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$556+ Cheap flights from George Bush Intcntl (IAH) 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.
IAH — BIO
Oct 17 — Oct 241
Fri 10/17
Fri 10/24
1 adult, Economy
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Cheap flight deals from George Bush Intcntl to Bilbao

Discover tips and strategies to find the most affordable flight options for your journey from George Bush Intcntl (IAH) 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)

Popular in

June

Cheapest in

November

Average price

$1,109
From Houston George Bush Intcntl to Bilbao
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Highest demand for flights based on searches. 32% potential increase in price ($501 potential increase over avg. RT price).
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Cheapest flight prices on average. 7% potential price decrease ($78 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from George Bush Intcntl to Bilbao

Cheapest flights from George Bush Intcntl to Bilbao
Explore the most affordable flight options available from George Bush Intcntl 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

Cheapflights Fare Finder

 
Customize your flight search to find flights from George Bush Intcntl 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 George Bush Intcntl Airport to Bilbao that are best for you.

Fly from

George Bush Intcntl

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

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Fri 12/19

8:51 pm-2:35 pm

3 stops58h 44m

$763

HoustonBilbao

IAH - BIO

IAHBIO

Houston George Bush Intcntl

Fri 12/19

4:30 pm-11:20 pm

1 stop23h 50m

$1,065

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/17

Best time to book a flight from George Bush Intcntl to Bilbao

Have a flexible travel schedule? Discover the best time to fly to Bilbao from George Bush Intcntl 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 George Bush Intcntl Airport to Bilbao

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

Find hourly flight availability from George Bush Intcntl 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.

It’s typically best to fly out from Houston George Bush Intcntl Airport to Bilbao at noon. Doing so could potentially save you 1% on the flight price compared to flying in the morning, which is usually more expensive.

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.
Read reviews from past customers who have flown United Airlines from Houston George Bush Intcntl Airport to Bilbao. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.
United Airlines
7.4
Good
8,926 reviews
United Airlines
7.4
Good
8,926 reviews

Boarding

7.7

Overall

7.4

Comfort

7.3

Crew

8.1

Entertainment

7.1

Food

6.6

Reviews

1 / 20
10.0
Excellent

Julia,Sep 2025

BUF - DEN

The staff were amazing, from check in to boarding and on the flight. The range of entertainment options were really good as well.

Related info for your journey

Find useful and relevant information for your journey from George Bush Intcntl 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 George Bush Intcntl?

    For a flight from Houston George Bush Intcntl to Bilbao, you will be flying into Bilbao. Bilbao (BIO) is just 3.0 mi from the center of the city. Bilbao is the only Bilbao airport and it handles 0 inbound flights from Houston George Bush Intcntl per day. 1 airline has flights to Bilbao from Houston George Bush Intcntl on a regular basis.

  • How long is the flight from Houston George Bush Intcntl Airport to Bilbao?

    Airlines like United Airlines and Lufthansa fly from Houston George Bush Intcntl Airport to Bilbao in about 18h 54m. The time it takes to get you to your destination can typically vary by up to 4h 46m. Airlines will cover a distance of 4942 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Houston George Bush Intcntl Airport to Bilbao round-trip?

    Our cheapest airline available from Houston George Bush Intcntl Airport to Bilbao is United Airlines. Our recent data shows that you can find tickets from as low as $690 on this airline. Users have found that United Airlines is 35% cheaper than the other options available to this destination.

  • Can I find deals for flights from George Bush Intcntl to Bilbao that include hotel bookings?

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

  • How can I find direct flights from George Bush Intcntl to Bilbao?

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

  • Can I find deals for business class flights from George Bush Intcntl to Bilbao?

    Yes. Cheapflights offers flight deals from George Bush Intcntl 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 George Bush Intcntl Airport to Bilbao?

    Currently, January is the cheapest month in which you can book a flight from Houston George Bush Intcntl Airport to Bilbao (average of $541). Flying from Houston George Bush Intcntl Airport 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

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Alternative routes for George Bush Intcntl to Bilbao

See prices for flight routes from nearby airports that may be better suited for you.
Hobby to Bilbao flights
George Bush Intcntl to San Sebastian flights

Top airline flying from George Bush Intcntl to Bilbao

Discover the top airline that operate flights from George Bush Intcntl 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$1,021FlexibilityNo cancel feeOn-time69%

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