$380 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 10/7. 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

Wed, Nov 12 - Mon, Nov 17
Logo
10:10 pm - 9:06 pmLIS-IAH
52h 56m2 stops
Logo
6:00 am - 5:25 amIAH-LIS
17h 25m1 stop
$614
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Thu, Oct 2 - Wed, Oct 15
Logo
5:55 am - 8:24 amLIS-IAH
32h 29m2 stops
Logo
12:58 pm - 5:30 amIAH-LIS
34h 32m1 stop
$636
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Thu, Oct 9 - Thu, Oct 16
Logo
6:40 am - 12:17 amLIS-IAH
23h 37m2 stops
Logo
12:58 pm - 5:30 amIAH-LIS
34h 32m1 stop
$676
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Fri, Sep 12 - Thu, Sep 25
Logo
5:55 pm - 11:42 amLIS-IAH
23h 47m1 stop
Logo
12:58 pm - 7:50 pmIAH-LIS
48h 52m2 stops
$679
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Thu, Oct 9 - Thu, Oct 16
Delta Logo
5:00 am - 5:59 pmLIS-IAH
18h 59m2 stops
Delta Logo
3:10 pm - 2:50 pmIAH-LIS
17h 40m2 stops
$786Delta
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Thu, Oct 2 - Wed, Oct 15
Delta Logo
5:00 am - 5:34 pmLIS-IAH
18h 34m2 stops
Delta Logo
12:55 pm - 2:50 pmIAH-LIS
19h 55m2 stops
$792Delta
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Thu, Oct 9 - Wed, Oct 15
American Airlines Logo
7:20 am - 9:51 pmLIS-IAH
20h 31m2 stops
American Airlines Logo
10:52 am - 9:05 amIAH-LIS
16h 13m2 stops
$817American Airlines
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Thu, Oct 9 - Fri, Oct 17
American Airlines Logo
7:20 am - 9:55 pmLIS-IAH
20h 35m2 stops
American Airlines Logo
7:17 pm - 6:05 pmIAH-LIS
16h 48m2 stops
$821American Airlines
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Fri, Oct 10 - Wed, Oct 15
Iberia Logo
8:25 am - 11:43 pmLIS-IAH
21h 18m2 stops
Iberia Logo
6:23 pm - 11:25 pmIAH-LIS
23h 02m2 stops
$853Iberia
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Sun, Aug 24 - Sat, Sep 6
Lufthansa Logo
6:40 am - 1:35 pmLIS-IAH
36h 55m1 stop
Lufthansa Logo
3:35 pm - 10:05 pmIAH-LIS
24h 30m1 stop
$855Lufthansa
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Booking Insights

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 $1,246 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 seasonMarch
Cheapest flight$380
Best time to beat the crowds but there is an average 35% increase in price.
Most popular time to fly and prices are also 21% 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.

Reviews of the 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 7217 reviews
6.7Comfort
6.9Boarding
7.6Crew
6.4Entertainment
6.3Food
Airline reviews

Excellent everywhere but Philly, the most rotten airport in the world.

10.0 ExcellentAnonymous, Jul 2025LHR - PHL
Read more British Airways reviews

Excellent everywhere but Philly, the most rotten airport in the world.

Check in was not the greatest as had to talk to an agent to clarify things and then he transferred us to another agent who had difficulty processing my credit card as there was a system glitch and not a card error.

I was put into business class. Wow! My flight attendant was great! The food amazing’

The gate at London Gatwick had confusing signs for the different zones and the staff seemed harried because people didn't know when it was their turn to come to the desk. Plus, with there were too many carry-on bag travelers, myself included. The charge scheme for checking bags is frustrating. If you travel light, you want the freedom to leave as soon as you deplane. When you are forced to gate-check your bag simply because the flight is fully booked, you lose whatever time you'd hoped to save because you're still stuck waiting for your bag to come off the conveyor belt.

Safe arrival. Improvement on Time efficiency Effective Communication will be great.

Not so good with their baggage handling as they damaged one of my check in luggage

A good flight back to Tampa and thankfully although we had a 90 minute delay because of thunder storms from Charlotte to bottom iof Florida, it was a prudent to avoid these for a comfortable flight as opposed to being tossed around with turbulence.

All went well on the flight, not happy of course with having to pay for a seat and in hold luggage of £50

They removed our booking without telling us. Cost us thousands to book last minute

The decided to just remove our booking without telling us. It ended up costing us thousands

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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