$294 Find Cheap Flights from Portugal to Houston George Bush Airport

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to George Bush Intcntl departing on 9/12. 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 Houston George Bush Intcntl Airport

 
These are the airlines KAYAK users have selected most often from within our search results for flights to Houston, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results for flights to Houston, as well as popular online travel agencies
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Cheap Flights from Portugal to George Bush Intcntl

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portugal to George Bush Intcntl 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 Portugal to George Bush Intcntl

Fri, Sep 19 - Mon, Sep 29
Logo
10:40 am - 9:00 pmLIS-IAH
16h 20m1 stop
Logo
7:00 am - 5:50 amIAH-LIS
16h 50m1 stop
$694
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Wed, Sep 17 - Tue, Sep 23
British Airways Logo
11:05 am - 9:29 pmLIS-IAH
16h 24m1 stop
British Airways Logo
3:30 pm - 2:25 pmIAH-LIS
16h 55m1 stop
$718British Airways
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Mon, Oct 6 - Mon, Oct 20
Finnair Logo
4:30 pm - 5:41 pmLIS-IAH
31h 11m2 stops
Finnair Logo
9:00 pm - 11:10 pmIAH-LIS
20h 10m1 stop
$724Finnair
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Mon, Oct 6 - Mon, Oct 20
American Airlines Logo
7:15 am - 9:31 pmLIS-IAH
20h 16m2 stops
American Airlines Logo
3:30 pm - 5:55 pmIAH-LIS
20h 25m1 stop
$746American Airlines
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Mon, Oct 6 - Mon, Oct 20
American Airlines Logo
7:15 am - 9:26 pmLIS-IAH
20h 11m2 stops
American Airlines Logo
10:16 am - 9:05 amIAH-LIS
16h 49m2 stops
$787American Airlines
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Fri, Sep 19 - Mon, Sep 29
United Airlines Logo
5:05 am - 10:26 pmLIS-IAH
23h 21m2 stops
United Airlines Logo
11:58 am - 8:20 amIAH-LIS
14h 22m2 stops
$819United Airlines
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Wed, Sep 17 - Tue, Sep 23
Delta Logo
5:00 am - 7:46 pmLIS-IAH
20h 46m2 stops
Delta Logo
12:55 pm - 2:50 pmIAH-LIS
19h 55m2 stops
$830Delta
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Mon, Jun 23 - Mon, Jul 7
Delta Logo
11:40 am - 1:15 pmLIS-IAH
31h 35m1 stop
Delta Logo
3:30 pm - 6:40 pmIAH-LIS
21h 10m1 stop
$858Delta
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Thu, Jul 10 - Mon, Nov 10
United Airlines Logo
10:25 am - 6:51 pmLIS-IAH
14h 26m1 stop
United Airlines Logo
2:38 pm - 8:10 amIAH-LIS
11h 32m1 stop
$1,027United Airlines
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Sun, Jul 6 - Tue, Jul 15
Finnair Logo
6:35 am - 11:24 pmLIS-IAH
22h 49m2 stops
Finnair Logo
9:00 pm - 11:00 pmIAH-LIS
20h 00m1 stop
$1,485Finnair
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KAYAK's insights & trends for flights to George Bush Intcntl

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

What is the cheapest month to fly to Houston George Bush Intcntl Airport?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights to Houston George Bush Intcntl Airport, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights to Houston George Bush Intcntl Airport is April, where tickets cost $733 on average for return flights. On the other hand, the most expensive months are July and March, where the average cost of tickets from Portugal is $1,310 and $1,242 respectively. For one-way flights, the best month to travel is April with an average price of $733.

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Good to know

Low seasonJanuary
High seasonApril
Cheapest flight$294
Best time to beat the crowds with an average 4% drop in price.
Most popular time to fly and prices are also 22% lower on average.
Flight from Lisbon to Houston George Bush Airport

FAQs - booking Houston George Bush Airport flights

  • How far is Houston George Bush Intcntl Airport from central Houston?

    You’ll need to travel 16 miles to reach the Houston city center from Houston George Bush Intcntl Airport.

  • What is the cheapest day to fly to Houston?

    Based on KAYAK data, the cheapest day to fly to Houston is Tuesday where round-trip tickets can be as cheap as $758. On the other hand, the most expensive day to fly is Thursday, where round-trip prices are $1,376 on average.

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

    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 to Houston George Bush Airport.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to 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 to Houston George Bush Airport?

    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 Houston George Bush Airport with an airline and back with another airline.

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

    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 Houston George Bush Airport up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Houston George Bush Intcntl Airport?

    The cheapest time of day to fly to Houston George Bush Intcntl Airport is generally at night, when round-trip flights cost $790 on average. The most expensive time of day to fly to Houston George Bush Intcntl Airport is generally in the morning, which is peak travel time and where the average cost of a ticket is $1,023.

  • How many direct flights to Houston George Bush Intcntl Airport are there each week?

    Each week there are around 4,654 direct flights from within Portugal to Houston George Bush Intcntl Airport. The most common day for departures is Sunday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Houston George Bush Airport

  • Enter your preferred departure airport and travel dates into the search form above to unlock the latest Houston George Bush Airport flight deals.

Top airline flying from Portugal to George Bush Intcntl

 
See real verified KAYAK customer reviews for airlines flying to Houston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline from Portugal to Houston. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with to George Bush Intcntl? 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.
6.6
British AirwaysOverall score based on 7008 reviews
6.4Entertainment
6.8Boarding
6.3Food
7.6Crew
6.7Comfort
Airline reviews

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

6.0 GoodPhilip, Jun 2025LHR - BWI
Read more British Airways reviews

Better synchronizing the boarding processes. The audio announcements, the personnel and the digital signage were not saying the same thing. All confusion.

The first class seats were unusable, mine at the end of the flight, my husband's in the middle of the flight, and the one next to me was unusable either, they had to move the person to another seat.

Last minute gate change. Didn’t put our TSA global on our trip even though we asked multiple times to confirm. Did not help with food when could not eat what was served.

Our luggage didn’t arrive with us, that puts a damper on the whole trip.

The cabin was bit colder than I like but the crew members looked after us very well. They did even offer hot water bottle and hot chocolate. I cannot rate the crew enough excellent is not good enough. They really were wonderful.

Boarding is always a challenge as folks in al groups crowd around for no reason, but crew handled it well. I once again applaud the LHR ground baggage staff as they got our bags from a flight at Terminal 5A to a flight in Terminal 5C within 40 minutes...amazing!

This flight from London to Chicago was actually on an AA airline. I did book through BA but the flight was AA. Great flight, hectic in Chicago, I wouldn't choose to fly through Chicago again, but that's not the airlines fault. The flight itself was great.

Push back is not working when I complaint a male staff he told me that most of the seats are like that so we can’t do anything

Seats were way too small. I got claustrophobic waiting for trash from meal to be taken away. I couldn't move to even close my tray until trash was taken.

Was 3 hrs delayed and my poor friend I met in Barcelona was waiting at airport for 3 hrs. Dallas airport was awful

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

Information on the airport you'll fly into in Houston

Houston George Bush Airport (IAH)

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