HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Bilbao

$778+ Cheap flights from Austin (AUS) to Bilbao (BIO)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/24. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — BIO
Nov 28 — Dec 51
Fri 11/28
Fri 12/5
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Austin to Bilbao with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Austin to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Austin (AUS) to Bilbao (BIO). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated October 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$778
(Cheapflightsfares)

Popular in

June

Cheapest in

March

Average price

$749
Provider with most accurate pricing for Austin Bergstrom-Bilbao flight deals.
Search Deals
Provider most trusted by Cheapflights users for Austin Bergstrom-Bilbao flights.
Search Deals
From Austin Bergstrom to Bilbao
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($180 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($47 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

Find flight deals from Austin to Bilbao

Cheapest flights from Austin to Bilbao
Explore the most affordable flight options available from Austin to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on October 29, 2025.

This Gotogate deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/131:05 pmAUS - BIO
2 stops22h 00mMultiple Airlines
Sat 12/207:25 amBIO - AUS
2 stops37h 50mMultiple Airlines
Deal found 10/29$989
This United Airlines deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/131:05 pmAUS - BIO
2 stops27h 15mUnited Airlines
Sat 12/2012:50 pmBIO - AUS
1 stop32h 25mUnited Airlines
Deal found 10/29$1,059
This Air France deal was found by Cheapflights users on 10/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/136:05 pmAUS - BIO
1 stop34h 15mKLM
Sat 12/206:50 amBIO - AUS
1 stop16h 20mKLM
Deal found 10/29$1,580

Cheapflights Fare Finder

 
Customize your flight search to find flights from Austin to Bilbao that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
Use the filters below to find and compare flights from Austin to Bilbao that are best for you.

Fly from

Austin

Fly to

Bilbao

Route

Depart

Return

Price

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

Fri 4/24

1:00 pm-11:25 pm

2 stops27h 25m

Bilbao

Wed 5/6

6:45 am-1:55 pm

1 stop14h 10m

$778

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

Fri 4/24

3:51 pm-11:25 pm

2 stops24h 34m

Bilbao

Wed 5/6

6:45 am-2:20 pm

1 stop14h 35m

$794

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

Fri 4/24

9:55 am-11:25 pm

2 stops30h 30m

Bilbao

Wed 5/6

6:45 am-10:29 am

3 stops34h 44m

$846

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

Fri 3/27

7:20 am-12:00 pm

2 stops22h 40m

Bilbao

Tue 3/31

6:45 am-10:29 pm

2 stops22h 44m

$871

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

Sat 12/13

1:05 pm-6:05 pm

2 stops22h 00m

Bilbao

Sat 12/20

7:25 am-2:15 pm

2 stops37h 50m

$989

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

Sat 12/13

1:05 pm-11:20 pm

2 stops27h 15m

Bilbao

Sat 12/20

12:50 pm-2:15 pm

1 stop32h 25m

$1,059

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/28

Compare providers for flights from Austin to Bilbao

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Austin to Bilbao in October.
ProviderPrice AccuracyTrust Score*
AranGrantPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Austin-Bilbao flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Austin-Bilbao flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Austin-Bilbao flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Austin-Bilbao flights, Cheapflights users trust AranGrant the most. AranGrant has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Austin-Bilbao flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Austin to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Austin with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Austin to Bilbao

What is the cheapest time of day to fly from AUS to BIO?

Find hourly flight availability from Austin to Bilbao. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated October 29, 2025.

It’s optimal to fly from Austin to Bilbao at noon. By choosing this option you can save up to 44% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Bilbao

Get insights into the airlines that provide service to Bilbao. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Bilbao. Reviews last updated October 29, 2025.
Read through reviews of airlines operating flights from Austin to Bilbao, such as Delta, KLM, and United Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Delta
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
KLM
7.7
Good
1,406 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
United Airlines
7.4
Good
9,001 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.
Lufthansa
6.8
Okay
7,538 reviews
Delta
7.9
Good
7,993 reviews

Comfort

7.9

Overall

7.9

Food

7.3

Crew

8.5

Entertainment

7.9

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Matthew,Oct 2025

GSP - ATL

This is always a full flight since it is the connecting route to primary destinations through Atlanta. That said, the crew handles the full load well. Not much more to say, it is a short flight with no in-flight services due to the length.

Related info for your journey

Find useful and relevant information for your journey from Austin to Bilbao. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Austin to Bilbao?

    For as low as $794, Lufthansa can have you in Bilbao from Austin in 24h 34m. The distance between Austin and Bilbao is about 5039 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines flying from Austin to Bilbao round-trip?

    Cheapflights users have booked flights from Austin to Bilbao round-trip from $586. Other airlines that can offer you cheap pricing are Lufthansa, from $587, and Delta, from $695. United Airlines is currently priced 36% below the average price you’ll pay for this route.

  • Can I find deals for flights from Austin to Bilbao that include hotel bookings?

    Yes. In addition to deals on Austin to Bilbao flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Austin to Bilbao?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Austin to Bilbao.

  • Can I find deals for business class flights from Austin to Bilbao?

    Yes. Cheapflights offers flight deals from Austin to Bilbao by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 4 airlines flying from Austin to Bilbao

Discover the top 4 airlines that operate flights from Austin to Bilbao. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated October 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$586Average$943FlexibilityNo cancel feeOn-time69%
LufthansaCheapest$587Average$785FlexibilityNo cancel feeOn-time76%
DeltaCheapest$695Average$1,403FlexibilityNo cancel feeOn-timeN/A
KLMCheapest$725Average$1,258FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.