$331+ 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 1/18. Fares are subject to change and may not be available on all flights or dates of travel.
SFO — BIO
Oct 16 — Oct 231
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 16, 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 16, 2026.
This Gotogate deal was found by Cheapflights users on 9/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/57:35 pm -
1 stop15h 30m
Tue 10/208:55 pm -
1 stop28h 20m
Deal found 9/15![SWISS logo]()
$586
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/219:05 pm -
1 stop17h 20m
Tue 10/66:50 am -
2 stops20h 41m
Deal found 9/11![Multiple Airlines logo]()
$590
This lastminute.com deal was found by Cheapflights users on 9/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:35 pm -
1 stop15h 30m
Tue 10/68:55 pm -
1 stop28h 20m
Deal found 9/11![SWISS logo]()
$591
This American Airlines deal was found by Cheapflights users on 9/15. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:00 am -
2 stops18h 30m
Tue 10/209:15 am -
2 stops20h 30m
Deal found 9/15![American Airlines logo]()
$592
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:10 am -
2 stops22h 50m
Tue 10/66:50 am -
2 stops20h 41m
Deal found 9/11![Air Canada logo]()
$599
This Flighttix deal was found by Cheapflights users on 9/12. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:05 pm -
1 stop17h 20m
Tue 10/136:50 am -
2 stops35h 38m
Deal found 9/12![Multiple Airlines logo]()
$607
This Air France deal was found by Cheapflights users on 9/13. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:05 pm -
1 stop21h 55m
Wed 9/307:10 am -
1 stop14h 40m
Deal found 9/13![Air France logo]()
$613
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:00 am -
2 stops18h 50m
Wed 9/307:10 am -
1 stop14h 40m
Deal found 9/13![Delta logo]()
$617
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:05 pm -
1 stop33h 45m
Tue 10/206:45 am -
2 stops19h 20m
Deal found 9/15![Delta logo]()
$618
This KLM deal was found by Cheapflights users on 9/15. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/52:15 pm -
2 stops17h 15m
Tue 10/207:10 am -
2 stops18h 55m
Deal found 9/15![KLM logo]()
$629
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/59:05 pm -
1 stop17h 20m
Mon 10/192:10 pm -
1 stop31h 30m
Deal found 9/11![United Airlines logo]()
$640
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 16, 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 16, 2026.
This Gotogate deal was found by Cheapflights users on 9/12. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/287:35 pm -
1 stop15h 30m
Tue 10/138:55 pm -
1 stop28h 20m
Deal found 9/12![SWISS logo]()
$590
This Flighttix deal was found by Cheapflights users on 9/12. 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 Flighttix is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/289:05 pm -
1 stop17h 20m
Tue 10/136:50 am -
2 stops35h 38m
Deal found 9/12![Multiple Airlines logo]()
$607
This Air France deal was found by Cheapflights users on 9/13. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:05 pm -
1 stop21h 55m
Wed 9/307:10 am -
1 stop14h 40m
Deal found 9/13![Air France logo]()
$613
This Delta deal was found by Cheapflights users on 9/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/53:05 pm -
1 stop33h 45m
Tue 10/206:45 am -
1 stop14h 00m
Deal found 9/15![Delta logo]()
$613
This United Airlines deal was found by Cheapflights users on 9/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/283:20 pm -
2 stops18h 25m
Wed 11/47:30 am -
1 stop16h 20m
Deal found 9/13![United Airlines logo]()
$646
This Gotogate deal was found by Cheapflights users on 9/14. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/269:40 pm -
1 stop15h 15m
Sat 12/57:30 am -
1 stop21h 05m
Deal found 9/14![Lufthansa logo]()
$670
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/2012:55 am -
2 stops23h 55m
Wed 9/307:10 am -
2 stops21h 48m
Deal found 9/13![Delta logo]()
$627
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/91:55 pm -
1 stop19h 00m
Mon 10/192:10 pm -
1 stop31h 30m
Deal found 9/11![United Airlines logo]()
$682
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/87:36 am -
2 stops25h 19m
Mon 10/197:15 am -
1 stop16h 15m
Deal found 9/11![United Airlines logo]()
$700
Last-minute flights from San Francisco to BilbaoDiscover last-minute flight deals from San Francisco to Bilbao. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from San Francisco to Bilbao. Data last updated September 16, 2026 and is based on user searches.
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/219:05 pm -
1 stop17h 20m
Tue 10/66:50 am -
2 stops20h 41m
Deal found 9/11![Multiple Airlines logo]()
$590
This lastminute.com deal was found by Cheapflights users on 9/11. 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 lastminute.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/217:35 pm -
1 stop15h 30m
Tue 10/68:55 pm -
1 stop28h 20m
Deal found 9/11![SWISS logo]()
$591
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:10 am -
2 stops22h 50m
Tue 10/66:50 am -
2 stops20h 41m
Deal found 9/11![Air Canada logo]()
$599
This Air France deal was found by Cheapflights users on 9/13. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/213:05 pm -
1 stop21h 55m
Wed 9/307:10 am -
1 stop14h 40m
Deal found 9/13![Air France logo]()
$613
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/216:00 am -
2 stops18h 50m
Wed 9/307:10 am -
1 stop14h 40m
Deal found 9/13![Delta logo]()
$617
This Gotogate deal was found by Cheapflights users on 9/11. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:05 pm -
1 stop17h 20m
Tue 10/66:50 am -
2 stops20h 41m
Deal found 9/11![Multiple Airlines logo]()
$645
This Air Canada deal was found by Cheapflights users on 9/11. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:10 am -
2 stops22h 50m
Tue 10/66:50 am -
2 stops20h 41m
Deal found 9/11![Air Canada logo]()
$665
This BusinessClass deal was found by Cheapflights users on 9/15. 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 BusinessClass is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:05 pm -
1 stop17h 20m
Sun 10/46:50 am -
1 stop22h 00m
Deal found 9/15![Lufthansa logo]()
$871
This Air France deal was found by Cheapflights users on 9/12. 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 Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:10 pm -
1 stop16h 50m
Sun 10/47:10 am -
1 stop14h 40m
Deal found 9/12![Air France logo]()
$907
This United Airlines deal was found by Cheapflights users on 9/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/2410:08 am -
2 stops28h 17m
Sun 9/276:50 am -
1 stop17h 30m
Deal found 9/11![United Airlines logo]()
$902
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 16, 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 16, 2026.
This KLM deal was found by Cheapflights users on 9/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 1/189:00 am -
2 stops17h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![KLM logo]()
$331
This Gotogate deal was found by Cheapflights users on 9/13. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/179:40 pm -
1 stop15h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Lufthansa logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Thu 12/34:40 pm -
2 stops40h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$346
This Delta deal was found by Cheapflights users on 9/13. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/1611:05 pm -
2 stops33h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Delta logo]()
$351
This Justfly.com deal was found by Cheapflights users on 9/13. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 1/178:25 am -
2 stops22h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Air Canada logo]()
$353
This Kiwi.com deal was found by Cheapflights users on 9/12. 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.
Fri 12/44:40 pm -
3 stops55h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Multiple Airlines logo]()
$357
This Kiwi.com deal was found by Cheapflights users on 9/13. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/144:40 pm -
2 stops40h 55m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Multiple Airlines logo]()
$379
This Delta deal was found by Cheapflights users on 9/11. 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.
Tue 12/151:00 pm -
2 stops19h 25m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Delta logo]()
$381
This KLM deal was found by Cheapflights users on 9/13. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 1/143:10 pm -
1 stop17h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![KLM logo]()
$396
This Vueling Global deal was found by Cheapflights users on 9/15. 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 Vueling Global is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/218:30 pm -
1 stop26h 45m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/15![Multiple Airlines logo]()
$398
This Lufthansa deal was found by Cheapflights users on 9/13. 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 Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 1/159:40 pm -
1 stop16h 30m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Lufthansa logo]()
$400
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 16, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $586 (Gotogate) |
One-way from | $346 (Kiwi.com) |
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 16, 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
Tue 1/19
9:00 am-11:50 am
2 stops17h 50m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$331
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Sun 1/17
3:10 pm-5:25 pm
1 stop17h 15m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$346
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Sat 1/16
11:05 pm-5:25 pm
2 stops33h 20m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$351
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Tue 12/15
7:00 am-11:30 am
2 stops19h 30m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$381
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Mon 9/21
8:30 pm-8:15 am
1 stop26h 45m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$398
Quickest round-trip
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Fri 1/15
9:40 pm-11:10 pm
1 stop16h 30m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$400
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Sun 10/11
9:05 pm-11:25 pm
1 stop17h 20m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$403
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Wed 1/20
8:10 am-5:00 pm
3 stops47h 50m
Bilbao
Wed 12/31
12:00 am-3:00 pm
Nonstop0h 00m
$435
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Mon 9/28
7:35 pm-8:05 pm
1 stop15h 30m
Bilbao
Tue 10/13
8:55 pm-4:15 pm
1 stop28h 20m
$590
San FranciscoBilbao
SFO San Francisco - BIO Bilbao
SFOBIO
San Francisco
Mon 9/28
9:05 pm-11:25 pm
1 stop17h 20m
Bilbao
Tue 10/13
6:50 am-9:28 am
2 stops35h 38m
$607
Showing 1-10 of 17 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
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 $572). 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 below average for this route at the moment.
San Francisco to Bilbao flights typically cost between $681 and $1,065 in October.The cheapest round-trip price found within the last 5 days was $586 on SWISS (Oct 5-Oct 20).
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 16, 2026.
Read reviews from past customers who have flown KLM,Delta, andUnited Airlines 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.
Overall
7.8
Crew
8.4
Comfort
7.7
Entertainment
7.2
Boarding
7.8
Food
7.3
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Overall
7.8
Crew
8.4
Comfort
7.7
Entertainment
7.2
Boarding
7.8
Food
7.3
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Overall
7.8
Crew
8.4
Comfort
7.7
Entertainment
7.2
Boarding
7.8
Food
7.3
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Overall
7.8
Crew
8.4
Comfort
7.7
Entertainment
7.2
Boarding
7.8
Food
7.3
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Overall
7.8
Crew
8.4
Comfort
7.7
Entertainment
7.2
Boarding
7.8
Food
7.3
Reviews
1 / 20
8.0
ExcellentMeghana,Aug 2026
QRO - ATL
Related info for your journey
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Top 4 airlines flying from San Francisco to Bilbao
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| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$443 | Average$702 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$470 | Average$931 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$572 | Average$983 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$710 | Average$968 | FlexibilityNo cancel fee | On-timeN/A |