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$482+ 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 9/20. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
Aug 25 — Sep 11
Tue 8/25
Tue 9/1
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 July 26, 2026.

This KLM deal was found by Cheapflights users on 7/22. 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 9/56:45 am
BIO
-
SAN
1 stop14h 05m
Multiple Airlines
Sat 9/128:00 am
SAN
-
BIO
2 stops16h 50m
Multiple Airlines
Deal found 7/22$875
This Delta deal was found by Cheapflights users on 7/22. 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.
Sat 9/512:00 pm
BIO
-
SAN
2 stops17h 48m
Delta
Sat 9/128:00 am
SAN
-
BIO
2 stops16h 50m
Delta
Deal found 7/22$880
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/87:15 am
BIO
-
SAN
1 stop17h 10m
Lufthansa
Tue 9/155:15 pm
SAN
-
BIO
1 stop21h 10m
Lufthansa
Deal found 7/25$885
This Air France deal was found by Cheapflights users on 7/21. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/147:10 am
BIO
-
SAN
2 stops17h 56m
Air France
Wed 11/257:00 am
SAN
-
BIO
2 stops19h 30m
Air France
Deal found 7/21$887
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/177:15 am
BIO
-
SAN
1 stop17h 10m
Lufthansa
Sat 10/316:35 pm
SAN
-
BIO
1 stop15h 30m
Lufthansa
Deal found 7/25$905
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/86:50 am
BIO
-
SAN
2 stops22h 39m
United Airlines
Tue 9/158:00 am
SAN
-
BIO
2 stops17h 45m
United Airlines
Deal found 7/25$906
This Air Canada deal was found by Cheapflights users on 7/21. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/136:45 am
BIO
-
SAN
2 stops39h 19m
Air Canada
Tue 11/247:05 am
SAN
-
BIO
2 stops24h 55m
Air Canada
Deal found 7/21$909
This Gotogate deal was found by Cheapflights users on 7/21. 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 11/146:45 am
BIO
-
SAN
2 stops38h 15m
Multiple Airlines
Wed 11/255:35 pm
SAN
-
BIO
1 stop15h 30m
Multiple Airlines
Deal found 7/21$911
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sat 11/146:45 am
BIO
-
SAN
3 stops22h 52m
United Airlines
Wed 11/251:25 pm
SAN
-
BIO
2 stops19h 40m
United Airlines
Deal found 7/21$913
This United Airlines deal was found by Cheapflights users on 7/21. 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.
Sun 11/156:45 am
BIO
-
SAN
2 stops19h 32m
United Airlines
Tue 11/247:00 am
SAN
-
BIO
2 stops25h 00m
United Airlines
Deal found 7/21$914

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 July 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$860
(United Airlines)

One-way from

$482
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$1,373
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 ($223 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($36 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in July 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 July 26, 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

Wed 1/20

7:25 am-10:28 pm

2 stops24h 03m

San Diego

Sun 1/24

11:20 am-5:00 pm

2 stops20h 40m

$869
Quickest round-trip

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 9/5

6:45 am-11:50 am

1 stop14h 05m

San Diego

Sat 9/12

8:00 am-9:50 am

2 stops16h 50m

$875

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 9/5

12:00 pm-8:48 pm

2 stops17h 48m

San Diego

Sat 9/12

8:00 am-9:50 am

2 stops16h 50m

$880

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 10/17

10:30 am-10:51 pm

2 stops21h 21m

San Diego

Sat 10/31

1:05 pm-5:25 pm

2 stops20h 20m

$919

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 11/14

6:50 am-12:10 pm

1 stop14h 20m

San Diego

Tue 11/24

2:05 pm-4:30 pm

1 stop17h 25m

$938

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 11/14

6:50 am-12:10 pm

1 stop14h 20m

San Diego

Thu 11/26

2:05 pm-4:30 pm

1 stop17h 25m

$938

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sat 9/5

2:00 pm-6:30 pm

3 stops37h 30m

San Diego

Sat 9/12

3:56 pm-8:20 pm

2 stops43h 24m

$949

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 11/13

12:15 pm-10:55 pm

2 stops19h 40m

San Diego

Wed 11/25

1:05 pm-4:30 pm

2 stops18h 25m

$949

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 11/13

12:15 pm-10:55 pm

2 stops19h 40m

San Diego

Thu 11/26

2:05 pm-4:30 pm

1 stop17h 25m

$949

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sun 11/15

6:45 am-5:17 pm

2 stops19h 32m

San Diego

Tue 11/24

5:35 pm-11:05 pm

1 stop20h 30m

$970

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/25

Showing 1-10 of 16 resultsSorted by cheapest first
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

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 $632). Flying from Bilbao to San Diego in July is currently the most expensive (average of $1,373). 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.

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

Airfare is below average for this route at the moment.

Bilbao to San Diego flights typically cost between $1,103 and $1,358 in January.
The cheapest round-trip price found within the last 5 days was $860 on United Airlines (Jan 20-Jan 24).

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 48m. Fly via United Airlines or Delta 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 $632). Flying from Bilbao to San Diego in July is currently the most expensive (average of $1,373). 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
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove

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