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SFO - BIO

$364 Find cheap flights from San Francisco to Bilbao

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Bilbao departing on 8/17. 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
Wed 6/5
Wed 6/12

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

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Bilbao.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Bilbao.
In the last 7 days travelers have searched 42,573,820 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from San Francisco to Bilbao 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
8:10 pm - 11:00 pmSFO-BIO
17h 50m1 stop
11:00 pm - 6:10 pmBIO-SFO
28h 10m1 stop
$577Vueling
Find Deal
Sun, Sep 22 - Mon, Oct 7
8:10 pm - 11:00 pmSFO-BIO
17h 50m1 stop
3:50 pm - 6:10 pmBIO-SFO
35h 20m1 stop
$582Vueling
Find Deal
Sun, Sep 22 - Mon, Oct 7
8:10 pm - 11:00 pmSFO-BIO
17h 50m1 stop
7:40 am - 6:10 pmBIO-SFO
19h 30m1 stop
$616Iberia
Find Deal
Tue, Sep 24 - Tue, Oct 8
8:15 am - 11:25 pmSFO-BIO
30h 10m2 stops
7:35 am - 12:52 amBIO-SFO
26h 17m2 stops
$641Lufthansa
Find Deal
Wed, Aug 21 - Wed, Sep 4
9:05 pm - 11:25 pmSFO-BIO
17h 20m1 stop
2:10 pm - 6:40 pmBIO-SFO
37h 30m2 stops
$667United Airlines
Find Deal
Tue, Oct 8 - Mon, Oct 21
9:05 pm - 11:25 pmSFO-BIO
17h 20m1 stop
6:35 pm - 12:40 pmBIO-SFO
27h 05m2 stops
$668Lufthansa
Find Deal
Tue, Oct 8 - Mon, Oct 21
8:10 pm - 10:00 pmSFO-BIO
16h 50m1 stop
7:10 am - 12:45 pmBIO-SFO
14h 35m1 stop
$831KLM
Find Deal
Fri, May 17 - Fri, May 24
8:10 pm - 10:00 pmSFO-BIO
16h 50m1 stop
10:30 am - 7:56 pmBIO-SFO
18h 26m2 stops
$841KLM
Find Deal
Fri, May 17 - Fri, May 24
4:50 pm - 1:00 pmSFO-BIO
35h 10m2 stops
6:45 am - 8:50 pmBIO-SFO
23h 05m2 stops
$872United Airlines
Find Deal
Sat, Aug 31 - Sat, Dec 14
6:15 pm - 11:00 pmSFO-BIO
19h 45m2 stops
9:15 am - 9:00 pmBIO-SFO
20h 45m2 stops
$1,181Iberia
Find Deal
Tue, Jul 2 - Sat, Jul 13

Flights from San Francisco to Bilbao - Travel Insights & Trends

Get data-powered insights and trends into flights from San Francisco to Bilbao 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 San Francisco to Bilbao?

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from San Francisco to Bilbao, 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 San Francisco to Bilbao is February, where tickets cost $594 on average. On the other hand, the most expensive months are June and July, where the average cost of tickets is $1,523 and $1,297 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from San Francisco to Bilbao, 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 San Francisco to Bilbao, you should book around 2 days before departure. For the absolute cheapest price, our data suggests you should book 52 days before departure.

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

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 San Francisco to Bilbao found on KAYAK was with Vueling for $501. Vueling proposed a round-trip connection from $577 and Iberia from $616.

Good to know

Low season

January

High season

June

Cheapest flight

$364
Best time to beat the crowds with an average 32% drop in price.
Most popular time to fly with an average 62% increase in price.
Flight from San Francisco to Bilbao

When to book flights from San Francisco to Bilbao

Are your dates flexible? Find out the best times to travel from San Francisco to Bilbao 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 San Francisco to Bilbao

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

    In the last 3 days, the lowest price for a flight from San Francisco to Bilbao was $364 for a one-way ticket and $577 for a round-trip.

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

    Yes, you’ll need a passport to travel to Bilbao from San Francisco.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from San Francisco to Bilbao are Delta and KLM. With an average price for the route of $1,164 and an overall rating of 8.0, Delta is the most popular choice. KLM is also a great choice for the route, with an average price of $1,075 and an overall rating of 7.8.

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

    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 San Francisco to Bilbao.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from San Francisco 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 San Francisco to Bilbao?

    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 Bilbao with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and BIO 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 San Francisco to Bilbao?

    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 Bilbao from San Francisco up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

Top 5 airlines serving from San Francisco to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Bilbao. 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 San Francisco to Bilbao? 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 10818 reviews
8.2Boarding
7.4Food
8.6Crew
8.0Entertainment
7.9Comfort
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.

I didn’t not like that I could not select my seat and ended up with the worse seat.

The landing was bad and the hostess came two times and i was sleeping but when she served the person that nexts to me I woke up and she didn’t even asked me if I need any drink or snacks two times!!!!

Plane was late because of a mechanical malfunction and the food listed as available was not. Flight attendants seem over worked and under paid. They just done seem happy. And that can be seen in their faces.

Waited 3 hours on a plane to de-ice due to manpower issues. Waited another hour and a half once we landed because of a gate issue. Missed my connections. Created. A total of 13 hours of delay.

Great, on time departure, friendly and accommodating crew, great leg room, Smith flight

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

Honestly, I didn’t expect that I will experience this long time wait during the check in. There was only one person who was taking care of the passengers for the economy class and it took us to wait about one hour to do our check i. As a result we barely get to the airplane as the gate was at the end of the airport. That is totally not professional where one crue is working at the registration desk with economy and 3-4 crues are helping for the business class.

Like most domestic flights in the US, you are basically on your own with this airline when it comes to food, so be sure to purchase meals and drinks ahead of time or expect to arrive starving and dehydrated (like I was).

You need to be a hacker to get the (Free) WiFi

The food from Lagos to Amsterdam was was very poor compared to AMS-YYZ

The flight was delayed for 2 hrs. Because they didn’t have a crew to fly. And it is not a first time for klm to do that. Last time they cancelled my filght and rebooked me 3 days later. Not reliable airline

Booked connecting flights with KlM. My serving flight was the furthest part of the airport. On arrival in Zurich. My two cases arrived but only one carry on belong to my son. His three suitcase didn't arrive. After enquiring we discovered they were still in Amsterdam. We landed at 11.12. We eventually left the airport just after one.

Overall a good experience. We were disappointed when we had to check our carry on due to the plane being full. KLM hadn’t notified us and we had valuable items in the carry on but they still made us check it. Some of the food was great and some was mediocre. Crew is really kind and funny.

It was nice to be on a legacy airline, people try at least.

The flight itself it was great nice food the crew were very nice and helpful, Checking in from Birmingham wasn't great long queues for bag dropped, And I had my hand luggage case taken away from me even though I requested to have it with me as I had breakables items. I was told I can not because of the length of the flight with no explanation at all no options was given for me to take my fragile items out of my case it was taken away with hold buggage I find the staff member who was checking me in very unpleasant !! Can we please be advise if the rules have changed about the the carry on hand luggage it will be easier to be advise on booking your tickect if we not allowed to take the hand luggage with me. Overall I had a good flight .

The plane was clean and the staff was friendly. Food and drinks as expected on international flights. The entertainment system was old style, with a pullout controller, and selections not as extensive as on other flights.

The food quality is poor. The staff are very friendly and accommodating. The entertainment program was limited. I experienced a delay of 30 minutes due to two issues. Passenger luggage had to be removed and there was a technical issue with the stairs not detaching from the aircraft. The pilot managed to compensate and we arrived only 15 minutes later. The luggage at Dubai airport was very slow. I waited over an hour.

Amazing KLM service and brilliant economy comfort seats. Well worth the extra.

The boarding was one of the worst I’ve ever experienced. The fault lays on Ohare Airport and not so much the airline. The waiting area by the gate was the size to accommodate a regional flight for 20-30 people and right next to a busy walkway. When you cramped nearly 300 passengers into that space is was unbearable.

Hated every minute of it. This flight should have only taken 1.5hrs but was delayed over 10hours. Now I am being told I cannot be compensated or refunded my ticket price or extra leg room, which I purchased but did not receive, because the airline is throwing the blame on the 3rd party I purchased tickets through and 3rd party putting the blame on airline. No one wants to help. They received their money and that's all they care about. Im going on 3 days of still trying to get to my final destination, had to cancel car rental, car insurance and hotel. Currently staying in airport until hotels open up. Thank you Lufthansa, Kayak, Underpricer and United for making this trip the worst ever.

Crew was great and did their best to make us comfortable and captain came out at the beginning to announce why the flight was delayed, weather situation up ahead, and kept us updated throughout the flight.

United WiFi is consistently unusable (it can take 10 mins to load a single web page). If you need Wifi to do work, be prepared to lose half a day of productivity.

Awful. I got stuck next to a person carrying a dog and behind someone with a dog. People need to board these dogs downstairs. The cabin is crowded enough with your pets

Packed in like sardines, very uncomfortable. Sitting the aisle my shoulder was rammed into numerous times by rushing flight attendants. Also flight was very cold.

Beverage and food services are excellent. We enjoy paying the extra for economy plus for the 3 inches more leg room to be exact.

No in flight entertainment, gate employees were very quick and impatient, plane was uncomfortable

Flight was delayed by 3 hours. The pilot made up 1 hour during the flight, but that made the wait at the airport 5 hours once you factor getting there 2 hours early.

Airline did not explain reasons why flight was delayed two hours. Explanations were badly needed and rarely provided. Problem seemed to clearly be the airline’s fault and not the fault of the weather or airport.

Very uncomfortable seats and seat backs, and I am only 5’9”. Delayed due to crew issues, spent a long time with no ventilation. Teeny overhead bins. Wifi worked well. Arrived safely.

Thankful for 2-4-2 economy seating. Food was ok. Free beer & wine in economy was nice. Served hot dinner, mud- flight snack and pre-arrival ham sandwich. Seat with pillow & blanket. Reasonable movie options. Overall, a good experience. IBERIA APP is terrible terrible terrible.... needs to get upgraded to equivalent of TAP Airlines App. No option to bid or request an upgrade. Very disappointing.

My luggage did not get to my Miami destination/home. I am waiting for it 24 hours later.

The only comment I have is why do you sell snacks on board? They should be free. When we take domestic flights here in US, our snacks are free. Also, please communicate with me in English. I received so many emails way before my flight that were in Spanish that I had to ask my son to interpret for me. You should be WELL AWARE if the customers you are communicating speak the language, it does mean that we speak and understand Spanish because we are traveling to Spain, NOT NECESSARILY! Thank you!

Flight was delayed by well over an hour. Communication was terrible.

I like the team but I don't like the food you provided with money. I want free food and free water.

An average flight experience. For our transatlantic portion, they provided a main meal and two snacks. However, the food was not very tasty and the drinks far too small and infrequent for such a long flight. The regrettable part of the flight was that the toilets were extremely filthy. I feel this is unacceptable.

Both flights were delayed. I lost my connection on the way back. No voucher or anything was givenx I had business ticket and no support to make it on time. I got to the door running 5 min after they close. Food really bad. Breakfast in business was worst that I what I remember in economy. Even though I have accumulated many miles, I don’t think Inwill keep buying Iberia. I am a frequent business traveler.

The food is really eco only level. Breakfast was shameful. I am considering to stop flying with Iberia. Business prices are as expensive as other companies with much better service.

Why no entertainment? Also water should be free, it is basic human right.

Late boarding. Delayed departure leading to rushed connection at Madrid Barajas. Not necessarily Iberia's fault but delay loading cargo didn't help.

Checked in is easy and it was a smooth flight from LAX to Munich

It was a busy flight and all the crew were very helpful and gracious

I wish the flight attendant was a little bit kinder

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

Used to love Lufthansa, but Rowe are too close together in Economy and passengers are allowed to recline their seats so far back it is impossible for those behind them to even reach for carry-on essentials during flight - except for meal service when flight attendants ask for seat backs to be raised, we can’t sleep on planes so this flight was most uncomfortable ever! Rod Rose

Horrible crowding on the seats, headphones provided did not fit or work in the entertainment center, seriously the most uncomfortable flight I have taken in a LONG time. The people in front of me were literally 5 inches from my face the entire flight. Did they change their seats recently? I remember it being tight but wow this was a whole new level. Also I am a 5'3" small woman so I can't even imagine a larger person dealing with that for 11 hrs.

Seat controls of lights were broken, and only 1 of the 2 seat TVs ever worked on the long flight. On the short flight there were no USB connections, on the long one they were difficult to access. Part of my meal was frozen, though the hot portion was good.

Lufthansa fails at mentioning no luggage when booking through points. We had to pay added fees to take checked bags to Europe for 2 weeks. The staff at check in were not helpful at all. told us "if we don't like it, then book another flight". Food was bad, they ran out of half the options. Vegetarian was terrible. The flight crew was nice, and tried to make it work ok.

The accommodations are top-notch. The only negative was that both our initial flights were delayed, which caused us to miss one and almost miss the other. The staff immediately handled the missed flight and compensated us for the inconvenience.

Food could be better quality - everything else was excellent , thanks Lufthansa team . GOD bless you!!!

Book cheap flights from San Francisco to Bilbao

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from San Francisco to Bilbao found on KAYAK in the last 72 hours.
8/17Sat
2 stops
46h 35mSFO-BIO
$364
5/16Thu
2 stops
57h 35mSFO-BIO
$427
7/24Wed
1 stopKLM
16h 50mSFO-BIO
$551
8/19Mon
2 stopsUnited Airlines
37h 15mSFO-BIO
$589
8/16Fri
2 stopsUnited Airlines
32h 38mSFO-BIO
$613
5/16Thu
1 stopLufthansa
23h 10mSFO-BIO
$707
5/16Thu
1 stopKLM
23h 50mSFO-BIO
$735
6/13Thu
1 stopLufthansa
35h 45mSFO-BIO
$771
7/23Tue
2 stopsAmerican Airlines
32h 51mSFO-BIO
$897
9/3Tue
2 stopsAmerican Airlines
34h 56mSFO-BIO
$1,424

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Last minute flights from San Francisco to Bilbao

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 San Francisco to Bilbao that are departing in the next 10 days.
5/7Tue
multi-stop
16h 20mSFO-BIO
6/4Tue
multi-stop
17h 10mBIO-SFO
$955
5/7Tue
multi-stop
23h 00mSFO-BIO
6/4Tue
multi-stop
24h 35mBIO-SFO
$1,069
5/7Tue
multi-stop
23h 00mSFO-BIO
6/4Tue
multi-stop
19h 15mBIO-SFO
$1,070
5/7Tue
multi-stop
23h 00mSFO-BIO
6/4Tue
multi-stop
34h 50mBIO-SFO
$1,084
5/7Tue
multi-stop
31h 55mSFO-BIO
6/4Tue
multi-stop
34h 50mBIO-SFO
$1,289

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San Francisco - Bilbao Flights

Departure:

San Francisco (SFO)United States

Destination:

Bilbao (BIO)Spain

Return flight deals:

Bilbao - San Francisco

Cabin classes:

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