$483 Cheap Flights from Austin (AUS) to Bilbao (BIO)

View $483 flight on Mon, Sep 29, 2025Opens in a new window

Popular airlines from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO)

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Cheap Flights from Austin to Bilbao (AUS-BIO)

Prices were available within the past 7 days and start at $483 for one-way flights and $595 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Lufthansa
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$595 Roundtrip, found 1 day ago
$595
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $595 found 1 day ago
Iberia
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$604 Roundtrip, found 1 day ago
$604
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $604 found 1 day ago
Iberia
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$629 Roundtrip, found 1 day ago
$629
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $629 found 1 day ago
Lufthansa
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$645 Roundtrip, found 1 day ago
$645
Roundtrip
found 1 day ago
Select Lufthansa flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $645 found 1 day ago
Air Canada
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$653 Roundtrip, found 1 day ago
$653
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $653 found 1 day ago
Air Canada
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$673 Roundtrip, found 1 day ago
$673
Roundtrip
found 1 day ago
Select Air Canada flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $673 found 1 day ago
Lufthansa
Mon, Sep 1 - Wed, Sep 10
AUS
Austin
BIO
Bilbao
$675 Roundtrip, found 21 hours ago
$675
Roundtrip
found 21 hours ago
Select Lufthansa flight, departing Mon, Sep 1 from Austin to Bilbao, returning Wed, Sep 10, priced at $675 found 21 hours ago
Iberia
Mon, Sep 29 - Wed, Oct 8
AUS
Austin
BIO
Bilbao
$679 Roundtrip, found 1 day ago
$679
Roundtrip
found 1 day ago
Select Iberia flight, departing Mon, Sep 29 from Austin to Bilbao, returning Wed, Oct 8, priced at $679 found 1 day ago
British Airways
Mon, Aug 18 - Wed, Aug 27
AUS
Austin
BIO
Bilbao
$684 Roundtrip, found 2 days ago
$684
Roundtrip
found 2 days ago
Select British Airways flight, departing Mon, Aug 18 from Austin to Bilbao, returning Wed, Aug 27, priced at $684 found 2 days ago
Aer Lingus
Mon, Sep 1 - Wed, Sep 10
AUS
Austin
BIO
Bilbao
$900 Roundtrip, found 21 hours ago
$900
Roundtrip
found 21 hours ago
Select Aer Lingus flight, departing Mon, Sep 1 from Austin to Bilbao, returning Wed, Sep 10, priced at $900 found 21 hours ago
Flights from Austin (AUS) to Bilbao (BIO)
Origin airport
Austin-Bergstrom Intl.
Destination airport
Bilbao
Airlines serving
Aer Lingus, Air Canada, British Airways, Brussels Airlines, Finnair, Iberia, Lufthansa, Turkish Airlines
Roundtrip price
$595
Distance
5041 mi

Austin to Bilbao Flights

The cheapest times to fly from Austin 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 Austin to Bilbao are during the month of September. You can find some of the cheapest flights from Austin to Bilbao with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Austin to Bilbao

Sunday is one of the best days to book for cheap flights from Austin 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 Austin 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 Austin to Bilbao in 2025. You can also book with separate airlines for your outbound and return journeys, from $483 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 Austin 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 Austin 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.

 

Frequently asked questions

How much does a flight from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO) cost?
Discover the latest flight deals from AUS to BIO by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from AUS to BIO?
The cheapest flights from AUS to BIO are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from AUS to BIO?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from AUS to BIO. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO)?
There aren't any daily direct flights departing from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be cruising above the clouds in no time.
What day of the week has the most flights from AUS to BIO?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO)?
Book a flight from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO) that leaves before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO) last-minute?
Holding off until right before your break to book a flight from AUS to BIO often results in higher prices. While you may come across some last-minute offers, they're not always guaranteed. Be flexible with your travel plans for a better chance of snagging a bargain.
Is it cheaper to book an AUS to BIO flight and hotel package?
You'll generally save money by booking an AUS to BIO flight and hotel package compared to booking separately. In fact, you could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. Once you've selected your preferred accommodations and flights, consider adding extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Austin-Bergstrom Intl. Airport (AUS) to Bilbao Airport (BIO)?
In most instances, you can cancel or reschedule your AUS to BIO flight. However, additional fees may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's policies and fees on flight changes, or if you'd like more information, go to our Customer Service portal.

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*Available to One Key members.