SAN - BIO

$350 Find Cheap Flights from San Diego to Bilbao - 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 San Diego to Bilbao departing on 11/1. 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

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Everything you should know

Cheapest round-trip
$746
Typical prices: $522-$657
United Airlines
Mon 12/7Fri 12/11
SAN - BIO • 2 stops
Cheapest one-way
$350
Delta
Sun 11/1
SAN - BIO • 2 stops
Top airlines
Cheapest • from $746 (round-trip)
Best reviews • 7.4 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
Not available
There are currently no direct flights between San Diego and Bilbao. You'll need at least 1 connection.
Insights
Insights
Insights
Insights
Top layover airports
Cheapest • Avg $1,359 (round-trip)
Shortest trip • 17h 12m (one-way)
Insights
Insights
Insights
Insights
When to travel
Cheapest • 33% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Bilbao!
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

Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
7:00 am - 4:45 pm
SAN
-
BIO
24h 45m
2 stops
United Airlines Logo
7:25 am - 3:45 pm
BIO
-
SAN
17h 20m
1 stop
$746United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
10:30 pm - 12:50 pm
SAN
-
BIO
29h 20m
2 stops
United Airlines Logo
6:45 am - 9:08 pm
BIO
-
SAN
23h 23m
2 stops
$748United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
7:00 am - 4:45 pm
SAN
-
BIO
24h 45m
2 stops
United Airlines Logo
7:25 am - 3:45 pm
BIO
-
SAN
17h 20m
1 stop
$750United Airlines
Mon, Dec 7 - Fri, Dec 11
United Airlines Logo
10:30 pm - 12:50 pm
SAN
-
BIO
29h 20m
2 stops
United Airlines Logo
6:45 am - 9:08 pm
BIO
-
SAN
23h 23m
2 stops
$753United Airlines
Mon, Aug 17 - Wed, Sep 9
United Airlines Logo
5:15 pm - 11:25 pm
SAN
-
BIO
21h 10m
1 stop
United Airlines Logo
7:15 am - 3:25 pm
BIO
-
SAN
17h 10m
1 stop
$789United Airlines
Tue, Aug 18 - Wed, Sep 9
Delta Logo
9:59 pm - 9:50 am
SAN
-
BIO
26h 51m
2 stops
Delta Logo
12:00 pm - 11:50 am
BIO
-
SAN
32h 50m
1 stop
$790Delta
Tue, Aug 18 - Tue, Sep 15
Air Canada Logo
7:00 am - 5:55 pm
SAN
-
BIO
25h 55m
2 stops
Air Canada Logo
6:50 am - 11:47 am
BIO
-
SAN
37h 57m
2 stops
$791Air Canada
Mon, Aug 17 - Fri, Sep 11
United Airlines Logo
6:20 am - 5:55 pm
SAN
-
BIO
26h 35m
2 stops
United Airlines Logo
7:15 am - 3:25 pm
BIO
-
SAN
17h 10m
1 stop
$794United Airlines
Tue, Aug 18 - Wed, Sep 9
Air Canada Logo
7:00 am - 5:55 pm
SAN
-
BIO
25h 55m
2 stops
Air Canada Logo
11:55 am - 8:36 pm
BIO
-
SAN
41h 41m
2 stops
$796Air Canada
Mon, Aug 17 - Tue, Sep 15
United Airlines Logo
5:15 pm - 11:25 pm
SAN
-
BIO
21h 10m
1 stop
United Airlines Logo
6:50 am - 7:53 pm
BIO
-
SAN
22h 03m
2 stops
$797United Airlines
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.

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

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

Flight prices are below average for this route right now.

Flights to Bilbao from San Diego usually cost between $974 and $1,484 in December.
The lowest price found in the past 5 days was $746 on United Airlines (Dec 7-Dec 11).

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 $627 (return) on average. On the other hand, the most expensive months are June and August, where the average cost of round-trip tickets is $1,347 and $1,272 respectively.

Good to know

Low season

February

Cheapest flight

$350
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 31% 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 5 days, the lowest price for a flight from San Diego to Bilbao was $350 for a one-way ticket and $746 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 $1,092 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 $1,030 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 10029 reviews
7.1Entertainment
6.6Food
7.7Boarding
7.3Comfort
8.1Crew
Airline reviews

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

10.0 ExcellentDavid, Jun 2026
SAN - LAX
Read more United Airlines reviews

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

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

Over 2.5 hour maintenance delay on first morning flight with no acknowledgement, compensation or even gesture of good will. Aircraft had overnighted at airport so issue should have been addressed prior to boarding. Over 3.5 hours before first slow and deliberate beverage service.

Complimentary light meal would be appreciated. But great flight crew service on all legs

The food was terrible this time. Otherwise pleasant, quiet, on-time.

I was in first class. The outlets at my seat did not work. The plane was shabby and run down. I had prepurchsed a day subscription for internet that was not redeemable. I had to repurchase the internet for my flight and then it didn’t work anyway. Quite disappointed in what was supposed to be the launch of a great vacation.

As usual, United scheduling is completely misleading. A 54-minute layover at O’Hare is too short to make a lot of connections, especially since the flight landed “on time” but had to wait on the taxiway 15 minutes for a gate to open up. Then it takes another 10 minutes to exit the plane before one can run to another concourse to catch a connecting flight.

Flight was ok. Unfortunately it was a Boeing 737, which is a cramped / tight airplane. I prefer the Airbus as they are a more comfortable flight experience.

We were traveling as a family of 5 and they refused to seat us together. There were entire rows open, and my 13 year old daughter had to sit alone. Ridiculous!

No in flight entertainment, gate employees were very quick and impatient, plane was uncomfortable

Definitely get premium economy on a flight this long if you can. Your legs and while body will thank you.

Lufthansa still has a good level of quality compared to US airlines, especially with respect to (1) food quality - actually tasty, (2) good French red wine - free, (3) good movie selection. Also my ticket price includes 1 free check-in luggage, while some other budget airlines sneak in an extra $150 for a checkin.

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

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.

In this flight was no good it was delay, change of door

Second time I took this flight, and they lost my luggage both times. Waiting for my suitcase now, last time it took two days to get it back.

Used to love Lufthansa, but Rowe are too close together in Economy and passengers are allowed to recline their seats so far back it is impossible for those behind them to even reach for carry-on essentials during flight - except for meal service when flight attendants ask for seat backs to be raised, we can’t sleep on planes so this flight was most uncomfortable ever! Rod Rose

There were several delays in boarding. Then our group wasn’t called. Good thing we went up to the counter to see what was going on. We boarded next and last. I felt sorry for the staff but that was our third flight to get to our destination and we were tired.

The food could have been better. Had a wide range of entertainment to choose from.

I was traveling with a young child and the flight attendants were rude and unhelpful when simple requests were made like an early cracker or cookie to help distract him while everyone else was boarding. Also, my wife received dirty looks from an attendant when she asked if she could get by while holding our crying infant. They made us feel like a burden instead of a paying customer. The food was really sub par, especially the breakfast sandwich; cold, soggy veggie sandwich with no flavor (zero seasoning or vinegar or oil) and as mentioned the bread was cold and soggy wet. Also, there seemed to be something wrong with one of the bathroom’s ventilation, the smell was terrible throughout the entire flight. In the past Lufthansa had a good reputation for customer service, they are actively destroying it with how they currently treat passengers. If our return flight is as bad we will never fly Lufthansa again.

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

Information on your arrival and departure airports