$380 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 10/15. 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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Flight Deals

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

Fri, Nov 14 - Sat, Nov 15
Multiple Airlines Logo
7:05 am - 11:13 pmLIS-IAH
22h 08m2 stops
Multiple Airlines Logo
7:00 am - 11:40 amIAH-LIS
22h 40m2 stops
$702Multiple Airlines
Find Deal
Fri, Nov 14 - Sat, Nov 15
Multiple Airlines Logo
4:40 pm - 8:32 amLIS-IAH
21h 52m1 stop
Multiple Airlines Logo
11:25 am - 11:40 amIAH-LIS
18h 15m2 stops
$705Multiple Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 11
American Airlines Logo
11:15 am - 9:28 pmLIS-IAH
16h 13m1 stop
American Airlines Logo
3:00 pm - 2:45 pmIAH-LIS
17h 45m2 stops
$724American Airlines
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Tue, Dec 2 - Mon, Dec 8
British Airways Logo
11:05 am - 9:30 pmLIS-IAH
16h 25m1 stop
British Airways Logo
3:50 pm - 2:55 pmIAH-LIS
17h 05m1 stop
$725British Airways
Find Deal
Mon, Dec 1 - Tue, Dec 9
British Airways Logo
12:55 pm - 2:05 pmLIS-IAH
31h 10m1 stop
British Airways Logo
11:34 am - 5:40 pmIAH-LIS
24h 06m2 stops
$730British Airways
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Fri, Oct 10 - Thu, Oct 23
Air France Logo
6:50 pm - 1:35 pmLIS-IAH
24h 45m1 stop
Air France Logo
3:50 pm - 11:15 amIAH-LIS
13h 25m1 stop
$734Air France
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Thu, Feb 19 - Mon, Feb 23
American Airlines Logo
10:55 am - 11:40 pmLIS-HOU
18h 45m2 stops
American Airlines Logo
10:18 am - 9:05 amHOU-LIS
16h 47m2 stops
$737American Airlines
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Mon, Dec 1 - Wed, Dec 10
Air France Logo
6:30 pm - 1:55 pmLIS-IAH
25h 25m1 stop
Air France Logo
4:05 pm - 11:20 amIAH-LIS
13h 15m1 stop
$744Air France
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Tue, Dec 2 - Thu, Dec 11
United Airlines Logo
5:00 am - 6:15 pmLIS-IAH
19h 15m1 stop
United Airlines Logo
12:18 pm - 10:15 amIAH-LIS
15h 57m1 stop
$799United Airlines
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Thu, Dec 4 - Thu, Dec 11
United Airlines Logo
6:10 am - 4:10 pmLIS-IAH
16h 00m1 stop
United Airlines Logo
12:18 pm - 10:15 amIAH-LIS
15h 57m1 stop
$811United Airlines
Find Deal

Everything you should know

Cheapest round-trip
$702
Typical prices: $718-780
Multiple Airlines
Fri 11/14Sat 11/15
LIS - IAH • 2 stops
Cheapest one-way
$380
Typical prices: $843-1093
Multiple Airlines
Wed 10/15
LIS - IAH • 3 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 Houston!
Booking Insights

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 $256.

Good to know

Cheapest flight$380
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 6,592 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.

Reviews of the 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 8929 reviews
7.7Boarding
8.1Crew
7.1Entertainment
6.6Food
7.3Comfort
Airline reviews

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

6.0 GoodKaren Andrea, Sep 2025SAT - IAH
Read more United Airlines reviews

Flight was good and crew was super polite. However, there were around 5 kids screaming the WHOLE 2 hours. I understand kids have to come but parents need to do something to control their children. They make the experience terrible, especially after finishing 16 hour shifts at the hospital I needed some sleep, which I did not get.

Armrest controller on my seat 35D and nextbooennseat 35E did not work right. Hard to press buttons to recognize and 35D had constantnpressure either upmost down somit was nearly impossible to make selections. .

I flew with my dog and had already purchased my dog’s ticket. Even that morning I had called costumer service to insure that my husband and I had seats together since the website was giving me an error when choosing our seats and the representative mentioned our dog. I showed up early to the airport and when I got to the gate and we started boarding I was help back and told that I was supposed to have a yellow tag and that I should have checked in at the counter for them to give me that tag. I was not aware of this, the representative on the phone did not say anything. Nor did I see it anywhere in the checking process online, so if you travel with a pet and are not checking in luggage, just know that you still have to go to the check in counter when arriving at the airport unless you want to be the last one to board and not have room for your carry on in the overhead bins. Other than that, I had a great experience.

The experience was great, the crew was very polite and hospitable. I will definitely make if my go to airlines.

This flight was perfect. No complaints and only the highest regard for the crew and ground staff and how they executed perfectly. I fly a lot with United and would request predictability and transparency in their operations instead of last minute changes.

This is for UA2274 from Houston to Sacramento. The flight was delayed arriving due to mechanical issues so we left about 3 hours later than scheduled. When boarding the plane the temperature inside was excessive - likely close to 100. Pilot apologized and said it was going to improve at altitude, which it did. But before that I honestly thought there might have been more delays removing passengers made ill from the heat. We were delayed leaving due to another mechanical issue. There was not water on the plane due to a panel that was not secured. They did that quickly, but the combination of mechanical issues was rather disturbing and did not reflect well on United.

United sent me a mileage plus number last year but that number is invalid so I can’t use it to check into flights or collect mileage. There is human to speak about the problem, only computers who keep asking me if I am using the correct email. It’s so frustrating and I cannot resolve it.

The woman gate agent in Phoenix was none too sympathetic about my check-in process as I am relatively new with using apps. I almost did not get on because she said I did not check-in. I thought I had via Kayak where I purchased a very expensive ticket. Lesson learned but to be told I may not get on as a matter of factly was difficult to hear.

Flight was on time. Boarding was smooth. Flight attendants were friendly and efficient. Entertainment system was broken for all passengers on the left side of the aisle. I would prefer if meals were not served on red eye flights. No one should need to dine at that time and it is disturbing for those passengers trying to sleep.

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

There's nothing I liked about it. For first off I scheduled this trip two weeks in advance then they delayed my flight which messed up my whole trip. So I scheduled it for the following weekend thinking there won't be a delay and guess what as soon as I got to the airport we said in the airplane on the tarmac for an hour and a half. Not only was it delayed I missed my connecting flight meaning I had to stay the night at Dallas-Fort Worth airport sleeping on the floor. I will tell you this I will never fly American airlines ever again I have had nothing but horrible experience with them and I just throw money at them

Having to reschedule flights a day later, they loaded by luggage on the wrong plane from Little rock now I have to HOPE they deliver it to where im staying like they said would. International flight crew was very disgruntled and not very friendly.

The entertainment package was vast and the selections were very current. Keep updating it was great.

Great flight. No issues at all. I still think boarding could be more efficient but otherwise, a good experience.

4 hours late, including over +1 hour waiting in plane to take off. Baggage left behind too.

No food offered, just chips. Crew was no nice. I had to Stand up and ask for a drink. Even for a midnight flight I have had better experiences from another airlines.

Our flight was 1.5 hours delayed. There was no weather for the inbound flight, so I don't understand why. This meant a VERY late arrival and only a quick nap before my morning flight.

It was very difficult to stretch my knee out and I am very short. I also had a torn tendon in my knee which made it extra uncomfortable anyways. My husband is 6'2" and I can't imagine him flying in that plane.

Delayed flight, so I switched fights to SFO to Phoenix , Phoenix to DSM. Excellent service through American Airlines

The AA app really sucks ... Every flight & connecting flights were delayed over 30 mins. One connecting flight on American Eagle said it was delayed in its arrival ... when it was actually parked across from the gate for over 1 hr before they pulled it to the gate. Seats in the economy/ main cabin are packed together like sardines ... no leg room.

what would have been better would have been that my booking not been canceled by the system and had I been informed that the booking had been cancelled by the system I could have immediately rebooked and not found out that there was an issue when I was told by the system that I needed to book in. It would have also been good if either the booking agent or BA or anyone been in anyway useful. In the end I had to rebook a flight at an additional cost of $350. So no I'm not impressed by BA any of the other parties involved.

Boarding was poor. Why are first class passengers not boarded first?! Bus to the plane and then held on a packed bus because we were waiting for people on the bus before to finish boarding. Seat belt on the fist clas seat is very uncomfortable, cutting into your neck. Other than that crew, seating and food were all excellent. Entertainment, as usual - rubbish.

I paid for full WIFI- it was terrible, kept being in and out could not listen to a podcast

Flight was delayed but my previous flight was as well so It worked to my advantage. This was my first time in first class. I don't think they ever stopped feeding us. The seating area was very spacious and comfortable. The attendants were wonderful, warm, friendly and very personable.

Some how my flight was canceled, neither BA or Justfly.com accepted responsibility. I only found out about this the day before when I tried to check in. I had to book another flight which due to the time ( day before) cost me $300 more. I was still receiving notifications about the flight even when I was on another flight from you. So no my flight to London was not good.

We had a pretty good experience. Enjoyed both the flights. Crew was very good and helpful.

They issued seat assignments and sat my 2 year-old in the row behind me, separate from me and my daughter. Communication/ customer service was terrible. They told me to change it in London, then in London, they told me to talk to the cabin crew, then a supervisor came and stuck us in the back of the plane when we were supposed to be in row 25. Overall, they need to really work on their customer service. Additionally the food was terrible and they ran out of meals and didn’t have any kid options. To top it off there was no in-flight entertainment for the first hour of the trip.

We missed the connection because we had to wait for a shuttle from the plane to the Terminal. Also, we needed assistance and none was available.

When we arrived at the airport - 1st step - printing out your boarding pass - no issue. Not long lines as these machines. 2nd step - processing your bag drop off. There was only one associate there to help 10 kiosks. We had a family in front of us for 20 minutes trying to work on the machine and figure out every step for 4 pieces of luggage. My husband alerted the associate who was able to assist the family. Highly suggest that there are more associates to assist in this process. Besides this issue, security check went very quickly. Our flight was direct to Philadelphia. We had to carry our bags down two flights of steps, then out to the tarmac to a bus, then carry our bags up two flights of stairs to the plane. No one on the flight was expecting that long trek. I could see some people were struggling a bit. All in all - great flight crew, plane was clean and food was great!

There were no gluten-free vegan options available, so food was very limited on this flight, and some of the crew weren’t especially helpful about it. To make matters worse, a passenger was sick on board, and although the area was cleaned, the smell lingered for the rest of the journey. On top of that, we ended up circling for an extra hour, which only made the unpleasant situation drag on even longer.

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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