$388+ Cheap flights from Bilbao (BIO) to San Francisco (SFO)
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 10/21. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SFO
Jul 31 — Aug 71
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
Find cheap flights from Bilbao to San Francisco 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 Francisco
Cheapest
Best
Last-minute
One-way
Cheapest flights from Bilbao to San FranciscoExplore the most affordable flight options available from Bilbao to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.
Explore the most affordable flight options available from Bilbao to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 1, 2026.
This Orbitz deal was found by Cheapflights users on 6/30. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:15 am
BIO
- SFO
2 stops19h 59m
Iberia
Mon 9/74:35 pm
SFO
- BIO
2 stops21h 20m
Iberia
Deal found 6/30![Iberia logo]()
$431
This American Airlines deal was found by Cheapflights users on 6/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:30 pm
BIO
- SFO
2 stops18h 58m
American Airlines
Wed 9/306:00 am
SFO
- BIO
2 stops17h 30m
American Airlines
Deal found 6/27![American Airlines logo]()
$532
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/109:15 am
BIO
- SFO
2 stops20h 15m
Iberia
Thu 9/245:55 pm
SFO
- BIO
1 stop29h 35m
Iberia
Deal found 6/27![Iberia logo]()
$563
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:45 am
BIO
- SFO
2 stops22h 01m
Iberia
Mon 9/287:00 am
SFO
- BIO
2 stops24h 55m
Iberia
Deal found 6/27![Iberia logo]()
$567
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/99:15 am
BIO
- SFO
2 stops21h 37m
Iberia
Tue 9/222:58 pm
SFO
- BIO
2 stops20h 52m
Iberia
Deal found 6/27![Iberia logo]()
$575
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/159:35 pm
BIO
- SFO
2 stops31h 29m
Iberia
Tue 9/291:27 pm
SFO
- BIO
2 stops18h 28m
Iberia
Deal found 6/27![Iberia logo]()
$577
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/199:15 am
BIO
- SFO
2 stops23h 44m
Iberia
Wed 9/3012:30 pm
SFO
- BIO
2 stops25h 45m
Iberia
Deal found 6/27![Iberia logo]()
$584
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/161:30 pm
BIO
- SFO
2 stops18h 58m
Iberia
Thu 10/17:30 pm
SFO
- BIO
2 stops34h 50m
Iberia
Deal found 6/27![Iberia logo]()
$585
This oojo deal was found by Cheapflights users on 6/30. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/29:35 pm
BIO
- SFO
1 stop27h 45m
Multiple Airlines
Mon 9/75:35 pm
SFO
- BIO
1 stop14h 50m
Multiple Airlines
Deal found 6/30![Multiple Airlines logo]()
$587
This Iberia deal was found by Cheapflights users on 6/27. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/141:30 pm
BIO
- SFO
2 stops20h 29m
Iberia
Mon 9/287:00 am
SFO
- BIO
2 stops24h 55m
Iberia
Deal found 6/27![Iberia logo]()
$589
Best flights from Bilbao to San FranciscoDiscover carefully curated flight deals from Bilbao to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2026.
Discover carefully curated flight deals from Bilbao to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 1, 2026.
This KLM deal was found by Cheapflights users on 6/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:45 am
BIO
- SFO
1 stop14h 00m
KLM
Tue 9/293:05 pm
SFO
- BIO
1 stop17h 25m
KLM
Deal found 6/27![KLM logo]()
$674
This Delta deal was found by Cheapflights users on 6/26. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:50 am
BIO
- SFO
2 stops21h 47m
Delta
Sat 1/92:20 pm
SFO
- BIO
2 stops18h 05m
Delta
Deal found 6/26![Delta logo]()
$701
This United Airlines deal was found by Cheapflights users on 6/27. 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.
Tue 9/156:50 am
BIO
- SFO
1 stop17h 30m
United Airlines
Sun 9/279:05 pm
SFO
- BIO
1 stop17h 20m
United Airlines
Deal found 6/27![United Airlines logo]()
$706
This KLM deal was found by Cheapflights users on 6/26. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/256:50 am
BIO
- SFO
1 stop13h 55m
Multiple Airlines
Sat 1/92:20 pm
SFO
- BIO
2 stops18h 05m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$719
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Tue 8/252:05 pm
BIO
- SFO
1 stop31h 35m
United Airlines
Wed 9/92:20 pm
SFO
- BIO
2 stops24h 05m
United Airlines
Deal found 6/26![United Airlines logo]()
$747
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/236:45 am
BIO
- SFO
1 stop14h 00m
Delta
Mon 9/77:00 am
SFO
- BIO
2 stops17h 50m
Delta
Deal found 6/28![Delta logo]()
$867
This KLM deal was found by Cheapflights users on 6/29. 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.
Wed 12/235:20 pm
BIO
- SFO
1 stop27h 25m
Multiple Airlines
Fri 1/82:20 pm
SFO
- BIO
2 stops18h 05m
Multiple Airlines
Deal found 6/29![Multiple Airlines logo]()
$872
This Delta deal was found by Cheapflights users on 6/29. 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 8/216:45 am
BIO
- SFO
1 stop14h 00m
Delta
Sun 8/3010:45 am
SFO
- BIO
2 stops21h 45m
Delta
Deal found 6/29![Delta logo]()
$867
This KLM deal was found by Cheapflights users on 6/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:20 pm
BIO
- SFO
1 stop27h 25m
Multiple Airlines
Thu 1/72:20 pm
SFO
- BIO
2 stops18h 05m
Multiple Airlines
Deal found 6/28![Multiple Airlines logo]()
$872
This Delta deal was found by Cheapflights users on 6/29. 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 8/2412:00 pm
BIO
- SFO
1 stop32h 45m
Delta
Sun 9/63:05 pm
SFO
- BIO
1 stop33h 45m
Delta
Deal found 6/29![Delta logo]()
$874
This Delta deal was found by Cheapflights users on 6/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1512:00 pm
BIO
- SFO
2 stops20h 59m
Delta
Fri 7/243:05 pm
SFO
- BIO
1 stop33h 45m
Delta
Deal found 6/27![Delta logo]()
$880
Last-minute flights from Bilbao to San FranciscoDiscover last-minute flight deals from Bilbao to San Francisco. Data last updated July 1, 2026 and is based on user searches.
Discover last-minute flight deals from Bilbao to San Francisco. Data last updated July 1, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 6/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:45 am
BIO
- SFO
1 stop14h 00m
Delta
Sun 7/1911:50 pm
SFO
- BIO
2 stops25h 00m
Delta
Deal found 6/27![Delta logo]()
$873
This Delta deal was found by Cheapflights users on 6/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:45 am
BIO
- SFO
1 stop14h 00m
Delta
Tue 7/213:05 pm
SFO
- BIO
1 stop33h 45m
Delta
Deal found 6/27![Delta logo]()
$875
This Delta deal was found by Cheapflights users on 6/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/146:45 am
BIO
- SFO
1 stop14h 00m
Delta
Mon 7/207:00 am
SFO
- BIO
2 stops24h 30m
Delta
Deal found 6/27![Delta logo]()
$878
This KLM deal was found by Cheapflights users on 6/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/1512:00 pm
BIO
- SFO
1 stop32h 45m
KLM
Wed 7/228:10 pm
SFO
- BIO
1 stop16h 50m
KLM
Deal found 6/27![KLM logo]()
$850
This KLM deal was found by Cheapflights users on 6/27. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/156:45 am
BIO
- SFO
2 stops17h 59m
KLM
Tue 7/213:05 pm
SFO
- BIO
1 stop21h 55m
KLM
Deal found 6/27![KLM logo]()
$856
This American Airlines deal was found by Cheapflights users on 6/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/169:15 am
BIO
- SFO
2 stops19h 50m
American Airlines
Wed 7/226:15 am
SFO
- BIO
2 stops17h 15m
American Airlines
Deal found 6/27![American Airlines logo]()
$727
This Air France deal was found by Cheapflights users on 6/27. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:10 am
BIO
- SFO
1 stop14h 40m
Air France
Wed 7/228:10 pm
SFO
- BIO
1 stop16h 50m
Air France
Deal found 6/27![Air France logo]()
$857
This Delta deal was found by Cheapflights users on 6/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/167:10 am
BIO
- SFO
1 stop14h 40m
Delta
Wed 7/226:00 am
SFO
- BIO
2 stops18h 50m
Delta
Deal found 6/27![Delta logo]()
$879
This Air France deal was found by Cheapflights users on 6/27. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/1710:30 am
BIO
- SFO
1 stop16h 30m
Air France
Wed 7/228:10 pm
SFO
- BIO
1 stop16h 50m
Air France
Deal found 6/27![Air France logo]()
$874
This Delta deal was found by Cheapflights users on 6/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/286:45 am
BIO
- SFO
2 stops18h 27m
Delta
Tue 8/117:00 am
SFO
- BIO
2 stops17h 50m
Delta
Deal found 6/28![Delta logo]()
$855
One-way flights from Bilbao to San FranciscoSearch for one-way flight options from Bilbao to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
Search for one-way flight options from Bilbao to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 1, 2026.
This British Airways deal was found by Cheapflights users on 6/26. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:30 pm
BIO
- SFO
2 stops20h 13m
British Airways
Deal found 6/26![British Airways logo]()
$388
This Expedia deal was found by Cheapflights users on 6/28. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/259:35 pm
BIO
- SFO
2 stops20h 50m
Iberia
Deal found 6/28![Iberia logo]()
$390
This FlightHub deal was found by Cheapflights users on 6/29. 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.
Thu 10/229:15 am
BIO
- SFO
2 stops21h 41m
British Airways
Deal found 6/29![British Airways logo]()
$411
This Iberia deal was found by Cheapflights users on 6/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/301:30 pm
BIO
- SFO
2 stops20h 24m
Iberia
Deal found 6/26![Iberia logo]()
$412
This Justfly.com deal was found by Cheapflights users on 6/30. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/79:35 pm
BIO
- SFO
2 stops35h 10m
British Airways
Deal found 6/30![British Airways logo]()
$422
This FlightHub deal was found by Cheapflights users on 6/26. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:15 am
BIO
- SFO
2 stops19h 33m
British Airways
Deal found 6/26![British Airways logo]()
$442
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/3110:25 pm
BIO
- SFO
3 stops49h 10m
Multiple Airlines
Deal found 6/26![Multiple Airlines logo]()
$443
This Priceline deal was found by Cheapflights users on 6/29. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/249:35 pm
BIO
- SFO
2 stops35h 24m
British Airways
Deal found 6/29![British Airways logo]()
$445
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:05 pm
BIO
- SFO
1 stop30h 45m
Aer Lingus
Deal found 6/26![Aer Lingus logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 6/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 8/306:10 pm
BIO
- SFO
1 stop30h 40m
Aer Lingus
Deal found 6/26![Aer Lingus logo]()
$456
Find flight deals from Bilbao to San Francisco
Discover tips and strategies to find the most affordable flight options for your journey from Bilbao (BIO) to San Francisco (SFO). 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 July 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $431 (Orbitz) |
One-way from | $388 (British Airways) |
Popular in | July |
Cheapest in | June |
Average price | $964 |
Cheapflights Fare Finder
Customize your flight search to find flights from Bilbao to San Francisco 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 July 1, 2026.
Use the filters below to find and compare flights from Bilbao to San Francisco that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
Quickest round-trip
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Thu 9/17
6:45 am-11:45 am
1 stop14h 00m
San Francisco
Tue 9/29
3:05 pm-5:30 pm
1 stop17h 25m
$674
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Fri 12/25
6:50 am-7:37 pm
2 stops21h 47m
San Francisco
Sat 1/9
2:20 pm-5:25 pm
2 stops18h 05m
$701
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Tue 9/15
6:50 am-3:20 pm
1 stop17h 30m
San Francisco
Sun 9/27
9:05 pm-11:25 pm
1 stop17h 20m
$706
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Fri 12/25
6:50 am-11:45 am
1 stop13h 55m
San Francisco
Sat 1/9
2:20 pm-5:25 pm
2 stops18h 05m
$719
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Tue 8/25
2:05 pm-12:40 pm
1 stop31h 35m
San Francisco
Wed 9/9
2:20 pm-11:25 pm
2 stops24h 05m
$747
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Sun 8/23
6:45 am-11:45 am
1 stop14h 00m
San Francisco
Mon 9/7
7:00 am-9:50 am
2 stops17h 50m
$867
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Fri 8/21
6:45 am-11:45 am
1 stop14h 00m
San Francisco
Sun 8/30
10:45 am-5:30 pm
2 stops21h 45m
$867
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Wed 12/23
5:20 pm-11:45 am
1 stop27h 25m
San Francisco
Fri 1/8
2:20 pm-5:25 pm
2 stops18h 05m
$872
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Wed 12/23
5:20 pm-11:45 am
1 stop27h 25m
San Francisco
Thu 1/7
2:20 pm-5:25 pm
2 stops18h 05m
$872
BilbaoSan Francisco
BIO - SFO
BIOSFO
Bilbao
Mon 8/24
12:00 pm-11:45 am
1 stop32h 45m
San Francisco
Sun 9/6
3:05 pm-9:50 am
1 stop33h 45m
$874
Showing 1-10 of 22 resultsSorted by cheapest first
- Most accurate provider: When it comes to deals on Bilbao-San Francisco flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Bilbao-San Francisco flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Bilbao-San Francisco flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Bilbao-San Francisco 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 Francisco 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 Francisco
Have a flexible travel schedule? Discover the best time to fly to San Francisco from Bilbao with our price prediction graph.
BIO-SFO
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 Bilbao to San Francisco
How far ahead should I book a flight from Bilbao to San Francisco?
The price you pay for your flight from Bilbao to San Francisco may vary depending on when you book. For the best chance of a lower fare, look to book 26 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest month to book a flight from Bilbao to San Francisco?
Currently, June is the cheapest month in which you can book a flight from Bilbao to San Francisco (average of $562). Flying from Bilbao to San Francisco in July is currently the most expensive (average of $964). 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.
How much does it cost to fly round-trip from Bilbao to San Francisco?
Reviews of airlines servicing San Francisco
Get insights into the airlines that provide service to San Francisco. 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 San Francisco. Reviews last updated July 1, 2026.
Read reviews from past customers who have flown United Airlines from Bilbao to San Francisco. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Crew
8.1
Food
6.6
Boarding
7.7
Entertainment
7.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Crew
8.1
Food
6.6
Boarding
7.7
Entertainment
7.1
Overall
7.4
Comfort
7.3
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Related info for your journey
Find useful and relevant information for your journey from Bilbao to San Francisco. 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 Francisco?
Book flights to San Francisco if you plan to visit one of these locationsSouth San Francisco
Santa Clara
Santa Cruz
Fairfield
Burlingame
Redwood City
Rancho Cordova
Roseville
Cupertino
Emeryville
Newark
San Bruno
Watsonville
Hayward
San Ramon
San Carlos
Daly City
Turlock
Vallejo
San Lorenzo
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Bilbao
Popular flights
San Francisco flight routes
Alternative routes for Bilbao to San Francisco
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to San Francisco by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Bilbao to San Francisco by cabin class
Find flights from Bilbao to San Francisco, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Bilbao and San Francisco flights
Browse other Bilbao and San Francisco flight options. Last updated on July 1, 2026.
Other flights from Bilbao
Browse through other flights departing from Bilbao. Flights are based on user searches made on Cheapflights and were last updated on July 1, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Other flights to San Francisco
Explore flights to San Francisco departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 1, 2026.
Top airline flying from Bilbao to San Francisco
Discover the top airline that operate flights from Bilbao to San Francisco. 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 July 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$768 | Average$903 | FlexibilityNo cancel fee | On-time69% |