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Bilbao

$521+ Cheap flights from San Diego (SAN) to Bilbao (BIO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 11/27. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — BIO
nov. 27 — dic. 41
jue. 11/27
jue. 12/4
1 adult, Economy
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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 octubre 28, 2025.

This United Airlines deal was found by Cheapflights users on 10/26. 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.
jue. 11/2711:02 amSAN - BIO
2 stops22h 03mUnited Airlines
mié. 12/37:25 amBIO - SAN
1 stop17h 20mUnited Airlines
Deal found 10/26$521
This lastminute.com deal was found by Cheapflights users on 10/26. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2711:02 amSAN - BIO
2 stops22h 03mLufthansa
mié. 12/31:35 pmBIO - SAN
2 stops39h 17mLufthansa
Deal found 10/26$542
This Finnair deal was found by Cheapflights users on 10/27. 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.
jue. 12/116:30 amSAN - BIO
2 stops31h 45mMultiple Airlines
jue. 12/186:45 amBIO - SAN
2 stops24h 00mMultiple Airlines
Deal found 10/27$563
This United Airlines deal was found by Cheapflights users on 10/27. 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.
jue. 12/115:35 pmSAN - BIO
1 stop15h 30mUnited Airlines
jue. 12/1812:50 pmBIO - SAN
2 stops35h 55mUnited Airlines
Deal found 10/27$642
This United Airlines deal was found by Cheapflights users on 10/27. 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.
mié. 11/197:00 amSAN - BIO
2 stops20h 05mUnited Airlines
jue. 11/276:45 amBIO - SAN
2 stops26h 28mUnited Airlines
Deal found 10/27$751
This Booking.com deal was found by Cheapflights users on 10/27. 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.
jue. 12/115:35 pmSAN - BIO
1 stop19h 20mLufthansa
jue. 12/187:40 amBIO - SAN
1 stop17h 05mLufthansa
Deal found 10/27$789
This Air Canada deal was found by Cheapflights users on 10/26. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/2712:40 pmSAN - BIO
3 stops38h 20mAir Canada
mié. 12/37:25 amBIO - SAN
2 stops37h 28mAir Canada
Deal found 10/26$848
This Mytrip deal was found by Cheapflights users on 10/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/275:35 pmSAN - BIO
3 stops34h 20mMultiple Airlines
mié. 12/39:05 pmBIO - SAN
2 stops27h 40mMultiple Airlines
Deal found 10/26$924
This Cheapflightsfares deal was found by Cheapflights users on 10/28. 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.
mié. 11/192:16 pmSAN - BIO
2 stops22h 39mLufthansa
jue. 11/277:40 amBIO - SAN
1 stop17h 05mLufthansa
Deal found 10/28$996

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 octubre 28, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$521
(United Airlines)

Popular in

June

Cheapest in

November

Average price

$701
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
Highest demand for flights based on searches. 19% potential increase in price ($245 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($57 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 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 octubre 28, 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

jue. 11/27

11:02 am-6:05 pm

2 stops22h 03m

Bilbao

mié. 12/3

7:25 am-3:45 pm

1 stop17h 20m

$521

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

jue. 11/27

11:02 am-6:05 pm

2 stops22h 03m

Bilbao

mié. 12/3

1:35 pm-7:52 pm

2 stops39h 17m

$542

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

jue. 12/11

6:30 am-11:15 pm

2 stops31h 45m

Bilbao

jue. 12/18

6:45 am-9:45 pm

2 stops24h 00m

$563

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

jue. 12/11

5:35 pm-6:05 pm

1 stop15h 30m

Bilbao

jue. 12/18

12:50 pm-3:45 pm

2 stops35h 55m

$642

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

mié. 11/19

7:00 am-12:05 pm

2 stops20h 05m

Bilbao

jue. 11/27

6:45 am-12:13 am

2 stops26h 28m

$751

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

jue. 11/27

12:40 pm-12:00 pm

3 stops38h 20m

Bilbao

mié. 12/3

7:25 am-11:53 am

2 stops37h 28m

$848

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

jue. 11/27

5:35 pm-12:55 pm

3 stops34h 20m

Bilbao

mié. 12/3

9:05 pm-3:45 pm

2 stops27h 40m

$924

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

mié. 11/19

2:16 pm-9:55 pm

2 stops22h 39m

Bilbao

jue. 11/27

7:40 am-3:45 pm

1 stop17h 05m

$996

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

mié. 1/7

4:00 pm-2:35 pm

3 stops37h 35m

$656

San DiegoBilbao

SAN - BIO

SANBIO

San Diego

mié. 1/7

5:35 pm-6:05 pm

1 stop15h 30m

$728

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/26

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 October.
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 month to book a flight from San Diego to Bilbao?

Currently, November is the cheapest month in which you can book a flight from San Diego to Bilbao (average of $589). Flying from San Diego to Bilbao in June is currently the most expensive (average of $1,335). 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 octubre 28, 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 octubre 28, 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
9,001 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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
9,001 reviews
United Airlines
7.4
Good
9,001 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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
7,535 reviews
United Airlines
7.4
Good
9,001 reviews

Overall

7.4

Comfort

7.3

Entertainment

7.1

Food

6.6

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 $521, United Airlines can have you in Bilbao from San Diego in 22h 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 $581 on this airline. An additional option worth looking into is Lufthansa, starting at $635. These flights start at 43% 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, November is the cheapest month in which you can book a flight from San Diego to Bilbao (average of $589). Flying from San Diego to Bilbao in June is currently the most expensive (average of $1,335). 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 octubre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$581Average$1,133FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$635Average$1,332FlexibilityNo cancel feeOn-time76%

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