IAH - BIO

$589 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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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
United Airlines Logo
4:45 pm - 2:45 pmIAH-BIO
15h 00m1 stop
United Airlines Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$589United Airlines
Find Deal
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
$592Lufthansa
Find Deal
Mon, Sep 29 - Tue, Oct 7
United Airlines Logo
7:20 am - 2:45 pmIAH-BIO
24h 25m2 stops
United Airlines Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$594United Airlines
Find Deal
Mon, Sep 29 - Tue, Oct 7
Lufthansa Logo
6:50 pm - 6:45 pmIAH-BIO
16h 55m2 stops
Lufthansa Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$597Lufthansa
Find Deal
Mon, Sep 29 - Tue, Oct 7
Air Canada Logo
10:00 am - 4:05 pmIAH-BIO
23h 05m2 stops
Air Canada Logo
6:45 am - 6:34 pmBIO-IAH
18h 49m2 stops
$601Air Canada
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Sun, Aug 3 - Tue, Aug 12
Delta Logo
7:10 am - 11:20 amIAH-BIO
21h 10m2 stops
Delta Logo
7:10 am - 5:34 pmBIO-IAH
17h 24m2 stops
$854Delta
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Tue, Jul 1 - Tue, Jul 8
Air Canada Logo
10:00 am - 4:05 pmIAH-BIO
23h 05m2 stops
Air Canada Logo
6:45 am - 8:42 amBIO-IAH
32h 57m2 stops
$1,026Air Canada
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Tue, Jul 1 - Tue, Jul 8
KLM Logo
3:50 pm - 4:40 pmIAH-BIO
17h 50m1 stop
KLM Logo
5:15 pm - 1:15 pmBIO-IAH
27h 00m1 stop
$1,128KLM
Find Deal
Wed, Jul 2 - Wed, Jul 16
Delta Logo
2:20 pm - 4:30 pmIAH-BIO
19h 10m2 stops
Delta Logo
7:10 am - 1:35 pmBIO-IAH
13h 25m1 stop
$1,164Delta
Find Deal
Sat, Jun 28 - Sat, Aug 2
KLM Logo
3:30 pm - 4:30 pmIAH-BIO
18h 00m1 stop
KLM Logo
5:15 pm - 1:15 pmBIO-IAH
27h 00m1 stop
$1,559KLM
Find Deal
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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 United Airlines ($589) and Lufthansa ($592).

Good to know

Cheapest flight$589
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 $1,743 for a one-way ticket and $589 for a round-trip.

  • 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?

    SkyTeam, Star Alliance, and oneworld 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 $1,396 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.

Top 3 airlines serving 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 1358 reviews
7.8Boarding
7.7Comfort
7.2Food
7.1Entertainment
8.4Crew
Airline reviews

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

10.0 ExcellentMostafa, May 2025YYC - AMS
Read more KLM reviews

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!

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

I flew premium economy and this was a good option. Although the seats didn’t recline much, I was able to get some sleep with my head propped against the window. The food was good and the entertainment was wonderful The staff were very attentive and professional

They only had vegetarian food left on the flight which I wasn’t happy about. I didn’t get any food to eat at all.

Overall very poor. Flight was disorganised, staff were rude and this is my second experience with KLM that I've had baggage go missing. It feels like, if you are an economy customer, KLM staff do not show you any care. I shall never fly with KLM again. Worst airline in Europe

Great boarding, great short flight but no entertainment whatsoever and no wifi. Prepare to disembark by a staircase.

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.

It’s been awhile since I have traveled on United. I, along with my family who were on the flight noted how smoothly everything went . Boarding, flight crew and service was excellent.

In general ok, my only issue is that they had no hot items for purchase. I had very little time in my connection due to baggage/customs/TSA, thag I barely even had a chance for a stop at the washroom and buy water, to make it to my gate when they started boarding. I had nothing to eat because the trip started early, so I was ready to purchase, and they had nothing except for dry items like snacks. I had to purchase a mediocre, overpriced cheese and fruit board, instead of at least a pizza or sliders that I was planning on getting. Other than that, it was fine. But that’s typical Air Canada, to not have enough.

How badly can you screw up baggage claim? We were told to go to baggage claim too for our bags from this flight. Another flights bags were there. They finished up. More bags from a different flight arrived. Our bags did not Finally the baggage claim belt stopped working and and are flight was still listed on the arrivals for that baggage claim 2. And then nothing It turns out that they had been delivered not only the United baggage claim but far away on a Delta baggage claim No I never told us. It was only the people looking around who had been on the flight But I’m sure there was plenty of time for the employees to raffle through the bags and steal whatever they wanted

Long wait before take off without an update for 20 minutes. Flight was good otherwise.

Flight delayed over 2 hours . I was flying bussiness never got food cause they ran out of what i wanted

Flight was 1.5 hours late to depart so changed flights to Swiss Air.

The United Airlines crew that operated this flight was subpar. They didn’t

Very small and uncomfortable seats, Hard to hear entertainment system sound. Horrible food. Staff doesn't care much about the passengers. 2nd time they didn't give me my vegetarian meal. They asked me regular food with meat. The airline and staff was from United airlines.

Checkin took along timen only.few angents available at.checkin desk. Customer support over phone no existence

At baggage claim, I was given the wrong printed ticket. The ticket belonged to another passenger for a different flight — to Zurich instead of Frankfurt (layover). I was even allowed to pass security, and when I asked the Lufthansa employee if I was on the correct flight, and why it was changed. The employee said everything was correct and I should board. When I got on the plane, there was someone in my seat, and the crew on the plane finally realized that I was on the wrong plane. When I got off the plane, nobody was willing to help, and the security refused to provide my original printed ticket. That was until I showed them that I took a photo of the ticket; once they realized I had photographic evidence, they were suddenly ready to help me. The Lufthansa employee began communicating with other airlines and found a flight that would take me to my destination via Polish Airlines. I was required to once again go through security, re-check my bag, and once again pay for my checked bag and weight overage fees. This experience was incredibly stressful and very frustrating, as you can imagine. A Lufthansa employee told me I would be eligible for a refund. Please tell me what steps I need to take in order to make that happen. Thank you!

The row of seats were so cramped it was difficult to get in and out of your seat. I even upgraded. A long flight and sad accommodations 😵‍💫 the shorter flight was very comfortable and the seating was spacious

Smooth Flight, Friendly crew, food offering on board was limited.

I bought a ticket and paid for for our luggage but I had to pay for my luggage again. I’m so disappointed! We had a 30 min delay and because of that we missed our connecting flight and were told that we would be on the next flight (9am flight ) but we were landed we were booked at 12pm flight. I had a little baby w me, it was very stressful. I begged to leave at 10 am at least. I was emailed that we get a voucher but they didn’t work when we were at a breakfast store. I’ve been always happy w Lufthansa but this time was awful.

Good service … bus transfer upon arrival from plane to terminal: atrocious!!!

helpful and friendly. The Lufthanza people I dealt with before my holiday were so unhelpful by comparison.

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

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