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BIO - SFO

$431 Find cheap flights from Bilbao to San Francisco

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bilbao to San Francisco departing on 10/17. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Sun 5/26
Sun 6/2

Search hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bilbao to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bilbao to San Francisco, as well as popular online travel agencies
In the last 7 days travelers have searched 44,979,812 times on KAYAK, and here is why:

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Bilbao to San Francisco (BIO-SFO)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bilbao to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
6:45 am - 12:14 amBIO-SFO
26h 29m2 stops
11:57 am - 11:15 pmSFO-BIO
26h 18m2 stops
Thu, Oct 17 - Mon, Nov 4
9:15 am - 4:10 pmBIO-SFO
15h 55m1 stop
6:03 am - 8:30 amSFO-BIO
17h 27m2 stops
$442American Airlines
Find Deal
Thu, May 9 - Sun, May 26
6:45 am - 3:50 pmBIO-SFO
18h 05m1 stop
7:15 pm - 11:15 pmSFO-BIO
20h 00m1 stop
$463Finnair
Find Deal
Thu, Oct 3 - Sat, Oct 26
4:40 pm - 2:35 pmBIO-SFO
30h 55m1 stop
5:40 pm - 5:55 pmSFO-BIO
16h 15m1 stop
$468TAP AIR PORTUGAL
Find Deal
Tue, Oct 1 - Mon, Oct 28
12:10 pm - 2:35 pmBIO-SFO
35h 25m1 stop
5:40 pm - 5:55 pmSFO-BIO
16h 15m1 stop
$474TAP AIR PORTUGAL
Find Deal
Wed, Oct 2 - Mon, Oct 28
7:10 am - 6:00 pmBIO-SFO
19h 50m1 stop
7:01 am - 11:25 amSFO-BIO
20h 24m2 stops
$482Delta
Find Deal
Sun, Oct 6 - Tue, Oct 29
6:45 am - 12:14 amBIO-SFO
26h 29m2 stops
7:15 pm - 11:15 pmSFO-BIO
20h 00m1 stop
$485Finnair
Find Deal
Fri, Oct 4 - Sat, Oct 26
6:50 am - 7:18 pmBIO-SFO
21h 28m2 stops
1:50 pm - 7:40 pmSFO-BIO
20h 50m1 stop
$488Delta
Find Deal
Wed, Oct 2 - Fri, Oct 25
11:35 am - 9:00 pmBIO-SFO
18h 25m1 stop
1:30 pm - 11:25 pmSFO-BIO
24h 55m1 stop
$503Lufthansa
Find Deal
Thu, May 9 - Wed, May 22
7:35 am - 2:30 pmBIO-SFO
15h 55m1 stop
1:30 pm - 11:25 pmSFO-BIO
24h 55m1 stop
$524Lufthansa
Find Deal
Wed, May 8 - Wed, May 22

Flights from Bilbao to San Francisco - Travel Insights & Trends

Get data-powered insights and trends into flights from Bilbao to San Francisco to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Bilbao to San Francisco?

The average price of all flights from Bilbao to San Francisco clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to San Francisco on a Wednesday and more expensive on a Friday. On your return trip to Bilbao, you should consider flying back on a Sunday, and avoid Fridays for better deals.

What is the cheapest month to fly from Bilbao to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Bilbao to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from Bilbao to San Francisco is February, where tickets cost $450 on average. On the other hand, the most expensive months are July and August, where the average cost of tickets is $909 and $866 respectively.

How far in advance should I book a flight from Bilbao to San Francisco?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Bilbao to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Bilbao to San Francisco, you should book around 1 day before departure. For the absolute cheapest price, our data suggests you should book 78 days before departure.

Which airlines provide the cheapest flights from Bilbao to San Francisco?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from Bilbao to San Francisco found on KAYAK was with Turkish Airlines for $664. American Airlines proposed a round-trip connection from $442 and Finnair from $463.

Good to know

Low season

January

High season

July

Cheapest flight

$431
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 42% increase in price.
Flight from Bilbao to San Francisco

When to book flights from Bilbao to San Francisco

Are your dates flexible? Find out the best times to travel from Bilbao to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Bilbao to San Francisco

  • What flights from Bilbao to San Francisco are the most eco-friendly?

    On flights to San Francisco from Bilbao, each person emits about 5,271 lbs of CO2. You can find greener flights with KAYAK’s “Less CO2” sort, such as Delta’s flights through Amsterdam and Minneapolis, on which you could save about 44%, or 2,285 lbs of CO2. For flights with only one layover, you could choose Air France through Paris, which would still save about 36%, or 1,884 lbs of CO2.

  • Will I be able to collect frequent flyer points or miles from my flight to San Francisco from Bilbao?

    You can use the “Alliance” filter to only see options that should help you accrue miles for your frequent flyer program. For example, if you belong to United’s MileagePlus program, you can set the “Alliance” filter to “Star Alliance” and only see United flights and those with alliance partners like Lufthansa and Turkish Airlines.

  • How long will I have to wait between connections on my flight from Bilbao to San Francisco?

    You may have connections as you travel to San Francisco, but you do not need to wait too long. Under the “Duration” filter of your KAYAK search, you can set the “Layover” setting to find flights such as Lufthansa – with a stop in Munich for under 3 hours, enough to stretch your legs and maybe do a little duty-free shopping before your flight to San Francisco.

  • Will there be in-flight entertainment on my trip to San Francisco from Bilbao?

    If you want to know what onboard entertainment will help you pass the time from Bilbao to San Francisco, you can expand the flight information on your KAYAK results to see, for example, that TAP AIR may only have limited Wi-Fi on the first leg to Lisbon, but then you’ll get a seat back console for on-demand content on the longer flight to San Francisco.

  • What is the cheapest flight from Bilbao to San Francisco?

    In the last 3 days, the lowest price for a flight from Bilbao to San Francisco was $664 for a one-way ticket and $431 for a round-trip.

  • Do I need a passport to fly between Bilbao and San Francisco?

    Yes

  • Which aircraft models fly most regularly from Bilbao to San Francisco?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Bilbao to San Francisco?

    Star Alliance, SkyTeam, and oneworld are the airline alliances operating flights between Bilbao and San Francisco, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Bilbao to San Francisco, Delta or Lufthansa?

    The two airlines most popular with KAYAK users for flights from Bilbao to San Francisco are Delta and Lufthansa. With an average price for the route of $512 and an overall rating of 8.0, Delta is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $628 and an overall rating of 7.0.

  • How does KAYAK find such low prices on flights from Bilbao to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Bilbao to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Bilbao to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Bilbao is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Bilbao to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Bilbao with another airline. Booking your flights between Bilbao and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Bilbao to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Bilbao up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top tips for finding a cheap flight from BIO to San Francisco

  • Most flights to San Francisco (SFO) from Bilbao (BIO) have layovers. Iberia, for example, typically stops in Madrid and then Washington, D.C. or Los Angeles. If you prefer one stop, Lufthansa usually stops in Frankfurt or Munich, while Delta often stops in Amsterdam or Paris.
  • If you are flying to San Francisco from Bilbao with TAP Air Discount Economy, you can bring a carry-on that is no bigger than 22 × 16 × 8 inches and weighs no more than 22 lbs. You are also allowed a personal item, such as a laptop bag or purse, which cannot be bigger than 16 × 12 × 5 inches or weigh over 4.4 lbs.
  • Want to get comfortable in a lounge while you wait for your flight to San Francisco? At Bilbao Airport (BIO), you can pay for access to the VIP Lounge, located on the mezzanine level of the boarding area. You can relax and get a bite to eat or something to drink in comfort.
  • If you are flying with an infant to San Francisco from Bilbao, Lufthansa allows certain strollers and prams on board, free of charge as an added carry-on item, and can provide a bassinet upon request. You need to inform the airline at least 52 hours before your flight, and there may be a fee for the bassinet.
  • For public transportation from San Francisco Airport (SFO) to downtown, there is a BART train station in the International Terminal that you can take to various locations in the city. In addition, there are SamTrans public bus stops outside the baggage claim areas of Terminals 2 and 3 and the International Terminal.
See more tips

Top airlines flying from Bilbao to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Bilbao to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Bilbao to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10975 reviews
8.2boarding
7.9comfort
7.4food
8.0entertainment
8.6crew
Airline reviews

There was a loud squeaky sound the whole time we were flying.

6.0 GoodEliza, Apr 2024SAN - LAX
Read more about Delta reviews

There was a loud squeaky sound the whole time we were flying.

Had a broken tray in business class. Crew just shrugged it off.

I didn’t like that I could not select my seat and was assigned a seat when I checked in at LAX

Great experience overall. Check in at Austin was congested as they only have about 6 check in kiosks, one was broken, and there was a lot of Spring Break travelers.

I was sitting at comfort +. One of the Asian male crew was so loud when he delivered service. When he asked questions or what food you need, he was shouting. He must be a prison guard before going Delta.

Bag drop off was slow and annoying. Only 2 agents at the entire delta desk, and no one directing traffic for what line to be in, many confused people slowed down the process. Boarding was fine. Seats in Delta comfort plus were fine. Snacks were great! Definitely a bonus. The entertainment system was awful — old, slow, not responsive, and completely unable to play games due to some kind of error. But on the other hand, thank you to Delta for the free WiFi. That made it better.

Everything was very good other than I had selected a specific seat when I booked the flight and they changed it once I checked-in the day before my flight. I was still in first class but lost my aisle seat for a window seat. Being tall, the aisle offers more comfort so I always select an aisle seat.

Flight diverted in SD. Later take off in Seattle by 1.3hrs

Space and comfort was good. Staff could have been more helpful and friendly.

Crew was not friendly when I went to request a seat change.

The crew member put her luggage and boxes behind my seat so I was able to recline while the passenger in front of me did for 8 hours. My knees were forced against the seat for hours :(. Dude sitting next to me hasn't showered in weeks so I almost threw up.

Sorry my last review for prg to fra was for this flight. My prg to fra flight was fine but my second flight back to Washington DC was with a slow awful crew who wouldn’t come in a timely manner to take trash and take trash before serving coffee tea and was shoving other people’s bottles of water on me when we were not traveling together

Lufthansa was amazing. Definitely upgrade your seat if you can swing it - they take very good care of their passengers. Customs in DC is nothing short of a nightmare though. Stood in line waiting to go back through security for 30 minutes, had to RUN through and across two terminals to make my connection and only had 5 minutes to spare. Terrible. Very very poor coordination by the airport staff and CBP.

I was ver pleased with the service all the way through

I always try to book flights that don’t charge for baggage. Yet I was charged $75 for this flight.

Trouble keeps changing the time and I was booked different flight without knowing it was bad experience

My concern is with Flight: 441 IAH-FRA I was very cramped in my seat and the person in front of me was reclined. I pulled my wallet out of my purse and when finished I did my best to cram it back into my purse. Our flight was very delayed and we were rebooked twice and lots of airport time. As I got off the flight I noticed that I had dropped my wallet( containing all my credit & debit bank cards + 240 US dollars & 240 Euros. I spoke to customer service & Lost &Found. I was denied access to look on the plane. Therefore I have been without money and given no help. Paula Bjork 503.545.6698

So far so good. I missed my flight because of the Lufthansa diversion. United helped me to figure out how to get accommodations from Lufthansa for my long layover. They help me book appropriate onward flight.

During the flight there was a medical emergency. We were diverted. Of course I'm thankful they cared for the health of that passenger, but they did a poor job of communicating with the rest of us passengers. In the end we arrived at our destination several hours late, with no direction of how to rebook missed connecting flights. It all worked out in the end. Those of us that needed accommodations were put up in a hotel by Lufthansa until we could make it to our final destination. But it was United Airlines Personnel who really helped us navigate the process.

Always a pleasure to deal with United's helpful and knowledgeable staff

Book cheap flights from Bilbao to San Francisco

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Bilbao to San Francisco found on KAYAK in the last 72 hours.
7/8Mon
1 stopTurkish Airlines
32h 10mBIO-SFO
$664
6/22Sat
1 stopKLM
24h 35mBIO-SFO
$740
6/22Sat
2 stopsKLM
17h 37mBIO-SFO
$749
7/8Mon
2 stopsWestJet
43h 03mBIO-SFO
$756
7/8Mon
1 stopAir France
19h 50mBIO-SFO
$776
7/8Mon
3 stops
35h 07mBIO-SFO
$825
7/8Mon
2 stopsKLM
18h 29mBIO-SFO
$903
7/7Sun
1 stopAir France
19h 50mBIO-SFO
$912
6/22Sat
3 stops
30h 40mBIO-SFO
$1,019
7/7Sun
1 stopLufthansa
28h 45mBIO-SFO
$2,420

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Last minute flights from Bilbao to San Francisco

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from Bilbao to San Francisco that are departing in the next 10 days.
4/30Tue
multi-stop
49h 50mBIO-SFO
5/6Mon
multi-stop
20h 20mSFO-BIO
$620
4/30Tue
multi-stopLufthansa
18h 25mBIO-SFO
5/6Mon
multi-stopLufthansa
17h 20mSFO-BIO
$637
4/30Tue
multi-stop
18h 25mBIO-SFO
5/6Mon
multi-stop
18h 40mSFO-BIO
$675
4/30Tue
multi-stop
34h 50mBIO-SFO
5/6Mon
multi-stop
17h 39mSFO-BIO
$1,262

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Bilbao - San Francisco Flights

Departure:

Bilbao (BIO)Spain

Destination:

San Francisco (SFO)United States

Return flight deals:

San Francisco - Bilbao

Cabin classes: