL
Deal found 4/25$748
This Finnair deal was found by Cheapflights users on 4/26. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ث 10/138:24 am
SFO
-
BIO
2 stops29h 51m
Multiple Airlines
ر 10/216:45 am
BIO
-
SFO
2 stops26h 58m
Multiple Airlines
Deal found 4/26$751
This oojo deal was found by Cheapflights users on 4/26. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ث 10/134:20 pm
SFO
-
BIO
1 stop34h 10m
TAP AIR PORTUGAL
ر 10/2112:25 pm
BIO
-
SFO
1 stop35h 05m
TAP AIR PORTUGAL
Deal found 4/26$755
This SmartFares deal was found by Cheapflights users on 4/27. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ث 8/256:45 pm
SFO
-
BIO
1 stop37h 35m
Turkish Airlines
خ 9/36:20 pm
BIO
-
SFO
1 stop31h 20m
Turkish Airlines
Deal found 4/27$764
This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ن 8/174:30 pm
SFO
-
BIO
1 stop16h 30m
TAP AIR PORTUGAL
ث 8/256:50 pm
BIO
-
SFO
1 stop28h 45m
TAP AIR PORTUGAL
Deal found 4/25$776
This Trip.com deal was found by Cheapflights users on 4/27. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ر 8/266:45 pm
SFO
-
BIO
1 stop31h 25m
Turkish Airlines
خ 9/36:20 pm
BIO
-
SFO
1 stop25h 30m
Turkish Airlines
Deal found 4/27$777
This Justfly.com deal was found by Cheapflights users on 4/25. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ح 8/166:45 pm
SFO
-
BIO
1 stop31h 25m
Turkish Airlines
ر 8/266:20 pm
BIO
-
SFO
1 stop25h 30m
Turkish Airlines
Deal found 4/25$779
This Finnair deal was found by Cheapflights users on 4/25. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ح 8/168:45 am
SFO
-
BIO
2 stops28h 20m
Multiple Airlines
ث 8/256:45 am
BIO
-
SFO
2 stops25h 06m
Multiple Airlines
Deal found 4/25$781
This United Airlines deal was found by Cheapflights users on 4/26. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ث 10/139:05 pm
SFO
-
BIO
1 stop17h 20m
United Airlines
ر 10/216:50 am
BIO
-
SFO
1 stop14h 50m
United Airlines
Deal found 4/26$789

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 أبريل 28, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$724
(Justfly.com)

One-way from

$413
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$771
Provider with most accurate pricing for San Francisco-Bilbao flight deals.
Provider most trusted by Cheapflights users for San Francisco-Bilbao flights.
From San Francisco to Bilbao
One-way flight from San Francisco to Bilbao
Highest demand for flights based on searches. 20% potential increase in price ($200 potential increase over avg. RT price).
Cheapest flight prices on average. 4% potential price decrease ($34 potential savings vs. average RT price).
Average for round-trip flights in April 2026

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 أبريل 28, 2026.
Use the filters below to find and compare flights from San Francisco to Bilbao that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ث 8/25

6:45 pm-5:20 pm

1 stop37h 35m

Bilbao

خ 9/3

6:20 pm-4:40 pm

1 stop31h 20m

$764
Quickest round-trip

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ث 10/13

9:05 pm-11:25 pm

1 stop17h 20m

Bilbao

ر 10/21

6:50 am-12:40 pm

1 stop14h 50m

$789

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ر 9/2

11:00 am-11:15 pm

2 stops27h 15m

Bilbao

ن 9/7

9:35 pm-4:20 pm

1 stop27h 45m

$812

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

س 8/15

10:00 pm-9:50 am

2 stops26h 50m

Bilbao

ن 8/24

12:00 pm-11:45 am

1 stop32h 45m

$822

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ث 6/2

2:22 pm-4:30 pm

2 stops17h 08m

Bilbao

خ 6/11

12:00 pm-8:19 pm

2 stops17h 19m

$948

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

خ 5/21

9:05 pm-10:10 am

2 stops28h 05m

Bilbao

س 6/6

6:50 am-12:40 pm

1 stop14h 50m

$992

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

خ 8/27

2:00 pm-11:25 pm

1 stop24h 25m

Bilbao

ن 10/19

6:50 am-3:21 pm

2 stops17h 31m

$1,030

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ج 5/22

7:00 am-10:10 am

2 stops18h 10m

Bilbao

ج 5/29

6:45 am-9:50 pm

2 stops24h 05m

$1,041

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ح 8/9

8:10 pm-10:00 pm

1 stop16h 50m

Bilbao

س 8/15

10:30 am-12:50 pm

1 stop35h 20m

$1,066

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

ج 5/29

9:05 pm-11:25 pm

1 stop17h 20m

Bilbao

س 6/13

6:50 am-7:10 am

2 stops33h 20m

$1,087

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/23

Showing 1-10 of 21 resultsSorted by cheapest first
1
2
3

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*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
JustAirTicketPrice Accuracy-Trust Score*1 star
eDreamsPrice Accuracy2 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?

The best time to book flights from San Francisco to Bilbao is 85 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, October is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $559). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $1,162). 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.

How much does it cost to fly round-trip from San Francisco to Bilbao?

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 أبريل 28, 2026.
Read reviews from past customers who have flown KLM,United Airlines, andIberia 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.

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Boarding

7.8

Crew

8.4

Entertainment

7.1

Food

7.3

Comfort

7.7

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 16h 50m. Fly via Turkish Airlines, Delta, or KLM 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 $457, 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, October is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $559). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $1,162). 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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Alternative routes for San Francisco to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.

Top 6 airlines flying from San Francisco to Bilbao

Discover the top 6 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 أبريل 28, 2026.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$380Average$615FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$447Average$801FlexibilityNo cancel feeOn-time79%
KLMCheapest$457Average$662FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$472Average$682FlexibilityNo cancel feeOn-time76%
IberiaCheapest$545Average$817FlexibilityNo cancel feeOn-time77%
United AirlinesCheapest$572Average$946FlexibilityNo cancel feeOn-time69%

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