$335 Find Cheap Flights from Portugal to Houston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Houston departing on 11/14. 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

 
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 Houston

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

Mon, Oct 6 - Mon, Oct 20
Delta Logo
5:00 am - 1:15 pmLIS-IAH
14h 15m1 stop
Delta Logo
12:55 pm - 2:50 pmIAH-LIS
19h 55m2 stops
$710Delta
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Mon, Oct 6 - Mon, Oct 20
Delta Logo
5:00 am - 1:15 pmLIS-IAH
14h 15m1 stop
Delta Logo
3:25 pm - 2:50 pmIAH-LIS
17h 25m2 stops
$711Delta
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Wed, Sep 17 - Tue, Sep 23
Delta Logo
5:00 am - 1:15 pmLIS-IAH
14h 15m1 stop
Delta Logo
12:55 pm - 8:00 amIAH-LIS
13h 05m1 stop
$715Delta
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Thu, Jul 10 - Wed, Jul 23
British Airways Logo
11:05 am - 9:41 pmLIS-IAH
16h 36m1 stop
British Airways Logo
3:30 pm - 2:05 pmIAH-LIS
16h 35m1 stop
$883British Airways
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Thu, Jul 10 - Wed, Jul 23
American Airlines Logo
11:05 am - 12:02 amLIS-IAH
18h 57m2 stops
American Airlines Logo
9:48 am - 9:05 amIAH-LIS
17h 17m2 stops
$908American Airlines
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Tue, Jul 29 - Tue, Aug 12
 Logo
10:25 am - 8:31 pmLIS-IAH
16h 06m1 stop
 Logo
11:59 am - 2:45 pmIAH-LIS
20h 46m2 stops
Wed, Aug 13 - Wed, Aug 20
 Logo
6:00 pm - 3:57 pmLIS-IAH
27h 57m1 stop
 Logo
10:00 pm - 5:30 amIAH-LIS
25h 30m2 stops
Mon, Oct 6 - Mon, Oct 20
American Airlines Logo
11:05 am - 10:14 pmLIS-HOU
17h 09m2 stops
American Airlines Logo
10:19 am - 9:05 amHOU-LIS
16h 46m2 stops
$1,020American Airlines
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Wed, Aug 13 - Wed, Aug 20
British Airways Logo
11:05 am - 9:40 pmLIS-IAH
16h 35m1 stop
British Airways Logo
9:00 pm - 11:10 pmIAH-LIS
20h 10m1 stop
$1,066British Airways
Find Deal
Tue, Jul 1 - Sat, Jul 5
United Airlines Logo
6:45 am - 5:50 pmLIS-IAH
17h 05m1 stop
United Airlines Logo
12:15 pm - 8:20 amIAH-LIS
14h 05m1 stop
$1,284United Airlines
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KAYAK's insights & trends for flights to Houston

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

Which is the cheapest airport to fly into in Houston?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Houston is Houston Hobby Airport (HOU), with an average flight price of $242.


Good to know

Cheapest flight$335
Flight from Lisbon to Houston George Bush Airport

FAQs - booking Houston flights

  • Which Houston airport is closest to central Houston?

    Out of the 2 airports in Houston, Houston Hobby Airport is the nearest to the city center (9 miles). You'll travel 16 miles to reach the center of Houston if you land in Houston George Bush Airport

  • What is the cheapest day to fly to Houston?

    Based on KAYAK data, the cheapest day to fly to Houston is Saturday where round-trip tickets can be as cheap as $792. 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?

    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.

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

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

    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 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?

    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 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?

    The cheapest time of day to fly to Houston is generally at night, when round-trip flights cost $790 on average. The most expensive time of day to fly to Houston is generally in the morning, which is peak travel time and where the average cost of a ticket is $902.

  • How many direct flights to Houston are there each week?

    Each week there are around 5,659 direct flights from within Portugal to Houston. The most common day for departures is Monday, with 15% of flights taking off on this day.

Top tips for finding cheap flights to Houston

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

Top 3 airlines serving from Portugal to Houston

 
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 Houston? 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.
7.4
United AirlinesOverall score based on 8798 reviews
7.0Entertainment
6.6Food
8.1Crew
7.3Comfort
7.7Boarding
Airline reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

2.0 MediocreJack, Jun 2025SAT - IAH
Read more United Airlines reviews

Gate agent did not hold flight for connection, provided no assistance to get new flight

I always appreciate when everything is on time! In this flight you have a short connection and it could be stressful , but is was easy and fast. They even ask people to wait so the ones that have a short connection could leave before. It was the fist time that something like this happened.

The plane pushed back from the gate on time. However, it stopped on the ramp, and we waited for over 20 minutes before the aircraft pulled back to the gate. Apparently, something of importance had to be removed from the aircraft by the gate agent. I found this to be odd. The delay was not significant, but I felt that whatever was on the aircraft that had to be taken off, should’ve been done before we pushed back from the gate.

Smooth boarding process. Early departure, smooth flight, early arrival. The entertainment package has very good recent movie options. The flight crew were friendly and professional.

My suitcase was destroyed. The top part where the handle is is completed broken. And unusable now.

Since when do I have to pay for my checked bag? I have a United Explorer mileage plus silver card and I was charged for my checked bags. This also is an international flight. So I would like an explanation to be clear before I choose an airline please?

Michael, our FA was very attentive, even finding me a chocolate brownie from economy class when the dessert selections were all dairy based. ( intolerant, not allergic so don’t usually need to order dairy free)

I had a bad experience with the security at IAH and felt like a sardine on all 4 legs of my journey.

I don’t understand the purpose of the orange “priority” tag on my bag. This tagged, my bag is last or near to the last bag to come down the carousel at IAH.

Plane 3 hours late. Missed connection. No help from gate staff. App horrible. Lost connection repeatedly. No service desk. Finally got help from young girl driving cart.

The chair cushions may need an upgrade. I have been noticing they are so worn out, thin so you’d sit in a dip 😄. Other than that, all was an enjoyable trip. Thanks AA!

I’m impressed that we were on time in Sacramento after having a late departure in Newark and our made it. The staff was friendly and warm.

5.5 hour delay with no explanation on why, along with no proactive effort to reaccomodate me.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious.

Plane, flight, crew, captain were all great. The first flight had a Chipotle box lunch...delicious. this return flight not as tasty, but filling.

So awful Unreliable Unfriendly Bad Mad Mean Smelly Hot Late Overbooked Understaffed Expensive Cramped Narcs If they were a fruit they’d be rotten durian

It’s a great flight. Service is good. Staff is awesome.

Boarding on time and fight was early but they didn't let us off the plane on time so we missed our connecting flight to Japan.

DFW-LHR Toilets not kept clean Too cramped. Aisles so narrow crew were constantly banging into people on the aisle seats. Even then, the carts used are reduced width. Other than that it was a decent flight on both legs

Eventless. It was a good flight and good crew. Can’t complaint.

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 Houston

Cabin class types available on flights to Houston

Cabin classes available on flights to Houston. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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