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$695+ 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 8/3. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$718
(Finnair)

One-way from

$695
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$858
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. 23% potential increase in price ($292 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 June 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 June 12, 2025.

This Finnair deal was found by Cheapflights users on 6/10. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/26:45 amBIO - SAN
2 stops24h 09mMultiple Airlines
Sat 9/1312:38 pmSAN - BIO
2 stops25h 37mMultiple Airlines
Deal found 6/10$718
This Lufthansa deal was found by Cheapflights users on 6/10. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/22:10 pmBIO - SAN
2 stops19h 05mLufthansa
Sat 9/135:15 pmSAN - BIO
1 stop21h 10mLufthansa
Deal found 6/10$786
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 10/76:45 amBIO - SAN
2 stops20h 45mUnited Airlines
Sat 10/1810:46 amSAN - BIO
3 stops22h 34mUnited Airlines
Deal found 6/10$806
This Delta deal was found by Cheapflights users on 6/10. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 6/256:50 amBIO - SAN
2 stops23h 29mDelta
Wed 7/96:30 amSAN - BIO
2 stops19h 30mDelta
Deal found 6/10$976
This KLM deal was found by Cheapflights users on 6/10. 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.
Wed 6/255:15 pmBIO - SAN
1 stop27h 45mKLM
Wed 7/92:01 pmSAN - BIO
2 stops17h 29mKLM
Deal found 6/10$979
This Iberia deal was found by Cheapflights users on 6/10. 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.
Fri 7/186:45 amBIO - SAN
2 stops25h 42mIberia
Wed 12/1710:48 amSAN - BIO
2 stops25h 02mIberia
Deal found 6/10$1,906

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 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

Tue 9/2

6:45 am-9:54 pm

2 stops24h 09m

San Diego

Sat 9/13

12:38 pm-11:15 pm

2 stops25h 37m

$718

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Tue 9/2

2:10 pm-12:15 am

2 stops19h 05m

San Diego

Sat 9/13

5:15 pm-11:25 pm

1 stop21h 10m

$786

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Tue 10/7

6:45 am-6:30 pm

2 stops20h 45m

San Diego

Sat 10/18

10:46 am-6:20 pm

3 stops22h 34m

$806

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 6/25

6:50 am-9:19 pm

2 stops23h 29m

San Diego

Wed 7/9

6:30 am-11:00 am

2 stops19h 30m

$976

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Wed 6/25

5:15 pm-12:00 pm

1 stop27h 45m

San Diego

Wed 7/9

2:01 pm-4:30 pm

2 stops17h 29m

$979

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Fri 7/18

6:45 am-11:27 pm

2 stops25h 42m

San Diego

Wed 12/17

10:48 am-8:50 pm

2 stops25h 02m

$1,906

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sun 8/3

7:00 am-7:26 pm

3 stops45h 26m

$695

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 6/19

8:20 am-11:41 pm

2 stops24h 21m

$722

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Sun 8/3

6:10 pm-6:55 pm

2 stops33h 45m

$803

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

Thu 6/19

7:15 am-3:25 pm

1 stop17h 10m

$896

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/12

Showing 1-10 of 12 results
1
2

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.

Rainfall in San Diego by month

Plan your trip to San Diego by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

Plan your trip to San Diego by taking into account the average temperature totals by month.

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated June 12, 2025.
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,950 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,790 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Aer Lingus
7.1
Good
1,117 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Iberia
7.0
Good
2,776 reviews
Delta
8.0
Very good
7,950 reviews

Food

7.3

Boarding

8.2

Crew

8.5

Entertainment

7.9

Comfort

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

  • What are the cheapest airlines flying from Bilbao to San Diego round-trip?

    Currently priced at $786, Lufthansa will fly you from Bilbao to San Diego and back. In addition to Lufthansa, many other airlines offer competitively priced options for your trip. Search Cheapflights for deals from United Airlines and Delta - these airlines can fly you to your destination from $806 and $976, respectively. Users have found that Lufthansa is 17% cheaper than the other options available to this destination.

  • What are the cheapest airlines to fly from Bilbao to San Diego one-way?

    $722 is the cheapest one-way deal found within the past few days, from Air Europa. You may also be able to find cheap deals on Aer Lingus and Lufthansa, with prices starting from $803 and $896, respectively.

  • 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 Bilbao?

Book flights to Bilbao if you plan to visit one of these locations
El Cajon
Chula Vista
National City
Imperial Beach
La Mesa
Alpine
Lemon Grove
Poway
Santee
Coronado

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