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$426+ Cheap flights from Houston to Bilbao (BIO)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/21. Fares are subject to change and may not be available on all flights or dates of travel.
HOU — BIO
Dec 4 — Dec 111
Thu 12/4
Thu 12/11
1 adult, Economy
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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 November 4, 2025.

This Finnair deal was found by Cheapflights users on 11/3. 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.
Wed 12/171:28 pmIAH - BIO
2 stops26h 47mMultiple Airlines
Fri 1/166:45 amBIO - IAH
2 stops23h 04mMultiple Airlines
Deal found 11/3$1,023
This KLM deal was found by Cheapflights users on 11/3. 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.
Wed 12/174:05 pmIAH - BIO
1 stop12h 25mKLM
Fri 1/166:50 amBIO - IAH
1 stop13h 40mKLM
Deal found 11/3$1,049
This United Airlines deal was found by Cheapflights users on 11/3. 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 11/229:43 pmIAH - BIO
2 stops35h 27mUnited Airlines
Sun 11/306:45 amBIO - IAH
2 stops33h 26mUnited Airlines
Deal found 11/3$1,096
This United Airlines deal was found by Cheapflights users on 11/4. 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.
Wed 12/174:50 pmIAH - BIO
1 stop23h 15mUnited Airlines
Wed 1/711:35 amBIO - IAH
2 stops51h 47mUnited Airlines
Deal found 11/4$1,326
This Delta deal was found by Cheapflights users on 11/3. 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 12/186:00 amHOU - BIO
2 stops22h 20mDelta
Thu 12/257:25 amBIO - HOU
2 stops18h 49mDelta
Deal found 11/3$1,496
This United Airlines deal was found by Cheapflights users on 11/4. 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 12/226:30 amIAH - BIO
2 stops33h 35mUnited Airlines
Sun 1/46:45 amBIO - IAH
2 stops17h 31mUnited Airlines
Deal found 11/4$1,881
This KLM deal was found by Cheapflights users on 11/2. 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.
Fri 11/216:48 pmHOU - BIO
2 stops14h 42mKLM
Sat 11/297:25 amBIO - HOU
2 stops17h 28mKLM
Deal found 11/2$1,940
This Cheapflightsfares deal was found by Cheapflights users on 11/4. 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 12/2212:09 pmHOU - BIO
2 stops17h 41mIberia
Sun 1/49:15 amBIO - HOU
2 stops17h 29mIberia
Deal found 11/4$2,545
This Delta deal was found by Cheapflights users on 11/3. 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 12/226:00 amHOU - BIO
2 stops22h 20mDelta
Sun 1/46:50 amBIO - HOU
2 stops23h 21mDelta
Deal found 11/3$2,632
This FlightHub deal was found by Cheapflights users on 11/2. 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.
Tue 12/309:05 amHOU - BIO
2 stops16h 25mIberia
Sat 1/109:15 amBIO - HOU
2 stops20h 31mIberia
Deal found 11/2$4,807

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 November 4, 2025.

Round-trip from

$619
(United Airlines)

One-way from

$426
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$625
From Houston to Bilbao
Search Deals
One-way flight from Houston to Bilbao
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($376 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease ($78 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 November 4, 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

Fri 2/20

4:50 pm-11:20 pm

1 stop23h 30m

Bilbao

Tue 2/24

6:45 am-6:15 pm

1 stop18h 30m

$619

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Fri 2/20

7:10 am-12:00 pm

2 stops21h 50m

Bilbao

Tue 2/24

6:45 am-6:45 pm

2 stops19h 00m

$644

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Tue 3/24

5:05 pm-11:30 am

1 stop12h 25m

Bilbao

Wed 4/15

6:50 am-1:15 pm

1 stop13h 25m

$649

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Tue 3/24

12:10 pm-12:50 pm

2 stops18h 40m

Bilbao

Wed 4/15

6:45 am-8:26 pm

2 stops20h 41m

$650

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Tue 3/24

11:55 am-12:05 pm

2 stops18h 10m

Bilbao

Wed 4/15

6:45 am-1:35 pm

1 stop13h 50m

$651

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Sat 1/10

2:55 pm-4:10 pm

1 stop18h 15m

Bilbao

Thu 1/15

5:10 pm-7:10 pm

1 stop33h 00m

$740

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Sat 1/10

2:55 pm-11:00 am

1 stop37h 05m

Bilbao

Thu 1/15

9:55 pm-7:10 pm

2 stops28h 15m

$835

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Thu 12/18

6:00 am-11:20 am

2 stops22h 20m

Bilbao

Thu 12/25

7:25 am-7:14 pm

2 stops18h 49m

$1,496

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Fri 11/21

6:48 pm-4:30 pm

2 stops14h 42m

Bilbao

Sat 11/29

7:25 am-5:53 pm

2 stops17h 28m

$1,940

HoustonBilbao

HOU - BIO

HOUBIO

Houston Hobby

Mon 12/22

12:09 pm-12:50 pm

2 stops17h 41m

Bilbao

Sun 1/4

9:15 am-7:44 pm

2 stops17h 29m

$2,545

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/3

Showing 1-10 of 19 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 November 4, 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 in the afternoon, which can drop the price by up to 15% 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 November 4, 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
7.9
Good
8,003 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,003 reviews
Delta
7.9
Good
8,003 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,002 reviews
Delta
7.9
Good
8,003 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Entertainment

7.9

Crew

8.5

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

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, Air Canada, and Delta fly from Houston to Bilbao in about 21h 50m. The time it takes to get you to your destination can typically vary by up to 1h 40m. 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 Delta. Our recent data shows that you can find tickets from as low as $372 on this airline. An additional option worth looking into is United Airlines, starting at $554. You may be able to fly from Houston to Bilbao for 65% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Houston to Bilbao one-way?

    $521 is the cheapest one-way deal found within the past few days, from KLM. You may also be able to find cheap deals on Iberia and Lufthansa, with prices starting from $645 and $863, respectively.

  • 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.

See more FAQs

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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 November 4, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$372Average$864FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$554Average$1,230FlexibilityNo cancel feeOn-time69%

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