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$402+ 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 12/6. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
oct. 11 — oct. 181
sáb. 10/11
sáb. 10/18
1 adult, Economy
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Cheap 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 septiembre 11, 2025.

Round-trip from

$735
(American Airlines)

One-way from

$402
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,242
From Bilbao to San Diego
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One-way flight from Bilbao to San Diego
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Highest demand for flights based on searches. 21% potential increase in price ($275 potential increase over avg. RT price).
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Cheapest flight prices on average. 6% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find 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 septiembre 11, 2025.

This American Airlines deal was found by Cheapflights users on 9/11. 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.
mar. 10/289:15 amBIO - SAN
2 stops20h 06mAmerican Airlines
mar. 11/116:15 amSAN - BIO
2 stops17h 15mAmerican Airlines
Deal found 9/11$735
This Iberia deal was found by Cheapflights users on 9/11. 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.
vie. 9/266:45 amBIO - SAN
2 stops22h 35mIberia
mar. 9/3012:38 pmSAN - BIO
2 stops19h 17mIberia
Deal found 9/11$741
This Iberia deal was found by Cheapflights users on 9/10. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/136:45 amBIO - SAN
2 stops23h 03mIberia
lun. 11/1710:47 amSAN - BIO
2 stops17h 03mIberia
Deal found 9/10$782
This lol.travel deal was found by Cheapflights users on 9/11. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/276:45 amBIO - SAN
2 stops26h 28mUnited Airlines
vie. 12/510:52 amSAN - BIO
2 stops27h 28mUnited Airlines
Deal found 9/11$783
This United Airlines deal was found by Cheapflights users on 9/11. 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.
mar. 10/286:45 amBIO - SAN
2 stops25h 28mUnited Airlines
mar. 11/115:35 pmSAN - BIO
1 stop20h 30mUnited Airlines
Deal found 9/11$787
This United Airlines deal was found by Cheapflights users on 9/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/276:45 amBIO - SAN
2 stops36h 46mUnited Airlines
mar. 12/22:16 pmSAN - BIO
2 stops23h 49mUnited Airlines
Deal found 9/10$789
This United Airlines deal was found by Cheapflights users on 9/9. 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.
jue. 11/136:45 amBIO - SAN
2 stops24h 44mUnited Airlines
lun. 11/179:54 amSAN - BIO
2 stops21h 46mUnited Airlines
Deal found 9/9$792
This Gotogate deal was found by Cheapflights users on 9/10. 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.
lun. 10/276:50 pmBIO - SAN
1 stop29h 55mLufthansa
mar. 12/25:35 pmSAN - BIO
1 stop20h 30mLufthansa
Deal found 9/10$794

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 septiembre 11, 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

mar. 10/28

9:15 am-9:21 pm

2 stops20h 06m

San Diego

mar. 11/11

6:15 am-8:30 am

2 stops17h 15m

$735

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

vie. 9/26

6:45 am-8:20 pm

2 stops22h 35m

San Diego

mar. 9/30

12:38 pm-4:55 pm

2 stops19h 17m

$741

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

jue. 11/13

6:45 am-8:48 pm

2 stops23h 03m

San Diego

lun. 11/17

10:47 am-12:50 pm

2 stops17h 03m

$782

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

jue. 11/27

6:45 am-12:13 am

2 stops26h 28m

San Diego

vie. 12/5

10:52 am-11:20 pm

2 stops27h 28m

$783

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

jue. 11/27

7:25 am-3:45 pm

1 stop17h 20m

San Diego

vie. 12/5

5:35 pm-11:20 pm

1 stop20h 45m

$785

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

mar. 10/28

6:45 am-12:13 am

2 stops25h 28m

San Diego

mar. 11/11

5:35 pm-11:05 pm

1 stop20h 30m

$787

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

lun. 10/27

6:45 am-9:39 am

2 stops34h 54m

San Diego

mar. 12/2

5:35 pm-11:05 pm

1 stop20h 30m

$789

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

jue. 11/13

6:45 am-10:29 pm

2 stops24h 44m

San Diego

lun. 11/17

9:54 am-4:40 pm

2 stops21h 46m

$792

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

mar. 10/28

7:25 am-4:45 pm

1 stop17h 20m

San Diego

mar. 11/11

5:35 pm-11:05 pm

1 stop20h 30m

$794

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

sáb. 12/6

11:10 am-11:43 am

3 stops57h 33m

$402

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 17 results
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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, August is the cheapest month in which you can book a flight from Bilbao to San Diego (average of $286). Flying from Bilbao to San Diego in March is currently the most expensive (average of $366). 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 20h 06m. Fly via American Airlines, Iberia, 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, August is the cheapest month in which you can book a flight from Bilbao to San Diego (average of $286). Flying from Bilbao to San Diego in March is currently the most expensive (average of $366). 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
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City
Alpine

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