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BIO - SFO

$421 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 10/22. 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
Wed 7/10
Wed 7/17

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 42,898,604 times on KAYAK, and here is why:

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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
7:35 am - 7:00 pmBIO-SFO
20h 25m1 stop
2:40 pm - 9:50 pmSFO-BIO
23h 10m1 stop
$421Lufthansa
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Tue, Oct 22 - Thu, Oct 31
6:45 am - 3:50 pmBIO-SFO
18h 05m1 stop
4:20 pm - 11:15 pmSFO-BIO
22h 55m2 stops
Thu, Oct 3 - Sun, Oct 27
7:35 am - 11:44 amBIO-SFO
37h 09m2 stops
11:45 am - 9:50 pmSFO-BIO
26h 05m2 stops
$427United Airlines
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Tue, Oct 22 - Thu, Oct 31
6:45 am - 6:38 pmBIO-SFO
20h 53m2 stops
11:40 am - 6:05 pmSFO-BIO
22h 25m2 stops
$439Air Canada
Find Deal
Thu, Oct 3 - Sun, Oct 27
9:15 am - 4:30 pmBIO-SFO
16h 15m1 stop
6:00 am - 12:55 pmSFO-BIO
21h 55m2 stops
$725American Airlines
Find Deal
Thu, Jun 20 - Mon, Jul 1
9:15 am - 10:16 pmBIO-SFO
22h 01m2 stops
6:00 am - 10:25 amSFO-BIO
19h 25m2 stops
$735American Airlines
Find Deal
Thu, Jun 20 - Mon, Jul 1
6:45 am - 9:12 amBIO-SFO
35h 27m2 stops
10:50 pm - 11:25 pmSFO-BIO
15h 35m1 stop
$747United Airlines
Find Deal
Thu, Jun 20 - Fri, Jul 5
7:10 am - 4:26 pmBIO-SFO
18h 16m2 stops
8:10 pm - 9:55 amSFO-BIO
28h 45m1 stop
$781KLM
Find Deal
Thu, Jul 18 - Wed, Sep 18
7:10 am - 3:50 pmBIO-SFO
17h 40m2 stops
1:55 pm - 10:45 pmSFO-BIO
23h 50m1 stop
$1,055KLM
Find Deal
Mon, Jul 29 - Tue, Aug 20
11:35 am - 11:12 pmBIO-SFO
20h 37m2 stops
11:40 am - 5:50 pmSFO-BIO
21h 10m2 stops
$1,393Air Canada
Find Deal
Sat, Jul 27 - Mon, Aug 19

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 Wednesday, 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 $405 on average. On the other hand, the most expensive months are July and June, where the average cost of tickets is $848 and $839 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 week before departure. For the absolute cheapest price, our data suggests you should book 87 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 TAP AIR PORTUGAL for $545. Lufthansa proposed a round-trip connection from $421 and United Airlines from $427.

Good to know

Low season

January

High season

August

Cheapest flight

$421
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 24% 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 $494 for a one-way ticket and $421 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 $530 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 $695 and an overall rating of 6.9.

  • 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

KAYAK’s top tips for finding a cheap flight from Bilbao 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 10295 reviews
8.6Crew
7.4Food
8.2Boarding
7.9Comfort
8.0Entertainment
Airline reviews

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

2.0 MediocreFelipe, Jun 2024DTW - SAN
Read more about Delta reviews

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

Had to change aircraft due to a faulty door. Surprisingly it only caused about an hour and a half of delay. Delta handled this situation as well as can be expected.

Your crew could maybe answer the call bell at least one of the times I pressed it. I pressed it first time with 2.5 hours left in our flight bc my partner was hungry and wanted a sandwich. We finally got the sandwich with 40 mins left in the flight.

The Flight crew didn’t serve us until about 1.5 hours into the flight because of turbulence but after it ended it was fine to move around. They served us water only and snacks and then NEVER, NOT ONE TIME came through to collect trash until right before landing about 1.5 hours later. There was absolutely no need for that. They crew was just standing around talking and visiting with each other and really never tried to see if we might want something besides water or even try to come pick up trash. This is VERY unusual for a Delta flight but it was not what I would have expected for a 4 hour flight.

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.

Terrible. Missed our flight to Newark as well as our flight to London. Complete disaster

The flight was wondering, especially the special assistance from airplane to airplane!

They canceled our flight last minute and we had to get another flight with twice the cost

Captain waited 45 minutes for late passengers boarding from Washington DC to Munich which was nice for them but caused our luggage to miss boarding our connection on to Bucharest. We then did not receive our luggage for about 48 hours after landing which was very inconvenient for our travel.

The worst experience of my life and I have been flying for 33 years

We were very upset when we checked in for our flight to be charged 208,00 euro for luggage fees when the site clearly states we are authorized one checked bag each and one carry-on. We have never experienced anything like this with Lufthansa and are very disappointed. We should be reimbursed this erroneous charge. I can forward all receipts once I am able to scan the them.

Poor, we had 1 hour to grab our checked luggage, go through customs, recheck bags and run across terminals to make our United flight. Poorly planned connections.

Check in in Albuquerque was awful. The people were great but they were over loaded. The procedures were terrible. We got through fine but it took 90+ minutes.

Crew was very nice and helpful. It was a good flight experience.

Efficient boarding. Good flight but seats were quite uncomfortable considering we'd already been sitting on two flights, total 13 hours or so. Would have liked to have prices on the menu of amenities on the plane. We could have used more water. Restrooms and nonalcoholic beverages at no extra cost, not much else. I realize these were discount tickets, and the airline has to break even, so I can't say we were expecting amenities to be plentiful. Still, it's nice with long flights to discover a few. Very pleasant crew though.

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.
7/10Wed
2 stops
35h 50mBIO-SFO
$494
7/13Sat
3 stops
51h 15mBIO-SFO
$503
7/10Wed
1 stopTAP AIR PORTUGAL
35h 25mBIO-SFO
$545
7/14Sun
1 stopTAP AIR PORTUGAL
26h 20mBIO-SFO
$571
7/17Wed
1 stopTurkish Airlines
25h 55mBIO-SFO
$573
7/17Wed
1 stopTurkish Airlines
25h 55mBIO-SFO
$621
7/15Mon
1 stopVueling
30h 50mBIO-SFO
$776
7/18Thu
2 stopsDelta
18h 16mBIO-SFO
$857
7/20Sat
1 stopDelta
16h 40mBIO-SFO
$945
7/13Sat
1 stopVueling
32h 15mBIO-SFO
$1,073

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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.
6/13Thu
multi-stopDelta
13h 55mBIO-SFO
11/8Fri
multi-stopDelta
22h 13mSFO-BIO
$654
6/13Thu
multi-stopDelta
20h 36mBIO-SFO
11/8Fri
multi-stopDelta
22h 13mSFO-BIO
$655
6/13Thu
multi-stop
13h 55mBIO-SFO
11/8Fri
multi-stop
21h 55mSFO-BIO
$753
6/13Thu
multi-stopLufthansa
20h 25mBIO-SFO
12/12Thu
multi-stopLufthansa
16h 15mSFO-BIO
$799
6/13Thu
multi-stopIberia
15h 55mBIO-SFO
12/12Thu
multi-stopIberia
21h 29mSFO-BIO
$801
6/13Thu
multi-stopUnited Airlines
20h 36mBIO-SFO
12/12Thu
multi-stopUnited Airlines
22h 50mSFO-BIO
$819
6/13Thu
multi-stop
28h 10mBIO-SFO
12/12Thu
multi-stop
24h 05mSFO-BIO
$982
6/13Thu
multi-stop
28h 10mBIO-SFO
11/8Fri
multi-stop
26h 40mSFO-BIO
$1,020
6/13Thu
multi-stop
33h 20mBIO-SFO
12/12Thu
multi-stop
24h 05mSFO-BIO
$1,021
6/13Thu
multi-stop
33h 20mBIO-SFO
11/8Fri
multi-stop
30h 00mSFO-BIO
$1,115

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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: