$401+ 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 10/14. Fares are subject to change and may not be available on all flights or dates of travel.
BIO — SFO
Sep 14 — Sep 211
Round-trip
1 adult, Economy
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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
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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
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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 August 15, 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 August 15, 2026.
This Flysmarter deal was found by Cheapflights users on 8/11. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/209:15 am -
2 stops21h 41m
Thu 11/1210:32 am -
2 stops17h 18m
Deal found 8/11![Iberia logo]()
$621
This Iberia deal was found by Cheapflights users on 8/13. 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 8/279:15 am -
2 stops19h 33m
Thu 9/101:27 pm -
2 stops18h 28m
Deal found 8/13![Iberia logo]()
$626
This Iberia deal was found by Cheapflights users on 8/11. 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 9/106:45 am -
1 stop18h 35m
Thu 9/245:55 pm -
1 stop29h 35m
Deal found 8/11![Iberia logo]()
$630
This Expedia deal was found by Cheapflights users on 8/11. 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 9/99:15 am -
2 stops19h 49m
Thu 9/245:55 pm -
1 stop29h 35m
Deal found 8/11![Iberia logo]()
$636
This American Airlines deal was found by Cheapflights users on 8/11. 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 12/39:15 am -
2 stops20h 45m
Sun 12/135:35 am -
2 stops17h 55m
Deal found 8/11![American Airlines logo]()
$644
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Mon 8/311:30 pm -
1 stop35h 50m
Sun 9/135:55 pm -
1 stop17h 55m
Deal found 8/12![Multiple Airlines logo]()
$649
This Flysmarter deal was found by Cheapflights users on 8/14. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:15 am -
1 stop16h 05m
Sun 9/135:55 pm -
1 stop14h 00m
Deal found 8/14![Iberia logo]()
$651
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 8/299:15 am -
1 stop16h 05m
Sun 9/135:55 pm -
1 stop14h 00m
Deal found 8/14![American Airlines logo]()
$654
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 August 15, 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 August 15, 2026.
This Iberia deal was found by Cheapflights users on 8/13. 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 8/276:45 am -
1 stop18h 35m
Thu 9/101:27 pm -
2 stops18h 28m
Deal found 8/13![Iberia logo]()
$695
This United Airlines deal was found by Cheapflights users on 8/10. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/166:45 am -
1 stop18h 20m
Wed 1/209:40 pm -
1 stop15h 15m
Deal found 8/10![United Airlines logo]()
$697
This Cheapflightsfares deal was found by Cheapflights users on 8/11. 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.
Fri 10/306:45 am -
1 stop14h 50m
Fri 11/61:30 pm -
1 stop24h 40m
Deal found 8/11![Lufthansa logo]()
$715
This United Airlines deal was found by Cheapflights users on 8/14. 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 10/176:50 am -
2 stops37h 34m
Fri 10/302:30 pm -
1 stop24h 40m
Deal found 8/14![United Airlines logo]()
$736
This United Airlines deal was found by Cheapflights users on 8/15. 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 10/186:50 am -
2 stops37h 34m
Sat 10/3110:40 pm -
1 stop16h 40m
Deal found 8/15![United Airlines logo]()
$738
Last-minute flights from Bilbao to San FranciscoDiscover last-minute flight deals from Bilbao to San Francisco. Data last updated August 15, 2026 and is based on user searches.
Discover last-minute flight deals from Bilbao to San Francisco. Data last updated August 15, 2026 and is based on user searches.
This Iberia deal was found by Cheapflights users on 8/13. 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 8/279:15 am -
2 stops19h 33m
Thu 9/101:27 pm -
2 stops18h 28m
Deal found 8/13![Iberia logo]()
$626
This Flysmarter deal was found by Cheapflights users on 8/14. 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 Flysmarter is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/299:15 am -
1 stop16h 05m
Sun 9/135:55 pm -
1 stop14h 00m
Deal found 8/14![Iberia logo]()
$651
This American Airlines deal was found by Cheapflights users on 8/14. 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.
Sat 8/299:15 am -
1 stop16h 05m
Sun 9/135:55 pm -
1 stop14h 00m
Deal found 8/14![American Airlines logo]()
$654
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Sat 8/299:15 am -
2 stops22h 05m
Sun 9/135:55 pm -
1 stop17h 55m
Deal found 8/12![Multiple Airlines logo]()
$661
This American Airlines deal was found by Cheapflights users on 8/12. 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.
Mon 8/311:30 pm -
1 stop35h 50m
Sun 9/135:55 pm -
1 stop17h 55m
Deal found 8/12![Multiple Airlines logo]()
$649
This Iberia deal was found by Cheapflights users on 8/12. 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 9/36:45 am -
1 stop18h 35m
Thu 9/101:27 pm -
2 stops18h 28m
Deal found 8/12![Iberia logo]()
$621
This Expedia deal was found by Cheapflights users on 8/11. 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 9/99:15 am -
2 stops19h 49m
Thu 9/245:55 pm -
1 stop29h 35m
Deal found 8/11![Iberia logo]()
$636
This Iberia deal was found by Cheapflights users on 8/11. 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 9/106:45 am -
1 stop18h 35m
Thu 9/245:55 pm -
1 stop29h 35m
Deal found 8/11![Iberia logo]()
$630
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 August 15, 2026.
Search for one-way flight options from Bilbao to San Francisco. Find affordable one-way fares based on user searches. Data last updated August 15, 2026.
This Iberia deal was found by Cheapflights users on 8/11. 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 10/149:15 am -
2 stops23h 44m
Deal found 8/11![Iberia logo]()
$401
This Travelocity deal was found by Cheapflights users on 8/10. 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 Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/235:35 pm -
2 stops38h 18m
Deal found 8/10![Iberia logo]()
$415
This Kiwi.com deal was found by Cheapflights users on 8/11. 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 9/71:35 pm -
3 stops55h 40m
Deal found 8/11![Multiple Airlines logo]()
$427
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 9/29:35 pm -
3 stops33h 20m
Deal found 8/12![Multiple Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 8/11. 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 10/16:45 am -
1 stop14h 00m
Deal found 8/11![Delta logo]()
$449
This FlightHub deal was found by Cheapflights users on 8/10. 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.
Wed 12/239:35 pm -
2 stops30h 10m
Deal found 8/10![British Airways logo]()
$450
This Delta deal was found by Cheapflights users on 8/11. 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 9/306:45 am -
2 stops18h 09m
Deal found 8/11![Delta logo]()
$454
This Delta deal was found by Cheapflights users on 8/11. 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 10/117:10 am -
1 stop14h 40m
Deal found 8/11![Delta logo]()
$455
This Kiwi.com deal was found by Cheapflights users on 8/12. 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.
Tue 9/19:05 pm -
2 stops26h 30m
Deal found 8/12![Multiple Airlines logo]()
$461
This Kiwi.com deal was found by Cheapflights users on 8/14. 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.
Tue 9/157:00 am -
3 stops38h 00m
Deal found 8/14![Multiple Airlines logo]()
$464
This Kiwi.com deal was found by Cheapflights users on 8/12. 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 8/303:05 pm -
3 stops38h 35m
Deal found 8/12![Multiple Airlines logo]()
$466
This KAYAK deal was found by Cheapflights users on 8/11. 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.
Sun 11/153:55 pm -
1 stop32h 40m
Deal found 8/11![Multiple Airlines logo]()
$469
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 August 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $621 (Flysmarter) |
One-way from | $401 (Iberia) |
Popular in | July |
Cheapest in | June |
Average price | $881 |
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 August 15, 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
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Thu 8/27
6:45 am-4:20 pm
1 stop18h 35m
San Francisco
Thu 9/10
1:27 pm-4:55 pm
2 stops18h 28m
$695
Quickest round-trip
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Sat 1/16
6:45 am-4:05 pm
1 stop18h 20m
San Francisco
Wed 1/20
9:40 pm-9:55 pm
1 stop15h 15m
$697
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Fri 10/30
6:45 am-1:35 pm
1 stop14h 50m
San Francisco
Fri 11/6
1:30 pm-11:10 pm
1 stop24h 40m
$715
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Sat 10/17
6:50 am-11:24 am
2 stops37h 34m
San Francisco
Fri 10/30
2:30 pm-11:10 pm
1 stop24h 40m
$736
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Sun 10/18
6:50 am-11:24 am
2 stops37h 34m
San Francisco
Sat 10/31
10:40 pm-11:20 pm
1 stop16h 40m
$738
Cheapest one-way
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Wed 9/2
9:35 pm-9:55 pm
3 stops33h 20m
$429
Quickest one-way
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Wed 10/14
6:45 am-11:45 am
1 stop14h 00m
$449
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Fri 10/16
6:45 am-5:15 pm
2 stops19h 30m
$454
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Sat 11/14
6:45 am-10:40 am
2 stops36h 55m
$493
BilbaoSan Francisco
BIO Bilbao - SFO San Francisco
BIOSFO
Bilbao
Mon 10/12
9:35 pm-8:45 pm
2 stops32h 10m
$499
Showing 1-10 of 16 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 $553). Flying from Bilbao to San Francisco in July is currently the most expensive (average of $967). 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?
Airfare is below average for this route at the moment.
Bilbao to San Francisco flights typically cost between $774 and $940 in October.The cheapest round-trip price found within the last 5 days was $621 on Iberia (Oct 20-Nov 12).
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 August 15, 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.
Comfort
7.3
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
Reviews
1 / 20
10.0
ExcellentAnonymous,Sep 2025
FRA - SFO
Comfort
7.3
Entertainment
7.1
Food
6.7
Boarding
7.7
Overall
7.4
Crew
8.1
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
Walnut Creek
San Bruno
Fairfield
Emeryville
Roseville
Burlingame
Rancho Cordova
Vallejo
Cupertino
Newark
Hayward
San Ramon
Redwood City
San Carlos
Manteca
Turlock
San Lorenzo
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Bilbao and San Francisco flights
Browse other Bilbao and San Francisco flight options. Last updated on August 15, 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 August 15, 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 August 15, 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 August 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$768 | Average$917 | FlexibilityNo cancel fee | On-time69% |