IAH - BIO

$590 Find Cheap Flights from Houston George Bush Airport to Bilbao

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to Bilbao departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Bilbao

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Bilbao, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Houston to Bilbao, as well as popular online travel agencies
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Flights Deals

Cheap Flights from George Bush Intcntl to Bilbao (IAH-BIO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from George Bush Intcntl to Bilbao that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from George Bush Intcntl to Bilbao

Mon, Sep 29 - Tue, Oct 7
Lufthansa Logo
3:35 pm - 1:20 pmIAH-BIO
14h 45m1 stop
Lufthansa Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$590Lufthansa
Find Deal
Mon, Sep 29 - Tue, Oct 7
Lufthansa Logo
6:50 pm - 10:25 pmIAH-BIO
20h 35m2 stops
Lufthansa Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$598Lufthansa
Find Deal
Mon, Sep 29 - Tue, Oct 7
Air Canada Logo
10:00 am - 1:20 pmIAH-BIO
20h 20m2 stops
Air Canada Logo
6:45 am - 10:14 pmBIO-IAH
22h 29m2 stops
$600Air Canada
Find Deal
Mon, Sep 29 - Tue, Oct 7
Iberia Logo
6:35 pm - 4:55 pmIAH-BIO
15h 20m2 stops
Iberia Logo
9:35 pm - 9:06 pmBIO-IAH
30h 31m2 stops
$604Iberia
Find Deal
Mon, Sep 29 - Tue, Oct 7
Lufthansa Logo
3:35 pm - 6:45 pmIAH-BIO
20h 10m1 stop
Lufthansa Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$609Lufthansa
Find Deal
Mon, Sep 15 - Mon, Sep 22
United Airlines Logo
3:35 pm - 6:45 pmIAH-BIO
20h 10m1 stop
United Airlines Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$899United Airlines
Find Deal
Mon, Sep 15 - Mon, Sep 22
United Airlines Logo
1:51 pm - 2:45 pmIAH-BIO
17h 54m2 stops
United Airlines Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$900United Airlines
Find Deal
Fri, Aug 29 - Fri, Sep 5
Air Canada Logo
10:00 am - 11:05 amIAH-BIO
18h 05m2 stops
Air Canada Logo
6:45 am - 7:42 pmBIO-IAH
19h 57m2 stops
$985Air Canada
Find Deal
Sun, Dec 21 - Sun, Jan 11
Iberia Logo
5:16 pm - 8:50 pmIAH-BIO
44h 34m2 stops
Iberia Logo
9:35 pm - 11:34 pmBIO-IAH
32h 59m2 stops
$1,964Iberia
Find Deal
Sun, Dec 21 - Sun, Jan 11
KLM Logo
3:30 pm - 10:45 pmIAH-BIO
24h 15m1 stop
KLM Logo
7:25 am - 1:55 pmBIO-IAH
13h 30m1 stop
$3,356KLM
Find Deal
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to Bilbao flights

Get data-powered insights and trends into flights from George Bush Intcntl to Bilbao to help you find the cheapest flights, the best time to fly and much more.

Which airlines provide the cheapest flights from Houston George Bush Airport to Bilbao?

The cheapest round-trip price for the route for each airline clicked by KAYAK users in the last 72 hours.

In the past 3 days, the cheapest round-trip tickets from Houston George Bush Airport to Bilbao were found on Lufthansa ($590) and Air Canada ($600).

Good to know

Low seasonNovember
Cheapest flight$590
Best time to beat the crowds with an average 65% drop in price.
Most popular time to fly with an average 41% increase in price.
Flight from Houston George Bush Airport to Bilbao

When to book flights from George Bush Intcntl to Bilbao

Are your dates flexible? Find out the best times to travel from George Bush Intcntl to Bilbao based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking Houston George Bush Airport to Bilbao flights

  • What is the cheapest flight from Houston George Bush Intcntl Airport to Bilbao?

    In the last 3 days, the lowest price for a flight from Houston George Bush Intcntl Airport to Bilbao was $590 for a round-trip ticket.

  • Do I need a passport to fly between Houston George Bush Airport and Bilbao?

    Yes

  • Which airports will I be using when flying from Houston George Bush Airport to Bilbao?

    Houston George Bush Airport and Bilbao are both served by 1 main airport. You will leave Houston George Bush Airport from Houston George Bush Intcntl and will be arriving at Bilbao.

  • Which aircraft models fly most regularly from Houston George Bush Airport to Bilbao?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Houston George Bush Airport to Bilbao?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Houston George Bush Airport and Bilbao, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Houston to Bilbao, KLM or United Airlines?

    The two airlines most popular with KAYAK users for flights from Houston to Bilbao are KLM and United Airlines. With an average price for the route of $880 and an overall rating of 7.8, KLM is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,110 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Houston George Bush Airport to Bilbao?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Houston George Bush Airport to Bilbao.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Houston George Bush Airport to Bilbao?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Bilbao from Houston George Bush Airport is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Houston George Bush Airport to Bilbao?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Bilbao with an airline and back to Houston George Bush Airport with another airline. Booking your flights between Houston George Bush Airport and BIO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Houston George Bush Airport to Bilbao?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Bilbao from Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airlines flying from George Bush Intcntl to Bilbao

 
See real verified KAYAK customer reviews for airlines flying from Houston to Bilbao. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from George Bush Intcntl to Bilbao? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.8
KLMOverall score based on 1384 reviews
8.4Crew
7.3Food
7.8Boarding
7.1Entertainment
7.7Comfort
Airline reviews

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

6.0 GoodKathleen P, Jun 2025EDI - AMS
Read more KLM reviews

Our first flight was delayed so we missed our connecting flight. However it was easy to book a later flight on their app.

My flight was delayed by 6 hours then I missed BOTH of my connecting flights, I then had to stay in the AIRPORT at JFK because soooooo many people also suffered from missing flights and there was no hotels available. I would like to be compensated for this experience! I had to stay in the airport for over 16 hours!

Klm start boarding while somw air issue in the plan

The service was great. However the lounge only gets passing grade

Cabin crew professional, polite and friendly, boarding was seemless, but come on KLM surely you can do better than a pack of cheesy biscuits as an inflight snack

Cabin crew were excellent, very proffesional, polite and friendly, in flight snack was underwhelming, a packet of cheese biscuits, im sure KLM could run to a sandwich!

You should not have to pay for WiFi in business class

Transfer at Amsterdam airport is very convenient and the airport is easy to navigate. Boarding was also quick and easy. Cabin crew were excellent and the meals were good, although lacking in options.

Overall very positive. Boarding was quick and organized. Cabin was clean and seats were reasonably comfortable. Cabin crew was excellent and the meals provided were also of good quality

This fight left ahead of time which meant it arrived early which was great. Staff were very professional, but as with all these Short hop Flights the food was a disappointing snack There was no entertainment on this flight, but I did not expect any

the delay for 3 hours was understandable due to weather conditions but the flight should’ve provided some on flight compensations or at least provide more food.

United could have one single once of customer service. No human United employee would help me with the invalid mileage plus number, they said I had to speak with the computer.

Overall it was good. I missed my connection but I was put on another flight.

Although the flight was delayed the crew and the flight itself were very good. Couldn't fault anything and after the disappointment of being abandoned in the US by BA it was a welcome relief to travel with United

Boarding experience was smooth. Flight attendants were friendly and helpful. Entertainment system on the Houston-Edmonton flight did not function for passengers on the left side of the aisle. On the bird's eye flight from Quito to Houston, they should not serve a meal. No one needs to eat after midnight and it is disturbing for those passengers trying to sleep.

Smooth flight. Boarding was chaotic. Could not hear the gate agent over the intercom. People were lined up in the wrong lines. Groups one and two were told to board through line one and group 3 through line 2. All very confusing. Once in the air, the flight was smooth. There was no entertainment option on this aircraft, even though it was a larger aircraft.

My suitcase was completed destroyed. The top part is broken and unusable now.

We boarded but then sat there waiting on some missed connection people to get on so we sat for about 15 minutes for that. Then we sat again because the passenger manifest was wrong and they had to figure it out before we could leave. That took about another 20 minutes or so. The crew was working hard to figure it out so it’s not their fault. It ended up being a system glitch where someone was upgraded to first class while another person was also in the same seat and it just created a mess that took a little while to figure out. They literally went to every person on the plane asking their names to see who was sitting in the wrong seat. I also hate the entertainment that must be watched on your phone or tablet. Just give us setback screens. It’s so much better. Almost every Delta flight has this now and it is so nice to have them. The crew did a great job. I have no complaints from them. They were very hard working, even with the mishap and a disgruntled passenger.

My priority checked bag was not loaded on the flight. I had to sit in baggage claim in Las Vegas for 2 1/2 hours waiting for the next flight. All baggage staff were very helpful, tracking showed it as scanned for loading. Nobody told me why it wasn't on my flight.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Everything you need to know for your flight from George Bush Intcntl to Bilbao

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