$837+ Cheap flights from Bilbao (BIO) to San Diego (SAN)
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 10/24. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SAN
Oct 10 — Oct 171
Round-trip
1 adult, Economy
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Find cheap flights from Bilbao to San Diego with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from Bilbao to San Diego
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Best
Last-minute
Cheapest flights from Bilbao to San DiegoExplore 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 September 10, 2026.
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 September 10, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop14h 05m
Sat 1/1611:05 am -
2 stops21h 20m
Deal found 9/9![Delta logo]()
$837
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop14h 05m
Sat 1/162:05 pm -
1 stop17h 25m
Deal found 9/9![KLM logo]()
$842
This Delta deal was found by Cheapflights users on 9/7. 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.
Thu 9/246:45 am -
1 stop14h 05m
Mon 9/286:20 am -
2 stops18h 30m
Deal found 9/7![Delta logo]()
$865
This Delta deal was found by Cheapflights users on 9/7. 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.
Wed 9/2312:00 pm -
2 stops19h 33m
Sun 9/271:38 pm -
2 stops18h 52m
Deal found 9/7![Delta logo]()
$871
This Delta deal was found by Cheapflights users on 9/5. 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.
Mon 10/56:45 am -
2 stops25h 02m
Wed 10/2110:57 am -
2 stops20h 33m
Deal found 9/5![Delta logo]()
$876
This Delta deal was found by Cheapflights users on 9/7. 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.
Tue 9/157:10 am -
2 stops17h 46m
Thu 9/241:38 pm -
2 stops18h 52m
Deal found 9/7![Delta logo]()
$877
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/266:10 pm -
2 stops37h 47m
Sat 1/91:05 pm -
2 stops37h 25m
Deal found 9/8![Air France logo]()
$884
This Trip.com deal was found by Cheapflights users on 9/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:15 pm -
1 stop27h 35m
Sun 9/271:38 pm -
2 stops17h 52m
Deal found 9/7![KLM logo]()
$920
This Trip.com deal was found by Cheapflights users on 9/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:15 pm -
1 stop27h 35m
Wed 10/213:30 pm -
2 stops16h 00m
Deal found 9/5![KLM logo]()
$921
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.
Sat 10/246:50 am -
3 stops22h 55m
Sat 1/162:26 pm -
2 stops18h 19m
Deal found 9/9![United Airlines logo]()
$939
Best flights from Bilbao to San DiegoDiscover carefully curated flight deals from Bilbao to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
Discover carefully curated flight deals from Bilbao to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 10, 2026.
This Iberia 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/126:45 am -
2 stops24h 05m
Tue 2/167:15 am -
2 stops16h 15m
Deal found 9/9![Iberia logo]()
$866
This Delta deal was found by Cheapflights users on 9/5. 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.
Mon 10/56:45 am -
2 stops25h 02m
Wed 10/2110:57 am -
2 stops20h 33m
Deal found 9/5![Delta logo]()
$876
This Air France deal was found by Cheapflights users on 9/8. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/266:50 am -
1 stop14h 20m
Sat 1/91:05 pm -
2 stops19h 20m
Deal found 9/8![Multiple Airlines logo]()
$876
This United Airlines deal was found by Cheapflights users on 9/6. 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 2/126:45 am -
2 stops26h 44m
Tue 2/167:00 am -
2 stops29h 55m
Deal found 9/6![United Airlines logo]()
$880
This Expedia deal was found by Cheapflights users on 9/8. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/266:10 pm -
2 stops37h 47m
Sat 1/91:05 pm -
2 stops37h 25m
Deal found 9/8![Air France logo]()
$884
This Trip.com deal was found by Cheapflights users on 9/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:15 pm -
1 stop27h 35m
Sun 9/271:38 pm -
2 stops17h 52m
Deal found 9/7![KLM logo]()
$920
This SWISS deal was found by Cheapflights users on 9/7. 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 SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/2311:55 am -
3 stops39h 45m
Sun 9/276:40 am -
2 stops17h 45m
Deal found 9/7![SWISS logo]()
$1,013
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/256:45 am -
2 stops22h 43m
Tue 9/291:40 pm -
1 stop17h 50m
Deal found 9/9![Delta logo]()
$877
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.
Sat 10/246:50 am -
3 stops22h 55m
Sat 1/165:35 pm -
1 stop15h 10m
Deal found 9/9![United Airlines logo]()
$939
Last-minute flights from Bilbao to San DiegoDiscover last-minute flight deals from Bilbao to San Diego. Data last updated September 10, 2026 and is based on user searches.
Discover last-minute flight deals from Bilbao to San Diego. Data last updated September 10, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/7. 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.
Tue 9/157:10 am -
2 stops17h 46m
Thu 9/241:38 pm -
2 stops18h 52m
Deal found 9/7![Delta logo]()
$877
This Delta deal was found by Cheapflights users on 9/7. 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.
Wed 9/2312:00 pm -
2 stops19h 33m
Sun 9/271:38 pm -
2 stops18h 52m
Deal found 9/7![Delta logo]()
$871
This Trip.com deal was found by Cheapflights users on 9/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/235:15 pm -
1 stop27h 35m
Sun 9/271:38 pm -
2 stops17h 52m
Deal found 9/7![KLM logo]()
$920
This Delta deal was found by Cheapflights users on 9/7. 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.
Thu 9/246:45 am -
1 stop14h 05m
Mon 9/286:20 am -
2 stops18h 30m
Deal found 9/7![Delta logo]()
$865
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2512:00 pm -
1 stop32h 50m
Tue 9/291:40 pm -
1 stop36h 35m
Deal found 9/9![Delta logo]()
$964
This Delta deal was found by Cheapflights users on 9/5. 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.
Mon 10/56:45 am -
2 stops25h 02m
Wed 10/2110:57 am -
2 stops20h 33m
Deal found 9/5![Delta logo]()
$876
This Trip.com deal was found by Cheapflights users on 9/5. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:15 pm -
1 stop27h 35m
Wed 10/213:30 pm -
2 stops16h 00m
Deal found 9/5![KLM logo]()
$921
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop14h 05m
Sat 1/1611:05 am -
2 stops21h 20m
Deal found 9/9![Delta logo]()
$837
This KLM 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:45 am -
1 stop14h 05m
Sat 1/162:05 pm -
1 stop17h 25m
Deal found 9/9![KLM logo]()
$842
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.
Sat 10/246:50 am -
3 stops22h 55m
Sat 1/162:26 pm -
2 stops18h 19m
Deal found 9/9![United Airlines logo]()
$939
Find 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 September 10, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $837 (Delta) |
Popular in | July |
Cheapest in | February |
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 7,457,451 searches. Data last updated September 10, 2026.
Use the filters below to find and compare flights from Bilbao to San Diego that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Fri 2/12
6:45 am-9:50 pm
2 stops24h 05m
San Diego
Tue 2/16
7:15 am-8:30 am
2 stops16h 15m
$866
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Mon 10/5
6:45 am-10:47 pm
2 stops25h 02m
San Diego
Wed 10/21
10:57 am-4:30 pm
2 stops20h 33m
$876
Quickest round-trip
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Sat 12/26
6:50 am-12:10 pm
1 stop14h 20m
San Diego
Sat 1/9
1:05 pm-5:25 pm
2 stops19h 20m
$876
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Fri 9/25
6:45 am-8:28 pm
2 stops22h 43m
San Diego
Tue 9/29
1:40 pm-4:30 pm
1 stop17h 50m
$877
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Fri 2/12
6:45 am-12:29 am
2 stops26h 44m
San Diego
Tue 2/16
7:00 am-9:55 pm
2 stops29h 55m
$880
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Sat 12/26
6:10 pm-10:57 pm
2 stops37h 47m
San Diego
Sat 1/9
1:05 pm-11:30 am
2 stops37h 25m
$884
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Wed 9/23
5:15 pm-11:50 am
1 stop27h 35m
San Diego
Sun 9/27
1:38 pm-4:30 pm
2 stops17h 52m
$920
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Sat 10/24
6:50 am-8:45 pm
3 stops22h 55m
San Diego
Sat 1/16
5:35 pm-5:45 pm
1 stop15h 10m
$939
BilbaoSan Diego
BIO Bilbao - SAN San Diego
BIOSAN
Bilbao
Wed 9/23
11:55 am-6:40 pm
3 stops39h 45m
San Diego
Sun 9/27
6:40 am-9:25 am
2 stops17h 45m
$1,013
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Bilbao-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-San Diego flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Bilbao-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub 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 Bilbao-San Diego 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 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.
BIO-SAN
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.
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
National City
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Coronado
Poway
San Ysidro
La Mesa
Santee
Julian
Lemon Grove
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