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$877+ Cheap flights from Bilbao (BIO) to San Diego (SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
Jul 15 — Jul 221
Wed 7/15
Wed 7/22
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 June 15, 2026.

This Iberia deal was found by Cheapflights users on 6/13. 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.
Thu 10/11:30 pm
BIO
-
SAN
2 stops38h 21m
Iberia
Mon 10/53:10 pm
SAN
-
BIO
2 stops36h 35m
Iberia
Deal found 6/13$877
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Thu 10/16:50 am
BIO
-
SAN
2 stops24h 51m
United Airlines
Mon 10/55:15 pm
SAN
-
BIO
1 stop15h 40m
United Airlines
Deal found 6/11$916
This Delta deal was found by Cheapflights users on 6/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:45 am
BIO
-
SAN
2 stops20h 29m
Delta
Sun 7/196:15 am
SAN
-
BIO
2 stops18h 35m
Delta
Deal found 6/13$1,046
This KLM deal was found by Cheapflights users on 6/13. 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.
Wed 7/85:15 pm
BIO
-
SAN
1 stop27h 35m
Multiple Airlines
Sun 7/196:15 am
SAN
-
BIO
2 stops18h 35m
Multiple Airlines
Deal found 6/13$1,058
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Wed 7/82:10 pm
BIO
-
SAN
2 stops28h 49m
United Airlines
Sun 7/1910:25 pm
SAN
-
BIO
2 stops51h 20m
United Airlines
Deal found 6/11$1,086

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 June 15, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$877
(Iberia)

Popular in

September

Cheapest in

February

Average price

$1,039
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
Highest demand for flights based on searches. 5% potential increase in price ($60 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($27 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 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 June 15, 2026.
Use the filters below to find and compare flights from Bilbao to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 10/1

1:30 pm-11:55 pm

2 stops19h 25m

San Diego

Mon 10/5

3:10 pm-12:45 pm

2 stops36h 35m

$878

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 10/1

6:50 am-10:41 pm

2 stops24h 51m

San Diego

Mon 10/5

5:15 pm-5:55 pm

1 stop15h 40m

$916
Quickest round-trip

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 7/8

6:45 am-6:14 pm

2 stops20h 29m

San Diego

Sun 7/19

6:15 am-9:50 am

2 stops18h 35m

$1,046

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 7/8

2:10 pm-9:59 am

2 stops28h 49m

San Diego

Sun 7/19

10:25 pm-10:45 am

2 stops51h 20m

$1,086

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 7/8

5:15 pm-11:50 am

1 stop27h 35m

San Diego

Sun 7/19

6:15 am-9:50 am

2 stops18h 35m

$1,097

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 6/25

6:50 am-11:40 pm

2 stops25h 50m

San Diego

Mon 6/29

9:05 pm-10:45 am

1 stop28h 40m

$1,259
Cheapest one-way

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 7/31

5:50 pm-11:26 pm

2 stops38h 36m

$1,011

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 7/31

12:30 pm-11:40 pm

1 stop20h 10m

$1,112
Quickest one-way

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 7/31

7:15 am-3:25 pm

1 stop17h 10m

$1,547

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 7/31

7:10 am-11:42 pm

3 stops25h 32m

$2,875

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

Sorted by cheapest first
  • 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 $631). 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 19h 25m. Fly via 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, February is the cheapest month in which you can book a flight from Bilbao to San Diego (average of $631). 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
National City
Chula Vista
Poway
Coronado
La Mesa
Santee
Julian
Lemon Grove

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