$428 Find Cheap Flights from Bilbao to California

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 California departing on 11/21. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to California

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Bilbao to California, 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 California, as well as popular online travel agencies
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Cheap Flights from Bilbao to California

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Los Angeles
Los Angeles1 stop$444
San Francisco
San Francisco2 stops$428
San Diego
San Diego2 stops$797
San Jose
San Jose2 stops$463
Reno
Reno2 stops$929
Sacramento
Sacramento2 stops$952
Los Angeles
Los Angeles1 stop$444
San Francisco
San Francisco2 stops$428
San Diego
San Diego2 stops$797
San Jose
San Jose2 stops$463
Reno
Reno2 stops$929
Sacramento
Sacramento2 stops$952

Book Cheap Bilbao to California Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Bilbao to California 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Bilbao to California

Fri, Nov 21 - Sat, Dec 6
American Airlines Logo
9:15 am - 8:14 pmBIO-SFO
19h 59m2 stops
American Airlines Logo
7:00 am - 8:30 amSFO-BIO
16h 30m2 stops
$428American Airlines
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Mon, Feb 16 - Mon, Feb 23
American Airlines Logo
9:35 pm - 11:15 amBIO-SFO
22h 40m2 stops
American Airlines Logo
7:00 am - 12:50 pmSFO-BIO
20h 50m2 stops
$429American Airlines
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Thu, Nov 6 - Mon, Nov 10
Lufthansa Logo
6:45 am - 1:05 pmBIO-LAX
15h 20m1 stop
Lufthansa Logo
5:30 pm - 11:05 pmLAX-BIO
20h 35m1 stop
$437Lufthansa
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Thu, Nov 6 - Mon, Nov 10
Lufthansa Logo
6:45 am - 1:05 pmBIO-LAX
15h 20m1 stop
Lufthansa Logo
8:40 am - 10:50 amLAX-BIO
17h 10m2 stops
$440Lufthansa
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Mon, Jan 12 - Mon, Jan 19
Multiple Airlines Logo
6:45 am - 8:48 pmBIO-SFO
23h 03m2 stops
Multiple Airlines Logo
10:11 am - 11:15 pmSFO-BIO
28h 04m2 stops
$447Multiple Airlines
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Fri, Nov 14 - Tue, Nov 18
United Airlines Logo
6:45 am - 1:05 pmBIO-LAX
15h 20m1 stop
United Airlines Logo
5:30 pm - 9:55 pmLAX-BIO
19h 25m1 stop
$452United Airlines
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Thu, Nov 6 - Mon, Nov 10
United Airlines Logo
6:45 am - 1:05 pmBIO-LAX
15h 20m1 stop
United Airlines Logo
8:40 am - 10:50 amLAX-BIO
17h 10m2 stops
$453United Airlines
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Thu, Feb 19 - Mon, Feb 23
Iberia Logo
9:15 am - 9:31 pmBIO-SJC
21h 16m2 stops
Iberia Logo
11:01 am - 12:50 pmSJC-BIO
40h 49m2 stops
$463Iberia
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Thu, Nov 27 - Thu, Dec 4
Multiple Airlines Logo
12:50 pm - 8:10 pmBIO-SFO
16h 20m1 stop
Multiple Airlines Logo
1:30 pm - 6:05 pmSFO-BIO
19h 35m1 stop
$533Multiple Airlines
Find Deal
Fri, Nov 21 - Sat, Dec 6
Iberia Logo
6:45 am - 8:14 pmBIO-SFO
22h 29m2 stops
Iberia Logo
7:27 am - 12:50 pmSFO-BIO
20h 23m2 stops
$578Iberia
Find Deal
Booking Insights

KAYAK's insights & trends for Bilbao to California flights

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

What is the cheapest month to fly from Bilbao to California?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Bilbao to California, 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 California is January, when tickets cost $617 (return) on average. On the other hand, the most expensive months are August and December, when the average cost of round-trip tickets is $1,086 and $937 respectively.

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

The average price of all round-trip flights from Bilbao to California clicked on KAYAK for each day over the last 12 months.

When flying from Bilbao to California, you should consider leaving on a Thursday and avoid Mondays if you are looking for the best rates. For your return to Bilbao, you’ll find the best rates on Tuesdays and the most expensive ones on Wednesdays.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Bilbao to California, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Bilbao to California, you should book around 2 weeks before departure, which saves you about 39% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 13 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$428
Best time to beat the crowds with an average 16% drop in price.
Most popular time to fly with an average 42% increase in price.
Flight from Bilbao to San Francisco

FAQs - booking California flights

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

    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 California.

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

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

    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 from Bilbao to California with an airline and back with another airline.

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

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

  • What is the cheapest time of day to fly to California?

    The cheapest time of day to fly to California is generally in the morning, when round-trip flights cost $904 on average. The most expensive time of day to fly to California is generally in the morning, which is peak travel time and where the average cost of a ticket is $904.

Reviews of the top airline flying from Bilbao to California

 
See real verified KAYAK customer reviews for airlines flying from Bilbao to California. 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 California? 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.
7.4
United AirlinesOverall score based on 8999 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

10.0 ExcellentSandra, Oct 2025FCO - SFO
Read more United Airlines reviews

Flight from Rome to SFO was excellent compared To our flight to Europe from SFO. The food was much tastier. You can see how UNITED is skimping, though. Instead of getting something mid flight you had to ask for it. It was not automatically served. There was a cookie at the end of the arrival meal, for example that tasted like it just came out of a box. They used to serve a little container of nuts, now … a tiny container of nuts, mixed with pretzels. This was business class that you really have to pay for! But this is minor complaints compared to the overall. My major complaint is the position of the even numbered seats by the windows. You have to turn around to see your window & the positioning as some other controls are harder to get at. This is compared to the odd number seat that are perfectly aligned.

The food quality sucks. One must starve if they do not eat flesh Or wheat based products Some variety would be expected. The trivial amount of snacks and or food is inhumane

Flight was timely, relatively comfortable, with decent entertainment and food served. Only problem encountered was with the free messaging which I highly appreciate, but it did not work from iphone to non-iphones.

The internet service I paid for didn’t work at all and the flight crew was not very friendly.

Subject: Formal Complaint: Discriminatory and Unprofessional Conduct – Request for Immediate Action & Compensation Dear [Airline Customer Relations Team], I am writing to file a formal complaint regarding my recent travel experience with [Airline], which was by far the worst I have ever encountered. What occurred was not only unprofessional, but in several instances discriminatory, unsafe, and unacceptable. On the first leg of my trip, I arrived only four minutes past check-in. Instead of making any attempt to resolve the matter, your representative flatly denied me boarding and made me wait while she attended to passengers who arrived after me. By the time a manager intervened, it was too late to board, costing me time, money, and unnecessary frustration. The second leg of my trip (Chicago–San Francisco) raised even more serious concerns. From the outset, it was apparent that the staff—particularly two attendants—prioritized Caucasian passengers while dismissing African American and minority passengers. • When a Caucasian passenger in the exit row refused to comply with federal safety requirements, I, as a first responder, immediately offered to switch seats and assume the responsibility. My offer was blatantly ignored, and instead, a Caucasian passenger seated further up was chosen. This was discriminatory and deeply insulting, especially as I was actively de-escalating the situation that could have delayed the flight further. • During a lengthy tarmac delay of over 90 minutes, passengers were given conflicting and unreasonable instructions that created unnecessary distress and tension. • Throughout the flight, a visibly intoxicated passenger directly in front of me was disruptive, rude to others, failed to comply with seatbelt and electronic device rules, and yet faced no enforcement from the crew. In stark contrast, I was singled out for repeated compliance checks even though I was following every rule. This unequal treatment was so obvious that multiple passengers around me spoke up in my defense. This pattern of behavior demonstrated a clear lack of professionalism, disregard for passenger safety, and discriminatory treatment. I expect far better from an airline of your stature. As a paying customer subjected to this unacceptable treatment, I am formally requesting: 1. A full investigation into the conduct of the staff on both flights. 2. A written apology acknowledging the discriminatory and unprofessional behavior I endured. 3. Appropriate compensation for the distress, inconvenience, and mishandling of my travel. If this matter is not addressed promptly and thoroughly, I will have no choice but to escalate my complaint further, including filing with the U.S. Department of Transportation and sharing my experience through other channels. I trust [Airline] will take this complaint seriously and provide a timely resolution.

Check in was quick and easy during early hours. Flight was on time, and customer services was a plus.

I understand that the food on the airplane wouldn’t be fantastic. However, it wasn’t good at all. 😭

The flight was comfortable with the exit row and great service

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

1. when we went to check in, our 2 first class seats had been CANCELED and the flight was sold out. This was done without our prior knowledge. It was all we could do to restore one first class seat for my wife and I flew economy. 2, Our flight home was scheduled to leave at 10:30 pm. Due to tsunami warnings, the roads were closed and our flight status was uncertain as to whether it would leave as scheduled. It was announced that it would now leave at 11:20 pm and the roads were now open since the tsunami had come and gone. We made a mad dash to the airport and checked in. Delays were announced at 12:30 pm, 1:30 am, 2:30 am and at 3:30 am it was canceled. Since this was a flight due to natural (tsunami) causes, there was no compensation. We were told to return at 1:00 pm the next day and our baggage would be kept on the plane since the same plane was going to leave at 1:00 pm. We had to return to our hotel for the rest of the night. The same plane did not leave at 1:00 pm and our baggage was gone! All in all, it was a miserable performance by UA. Information was hard to obtain and no one knew what was going on and what was going to happen. Hundreds of passengers slept on the floor, chairs, etc. No food and no water was made available to the passengers. It was a situation where UA could care less what was going on. As a one million mile flyer, I had not experienced anything like this before and it was hugely disappointing!

Everything you need to know for your flight from Bilbao to California

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