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Bilbao

$346+ 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 4/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BIO
Feb 25 — Mar 41
Wed 2/25
Wed 3/4
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 January 26, 2026.

This Cheapflightsfares deal was found by Cheapflights users on 1/26. 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 3/45:35 pm
SAN
-
BIO
1 stop15h 30m
Lufthansa
Wed 3/117:25 am
BIO
-
SAN
1 stop17h 20m
Lufthansa
Deal found 1/26$458
This United Airlines deal was found by Cheapflights users on 1/26. 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 3/46:30 am
SAN
-
BIO
3 stops24h 40m
United Airlines
Wed 3/117:25 am
BIO
-
SAN
2 stops21h 20m
United Airlines
Deal found 1/26$490
This United Airlines deal was found by Cheapflights users on 1/26. 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.
Fri 5/15:15 pm
SAN
-
BIO
1 stop15h 40m
United Airlines
Wed 6/1012:30 pm
BIO
-
SAN
2 stops30h 41m
United Airlines
Deal found 1/26$651
This Finnair deal was found by Cheapflights users on 1/24. 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.
Wed 7/151:09 pm
SAN
-
BIO
2 stops25h 06m
Multiple Airlines
Thu 7/306:45 am
BIO
-
SAN
2 stops21h 35m
Multiple Airlines
Deal found 1/24$814
This United Airlines deal was found by Cheapflights users on 1/25. 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.
Sun 7/55:15 pm
SAN
-
BIO
1 stop15h 40m
United Airlines
Mon 8/37:15 am
BIO
-
SAN
1 stop17h 10m
United Airlines
Deal found 1/25$1,018

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 January 26, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

Expedia
3 stars

Round-trip from

$635
(Expedia)

One-way from

$346
(FlightHub)

Popular in

June

Cheapest in

November

Average price

$683
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. 20% potential increase in price ($262 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($70 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in January 2026
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 January 26, 2026.
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 3/4

5:35 pm-6:05 pm

1 stop15h 30m

Bilbao

Wed 3/11

7:25 am-4:45 pm

1 stop17h 20m

$458

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 3/4

6:30 am-4:10 pm

3 stops24h 40m

Bilbao

Wed 3/11

7:25 am-8:45 pm

2 stops21h 20m

$490

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Sat 1/31

9:00 pm-11:00 am

2 stops29h 00m

Bilbao

Tue 2/3

12:00 pm-7:50 pm

2 stops40h 50m

$1,294

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Sat 1/31

6:00 pm-4:40 pm

2 stops37h 40m

Bilbao

Tue 2/3

11:35 am-3:45 pm

1 stop37h 10m

$1,896

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Wed 3/4

6:20 am-12:50 pm

3 stops45h 30m

Bilbao

Wed 3/11

6:45 am-9:26 pm

3 stops46h 41m

$12,809

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Sat 4/18

9:15 pm-5:30 pm

2 stops35h 15m

$346

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Tue 6/16

1:15 pm-11:10 am

2 stops36h 55m

$369

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Mon 6/15

7:10 am-1:15 pm

2 stops21h 05m

$377

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Sun 6/7

7:10 am-5:00 pm

2 stops24h 50m

$377

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

Tue 6/16

7:10 am-5:10 pm

2 stops25h 00m

$377

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/25

Showing 1-10 of 15 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 January.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 starsTrust Score*3 stars
OvagoPrice Accuracy2 starsTrust Score*2 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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Bilbao flight deals on Cheapflights vs. FlightHub >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 Expedia the most. Expedia 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.

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 January 26, 2026.
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
9,200 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

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
9,200 reviews
United Airlines
7.4
Good
9,200 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

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
7,747 reviews
United Airlines
7.4
Good
9,200 reviews

Comfort

7.3

Food

6.6

Boarding

7.7

Crew

8.1

Overall

7.4

Entertainment

7.1

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 $458, Lufthansa can have you in Bilbao from San Diego in 15h 30m. 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 $629. These flights start at 41% 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 January 26, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$581Average$1,065FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$629Average$1,098FlexibilityNo cancel feeOn-time76%

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