$399 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 9/2. 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$653
San Francisco
San Francisco2 stops$653
San Diego
San Diego1 stop$868
San Jose
San Jose2 stops$838
Los Angeles
Los Angeles1 stop$653
San Francisco
San Francisco2 stops$653
San Diego
San Diego1 stop$868
San Jose
San Jose2 stops$838

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 6 - Tue, Oct 27
American Airlines Logo
1:30 pm - 12:43 am
BIO
-
SFO
20h 13m
2 stops
American Airlines Logo
6:36 am - 8:30 am
SFO
-
BIO
17h 54m
2 stops
$653American Airlines
Fri, May 15 - Sat, May 23
LEVEL Logo
10:50 am - 6:10 pm
BIO
-
LAX
16h 20m
1 stop
LEVEL Logo
8:55 pm - 5:35 pm
LAX
-
BIO
35h 40m
1 stop
$653LEVEL
Fri, May 22 - Sat, May 30
LEVEL Logo
10:50 pm - 7:10 pm
BIO
-
LAX
29h 20m
1 stop
LEVEL Logo
8:55 pm - 8:15 am
LAX
-
BIO
26h 20m
1 stop
$655LEVEL
Fri, Sep 11 - Sun, Sep 27
American Airlines Logo
1:30 pm - 12:39 am
BIO
-
SFO
20h 09m
2 stops
American Airlines Logo
1:29 pm - 4:55 pm
SFO
-
BIO
18h 26m
2 stops
$663American Airlines
Thu, Sep 17 - Sun, Sep 20
Iberia Logo
6:45 am - 4:20 pm
BIO
-
SFO
18h 35m
1 stop
Iberia Logo
1:29 pm - 10:05 pm
SFO
-
BIO
23h 36m
2 stops
$668Iberia
Tue, Oct 6 - Tue, Oct 27
Lufthansa Logo
6:50 am - 12:40 pm
BIO
-
SFO
14h 50m
1 stop
Lufthansa Logo
10:40 pm - 11:05 pm
SFO
-
BIO
16h 25m
1 stop
$686Lufthansa
Tue, Oct 6 - Tue, Oct 27
Lufthansa Logo
6:50 am - 12:40 pm
BIO
-
SFO
14h 50m
1 stop
Lufthansa Logo
10:40 pm - 11:05 pm
SFO
-
BIO
16h 25m
1 stop
$693Lufthansa
Fri, May 22 - Sat, May 30
Iberia Logo
10:50 pm - 7:10 pm
BIO
-
LAX
29h 20m
1 stop
Iberia Logo
8:55 pm - 12:45 pm
LAX
-
BIO
30h 50m
1 stop
$697Iberia
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
6:50 am - 7:50 pm
BIO
-
SFO
22h 00m
1 stop
United Airlines Logo
11:59 pm - 10:45 am
SFO
-
BIO
25h 46m
2 stops
$719United Airlines
Thu, Sep 10 - Mon, Sep 14
United Airlines Logo
6:50 am - 10:20 am
BIO
-
SFO
36h 30m
2 stops
United Airlines Logo
11:30 pm - 10:45 am
SFO
-
BIO
26h 15m
2 stops
$721United 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 May.

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 $504 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 3 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 25 weeks before departure.

Find deals

Good to know

Low seasonJanuary
Cheapest flight$399
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 18% 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 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 9679 reviews
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
7.1Entertainment
Airline reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

6.0 GoodAnonymous, Apr 2026
HND - SFO
Read more United Airlines reviews

Flew steerage class. Short on leg room unless you pay more. No window unless you pay more. Etc. United is trying to squeeze every cent from you. It doesn’t make for any loyalty.

Outstanding service, efficient & friendly crew, flight was safe, comfortable & on time

Outstanding service, great food, friendly & efficient crew, safe & comfortable flight

Staff were not attentive, wifi did not work, cut my head in the bathroom due to the position of the soap on the sink, had blood running down my face, told staff, they had no expression no sympathy, didn't even say "sorry", they said "oh we will have a look at that" about 10 mins later the purser brought me a bandaid, still no sorry.... Shocking

The crew was great. Very friendly and responsive. The plane was old, small and tight. We ran out of overhead space and I had to check. Middle seat was particularly tight.

The flight was delayed from take off because only one runway was operational in San Francisco.

Several missed and almost missed connections. It felt like everything was being patched together last minute without enough resources and it ended up being an extremely stressful experience that basically ruined our weekend on the west coast. What a waste.

Dinner was good, but the breakfast served in the morning was horrible.

Packed in plane small uncomfortable seats elbow to elbow nobody wants to be in that situation for the money they paid

Checking in united could not figure out my star alliance gold. Baggage did not get marked priority and didn't receive boarding passes. When got to SFO lounge personal fixed everything Immediately

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

Information on your arrival and departure airports

Bilbao (BIO)