$389 Find Cheap Flights from Houston George Bush Airport to Portugal

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from George Bush Intcntl to Portugal departing on 7/28. 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

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Cheap Flights from George Bush Intcntl to Portugal

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Lisbon
Lisbon1 stop$765
Porto
Porto1 stop$784
Faro
Faro1 stop$1,015
Funchal
Funchal3 stops$1,230
Lisbon
Lisbon1 stop$765
Porto
Porto1 stop$784
Faro
Faro1 stop$1,015
Funchal
Funchal3 stops$1,230

Book Cheap George Bush Intcntl to Portugal Plane Tickets

 
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 Portugal 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 Portugal

Wed, Oct 21 - Wed, Oct 28
Turkish Airlines Logo
9:05 pm - 3:45 pm
IAH
-
LIS
36h 40m
1 stop
Turkish Airlines Logo
5:55 am - 8:10 pm
LIS
-
IAH
19h 15m
1 stop
$765Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 11:30 pm
IAH
-
OPO
20h 25m
1 stop
Turkish Airlines Logo
6:10 am - 7:10 pm
OPO
-
IAH
19h 00m
1 stop
$784Turkish Airlines
Tue, Sep 15 - Thu, Sep 24
Turkish Airlines Logo
9:05 pm - 11:30 pm
IAH
-
OPO
20h 25m
1 stop
Turkish Airlines Logo
6:10 am - 7:10 pm
OPO
-
IAH
19h 00m
1 stop
$785Turkish Airlines
Wed, Oct 21 - Wed, Oct 28
Turkish Airlines Logo
9:05 pm - 3:45 pm
IAH
-
LIS
36h 40m
1 stop
Turkish Airlines Logo
5:55 am - 8:10 pm
LIS
-
IAH
19h 15m
1 stop
$788Turkish Airlines
Fri, Oct 16 - Tue, Oct 20
United Airlines Logo
6:05 pm - 9:45 am
IAH
-
OPO
33h 40m
1 stop
United Airlines Logo
12:15 pm - 3:32 pm
OPO
-
IAH
33h 17m
2 stops
$819United Airlines
Sat, Oct 17 - Sat, Nov 7
Air Canada Logo
4:45 pm - 9:20 am
IAH
-
LIS
34h 35m
2 stops
Air Canada Logo
11:20 am - 9:39 pm
LIS
-
IAH
16h 19m
1 stop
$819Air Canada
Fri, Oct 16 - Tue, Oct 20
United Airlines Logo
6:50 pm - 7:00 am
IAH
-
OPO
30h 10m
2 stops
United Airlines Logo
12:15 pm - 3:32 pm
OPO
-
IAH
33h 17m
2 stops
$823United Airlines
Fri, Oct 16 - Wed, Oct 21
Delta Logo
1:15 pm - 3:25 pm
IAH
-
OPO
20h 10m
2 stops
Delta Logo
5:00 am - 6:59 pm
OPO
-
IAH
19h 59m
2 stops
$830Delta
Sun, Jun 7 - Mon, Jun 29
British Airways Logo
9:00 pm - 11:30 am
IAH
-
FNC
32h 30m
1 stop
British Airways Logo
6:55 pm - 7:10 pm
FNC
-
IAH
30h 15m
1 stop
$1,312British Airways
Sun, Jun 7 - Mon, Jun 29
British Airways Logo
6:45 pm - 11:30 am
IAH
-
FNC
34h 45m
2 stops
British Airways Logo
6:55 pm - 7:10 pm
FNC
-
IAH
30h 15m
1 stop
$1,324British Airways
Booking Insights

KAYAK's insights & trends for George Bush Intcntl to Portugal flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Houston George Bush Intcntl Airport to Portugal, 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 from Houston George Bush Intcntl Airport to Portugal is April, when tickets cost $467 (return) on average. On the other hand, the most expensive months are June and July, when the average cost of round-trip tickets is $1,110 and $759 respectively.

How far in advance should I book a flight from Houston George Bush Intcntl Airport to Portugal?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Houston George Bush Intcntl Airport to Portugal, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Houston George Bush Intcntl Airport to Portugal, you should book around 2 weeks before departure, which saves you about 21% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 16 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$389
Best time to beat the crowds with an average 2% drop in price.
Most popular time to fly with an average 40% increase in price.
Flight from Houston George Bush Airport to Porto

FAQs - booking Portugal flights

  • Is it necessary to get a visa before flying to Portugal from Houston?

    Because Portugal is a member of the Schengen area, there is no need to get a visa to travel here so long as you don't plan on staying in the country for more than 90 days. One of the benefits of Portugal being a member of this area is that you can travel to any other country in the area without having to obtain a new visa to travel.

  • What are some of the child car seat laws I should know about before I start driving after my arrival in Portugal?

    When you drive with kids in Portugal, they must travel in a car seat facing to the rear until they are 15 months old, and then one that faces forward until they are four years old. After that, children must travel in a booster seat until they reach the age of 12, weigh more than 79 pounds, or have a height greater than 53 in.

  • Is George Bush Intercontinental Airport a hub for any airline?

    George Bush Intercontinental Airport is a major hub for United Airlines. It serves as one of United's key hubs, facilitating numerous domestic and international flights for the airline. What this means for travelers making their way to Portugal on this airline is that you will find a number of different flight options, which can be especially beneficial if there are any problems or issues with your original flight.

  • What are some reasons to upgrade to First Class when traveling aboard American Airlines from Houston to Portugal?

    Upgrade to First Class on American Airlines for your Houston to Portugal flight for a luxurious journey. Enjoy spacious seating, fully flat beds, and gourmet dining. Benefit from personalized service, priority boarding, and access to exclusive lounges. The enhanced in-flight entertainment system and increased baggage allowance ensure a comfortable and indulgent travel experience for the long-haul flight to Portugal.

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

    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 Portugal.

  • 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 Portugal?

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

    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 from Houston George Bush Airport to Portugal 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 from Houston George Bush Airport to Portugal?

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

Top tips for finding cheap flights to Portugal

  • One of the most common airport destinations when traveling to Portugal is Humberto Delgado Airport (LIS). When leaving from George Bush Intercontinental Airport (IAH), American Airlines offers a one-stop flight that has a layover at Philadelphia International Airport (PHL), while United Airlines offers a one-stop flight that has a layover at Newark Liberty International Airport (EWR).
  • When you are trying to make your way to the Francisco Sá Carneiro Airport (OPO) from George Bush Intercontinental Airport, both Delta and KLM offer flights with one stop at Amsterdam Airport Schiphol (AMS).
  • Travelers leaving George Bush Intercontinental Airport early in the morning for a flight to Portugal might want to consider staying the night at the Houston Airport Marriott at George Bush Intercontinental, which offers access to all three terminals at the airport through an underground tram.
  • If you are looking for the best way to get to Faro International Airport (FAO) from George Bush Intercontinental Airport, United Airlines offers a one-stop flight here that has a layover at Newark International Airport.
  • When traveling aboard United Airlines from George Bush Intercontinental Airport, a great place to wait for your flight is inside one of the four United Club locations you'll find at this airport.

Reviews of the top 5 airlines serving from George Bush Intcntl to Portugal

 
Need help choosing which airline to fly with from George Bush Intcntl to Portugal? 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 8468 reviews
8.5Crew
8.1Boarding
7.9Comfort
7.8Entertainment
7.2Food
Airline reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

6.0 GoodSilvestre, Apr 2026
MCO - GRU
Read more Delta reviews

The flight was operated by Latam. The aircraft had a technical issue and the flight was delayed for the next day. They grounded other passengers to get their airplane assigned to my flight. Most of he ground staff don't speak English (Orlando Airport), but were very polite.The crew on the other hand could speak English and Portuguese. On board service was good.

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

Communication on the delay, rebooking and how to get a hotel was poor. Mails, airport check-in and transfer desk said different things.

Not consistent with the food quality (I mean taste not freshness)

Safe and stable made me sleepy and I slept and dreamt 😂😂😂😂

Food was really mediocre for premium economy in comparison to other airlines… the crew was nowhere to be found… 14 hour flight…

I bought business class tickets but the seats are exactly like economy with no comfort seats nor an empty seat next to me provided. Very poor, low quality airline.

I don't understand the concept of paying to get your personal luggage onboard and then asked to check it in.... either sell the space or don't, its a hassle to carry those all through the airport just to make a check in at the last minute.

It was a great experience. The only thing I would have changed was that the bathrooms were never cleaned and they got very dirty.

Old airplanes small seats expensive tickets, not as expected overall and not comfortable according to the price

It was an OK flight with below mediocre service by their flight attendants

Wasted a lot of time trying to find the CDG lounge - it was not next to the connecting flight gate like the Air France staff said.

It's a long flight and I would have liked better snacks between lunch and the arrival meal. It's fine to have fruit and nuts but I really don't like ramen because it's salty junk soup. I'd suggest sandwiches. They're not expensive nor are they hard to store for a long flight. The FA's had a couple of big services and they were super busy preparing, executing and then cleaning up. Then they disappeared.

Great flight. Got to watch a movie. Smooth flight and early arrival at ORD.

I've been flying American mostly, and it's been very frustrating. This united flight makes me realize maybe the issue isn't flying, but the airline. United was a significantly better experience. The plane was more comfortable, with a normal amount of leg room (vs the ridiculous reductions AA has made), more comfortable seats, screens to watch movies. It was a much better experience!

We had excellent customer service despite the chaos at George Bush airport in Houston!

It isvvery small flight. No leg room . No space to put my personal item at feet.

Didn't make the flight because the first leg of my flight was canceled and the next leg was already booked.

Terrible because it was cancelled due to volcanic ash clouds in Guatemala while all other airlines kept flying. Had to pay for a hotel to stay overnight in Houston and try to fly next day.

Overall we had a good experience during our flight from San Francisco to Houston.

Airport terminal was outdated, flight was on a small jet with no wifi

The crew made our experience extremely bad. They were rude and didn’t have anything for kids.

shittiest airline in the hemisphere. To improve - start thinking you're flying people, not cattle

Easy boarding, inflight refreshments came on time and comfortable seat

It was good that our flight left early. It was a nice smooth flight and landing.

All good……but luggage didn’t make it on the airplane. Had to wait 3 days. Was a bummer.

Small suitcase used for carryon the last time was refused by boarding crew this time. Appears to be at the discretion and mood of the person on the day. Flight was only half booked, there would have been no problem with space.

It was a problem because there was a delay where we sat before taking off from newark,then when landed in Toronto we sat on tarmac and they wouldn't let us out for a long period of time. When we finally were released to the airport in Toronto the attendant scanned our boarding pass that we were here for our connection to Brazil. We ran all the way to the gate and they said at the gate the door is shut so we can not let you on the plane. We explained that we were checked in by the attendant when we arrived at Toronto airport to go to Brazil and they should not have shut the door. We were ignored at the gate

Flight home was delayed multiple times, did not get home until 2am

Rude flight attendants with poor service. Worst first class experience I’ve ever had.

Again, we were rerouted all the way to Zurich and had a longer journey than expected.

It was just fine. I managed to make all my connection too sbut had trouble in Munich with no wheel chair and trouble trying to get help from the airport people to get to the other terminal for my flight. Finally a wonderful lady Amelia, helped me to make my flight connection Timon with zero time to spare.

Boarding was orderly, pilot and flight attendants were nice, entertainment options were good, and low sodium meals were quite tasty.

The whole experience was excellent, O can say out from Miami the best airline to travel with for any European destination. Since the ground staff to the inflight crew attention was great, service on board 10 of 10. Finally the 380 is very confortable and nice to travel.

All crew except 1 were excellent. When I asked assistance with business class seat conversion to a bed (not being familiar as never used before but have numerous times with other airlines) crew member helped very reluctantly. I should have told her that business class seat conversion is totally different in each airline such as Delta, New Zealand Air and United. Sorry it was my 1st time with America Airlines. Now I know, I won't bother asking assistance in future.

1st class seats NOT REALLY 1st class or business class but like premier economy. Should be listed as such or named something else. I have flown 1st class with other airlines and they are nothing like it at all.

The seats in Premier Economy were very comfortable. The food was better than average. The way British Airways handled our seating was atrocious.

Worst airline in the world. They downgraded me from business class to economy with no compensation.

Flight delayed, connection was not at gate listed and so missed, staff were rude at Heathrow, phone tree stupid and difficult, took me 21 actual hours to reach my destination. Almost lost my hotel reservation after walking in a strange city alone after midnight because they would not put me up in a hotel at sfo or heathrow. I will never fly BA again and will tell all people and Instagram followers never to fly BA.

Nice aircraft. Good crew. Delayed departure from Houston, but arrived on time in London. Main thing I don’t like about flying BA is having to transit through security in London Heathrow. A major pain!

It was not British Air, we were put onto Air Portugal for our London to Lisbon leg.

Good service, food and comfort in World Traveller Plus. Entertainment was poor - no wifi on the way out and barely working on the way back. Not a great choice of entertainment on the seat back tv.

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

Information on your arrival and departure airports