SAN - BIO

$305 Find Cheap Flights from San Diego 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 Diego to Bilbao departing on 11/6. 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

KAYAK searches 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 Diego to Bilbao, 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 San Diego to Bilbao, as well as popular online travel agencies
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 22% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flight Deals
Booking Insights
Flight Deals

Cheap Flights from San Diego to Bilbao (SAN-BIO)

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

Recent round-trip flight deals from San Diego to Bilbao

Wed, Nov 5 - Wed, Nov 12
Lufthansa Logo
5:35 pm - 6:05 pmSAN-BIO
15h 30m1 stop
Lufthansa Logo
7:25 am - 3:45 pmBIO-SAN
17h 20m1 stop
$523Lufthansa
Find Deal
Wed, Nov 5 - Wed, Nov 12
United Airlines Logo
5:35 pm - 6:05 pmSAN-BIO
15h 30m1 stop
United Airlines Logo
12:50 pm - 11:38 amBIO-SAN
31h 48m2 stops
$547United Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
 Logo
1:10 pm - 9:10 pmSAN-BIO
23h 00m2 stops
 Logo
12:50 pm - 11:38 amBIO-SAN
31h 48m2 stops
Wed, Nov 19 - Thu, Nov 27
Lufthansa Logo
11:02 am - 11:05 pmSAN-BIO
27h 03m2 stops
Lufthansa Logo
6:45 am - 12:13 amBIO-SAN
26h 28m2 stops
$550Lufthansa
Find Deal
Wed, Nov 19 - Thu, Nov 27
Lufthansa Logo
11:02 am - 11:05 pmSAN-BIO
27h 03m2 stops
Lufthansa Logo
7:25 am - 3:45 pmBIO-SAN
17h 20m1 stop
$551Lufthansa
Find Deal
Wed, Nov 19 - Thu, Nov 27
United Airlines Logo
7:00 am - 12:05 pmSAN-BIO
20h 05m2 stops
United Airlines Logo
12:50 pm - 12:13 amBIO-SAN
20h 23m2 stops
$559United Airlines
Find Deal
Wed, Nov 19 - Thu, Nov 27
Lufthansa Logo
11:02 am - 11:20 pmSAN-BIO
27h 18m2 stops
Lufthansa Logo
7:25 am - 3:45 pmBIO-SAN
17h 20m1 stop
$565Lufthansa
Find Deal
Thu, Oct 23 - Thu, Oct 30
Lufthansa Logo
5:15 pm - 5:50 pmSAN-BIO
15h 35m1 stop
Lufthansa Logo
7:25 am - 4:45 pmBIO-SAN
17h 20m1 stop
$597Lufthansa
Find Deal
Thu, Oct 23 - Thu, Oct 30
United Airlines Logo
6:30 am - 2:45 pmSAN-BIO
23h 15m2 stops
United Airlines Logo
6:45 am - 12:13 amBIO-SAN
25h 28m2 stops
$605United Airlines
Find Deal
Wed, Nov 5 - Wed, Nov 12
Air Canada Logo
10:30 pm - 12:00 pmSAN-BIO
28h 30m3 stops
Air Canada Logo
12:50 pm - 11:38 amBIO-SAN
31h 48m2 stops
$637Air Canada
Find Deal

Everything you should know

Top airlines
Lufthansa
Cheapest • from $523 (round-trip)
United Airlines
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to travel
November
Cheapest • 34% price drop
November
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$523
Overall average: $683
Lufthansa
Wed 11/5Wed 11/12
SAN - BIO • 1 stop
Cheapest one-way
$305
Multiple Airlines
Thu 11/6
SAN - BIO • 3 stops
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bilbao!
Booking Insights

KAYAK's insights & trends for San Diego to Bilbao flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from San Diego 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 Diego to Bilbao is November, where tickets cost $683 (return) on average. On the other hand, the most expensive months are June and April, where the average cost of round-trip tickets is $1,643 and $1,279 respectively.

Good to know

Low seasonMarch
Cheapest flight$305
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 34% lower on average.
Flight from San Diego to Bilbao

When to book flights from San Diego to Bilbao

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

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

    In the last 3 days, the lowest price for a flight from San Diego to Bilbao was $305 for a one-way ticket and $523 for a round-trip.

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

    A passport is required to fly from San Diego to Bilbao.

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

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

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

    Star Alliance is the only airline alliance operating flights between San Diego and Bilbao.

  • Which is the best airline for flights from San Diego to Bilbao, United Airlines or Lufthansa?

    The two airlines most popular with KAYAK users for flights from San Diego to Bilbao are United Airlines and Lufthansa. With an average price for the route of $1,133 and an overall rating of 7.4, United Airlines is the most popular choice. Lufthansa is also a great choice for the route, with an average price of $1,171 and an overall rating of 6.8.

  • How does KAYAK find such low prices on flights from San Diego 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 Diego to Bilbao.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from San Diego 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 Diego 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 Diego with another airline. Booking your flights between San Diego 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 Diego 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 Diego 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 San Diego to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from San Diego 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 Diego 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.
7.4
United AirlinesOverall score based on 8943 reviews
7.7Boarding
7.3Comfort
8.1Crew
6.6Food
7.1Entertainment
Airline reviews

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

2.0 MediocreMartin, Aug 2025SFO - YVR
Read more United Airlines reviews

From the first moment you interact with United Airlines, you can expect nothing less but extreme frustration. The baggage handler at the bag drop seems completely unbothered by the presence of customers waiting in line. No help was extended to load the baggage whatsoever. And if any of your bags is overweight by 0.01 pound they will make you re-distribute everything in your suitcase just to play power trip. When it was time to board no help was extended to customers to locate their seats. Moreover. It was a chaotic mess at the gate when it was unclear who should board first and everyone just bunched up, trying to get on the plane. I am sure the crew was doing their best to perform their jobs while being paid their wages however it shouldn’t be that hard to smile once or twice when you’re in the business if serving customers. It is a shame for the United States of America to have a flagship carrier of such low caliber. Our flight was also delayed by about an hour and a half due to further delays prior to our inbound flight. Being someone who has travelled for both business and leisure in Asia, Europe, and South America I have never experienced such poor quality of service.

I understand stuff happens, but plane failures are likely due to lack of maintenance. Additionally, air conditioning wasn't working, no snack/drink service, no WiFi. Fortunately, the crew was communicative and light-hearted. United grabbed another plane and we were able to get to our destination.

The pilots were late and it made us 1 hour late. The meat was tough and bok choy was also tough.

Stuck on tarmac for two hours plus a 5.5 hour flight. Rude flight attendant. And no meals, not even for purchase!

I learned that seating towards the end of plane that a line forms for the restroom and people use your chair as a hand railing, bumping your seat consistently. I was seated in the aisle. I think that next time if I am towards the back row I would want to sit in the middle or window seat.

The best airline I have ever travel , really good customer service, attention and service !!

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

Not a great experience. We paid for the upgrade for premium economy seats and seated ourselves in very comfortable seats. Someone came along with the same seat on their boarding pass. The aircraft had been changed and as a result we were booted out and sent further back to small uncomfortable seats. After complaining we were moved to emergency row seats, which gave us more leg room but the seats don’t recline. For people in our 70’s we found having to sit upright from California to NJ very uncomfortable. Not sure why they chose to move senior citizens instead of the two people that were allowed to take the more comfortable seats. Not happy.

Everything was great. Only thing that could’ve made it better was buy on board options for hot food, but the snacks were decent. The flight attendants were great. I had no complaints. I was able to make it to my destination safely

Boarded plane and then delayed 1.5 hours while on the plane

The food could be better, more snacks. And have some plugs to chargue the phone.

Everything was really great just The aircraft was too old and sounded it will break during takeoff

Extremely pleased with the crew. Best flight attendants ever! Very friendly, genuinely caring and attentive.

Best flight attendants ever! Very customer and service oriented, courteous, professional and helpful.

Cheapest airlines I have ever been on. I got downgraded and never got on united. I got rerouted through Vancouver onto jetwesf

It was good although we could not land in Munich due to weather and we had to go to Stuttgart. Missed our second flight. They did get us on another flight but the seats where not the ones I paid for in the flight that we missed.

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

At baggage claim, I was given the wrong printed ticket. The ticket belonged to another passenger for a different flight — to Zurich instead of Frankfurt (layover). I was even allowed to pass security, and when I asked the Lufthansa employee if I was on the correct flight, and why it was changed. The employee said everything was correct and I should board. When I got on the plane, there was someone in my seat, and the crew on the plane finally realized that I was on the wrong plane. When I got off the plane, nobody was willing to help, and the security refused to provide my original printed ticket. That was until I showed them that I took a photo of the ticket; once they realized I had photographic evidence, they were suddenly ready to help me. The Lufthansa employee began communicating with other airlines and found a flight that would take me to my destination via Polish Airlines. I was required to once again go through security, re-check my bag, and once again pay for my checked bag and weight overage fees. This experience was incredibly stressful and very frustrating, as you can imagine. A Lufthansa employee told me I would be eligible for a refund. Please tell me what steps I need to take in order to make that happen. Thank you!

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

Everything you need to know for your flight from San Diego to Bilbao

Information on your arrival and departure airports

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.