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Bilbao

$309+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BIO
ene. 11 — ene. 181
dom. 1/11
dom. 1/18
1 adult, Economy
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Cheap 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 diciembre 12, 2025.

This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/256:30 amSAN - BIO
2 stops20h 00mDelta
lun. 1/1212:15 pmBIO - SAN
2 stops37h 25mDelta
Deal found 12/10$704
This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/256:30 amSAN - BIO
2 stops20h 00mDelta
mar. 1/136:50 amBIO - SAN
2 stops22h 53mDelta
Deal found 12/10$820
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/255:35 pmSAN - BIO
1 stop20h 30mLufthansa
mar. 1/1311:35 amBIO - SAN
1 stop37h 10mLufthansa
Deal found 12/10$988
This FlightHub deal was found by Cheapflights users on 12/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/255:35 pmSAN - BIO
1 stop20h 30mMultiple Airlines
lun. 1/128:00 amBIO - SAN
2 stops21h 49mMultiple Airlines
Deal found 12/10$1,073
This KAYAK deal was found by Cheapflights users on 12/10. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/255:35 pmSAN - BIO
1 stop20h 30mLufthansa
lun. 1/125:35 pmBIO - SAN
2 stops34h 09mLufthansa
Deal found 12/10$1,106
This Kiwi.com deal was found by Cheapflights users on 12/10. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/255:35 pmSAN - BIO
1 stop20h 30mLufthansa
dom. 1/116:45 amBIO - SAN
2 stops48h 48mLufthansa
Deal found 12/10$1,124
This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/256:30 amSAN - BIO
2 stops20h 00mDelta
vie. 1/96:50 amBIO - SAN
2 stops23h 01mDelta
Deal found 12/10$1,130
This Gotogate deal was found by Cheapflights users on 12/10. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/259:23 amSAN - BIO
2 stops18h 27mMultiple Airlines
dom. 1/119:35 pmBIO - SAN
2 stops34h 23mMultiple Airlines
Deal found 12/10$1,132
This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/256:30 amSAN - BIO
2 stops20h 00mDelta
dom. 1/1112:45 pmBIO - SAN
2 stops40h 40mDelta
Deal found 12/10$1,136
This Ovago deal was found by Cheapflights users on 12/10. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/259:23 amSAN - BIO
2 stops18h 27mIberia
sáb. 1/105:35 pmBIO - SAN
2 stops23h 57mIberia
Deal found 12/10$1,168
This Delta deal was found by Cheapflights users on 12/10. 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.
jue. 12/256:30 amSAN - BIO
2 stops20h 00mDelta
sáb. 1/106:50 amBIO - SAN
2 stops18h 50mDelta
Deal found 12/10$1,200

Find 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 diciembre 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$439
(Kiwi.com)

One-way from

$309
(Kiwi.com)

Popular in

June

Cheapest in

November

Average price

$648
Provider with most accurate pricing for San Diego-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for San Diego-Bilbao flights.
Search Deals
From San Diego to Bilbao
Search Deals
One-way flight from San Diego to Bilbao
Search Deals
Highest demand for flights based on searches. 23% potential increase in price ($291 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($68 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals

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 diciembre 12, 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

sáb. 1/24

10:52 am-12:50 pm

2 stops16h 58m

Bilbao

sáb. 1/31

11:35 am-3:45 pm

1 stop37h 10m

$439

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

mar. 1/20

7:00 am-9:55 pm

2 stops29h 55m

Bilbao

jue. 1/29

11:35 am-12:15 am

2 stops21h 40m

$469

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

vie. 1/16

5:35 pm-11:20 pm

1 stop20h 45m

Bilbao

mar. 1/20

11:35 am-3:45 pm

1 stop37h 10m

$484

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

sáb. 1/24

2:20 pm-5:20 pm

2 stops18h 00m

Bilbao

sáb. 1/31

6:50 am-4:30 pm

2 stops18h 40m

$485

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

mar. 1/20

12:40 pm-12:05 pm

3 stops38h 25m

Bilbao

jue. 1/29

12:50 pm-11:53 am

2 stops32h 03m

$600

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

dom. 1/18

9:16 am-10:55 pm

3 stops52h 39m

$309

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

sáb. 1/10

6:00 pm-11:20 pm

2 stops20h 20m

$394

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

dom. 1/18

5:35 pm-6:05 pm

1 stop15h 30m

$402

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

dom. 6/7

11:08 am-5:30 pm

2 stops21h 22m

$674

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

dom. 6/7

7:40 pm-5:30 pm

2 stops36h 50m

$680

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Showing 1-10 of 11 results
1
2

Compare providers for flights from San Diego to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to Bilbao in December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Bilbao flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on San Diego-Bilbao flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from San Diego-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Bilbao flights, Cheapflights users trust eDreams the most. eDreams 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 San Diego-Bilbao 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 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 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 diciembre 12, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 52% 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 diciembre 12, 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
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
9,095 reviews
United Airlines
7.4
Good
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

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
7,626 reviews
United Airlines
7.4
Good
9,095 reviews

Food

6.6

Comfort

7.3

Crew

8.1

Entertainment

7.1

Boarding

7.7

Overall

7.4

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 $485, Lufthansa can have you in Bilbao from San Diego in 18h. The distance from San Diego to Bilbao is about 5742 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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 $581 on this airline. An additional option worth looking into is Lufthansa, starting at $635. These flights start at 39% 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.

See more FAQs

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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 diciembre 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$581Average$1,065FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$635Average$1,098FlexibilityNo cancel feeOn-time76%

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