$85 Cheap Flights from Santander (SDR) to Bilbao (BIO)

View $85 flight on Wed, Dec 17, 2025Opens in a new window

Popular airlines from Santander (SDR) to Bilbao Airport (BIO)

Cheap Flights from Santander to Bilbao (SDR-BIO)

Prices were available within the past 7 days and start at $85 for one-way flights and $160 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$160 Roundtrip, found 9 hours ago
$160
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $160 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$169 Roundtrip, found 9 hours ago
$169
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $169 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$185 Roundtrip, found 9 hours ago
$185
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $185 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$196 Roundtrip, found 9 hours ago
$196
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $196 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$210 Roundtrip, found 9 hours ago
$210
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $210 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$219 Roundtrip, found 9 hours ago
$219
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $219 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$232 Roundtrip, found 9 hours ago
$232
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $232 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$237 Roundtrip, found 9 hours ago
$237
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $237 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$241 Roundtrip, found 9 hours ago
$241
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $241 found 9 hours ago
Iberia
Thu, Dec 4 - Thu, Dec 11
SDR
Santander
BIO
Bilbao
$244 Roundtrip, found 9 hours ago
$244
Roundtrip
found 9 hours ago
Select Iberia flight, departing Thu, Dec 4 from Santander to Bilbao, returning Thu, Dec 11, priced at $244 found 9 hours ago

Frequently asked questions

How much does a flight from Santander Airport (SDR) to Bilbao Airport (BIO) cost?
Secure a cheap one-way flight from $85 or cheap return flight from $160 from Santander Airport (SDR) to Bilbao Airport (BIO) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from Santander Airport (SDR) to Bilbao Airport (BIO)?
The cheapest month to fly from SDR to BIO is December, when demand is low. Off-peak months are typically when airlines offer better prices between these airports.
What is the cheapest airline that flies from Santander Airport (SDR) to Bilbao Airport (BIO)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SDR to BIO. Then, sort your results by "Price (lowest to highest)" to snag a good deal.
How many flights per day from Santander Airport (SDR) to Bilbao Airport (BIO)?
There are no daily nonstop flights from Santander Airport (SDR) to Bilbao Airport (BIO). But you can opt for flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be on your way in no time.
What day of the week has the most flights from SDR to BIO?
Usually you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* But this can change based on the time of year, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Santander Airport (SDR) to Bilbao Airport (BIO)?
To avoid possible delays on the Santander Airport (SDR) to Bilbao Airport (BIO) route, aim to fly before 3 PM. Departures after this hour are 22% more likely to be canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Santander Airport (SDR) to Bilbao Airport (BIO) last-minute?
Booking your plane ticket from SDR to BIO right before your trip is usually more expensive. However, if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a SDR to BIO flight and hotel package?
You'll typically save money by securing a SDR to BIO flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've chosen your ideal accommodations and flights, consider adding extras such as car rentals, activities and tours.
Can I cancel or change the date of my flight from Santander Airport (SDR) to Bilbao Airport (BIO)?
Typically, you're able to cancel or reschedule your SDR to BIO flight. However, additional fees may apply, especially if you made your booking over 24 hours ago. Double-check your itinerary for the airline's fees and guidelines on flight changes, or if you want further information, visit our Customer Service portal.

Travel information

Origin airport
Santander
Destination airport
Bilbao
Airlines serving
Iberia
Roundtrip price
$160
Distance
46 mi

Book with confidence

Santander to Bilbao Flights

The cheapest times to fly from Santander to Bilbao

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Santander to Bilbao are during the month of December. You can find some of the cheapest flights from Santander to Bilbao with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Santander to Bilbao

Sunday is one of the best days to book for cheap flights from Santander to Bilbao: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Santander to Bilbao

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Santander to Bilbao in 2025. You can also book with separate airlines for your outbound and return journeys, from $85 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Santander to Bilbao flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Santander to Bilbao airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Santander to Bilbao Flights

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*Available to One Key members.