$389+ Cheap flights from San Francisco (SFO) 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 1/1. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BIO
Oct 4 — Oct 111
Round-trip
1 adult, Economy
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Find cheap flights from San Francisco to Bilbao 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 San Francisco to Bilbao
Cheapest
Best
Last-minute
One-way
Cheapest flights from San Francisco to BilbaoExplore the most affordable flight options available from San Francisco to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
Explore the most affordable flight options available from San Francisco to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 4, 2026.
This Justfly.com deal was found by Cheapflights users on 8/30. 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.
Sat 11/74:35 pm -
1 stop16h 20m
Tue 11/176:40 pm -
1 stop29h 05m
Deal found 8/30![TAP AIR PORTUGAL logo]()
$634
This FlightHub deal was found by Cheapflights users on 8/31. 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 9/304:35 pm -
1 stop33h 55m
Wed 10/1412:25 pm -
1 stop35h 05m
Deal found 8/31![TAP AIR PORTUGAL logo]()
$732
This Booking.com deal was found by Cheapflights users on 9/1. 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.
Tue 12/89:40 pm -
1 stop15h 15m
Mon 12/146:30 pm -
1 stop34h 05m
Deal found 9/1![Lufthansa logo]()
$734
This United deal was found by Cheapflights users on 9/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/810:44 pm -
2 stops27h 16m
Mon 12/146:30 pm -
1 stop34h 05m
Deal found 9/1![Multiple Airlines logo]()
$745
This FlightHub deal was found by Cheapflights users on 8/31. 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.
Sat 10/107:35 pm -
1 stop31h 05m
Mon 10/1912:25 pm -
1 stop34h 10m
Deal found 8/31![TAP AIR PORTUGAL logo]()
$747
This Scandinavian Airlines deal was found by Cheapflights users on 8/31. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:45 pm -
1 stop33h 50m
Wed 10/147:35 pm -
1 stop28h 05m
Deal found 8/31![Scandinavian Airlines logo]()
$748
This Priceline deal was found by Cheapflights users on 9/1. 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.
Tue 12/86:38 am -
2 stops21h 12m
Mon 12/149:35 pm -
2 stops20h 21m
Deal found 9/1![Iberia logo]()
$751
This Gotogate deal was found by Cheapflights users on 9/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/98:25 am -
2 stops24h 20m
Sun 12/136:45 am -
1 stop14h 50m
Deal found 9/1![Multiple Airlines logo]()
$761
This Gotogate deal was found by Cheapflights users on 9/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:05 pm -
1 stop17h 20m
Wed 10/146:50 am -
2 stops20h 41m
Deal found 9/1![Multiple Airlines logo]()
$768
This Gotogate deal was found by Cheapflights users on 9/1. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/49:05 pm -
1 stop17h 20m
Wed 10/146:50 am -
1 stop14h 50m
Deal found 9/1![Lufthansa logo]()
$775
Best flights from San Francisco to BilbaoDiscover carefully curated flight deals from San Francisco to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
Discover carefully curated flight deals from San Francisco to Bilbao that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 4, 2026.
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Mon 11/91:40 pm -
1 stop24h 30m
Tue 11/176:45 am -
1 stop14h 50m
Deal found 9/1![United Airlines logo]()
$788
This United deal was found by Cheapflights users on 9/1. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/46:45 am -
2 stops26h 10m
Wed 10/146:50 am -
2 stops20h 41m
Deal found 9/1![Multiple Airlines logo]()
$792
This Delta deal was found by Cheapflights users on 8/31. 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 10/49:55 am -
2 stops22h 35m
Wed 10/146:45 am -
2 stops21h 57m
Deal found 8/31![Delta logo]()
$801
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/119:05 pm -
1 stop17h 20m
Tue 10/206:50 am -
2 stops23h 58m
Deal found 8/31![United Airlines logo]()
$788
This United deal was found by Cheapflights users on 9/3. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/191:55 pm -
1 stop24h 30m
Mon 11/26:30 pm -
1 stop34h 05m
Deal found 9/3![Multiple Airlines logo]()
$830
This United Airlines deal was found by Cheapflights users on 9/1. 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 10/49:30 pm -
2 stops28h 40m
Wed 10/146:50 am -
2 stops20h 41m
Deal found 9/1![United Airlines logo]()
$792
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/119:05 pm -
1 stop17h 20m
Mon 10/192:10 pm -
1 stop31h 30m
Deal found 8/31![United Airlines logo]()
$809
This United Airlines deal was found by Cheapflights users on 9/1. 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.
Thu 10/291:50 pm -
2 stops19h 55m
Fri 11/66:45 am -
1 stop18h 20m
Deal found 9/1![United Airlines logo]()
$842
This United Airlines deal was found by Cheapflights users on 8/31. 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 10/76:00 am -
2 stops26h 55m
Sat 10/176:50 am -
2 stops23h 57m
Deal found 8/31![United Airlines logo]()
$853
This United Airlines deal was found by Cheapflights users on 9/3. 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 10/26:45 am -
2 stops26h 10m
Fri 10/97:15 am -
2 stops25h 44m
Deal found 9/3![United Airlines logo]()
$855
This United Airlines deal was found by Cheapflights users on 9/2. 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.
Thu 10/292:30 pm -
1 stop23h 25m
Sat 11/76:45 am -
1 stop18h 20m
Deal found 9/2![United Airlines logo]()
$888
Last-minute flights from San Francisco to BilbaoDiscover last-minute flight deals from San Francisco to Bilbao. Data last updated September 4, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Bilbao. Data last updated September 4, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 9/1. 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 9/1210:35 pm -
2 stops33h 55m
Wed 10/712:00 pm -
1 stop32h 45m
Deal found 9/1![Delta logo]()
$928
This SWISS deal was found by Cheapflights users on 9/2. 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.
Sun 9/137:35 pm -
1 stop30h 15m
Tue 10/68:55 pm -
2 stops30h 36m
Deal found 9/2![SWISS logo]()
$893
This Lufthansa deal was found by Cheapflights users on 9/1. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/132:40 pm -
1 stop23h 45m
Thu 10/86:50 am -
1 stop14h 50m
Deal found 9/1![Lufthansa logo]()
$909
This FlightHub deal was found by Cheapflights users on 9/2. 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.
Sun 9/139:05 pm -
1 stop17h 20m
Wed 10/76:50 am -
1 stop14h 50m
Deal found 9/2![Lufthansa logo]()
$921
This Delta deal was found by Cheapflights users on 9/1. 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 9/133:05 pm -
1 stop17h 25m
Mon 10/512:00 pm -
1 stop32h 45m
Deal found 9/1![Delta logo]()
$924
This Delta deal was found by Cheapflights users on 9/1. 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 9/133:05 pm -
1 stop17h 25m
Fri 10/97:10 am -
1 stop14h 40m
Deal found 9/1![Delta logo]()
$931
This Scandinavian Airlines deal was found by Cheapflights users on 9/1. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/148:59 pm -
2 stops36h 46m
Wed 10/77:35 pm -
1 stop28h 05m
Deal found 9/1![Scandinavian Airlines logo]()
$875
This FlightHub deal was found by Cheapflights users on 9/2. 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 9/144:30 pm -
1 stop16h 30m
Wed 10/712:25 pm -
1 stop35h 05m
Deal found 9/2![TAP AIR PORTUGAL logo]()
$887
This Cheapflightsfares deal was found by Cheapflights users on 9/2. 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.
Mon 9/149:05 pm -
1 stop17h 20m
Wed 10/711:55 am -
2 stops22h 04m
Deal found 9/2![Lufthansa logo]()
$920
This Air Canada deal was found by Cheapflights users on 9/1. 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.
Mon 9/148:31 am -
2 stops24h 24m
Thu 10/86:50 am -
2 stops20h 41m
Deal found 9/1![Air Canada logo]()
$925
This United deal was found by Cheapflights users on 9/2. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/1411:14 pm -
2 stops26h 31m
Wed 10/76:50 am -
2 stops20h 41m
Deal found 9/2![Multiple Airlines logo]()
$926
This Delta deal was found by Cheapflights users on 9/1. 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 9/148:10 pm -
1 stop28h 40m
Fri 10/97:10 am -
1 stop14h 40m
Deal found 9/1![Delta logo]()
$932
One-way flights from San Francisco to BilbaoSearch for one-way flight options from San Francisco to Bilbao. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
Search for one-way flight options from San Francisco to Bilbao. Find affordable one-way fares based on user searches. Data last updated September 4, 2026.
This Mytrip deal was found by Cheapflights users on 9/2. 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.
Fri 1/19:40 pm -
1 stop16h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Lufthansa logo]()
$389
This Delta deal was found by Cheapflights users on 9/2. 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 1/110:41 am -
2 stops21h 44m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/2![Delta logo]()
$401
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Fri 10/305:40 pm -
3 stops56h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$404
This Kiwi.com deal was found by Cheapflights users on 9/1. 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 9/156:00 am -
3 stops41h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![Multiple Airlines logo]()
$418
This Mytrip deal was found by Cheapflights users on 8/31. 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.
Sat 10/315:35 pm -
2 stops20h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$424
This Kiwi.com deal was found by Cheapflights users on 8/31. 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 9/164:35 pm -
2 stops38h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$449
This Kiwi.com deal was found by Cheapflights users on 8/31. 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.
Fri 9/1110:05 pm -
3 stops49h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 8/31![Multiple Airlines logo]()
$453
This Booking.com deal was found by Cheapflights users on 9/1. 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.
Tue 9/157:20 pm -
1 stop31h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/1![TAP AIR PORTUGAL logo]()
$485
Find flight deals from San Francisco to Bilbao
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 September 4, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $695 (Justfly.com) |
One-way from | $389 (Mytrip) |
Popular in | June |
Cheapest in | October |
Average price | $979 |
Cheapflights Fare Finder
Customize your flight search to find flights from San Francisco 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 7,457,451 searches. Data last updated September 4, 2026.
Use the filters below to find and compare flights from San Francisco to Bilbao that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 1/1
9:40 pm-11:10 pm
1 stop16h 30m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$389
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 1/1
10:41 am-5:25 pm
2 stops21h 44m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$401
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 10/30
5:40 pm-10:20 am
3 stops56h 40m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$404
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Sat 10/31
5:35 pm-9:45 pm
2 stops20h 10m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$424
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 9/11
10:05 pm-8:05 am
3 stops49h 00m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$453
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Tue 9/15
1:00 pm-8:20 am
2 stops34h 20m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$475
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Tue 9/15
7:20 pm-11:30 am
1 stop31h 10m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$485
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 1/1
11:59 am-4:50 pm
3 stops19h 51m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$510
Quickest round-trip
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 9/11
5:35 pm-5:10 pm
1 stop14h 35m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$679
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Mon 11/9
1:40 pm-11:10 pm
1 stop24h 30m
Bilbao
Tue 11/17
6:45 am-12:35 pm
1 stop14h 50m
$788
Showing 1-10 of 20 resultsSorted by cheapest first
Compare providers for flights from San Francisco 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 Francisco to Bilbao in September.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*1 star |
- Most accurate provider: When it comes to deals on San Francisco-Bilbao flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Francisco-Bilbao flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from San Francisco-Bilbao flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on San Francisco-Bilbao 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 San Francisco-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 Francisco to Bilbao
Have a flexible travel schedule? Discover the best time to fly to Bilbao from San Francisco with our price prediction graph.
SFO-BIO
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 Francisco to Bilbao
How far ahead should I book a flight from San Francisco to Bilbao?
The best time to book flights from San Francisco to Bilbao is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest month to book a flight from San Francisco to Bilbao?
Currently, October is the cheapest month in which you can book a flight from San Francisco to Bilbao (average of $552). Flying from San Francisco to Bilbao in June is currently the most expensive (average of $1,162). 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 San Francisco to Bilbao?
Airfare is typical for this route at the moment.
San Francisco to Bilbao flights typically cost between $681 and $1,065 in January.The cheapest round-trip price found within the last 5 days was $695 on TAP AIR PORTUGAL (Jan 4-Jan 19).
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 September 4, 2026.
Read reviews from past customers who have flown KLM,United Airlines, andLufthansa from San Francisco to Bilbao. 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.
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Overall
7.8
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Overall
7.8
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Overall
7.8
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Boarding
7.8
Comfort
7.7
Crew
8.4
Entertainment
7.2
Food
7.3
Overall
7.8
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Related info for your journey
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Top 3 airlines flying from San Francisco to Bilbao
Discover the top 3 airlines that operate flights from San Francisco 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 7,457,451 searches. Data last updated September 4, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$443 | Average$646 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$470 | Average$931 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$572 | Average$995 | FlexibilityNo cancel fee | On-time69% |