Bilbao

$593+ 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 11/11. Fares are subject to change and may not be available on all flights or dates of travel.
AUS — BIO
août 3 — août 101
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 juillet 29, 2025.

Round-trip from

$606
(United Airlines)

Popular in

December

Cheapest in

January

Average price

$1,133
From Austin Bergstrom to Bilbao
Highest demand for flights based on searches. 1% potential increase in price ($10 potential increase over avg. RT price).
Cheapest flight prices on average. 5% potential price decrease ($56 potential savings vs. average RT price).
Average for round-trip flights in July 2025

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 juillet 29, 2025.

This FlightHub deal was found by Cheapflights users on 7/28. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/114:10 pmAUS - BIO
1 stop12h 55mLufthansa
mar. 11/256:40 amBIO - AUS
1 stop14h 35mLufthansa
Deal found 7/28$593
This Air Canada deal was found by Cheapflights users on 7/28. 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 Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/1011:30 amAUS - BIO
2 stops22h 10mAir Canada
mar. 11/256:40 amBIO - AUS
2 stops36h 34mAir Canada
Deal found 7/28$602
This Iberia deal was found by Cheapflights users on 7/28. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dim. 11/92:35 pmAUS - BIO
2 stops15h 15mIberia
ven. 11/216:45 amBIO - AUS
2 stops22h 03mIberia
Deal found 7/28$604
This United Airlines deal was found by Cheapflights users on 7/28. 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.
mer. 11/121:00 pmAUS - BIO
3 stops27h 05mUnited Airlines
ven. 11/216:40 amBIO - AUS
2 stops23h 19mUnited Airlines
Deal found 7/28$606
This Booking.com deal was found by Cheapflights users on 7/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/811:20 amAUS - BIO
2 stops23h 30mMultiple Airlines
mer. 9/176:45 amBIO - AUS
1 stop14h 35mMultiple Airlines
Deal found 7/27$649
This Delta deal was found by Cheapflights users on 7/28. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jeu. 11/132:45 pmAUS - BIO
2 stops19h 35mDelta
mar. 11/2512:15 pmBIO - AUS
2 stops19h 12mDelta
Deal found 7/28$670
This American Airlines deal was found by Cheapflights users on 7/27. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/87:20 amAUS - BIO
2 stops18h 10mAmerican Airlines
mer. 9/171:30 pmBIO - AUS
2 stops17h 08mAmerican Airlines
Deal found 7/27$684
This KLM deal was found by Cheapflights users on 7/28. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 11/124:59 pmAUS - BIO
2 stops16h 31mKLM
dim. 11/2311:55 amBIO - AUS
1 stop35h 15mKLM
Deal found 7/28$700
This Finnair deal was found by Cheapflights users on 7/28. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 8/132:33 pmAUS - BIO
2 stops25h 42mFinnair
mar. 8/196:45 amBIO - AUS
2 stops24h 10mFinnair
Deal found 7/28$718

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 juillet 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

mar. 9/30

12:17 pm-11:25 pm

2 stops28h 08m

Bilbao

mar. 10/14

6:45 am-9:05 pm

2 stops21h 20m

$606

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

lun. 9/8

11:20 am-5:50 pm

2 stops23h 30m

Bilbao

mer. 9/17

6:45 am-2:20 pm

1 stop14h 35m

$649

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

lun. 9/8

4:05 pm-10:25 pm

1 stop23h 20m

Bilbao

mer. 9/17

6:45 am-2:20 pm

1 stop14h 35m

$657

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

lun. 9/8

7:20 am-8:30 am

2 stops18h 10m

Bilbao

mer. 9/17

1:30 pm-11:38 pm

2 stops17h 08m

$684

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

mer. 8/13

2:33 pm-11:15 pm

2 stops25h 42m

Bilbao

mar. 8/19

6:45 am-11:55 pm

2 stops24h 10m

$718

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

mer. 8/13

10:00 am-6:20 pm

2 stops25h 20m

Bilbao

mar. 8/19

11:50 am-10:29 am

3 stops29h 39m

$1,043

AustinBilbao

AUS - BIO

AUSBIO

Austin Bergstrom

mar. 9/2

5:25 pm-11:25 pm

2 stops23h 00m

$1,164

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

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 month to book a flight from Austin to Bilbao?

Currently, January is the cheapest month in which you can book a flight from Austin to Bilbao (average of $541). Flying from Austin to Bilbao in June is currently the most expensive (average of $1,135). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 juillet 29, 2025.

It’s optimal to fly from Austin to Bilbao at noon. By choosing this option you can save up to 45% on the cost of your flight, compared to a flight in the evening.

How much does it cost to fly round-trip from Austin to Bilbao?

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 juillet 29, 2025.
Read through reviews of airlines operating flights from Austin to Bilbao, such as Finnair, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

Boarding

7.6

Entertainment

6.9

Comfort

7.5

Crew

8.1

Food

6.7

Overall

7.6

Reviews

1 / 20
4.0
Okay

Julia,Feb 2024

JFK - HEL

The bathroom was broken, AC wasn’t working, tv wasn’t working for half the flight

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

    Cheapflights users have booked flights from Austin to Bilbao round-trip from $606. Other airlines that can offer you cheap pricing are Lufthansa, from $657, and American Airlines, from $684. United Airlines is currently priced 40% 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.

  • What is the cheapest month to book a flight from Austin to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Austin to Bilbao (average of $541). Flying from Austin to Bilbao in June is currently the most expensive (average of $1,135). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

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 3 airlines flying from Austin to Bilbao

Discover the top 3 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 juillet 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
LufthansaCheapest$657Average$929FlexibilityNo cancel feeOn-time76%
DeltaCheapest$691Average$1,403FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$779Average$1,057FlexibilityNo cancel feeOn-time69%

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.