IAH - BIO

$519 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 2/20. 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, 0 bags

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

Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
4:50 pm - 11:20 pmIAH-BIO
23h 30m1 stop
United Airlines Logo
6:45 am - 6:15 pmBIO-IAH
18h 30m1 stop
$519United Airlines
Find Deal
Fri, Feb 20 - Tue, Feb 24
United Airlines Logo
4:50 pm - 11:20 pmIAH-BIO
23h 30m1 stop
United Airlines Logo
6:45 am - 8:22 pmBIO-IAH
20h 37m2 stops
$529United Airlines
Find Deal
Fri, Feb 20 - Tue, Feb 24
Air Canada Logo
7:10 am - 12:00 pmIAH-BIO
21h 50m2 stops
Air Canada Logo
6:45 am - 6:45 pmBIO-IAH
19h 00m2 stops
$545Air Canada
Find Deal
Sat, Nov 29 - Sun, Dec 7
Iberia Logo
9:28 am - 8:30 amIAH-BIO
16h 02m2 stops
Iberia Logo
9:15 am - 11:35 pmBIO-IAH
21h 20m2 stops
$554Iberia
Find Deal
Sat, Nov 29 - Sun, Dec 7
United Airlines Logo
7:25 am - 6:05 pmIAH-BIO
27h 40m2 stops
United Airlines Logo
6:45 am - 2:35 pmBIO-IAH
14h 50m1 stop
$622United Airlines
Find Deal
Tue, Mar 24 - Wed, Apr 15
Multiple Airlines Logo
5:05 pm - 5:20 pmIAH-BIO
18h 15m1 stop
Multiple Airlines Logo
5:15 pm - 1:15 pmBIO-IAH
27h 00m1 stop
$649Multiple Airlines
Find Deal
Tue, Mar 24 - Wed, Apr 15
Air Canada Logo
11:50 am - 12:50 pmIAH-BIO
19h 00m2 stops
Air Canada Logo
6:45 am - 8:26 pmBIO-IAH
20h 41m2 stops
$650Air Canada
Find Deal
Tue, Mar 24 - Wed, Apr 15
Multiple Airlines Logo
11:50 am - 12:50 pmIAH-BIO
19h 00m2 stops
Multiple Airlines Logo
6:45 am - 1:35 pmBIO-IAH
13h 50m1 stop
$651Multiple Airlines
Find Deal
Tue, Mar 17 - Thu, Apr 2
Iberia Logo
1:23 pm - 11:15 pmIAH-BIO
27h 52m2 stops
Iberia Logo
6:45 am - 10:07 pmBIO-IAH
22h 22m2 stops
$1,406Iberia
Find Deal
Sun, Dec 28 - Thu, Jan 8
Delta Logo
11:32 am - 11:30 amIAH-BIO
16h 58m2 stops
Delta Logo
7:25 am - 1:55 pmBIO-IAH
13h 30m1 stop
$3,320Delta
Find Deal

Everything you should know

Top airlines
United Airlines
Cheapest • from $519 (round-trip)
Delta
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Cheapest round-trip
$519
United Airlines
Fri 2/20Tue 2/24
IAH - BIO • 1 stop
Cheapest one-way
$897
United Airlines
Thu 12/18
IAH - BIO • 2 stops
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Bilbao!
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 United Airlines ($519) and Air Canada ($545).

Which airlines fly non-stop between Houston George Bush Intcntl Airport and Bilbao?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for round-trip flights from Houston George Bush Intcntl Airport to Bilbao.

There are 2 airlines that fly nonstop from Houston George Bush Intcntl Airport to Bilbao. They are Delta and United Airlines. The cheapest airline for this route is Delta, with the best round-trip deal found costing $372. On average, the best prices for this route can be found at Delta.

Good to know

Low seasonNovember
Cheapest flight$519
Best time to beat the crowds with an average 30% drop in price.
Most popular time to fly with an average 39% 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 $897 for a one-way ticket and $519 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, and Star Alliance are the airline alliances operating flights between Houston George Bush Airport and Bilbao, with SkyTeam being the most commonly used for this route.

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

    The two airlines most popular with KAYAK users for flights from Houston to Bilbao are Delta and United Airlines. With an average price for the route of $774 and an overall rating of 7.9, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $1,021 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.
7.9
DeltaOverall score based on 7992 reviews
8.2Boarding
7.3Food
8.5Crew
7.9Entertainment
7.9Comfort
Airline reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

8.0 ExcellentJulie, Oct 2025LAX - SFO
Read more Delta reviews

Staff were friendly and happy. Delta could make sure passengers that don't have the app know of changes. Without Kayak I would not have known about the change of gate or the delay. Kayak was faster to notify me.

They ended up paying for the bag twice, but the counter wouldn't take my baggage receipt. Left it to me to resolve. Not sure how to resolve the issue.

The customer service before board was very rude and when I expressed my concerns about making the connecting flight she laughed and told me I bought the wrong ticket. I explained once it showed the flight was delayed it no longer let me change seats or anything. I was trying to upgrade to make sure I would get to the next gate on time.

Non stop on long haul is the way to go. Great experience

The aircraft interior is old and tired on this aircraft. The entertainment system never worked despite the crews attempt to reset the system.

The flight used a B767 with a very old interior from before 2014. The entertainment system did not work at all during the flight despite attempts to reset the system. It was like they flew this route just to be competitive.

Old plane and old configuration/seats but still comfortable for a morning flight

They changed planes and the new plane couldn’t carry enough fuel to fly across the country so we had to stop in Kansas City to refuel. Flight was delayed .

Flight was too crowded and seats are too small, especially since passengrs are getting larger. Having a middle seat is ALWAYS tough! Woman on my left was large & kept creeping in to my space. Flight personnel were great! Have more savory rather than sweet snacks please.

Flight was crowded and the woman sitting on my left was large & kept crouching in to my space. You need bigger seats or smaller passengers to fit into the seats you DO have! Snack were OK. Would appreciate if airlines had more savory rather than sweet snacks, thank you!

Lately I like the planes have been exceptionally filthy. There’s lines of dust and dirt all across the ceiling in the vents, and the cracks in between the seats are literally full of food. It’s definitely not the quality of service that I was used to with United. I’m also very disappointed with the Wi-Fi! All I wanna do is knock out a few work jobs while I’m trapped in my seat And it spools so bad. They did provide me with a refund, but the process of getting that refund is so complicated. It’s unfortunate.

Crew was excellent. This was a relatively long flight though and had very little leg room, and no entertainment.

The newer screen was super cool and had the option to watch many different shows or movies. Crew was polite and helpful. However again, many children screaming bloody murder and kicking my seat, and parents doing nothing about it as usual.

Plane was crowded and even when we hit altitude, the plane was hot, not enough air flow.

Flight was delayed and missed my connection Lufthansa didn’t respond.

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.

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

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