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$304+ Cheap flights from California 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 11/30. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — BIO
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
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Cheap flight deals from California to Bilbao

Keep the following information in mind while searching for California to Bilbao flight deals. Data was last updated October 29, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$507
(CrystalTravel)

One-way from

$304
(Kiwi.com)

Popular in

December

Cheapest in

February

Average price

$784
Provider with most accurate pricing for Los Angeles-Bilbao flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Bilbao flights.
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From California to Bilbao
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One-way flight from California to Bilbao
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Highest demand for flights based on searches. 22% potential increase in price ($281 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($74 potential savings vs. average RT price).
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Average for round-trip flights in October 2025
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Find flight deals from California to Bilbao

Cheapest flights from California to Bilbao
Explore the most affordable flight options available from California to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This oojo deal was found by Cheapflights users on 10/29. 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.
Mon 12/14:35 pmSFO - BIO
1 stop16h 20mTAP AIR PORTUGAL
Sun 12/76:40 pmBIO - SFO
1 stop28h 55mTAP AIR PORTUGAL
Deal found 10/29$519
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Wed 11/196:00 amSFO - BIO
2 stops25h 10mUnited Airlines
Wed 11/267:25 amBIO - SFO
1 stop21h 10mUnited Airlines
Deal found 10/29$532
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1111:07 amLAS - BIO
2 stops25h 48mUnited Airlines
Thu 12/186:45 amBIO - LAS
2 stops26h 44mUnited Airlines
Deal found 10/27$532
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Fri 11/285:30 pmLAX - BIO
1 stop20h 50mUnited Airlines
Mon 12/112:50 pmBIO - LAX
2 stops55h 54mUnited Airlines
Deal found 10/28$537
This United Airlines deal was found by Cheapflights users on 10/29. 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 11/259:40 pmSFO - BIO
1 stop15h 15mUnited Airlines
Tue 12/212:50 pmBIO - SFO
1 stop32h 50mUnited Airlines
Deal found 10/29$543
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Fri 11/2810:00 amLAS - BIO
2 stops28h 20mUnited Airlines
Fri 12/512:50 pmBIO - LAS
2 stops29h 07mUnited Airlines
Deal found 10/29$546
This United Airlines deal was found by Cheapflights users on 10/29. 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.
Mon 12/16:30 amSJC - BIO
2 stops31h 35mUnited Airlines
Sun 12/711:35 amBIO - SJC
2 stops58h 57mUnited Airlines
Deal found 10/29$550
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:40 pmSFO - BIO
1 stop15h 15mUnited Airlines
Thu 12/1812:50 pmBIO - SFO
2 stops33h 30mUnited Airlines
Deal found 10/27$563
This Finnair deal was found by Cheapflights users on 10/27. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/116:30 amSAN - BIO
2 stops31h 45mMultiple Airlines
Thu 12/186:45 amBIO - SAN
2 stops24h 00mMultiple Airlines
Deal found 10/27$563
This United Airlines deal was found by Cheapflights users on 10/27. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/121:30 pmSFO - BIO
1 stop19h 35mUnited Airlines
Sun 11/166:45 amBIO - SFO
1 stop22h 25mUnited Airlines
Deal found 10/27$574
This United Airlines deal was found by Cheapflights users on 10/28. 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.
Wed 11/128:45 amSJC - BIO
2 stops28h 10mUnited Airlines
Sun 11/166:45 amBIO - SJC
2 stops24h 43mUnited Airlines
Deal found 10/28$588
This KLM deal was found by Cheapflights users on 10/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/119:50 amSJC - BIO
2 stops16h 40mKLM
Thu 12/187:25 amBIO - SJC
2 stops20h 31mKLM
Deal found 10/27$590

Cheapflights Fare Finder

 
Customize your flight search to find flights from California 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 October 29, 2025.
Use the filters below to find and compare flights from California to Bilbao that are best for you.

Fly from

California

Fly to

Bilbao

Route

Depart

Return

Price

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Thu 2/26

3:40 pm-5:20 pm

1 stop16h 40m

Bilbao

Thu 3/19

11:55 am-12:50 pm

1 stop32h 55m

$522

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Fri 2/27

1:30 pm-11:20 pm

1 stop24h 50m

Bilbao

Tue 3/17

6:45 am-4:55 pm

1 stop18h 10m

$522

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Sun 2/22

3:40 pm-5:20 pm

1 stop16h 40m

Bilbao

Wed 3/18

11:55 am-12:50 pm

1 stop32h 55m

$522

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Fri 2/27

1:30 pm-11:20 pm

1 stop24h 50m

Bilbao

Thu 3/19

12:50 pm-9:00 pm

1 stop16h 10m

$522

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Mon 2/23

3:40 pm-5:20 pm

1 stop16h 40m

Bilbao

Wed 3/18

11:55 am-12:50 pm

1 stop32h 55m

$522

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Tue 2/24

3:40 pm-5:20 pm

1 stop16h 40m

Bilbao

Thu 3/19

6:50 am-12:50 pm

1 stop14h 00m

$522

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Sun 2/22

8:55 am-5:20 pm

2 stops23h 25m

Bilbao

Thu 3/19

6:50 am-12:50 pm

1 stop14h 00m

$527

Las VegasBilbao

LAS - BIO

LASBIO

Las Vegas Harry Reid Intl

Thu 12/11

11:07 am-9:55 pm

2 stops25h 48m

Bilbao

Thu 12/18

6:45 am-12:29 am

2 stops26h 44m

$532

San FranciscoBilbao

SFO - BIO

SFOBIO

San Francisco

Wed 2/25

8:25 am-10:50 am

2 stops17h 25m

Bilbao

Tue 3/17

6:45 am-8:55 pm

2 stops22h 10m

$533

Los AngelesBilbao

LAX - BIO

LAXBIO

Los Angeles

Fri 11/28

8:20 am-11:20 pm

2 stops30h 00m

Bilbao

Mon 12/1

12:50 pm-11:44 am

2 stops55h 54m

$537

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

Showing 1-10 of 59 results
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Best time to book a flight from California to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from California 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 California to Bilbao

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

Currently, March is the cheapest month in which you can book a flight from California to Bilbao (average of $395). Flying from California 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.

What is the cheapest time of day to fly from CA to BIO?

Find hourly flight availability from California 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 October 29, 2025.

It’s typically best to fly out from California to Bilbao in the evening. Doing so could potentially save you 9% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from California to Bilbao?

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

Travelers seeking maximum savings on their California to Bilbao flight should consider departing on Wednesday mornings 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.

Related info for your journey

Find useful and relevant information for your journey from California to Bilbao. 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 Bilbao from California?

    For a flight from California to Bilbao, you will be flying into Bilbao. Bilbao (BIO) is just 3.0 mi from the center of the city.

  • How long is the flight from California to Bilbao?

    For as low as $522, Delta can have you in Bilbao from California in 16h 40m. Airlines will cover a distance of 5678 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as $365 on TAP AIR PORTUGAL. Other airlines that offer cheap prices include United Airlines from $449 and Delta from $450 one-way.

  • What are the most popular routes from California to Bilbao?

    Most travelers choose Los Angeles - Bilbao, San Francisco - Bilbao or Monterey Regional - Bilbao when deciding on the best route from California to Bilbao.

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

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

  • How can I find direct flights from California to Bilbao?

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

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

    Yes. Cheapflights offers flight deals from California 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 California to Bilbao?

    Currently, March is the cheapest month in which you can book a flight from California to Bilbao (average of $395). Flying from California 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

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Alternative routes for California to Bilbao

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Top 9 airlines flying from California to Bilbao

Discover the top 9 airlines that operate flights from California 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 October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LEVELCheapest$427Average$842FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$447Average$690FlexibilityNo cancel feeOn-time79%
KLMCheapest$470Average$893FlexibilityNo cancel feeOn-time75%
LufthansaCheapest$472Average$1,060FlexibilityNo cancel feeOn-time76%
DeltaCheapest$542Average$1,116FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$581Average$1,094FlexibilityNo cancel feeOn-time69%
IberiaCheapest$589Average$996FlexibilityNo cancel feeOn-time77%
American AirlinesCheapest$677Average$1,278FlexibilityNo cancel feeOn-time71%
Air FranceCheapest$684Average$1,975FlexibilityNo cancel feeOn-time77%

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