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$534+ Cheap flights from Bilbao (BIO) to San Diego (SAN)

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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from Bilbao to San Diego

Cheapest flights from Bilbao to San Diego
Explore the most affordable flight options available from Bilbao to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This KLM deal was found by Cheapflights users on 12/10. 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.
Sat 12/277:25 amBIO - SAN
2 stops17h 33mMultiple Airlines
Wed 12/3110:00 amSAN - BIO
2 stops16h 30mMultiple Airlines
Deal found 12/10$1,243
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/2711:35 amBIO - SAN
1 stop37h 10mLufthansa
Wed 12/315:35 pmSAN - BIO
1 stop15h 30mLufthansa
Deal found 12/10$1,574

Find flight deals from Bilbao to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to San Diego (SAN). 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 December 12, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
1 star

Round-trip from

$790
(United Airlines)

One-way from

$534
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,185
Provider with most accurate pricing for Bilbao-San Diego flight deals.
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Provider most trusted by Cheapflights users for Bilbao-San Diego flights.
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From Bilbao to San Diego
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One-way flight from Bilbao to San Diego
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($217 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($57 potential savings vs. average RT price).
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Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Bilbao to San Diego 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 December 12, 2025.
Use the filters below to find and compare flights from Bilbao to San Diego that are best for you.

Fly from

Bilbao

Fly to

San Diego

Route

Depart

Return

Price

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 2/18

12:50 pm-11:53 am

2 stops32h 03m

San Diego

Sun 2/22

12:40 pm-12:05 pm

2 stops38h 25m

$790

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 2/18

7:25 am-3:45 pm

1 stop17h 20m

San Diego

Sun 2/22

7:50 pm-12:05 pm

3 stops31h 15m

$790

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 12/27

7:25 am-3:58 pm

2 stops17h 33m

San Diego

Wed 12/31

10:00 am-11:30 am

2 stops16h 30m

$1,243

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 12/27

11:35 am-3:45 pm

1 stop37h 10m

San Diego

Wed 12/31

5:35 pm-6:05 pm

1 stop15h 30m

$1,574

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 4/25

6:45 am-1:20 pm

3 stops39h 35m

$535

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 1/8

6:15 pm-2:34 pm

3 stops53h 19m

$589

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 4/25

7:15 am-3:25 pm

1 stop17h 10m

$765

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Tue 1/6

6:40 pm-10:52 am

3 stops49h 12m

$799

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 1/7

5:10 pm-11:09 pm

2 stops38h 59m

$896

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 1/8

11:35 am-3:45 pm

1 stop37h 10m

$1,626

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 12 results
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  • Most accurate provider: When it comes to deals on Bilbao-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Bilbao-San Diego 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 Diego 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 Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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.

Cheapflights Insights

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

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

Currently, February is the cheapest month in which you can book a flight from Bilbao to San Diego (average of $611). Flying from Bilbao to San Diego in September is currently the most expensive (average of $1,242). 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.

Related info for your journey

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

    There are many flights that can get you from Bilbao to San Diego in 17h 20m. Fly via Air Canada or United Airlines to get the fastest option. Bilbao and San Diego are separated by a distance of 5742 mi. This flight may include one or multiple stops.

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from Bilbao to San Diego (average of $611). Flying from Bilbao to San Diego in September is currently the most expensive (average of $1,242). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
Julian
National City

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