$396 Find Cheap Flights from Bilbao to California - Compare and Save

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 9/29. 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$719
San Francisco
San Francisco2 stops$540
San Diego
San Diego2 stops$877
San Jose
San Jose2 stops$607
Reno
Reno2 stops$1,424
Los Angeles
Los Angeles1 stop$719
San Francisco
San Francisco2 stops$540
San Diego
San Diego2 stops$877
San Jose
San Jose2 stops$607
Reno
Reno2 stops$1,424

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

Tue, Oct 27 - Wed, Nov 4
American Airlines Logo
9:15 am - 9:26 pm
BIO
-
SFO
20h 11m
2 stops
American Airlines Logo
9:04 am - 4:55 pm
SFO
-
BIO
22h 51m
2 stops
$540American Airlines
Wed, Sep 9 - Sun, Sep 13
Iberia Logo
6:45 am - 9:52 pm
BIO
-
SFO
24h 07m
2 stops
Iberia Logo
5:55 pm - 8:50 pm
SFO
-
BIO
17h 55m
1 stop
$592Iberia
Thu, Sep 17 - Mon, Sep 21
Iberia Logo
9:15 am - 10:01 pm
BIO
-
SJC
21h 46m
2 stops
Iberia Logo
6:00 am - 8:30 am
SJC
-
BIO
41h 30m
2 stops
$607Iberia
Tue, Oct 27 - Wed, Nov 4
Multiple Airlines Logo
11:55 am - 12:45 pm
BIO
-
SFO
32h 50m
1 stop
Multiple Airlines Logo
3:40 pm - 10:30 pm
SFO
-
BIO
21h 50m
1 stop
$622Multiple Airlines
Tue, Oct 27 - Wed, Nov 4
KLM Logo
11:55 am - 12:45 pm
BIO
-
SFO
32h 50m
1 stop
KLM Logo
3:00 pm - 4:30 pm
SFO
-
BIO
16h 30m
2 stops
$627KLM
Thu, Sep 17 - Mon, Sep 21
United Airlines Logo
6:50 am - 8:57 pm
BIO
-
SJC
23h 07m
2 stops
United Airlines Logo
6:37 pm - 10:45 am
SJC
-
BIO
31h 08m
2 stops
$719United Airlines
Sat, Nov 7 - Tue, Nov 24
Royal Air Maroc Logo
7:45 pm - 7:20 am
BIO
-
LAX
20h 35m
1 stop
Royal Air Maroc Logo
9:20 am - 6:45 pm
LAX
-
BIO
24h 25m
1 stop
$719Royal Air Maroc
Tue, Sep 8 - Wed, Sep 16
Multiple Airlines Logo
7:15 pm - 4:30 pm
BIO
-
LAX
30h 15m
2 stops
Multiple Airlines Logo
8:15 am - 10:05 pm
LAX
-
BIO
28h 50m
2 stops
$739Multiple Airlines
Tue, Sep 8 - Wed, Sep 16
KLM Logo
6:45 am - 11:50 am
BIO
-
LAX
14h 05m
1 stop
KLM Logo
6:25 pm - 10:00 pm
LAX
-
BIO
18h 35m
1 stop
$742KLM
Thu, Sep 17 - Mon, Sep 21
United Airlines Logo
2:00 pm - 10:59 pm
BIO
-
ONT
17h 59m
2 stops
United Airlines Logo
1:18 pm - 10:45 am
ONT
-
BIO
36h 27m
2 stops
$868United Airlines
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.

How much is a round-trip flight from Bilbao to California?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Bilbao to California departing in November.

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 July, when tickets cost $265 (return) on average. On the other hand, the most expensive months are January and June, when the average cost of round-trip tickets is $519 and $516 respectively.

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 5 weeks before departure, which saves you about 33% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$396
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly with an average 24% 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.

Reviews of the top airlines 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.
7.8
KLMOverall score based on 1530 reviews
7.8Boarding
7.7Comfort
7.3Food
8.4Crew
7.2Entertainment
Airline reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

8.0 ExcellentAnonymous, Jun 2026
LHR - AMS
Read more KLM reviews

The flight was 45 mins late leaving, we sat without a/c for some of this, 2nd Meal was a slice of pizza. Movies were good.

Brand new plane lots of room the snack was very flavourful and enjoyable

There were no charge points for phones on the economy seats. The seats were comfortable overall. Food was okay.. flight was on time

Crew is not the cheerful type. very slow meal service (this is their style as have flown this many times)

Delay and had to run between flight to get my connection due to this delay but besides that the overall experience was ok. I arrived with just an hour of delay.

At the airport, terrible, I do not want to even remember it. It was too humiliating for a business class passenger.

Couldn’t get boarding pass in SLC even with help from a redcoat, so had to find a desk in AMS to get boarding pass. Technical problems so not sure why. Very inconvenient. The KLM app is not as user friendly as most apps. Also had to wait almost an hour on the tarmac for a fuel truck, which caused us to miss a connecting bus in LUX.

The immigration hall in Amsterdam was understaffed, so passport checking was slower than it should be for a major airport. They need to get the automatic readers up and running for non EU passport holders. Waiting in line after a long flight feels a bit abusive.

Over 1 Hr delay. No APU so no AC on ground. Plane was hot during boarding and then they closed the doors over 20 minutes before engine start so interior of plane was steamy hot and stuffy. Could have been helped by opening doors until ready to depart.

Ad experience - been flying many years with them but they are losing out to other carriers with their service and bagage / seating policy. My 2 12-yo kids were not placed with the parent. Absurdity.

The flight got delayed. They forgot to bring the drinks when I asked for it. The toilet is messy.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

Service was professional and quick. Premium economy seat was comfortable given the class

Like: departed and arrived on time. Unlike: Food options for purchase allways bad, 1 of 2 of the crew members not very friendly at all. Seats and leg room aweful. At this point I am thinking on switching to AA.

The staff was extremely helpful and friendly at all times! They went above and beyond to get us into an earlier flight in San Diego to make our connection in SFO possible, because our original flight did actually not make it! I did so much appreciate the UA team and how they made this possible. We also didn’t have seats together on the long flight to Singapore, but they found us seats together last moment with no additional cost! Nobody sat next to us, so that we were able to sleep! Thanks to UA for improving their service and Underpricer for booking this trip! Please be careful: 1,5 hrs for transfer in San Francisco might not be enough time in the future

Crew was great! Good meals. Had room to stretch out

Packed flight, which makes it tough on crew and boarding staff (and the customers of course). But this was great boarding, clear instructions, etc. Traveling on the weekends are always fraught with danger as you have families and less frequent flyers thus more confusion. But this flight went as planned.

Destroyed my suitcase. Tired of talking about it. Cancelling my unite mileage plus account.

New plane was lovely. Crew customer service is always lax but expected. Kraft on time and arrived safely.

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

Information on your arrival and departure airports