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$433+ 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 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
Feb 26 — Mar 51
Thu 2/26
Thu 3/5
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 January 27, 2026.

This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:50 pm
BIO
-
SAN
3 stops33h 57m
United Airlines
Sun 3/156:35 pm
SAN
-
BIO
1 stop19h 20m
United Airlines
Deal found 1/26$633
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/2512:50 pm
BIO
-
SAN
3 stops33h 57m
United Airlines
Tue 3/178:30 am
SAN
-
BIO
2 stops18h 20m
United Airlines
Deal found 1/26$635
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/277:25 am
BIO
-
SAN
1 stop17h 20m
Lufthansa
Mon 3/164:00 pm
SAN
-
BIO
2 stops23h 05m
Lufthansa
Deal found 1/26$643
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/167:15 am
BIO
-
SAN
1 stop17h 10m
United Airlines
Mon 4/202:05 pm
SAN
-
BIO
2 stops23h 55m
United Airlines
Deal found 1/24$644
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:35 am
BIO
-
SAN
1 stop37h 10m
United Airlines
Sun 3/156:35 pm
SAN
-
BIO
1 stop15h 30m
United Airlines
Deal found 1/26$647
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:35 am
BIO
-
SAN
1 stop37h 10m
United Airlines
Tue 3/177:05 am
SAN
-
BIO
2 stops21h 00m
United Airlines
Deal found 1/26$652
This Lufthansa 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:50 pm
BIO
-
SAN
1 stop29h 55m
Lufthansa
Sun 3/156:35 pm
SAN
-
BIO
1 stop19h 20m
Lufthansa
Deal found 1/26$653
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/2411:35 am
BIO
-
SAN
1 stop37h 10m
United Airlines
Sat 3/147:00 am
SAN
-
BIO
2 stops21h 50m
United Airlines
Deal found 1/26$655

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 January 27, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$633
(United Airlines)

One-way from

$433
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$931
Provider with most accurate pricing for Bilbao-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Bilbao-San Diego flights.
Search Deals
From Bilbao to San Diego
Search Deals
One-way flight from Bilbao to San Diego
Search Deals
Highest demand for flights based on searches. 18% potential increase in price ($218 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($60 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 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 January 27, 2026.
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 2/25

12:50 pm-9:47 am

2 stops29h 57m

San Diego

Sun 3/15

6:35 pm-9:55 pm

1 stop19h 20m

$633

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 2/27

6:45 am-9:25 pm

2 stops23h 40m

San Diego

Thu 3/12

6:35 pm-9:55 pm

1 stop19h 20m

$633

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 2/27

6:45 am-12:29 am

2 stops26h 44m

San Diego

Tue 3/17

8:30 am-10:50 am

2 stops18h 20m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 2/28

6:45 am-12:29 am

2 stops26h 44m

San Diego

Tue 3/17

7:05 am-10:50 am

2 stops19h 45m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 2/25

12:50 pm-1:47 pm

3 stops33h 57m

San Diego

Sat 3/14

7:50 pm-11:20 pm

2 stops19h 30m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 2/26

6:45 am-8:51 pm

2 stops23h 06m

San Diego

Sun 3/15

7:55 am-6:05 pm

2 stops26h 10m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 2/27

6:45 am-10:44 pm

2 stops24h 59m

San Diego

Sun 3/15

9:54 am-6:05 pm

2 stops24h 11m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 2/28

6:45 am-8:49 pm

2 stops23h 04m

San Diego

Sun 3/15

11:57 am-9:55 pm

2 stops25h 58m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 2/25

12:50 pm-1:47 pm

3 stops33h 57m

San Diego

Tue 3/17

8:30 am-10:50 am

2 stops18h 20m

$635

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 2/27

6:45 am-11:40 pm

2 stops25h 55m

San Diego

Fri 3/13

11:57 am-11:20 pm

2 stops27h 23m

$635

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/26

Showing 1-10 of 16 results
1
2
  • 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

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

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 29h 57m. Fly via United Airlines to get the fastest option. Bilbao and San Diego are separated by a distance of 5742 mi.

  • 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.

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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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