$344 Find Cheap Flights from Bilbao to California

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Bilbao to California departing on 4/30. 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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Flight Deals

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$605
San Francisco
San Francisco2 stops$520
San Diego
San Diego1 stop$790
San Jose
San Jose2 stops$602
Reno
Reno2 stops$936
Sacramento
Sacramento2 stops$904
Los Angeles
Los Angeles1 stop$605
San Francisco
San Francisco2 stops$520
San Diego
San Diego1 stop$790
San Jose
San Jose2 stops$602
Reno
Reno2 stops$936
Sacramento
Sacramento2 stops$904

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

Sun, Jan 18 - Sat, Jan 31
American Airlines Logo
1:35 pm - 12:47 am
BIO
-
SFO
20h 12m2 stops
American Airlines Logo
7:00 am - 8:30 am
SFO
-
BIO
16h 30m2 stops
$520American Airlines
Thu, Jan 15 - Sun, Mar 15
American Airlines Logo
9:15 am - 10:13 pm
BIO
-
SFO
21h 58m2 stops
American Airlines Logo
8:00 am - 12:50 pm
SFO
-
BIO
20h 50m2 stops
$543American Airlines
Thu, Jan 15 - Sun, Mar 15
Delta Logo
6:50 am - 11:50 am
BIO
-
SFO
14h 00m1 stop
Delta Logo
4:40 pm - 5:20 pm
SFO
-
BIO
16h 40m1 stop
$590Delta
Wed, Jan 28 - Sun, Feb 1
United Airlines Logo
11:35 am - 7:35 pm
BIO
-
SFO
17h 00m1 stop
United Airlines Logo
11:20 pm - 10:50 am
SFO
-
BIO
26h 30m2 stops
$595United Airlines
Thu, Jan 15 - Sun, Mar 15
Delta Logo
6:50 am - 5:49 pm
BIO
-
SFO
19h 59m2 stops
Delta Logo
4:40 pm - 5:20 pm
SFO
-
BIO
16h 40m1 stop
$596Delta
Thu, Feb 5 - Sun, Feb 8
United Airlines Logo
7:40 am - 8:56 pm
BIO
-
SJC
22h 16m2 stops
United Airlines Logo
4:00 pm - 4:40 pm
SJC
-
BIO
39h 40m2 stops
$602United Airlines
Mon, Jan 12 - Mon, Jan 19
Lufthansa Logo
6:50 pm - 3:55 pm
BIO
-
SFO
30h 05m2 stops
Lufthansa Logo
2:40 pm - 4:40 pm
SFO
-
BIO
17h 00m1 stop
$605Lufthansa
Mon, Mar 2 - Thu, Mar 12
Iberia Logo
10:05 pm - 6:05 pm
BIO
-
LAX
29h 00m1 stop
Iberia Logo
8:50 pm - 10:30 pm
LAX
-
BIO
17h 40m1 stop
$605Iberia
Mon, Jan 12 - Mon, Jan 19
Lufthansa Logo
6:50 pm - 3:55 pm
BIO
-
SFO
30h 05m2 stops
Lufthansa Logo
7:00 am - 10:50 am
SFO
-
BIO
18h 50m2 stops
$608Lufthansa
Mon, Mar 2 - Thu, Mar 12
Iberia Logo
9:15 am - 7:02 pm
BIO
-
LAX
18h 47m2 stops
Iberia Logo
8:50 pm - 10:30 pm
LAX
-
BIO
17h 40m1 stop
$681Iberia
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 February, when tickets cost $626 (return) on average. On the other hand, the most expensive months are August and July, when the average cost of round-trip tickets is $1,086 and $921 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 40% 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$419
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 44% increase in price.
Flight from Bilbao to Los Angeles

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 9094 reviews
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
7.7Boarding
Airline reviews

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

6.0 GoodSue, Dec 2025
SJO - SFO
Read more United Airlines reviews

Movie selection is good. Crew did not understand mileage program and were no help. Sick later. Food?

United needs to step up their game. Delayed flight leaving Seattle, San Francisco. Older aircraft, not very comfortable.

The flight attendants were very rude, beyond comprehension. I took a business class from London to SFO for the first time on United. When I asked for a second piece of bread during dinner, the serving attendant threw a 3rd bread on my plate and said, “here. You can have this one too”! I couldn’t believe the rudeness of the attendant. Most all attendants were very rude, unhelpful, sing the food was absolutely disgusting. Never fly United internationally in business class. My flight back to SFO was a nightmare!!

Plane boarded early a quickly, was mostly full. We left close to on time. And landed early.

7 hours delayed due to operational issues on United’s end. Basically laziness.

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.

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

Information on your arrival and departure airports