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Bilbao

$323+ Cheap flights from San Diego (SAN) to Bilbao (BIO)

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 11/7. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BIO
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheap flight deals from San Diego to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to Bilbao (BIO). 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 September 11, 2025.

Round-trip from

$560
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$1,194
From San Diego to Bilbao
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($263 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 September 2025
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Find flight deals from San Diego to Bilbao

Cheapest flights from San Diego to Bilbao
Explore the most affordable flight options available from San Diego to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 9/9. 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.
Wed 11/1911:02 amSAN - BIO
2 stops27h 03mLufthansa
Thu 11/276:45 amBIO - SAN
2 stops26h 28mLufthansa
Deal found 9/9$551
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/1911:02 amSAN - BIO
2 stops27h 03mUnited Airlines
Thu 11/2712:50 pmBIO - SAN
2 stops31h 48mUnited Airlines
Deal found 9/9$552
This United Airlines deal was found by Cheapflights users on 9/9. 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 11/265:35 pmSAN - BIO
1 stop20h 30mUnited Airlines
Fri 12/56:45 amBIO - SAN
2 stops35h 55mUnited Airlines
Deal found 9/9$557
This United deal was found by Cheapflights users on 9/9. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/197:00 amSAN - BIO
2 stops20h 05mMultiple Airlines
Thu 11/276:45 amBIO - SAN
3 stops46h 20mMultiple Airlines
Deal found 9/9$571
This Booking.com deal was found by Cheapflights users on 9/9. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/265:35 pmSAN - BIO
1 stop15h 30mLufthansa
Fri 12/57:25 amBIO - SAN
1 stop17h 20mLufthansa
Deal found 9/9$638
This United Airlines deal was found by Cheapflights users on 9/11. 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.
Sun 10/266:35 pmSAN - BIO
1 stop15h 30mUnited Airlines
Sun 11/25:45 amBIO - SAN
2 stops25h 59mUnited Airlines
Deal found 9/11$666

Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to Bilbao 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 September 11, 2025.
Use the filters below to find and compare flights from San Diego to Bilbao that are best for you.

Fly from

San Diego

Fly to

Bilbao

Route

Depart

Return

Price

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 11/19

11:02 am-11:05 pm

2 stops27h 03m

Bilbao

Thu 11/27

7:25 am-3:45 pm

1 stop17h 20m

$551

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 11/19

11:02 am-11:05 pm

2 stops27h 03m

Bilbao

Thu 11/27

12:50 pm-11:38 am

2 stops31h 48m

$552

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 11/26

5:35 pm-11:05 pm

1 stop20h 30m

Bilbao

Fri 12/5

6:45 am-9:40 am

2 stops35h 55m

$557

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 11/19

7:00 am-12:05 pm

2 stops20h 05m

Bilbao

Thu 11/27

6:45 am-8:05 pm

3 stops46h 20m

$571

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 11/26

5:35 pm-6:05 pm

1 stop15h 30m

Bilbao

Fri 12/5

7:25 am-3:45 pm

1 stop17h 20m

$638

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Sun 10/26

6:35 pm-6:05 pm

1 stop15h 30m

Bilbao

Sun 11/2

5:45 am-11:44 pm

2 stops25h 59m

$666

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Fri 11/7

6:55 am-8:20 am

3 stops40h 25m

$323

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Fri 11/7

5:35 pm-11:20 pm

1 stop20h 45m

$508

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Fri 11/7

5:35 pm-11:20 pm

1 stop20h 45m

$511

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Best time to book a flight from San Diego to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from San Diego 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 San Diego to Bilbao

What is the cheapest month to book a flight from San Diego to Bilbao?

Currently, January is the cheapest month in which you can book a flight from San Diego to Bilbao (average of $541). Flying from San Diego to Bilbao in June is currently the most expensive (average of $1,136). 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.

What is the cheapest time of day to fly from SAN to BIO?

Find hourly flight availability from San Diego to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 18% on flights from San Diego to Bilbao by exploring options for tickets at noon.

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. 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 Bilbao. Reviews last updated September 11, 2025.
Peruse reviews from past customers who have flown with United Airlines and Lufthansa from San Diego to Bilbao to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??
Lufthansa
6.8
Okay
7,409 reviews
United Airlines
7.4
Good
8,937 reviews

Entertainment

7.1

Food

6.6

Overall

7.4

Comfort

7.3

Boarding

7.7

Crew

8.1

Reviews

1 / 20
4.0
Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

Find useful and relevant information for your journey from San Diego to Bilbao. 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 San Diego to Bilbao?

    For as low as $551, Lufthansa can have you in Bilbao from San Diego in 27h 03m. The distance from San Diego to Bilbao is about 5742 mi.

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

    Our cheapest airline available from San Diego to Bilbao is United Airlines. Our recent data shows that you can find tickets from as low as $599 on this airline. An additional option worth looking into is Lufthansa, starting at $671. These flights start at 42% lower than the current average price 3 months from now.

  • Can I find deals for flights from San Diego to Bilbao that include hotel bookings?

    Yes. In addition to deals on San Diego to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Bilbao.

  • Can I find deals for business class flights from San Diego to Bilbao?

    Yes. Cheapflights offers flight deals from San Diego to Bilbao 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 San Diego to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from San Diego to Bilbao (average of $541). Flying from San Diego to Bilbao in June is currently the most expensive (average of $1,136). 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

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from San Diego to Bilbao

Discover the top 2 airlines that operate flights from San Diego to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$599Average$1,133FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$671Average$1,171FlexibilityNo cancel feeOn-time76%

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