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$556+ Cheap flights from Houston 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 9/28. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — BIO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from Houston to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from Houston (HO1) 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 September 17, 2025.

Round-trip from

$556
(lol.travel)
From Houston to Bilbao
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Find flight deals from Houston to Bilbao

Cheapest flights from Houston to Bilbao
Explore the most affordable flight options available from Houston to Bilbao. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 17, 2025.

This lol.travel deal was found by Cheapflights users on 9/16. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/284:45 pmIAH - BIO
1 stop23h 40mUnited Airlines
Tue 10/76:45 amBIO - IAH
1 stop13h 50mUnited Airlines
Deal found 9/16$556
This Cheapflightsfares deal was found by Cheapflights users on 9/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/293:35 pmIAH - BIO
1 stop23h 50mLufthansa
Tue 10/76:45 amBIO - IAH
2 stops17h 32mLufthansa
Deal found 9/15$598
This United Airlines deal was found by Cheapflights users on 9/16. 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.
Mon 9/294:45 pmIAH - BIO
1 stop23h 40mUnited Airlines
Tue 10/76:45 amBIO - IAH
2 stops21h 05mUnited Airlines
Deal found 9/16$601
This Gotogate deal was found by Cheapflights users on 9/16. 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.
Sun 9/2810:00 amIAH - BIO
2 stops23h 05mMultiple Airlines
Tue 10/76:45 amBIO - IAH
2 stops17h 32mMultiple Airlines
Deal found 9/16$604
This American Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/214:47 pmIAH - BIO
2 stops17h 08mAmerican Airlines
Wed 11/59:15 amBIO - IAH
2 stops17h 36mAmerican Airlines
Deal found 9/15$609
This United Airlines deal was found by Cheapflights users on 9/15. 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.
Tue 10/214:45 pmIAH - BIO
1 stop23h 40mUnited Airlines
Wed 11/512:50 pmBIO - IAH
1 stop32h 45mUnited Airlines
Deal found 9/15$611
This Delta deal was found by Cheapflights users on 9/15. 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.
Mon 9/296:00 amHOU - BIO
2 stops21h 25mDelta
Tue 10/76:50 amBIO - HOU
2 stops23h 10mDelta
Deal found 9/15$634
This Delta deal was found by Cheapflights users on 9/16. 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.
Sun 9/286:00 amHOU - BIO
2 stops21h 25mDelta
Tue 10/76:50 amBIO - HOU
2 stops23h 10mDelta
Deal found 9/16$685
This Delta deal was found by Cheapflights users on 9/14. 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.
Thu 10/306:44 pmHOU - BIO
2 stops15h 46mDelta
Thu 11/67:25 amBIO - HOU
2 stops22h 35mDelta
Deal found 9/14$786
This KLM deal was found by Cheapflights users on 9/15. 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.
Sat 10/252:22 pmHOU - BIO
2 stops15h 38mKLM
Sun 11/28:30 amBIO - HOU
2 stops16h 18mKLM
Deal found 9/15$959
This Ovago deal was found by Cheapflights users on 9/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/32:33 pmHOU - BIO
2 stops19h 22mIberia
Mon 10/206:45 amBIO - HOU
2 stops19h 56mIberia
Deal found 9/17$1,310
This Ovago deal was found by Cheapflights users on 9/17. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/32:33 pmHOU - BIO
2 stops15h 12mMultiple Airlines
Mon 10/206:45 amBIO - HOU
2 stops19h 56mMultiple Airlines
Deal found 9/17$1,374

Cheapflights Fare Finder

 
Customize your flight search to find flights from Houston 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 September 17, 2025.
Use the filters below to find and compare flights from Houston to Bilbao that are best for you.

Fly from

Houston

Fly to

Bilbao

Route

Depart

Return

Price

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Sun 9/28

4:45 pm-11:25 pm

1 stop23h 40m

Bilbao

Tue 10/7

6:45 am-1:18 pm

2 stops37h 33m

$557

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Mon 9/29

4:45 pm-11:25 pm

1 stop23h 40m

Bilbao

Tue 10/7

6:45 am-8:50 pm

2 stops21h 05m

$601

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Mon 9/29

4:51 pm-6:45 pm

2 stops18h 54m

Bilbao

Tue 10/7

6:45 am-5:17 pm

2 stops17h 32m

$602

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Sun 9/28

10:00 am-4:05 pm

2 stops23h 05m

Bilbao

Tue 10/7

6:45 am-5:17 pm

2 stops17h 32m

$604

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Tue 10/21

4:47 pm-4:55 pm

2 stops17h 08m

Bilbao

Wed 11/5

9:15 am-7:51 pm

2 stops17h 36m

$609

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Tue 10/21

4:45 pm-11:25 pm

1 stop23h 40m

Bilbao

Wed 11/5

12:50 pm-2:35 pm

1 stop32h 45m

$611

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Mon 9/29

6:00 am-10:25 am

2 stops21h 25m

Bilbao

Tue 10/7

6:50 am-11:00 pm

2 stops23h 10m

$634

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Sun 9/28

6:00 am-10:25 am

2 stops21h 25m

Bilbao

Tue 10/7

6:50 am-11:00 pm

2 stops23h 10m

$685

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Thu 10/30

6:44 pm-4:30 pm

2 stops15h 46m

Bilbao

Thu 11/6

7:25 am-11:00 pm

2 stops22h 35m

$786

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Sat 10/25

2:22 pm-1:00 pm

2 stops15h 38m

Bilbao

Sun 11/2

8:30 am-5:48 pm

2 stops16h 18m

$959

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Showing 1-10 of 16 results
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Best time to book a flight from Houston to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from Houston 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 Houston to Bilbao

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

Find hourly flight availability from Houston 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 September 17, 2025.

When flying from Houston to Bilbao, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 29% versus a flight in the morning.

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 September 17, 2025.
Peruse reviews from past customers who have flown with Delta and United Airlines from Houston to Bilbao to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
Delta
8.0
Very good
7,961 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!
United Airlines
7.4
Good
8,926 reviews
Delta
8.0
Very good
7,961 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Entertainment

7.9

Overall

8.0

Reviews

1 / 20
10.0
Excellent

Kim,May 2025

PIH - SLC

This trip was fine even with delay I had plenty of time to get connection flight!

Related info for your journey

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

  • What airport do you fly into for flights to Bilbao from Houston?

    Bilbao (BIO) is the airport you will fly into if you book a flight from Houston to Bilbao. You should not have trouble finding flights to Bilbao from Houston; the airport handles an average of 0 inbound flights from Houston per day. You should also have plenty of airline options to choose from since 2 airlines have flights to the Bilbao airport from Houston. It is only a 3.0 mi journey from Bilbao (BIO) to Bilbao’s city center.

  • How long is the flight from Houston to Bilbao?

    Airlines like United Airlines, Lufthansa, and Delta fly from Houston to Bilbao in about 18h 54m. The time it takes to get you to your destination can typically vary by up to 4h 46m. There are 4942 mi between Houston and Bilbao. Both multi-stop and nonstop flights can be found to your destination and back.

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

    Our cheapest airline available from Houston to Bilbao is United Airlines. Our recent data shows that you can find tickets from as low as $690 on this airline. An additional option worth looking into is Delta, starting at $868.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Houston 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 Houston to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Houston to Bilbao (average of $541). Flying from Houston to Bilbao in June is currently the most expensive (average of $1,136). 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

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Top 2 airlines flying from Houston to Bilbao

Discover the top 2 airlines that operate flights from Houston 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 September 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$690Average$1,233FlexibilityNo cancel feeOn-time69%
DeltaCheapest$868Average$955FlexibilityNo cancel feeOn-timeN/A

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