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$672+ 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 8/17. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
ago 4 — ago 111
seg 8/4
seg 8/11
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 julho 30, 2025.

Round-trip from

$790
(lol.travel)

One-way from

$672
(Mytrip)

Popular in

July

Cheapest in

February

Average price

$1,591
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. 22% potential increase in price ($276 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julho 30, 2025.

This lol.travel deal was found by Cheapflights users on 7/30. 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.
sáb 9/136:45 amBIO - SAN
2 stops24h 17mUnited Airlines
sáb 9/2010:30 pmSAN - BIO
2 stops29h 55mUnited Airlines
Deal found 7/30$790
This Lufthansa deal was found by Cheapflights users on 7/30. 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.
sex 8/297:15 amBIO - SAN
1 stop17h 10mLufthansa
sex 9/55:15 pmSAN - BIO
1 stop21h 10mLufthansa
Deal found 7/30$833
This Mytrip deal was found by Cheapflights users on 7/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sex 8/2910:45 amBIO - SAN
3 stops40h 11mMultiple Airlines
sex 9/56:15 amSAN - BIO
3 stops31h 25mMultiple Airlines
Deal found 7/30$937
This Delta deal was found by Cheapflights users on 7/29. 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.
sáb 8/26:50 amBIO - SAN
2 stops24h 49mDelta
sáb 9/68:05 amSAN - BIO
2 stops17h 20mDelta
Deal found 7/29$1,151

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 julho 30, 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

sáb 9/13

6:45 am-10:02 pm

2 stops24h 17m

San Diego

sáb 9/20

10:30 pm-1:25 pm

2 stops29h 55m

$790

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

sex 8/29

7:15 am-3:25 pm

1 stop17h 10m

San Diego

sex 9/5

5:15 pm-11:25 pm

1 stop21h 10m

$833

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

sex 8/29

10:45 am-5:56 pm

3 stops40h 11m

San Diego

sex 9/5

6:15 am-10:40 pm

3 stops31h 25m

$937

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

dom 8/17

7:10 am-7:21 am

3 stops33h 11m

$672

BilbaoSan Diego

BIO - SAN

BIOSAN

Bilbao

dom 8/17

12:30 pm-7:11 pm

1 stop15h 41m

$1,466

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/29

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.

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 julho 30, 2025.
Read through reviews of airlines operating flights from Bilbao to San Diego, such as United Airlines and Lufthansa. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
United Airlines
7.4
Good
8,896 reviews
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.
Lufthansa
6.8
Okay
7,269 reviews
United Airlines
7.4
Good
8,896 reviews

Boarding

7.7

Crew

8.1

Comfort

7.3

Overall

7.4

Food

6.6

Entertainment

7.1

Reviews

1 / 20
4.0
Okay

Thomas,Apr 2025

TPE - SFO

The boarding experience was okay. The dietary food choices were limited, the midway snacks were hard and dry. The seat was uncomfortable - stiff seat cushion, seat back kept springing back to the upright position, narrow seat width. Love the app and the ability to track my luggage. Flight crew was efficient.

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 $790, United Airlines will fly you from Bilbao to San Diego and back. In addition to United Airlines, many other airlines offer competitively priced options for your trip. Check Cheapflights for deals on Lufthansa for as low as $833. Users have found that United Airlines is 19% cheaper than the other options available to this destination.

  • 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
Coronado
Poway
National City
Lemon Grove
Imperial Beach
La Mesa
Alpine

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