$398 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 4/7. 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, 0 bags

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
Travelers love KAYAK
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Everything you should know

Cheapest round-trip
$651
Multiple Airlines
Mon 3/16Fri 3/20
LIS - IAH • 1 stop
Cheapest one-way
$398
Typical prices: $619-$748
Multiple Airlines
Tue 4/7
LIS - IAH • 2 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!
Flight Deals
Booking Insights
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

Mon, Mar 16 - Fri, Mar 20
Multiple Airlines Logo
10:10 am - 11:49 pm
LIS
-
IAH
18h 39m
1 stop
Multiple Airlines Logo
5:24 pm - 12:35 pm
IAH
-
LIS
14h 11m
1 stop
$651Multiple Airlines
Fri, Feb 13 - Fri, Feb 20
British Airways Logo
11:05 am - 9:36 pm
LIS
-
IAH
16h 31m
1 stop
British Airways Logo
1:16 pm - 5:55 pm
IAH
-
LIS
22h 39m
2 stops
$740British Airways
Sun, Feb 15 - Mon, Mar 2
British Airways Logo
11:05 am - 9:36 pm
LIS
-
IAH
16h 31m
1 stop
British Airways Logo
9:45 pm - 2:45 pm
IAH
-
LIS
35h 00m
1 stop
$742British Airways
Fri, Feb 13 - Fri, Feb 20
American Airlines Logo
8:20 am - 11:53 pm
LIS
-
IAH
21h 33m
2 stops
American Airlines Logo
9:45 am - 8:50 am
IAH
-
LIS
17h 05m
2 stops
$747American Airlines
Fri, Feb 13 - Fri, Feb 20
American Airlines Logo
11:05 am - 11:58 pm
LIS
-
HOU
18h 53m
2 stops
American Airlines Logo
10:13 am - 8:50 am
HOU
-
LIS
16h 37m
2 stops
$749American Airlines
Sat, Feb 14 - Mon, Mar 2
American Airlines Logo
10:40 am - 9:36 pm
LIS
-
IAH
16h 56m
1 stop
American Airlines Logo
7:59 am - 9:05 am
IAH
-
LIS
19h 06m
2 stops
$749American Airlines
Sun, Feb 15 - Mon, Mar 2
Delta Logo
5:00 am - 8:09 pm
LIS
-
IAH
21h 09m
2 stops
Delta Logo
12:47 pm - 3:10 pm
IAH
-
LIS
20h 23m
2 stops
$843Delta
Thu, Feb 12 - Sun, Feb 15
Iberia Logo
6:30 am - 7:46 pm
LIS
-
HOU
19h 16m
2 stops
Iberia Logo
10:13 am - 7:40 am
HOU
-
LIS
15h 27m
2 stops
$985Iberia
Wed, Jun 24 - Fri, Jul 3
Delta Logo
5:35 am - 9:38 pm
LIS
-
HOU
22h 03m
2 stops
Delta Logo
5:35 pm - 6:45 pm
HOU
-
LIS
19h 10m
2 stops
$1,106Delta
Sat, Jun 27 - Tue, Jul 7
Iberia Logo
12:30 pm - 11:52 pm
LIS
-
HOU
17h 22m
2 stops
Iberia Logo
6:23 pm - 4:05 pm
HOU
-
LIS
15h 42m
2 stops
$1,559Iberia
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, with an average flight price of $272.

Good to know

Cheapest flight$398
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

  • 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.

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

    Each week there are around 6,027 direct flights from within Portugal to Houston. The most common day for departures is Sunday, with 16% 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 airline flying 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 9215 reviews
7.7Boarding
6.6Food
8.1Crew
7.1Entertainment
7.3Comfort
Airline reviews

Delayed, toilets did not flush, pilot parked to far away from Gate

2.0 MediocreLisa, Jan 2026
ELP - IAH
Read more United Airlines reviews

Delayed, toilets did not flush, pilot parked to far away from Gate

Check-in, boarding and the flight from Phoenix to Houston was quick and easy. The flight from Houston to Shreveport was delayed 5 hours. It was frustrating but I think United handled it the best they could.

The staff was hospitable and professional. The seat had a bit of wear. The winner shade was stuck 1/4 open. I received the best of both worlds. The morning sun was able to come in and blind the screen i was trying to use while at the same time it was too low to look out and enjoy the view. Rather embarrassing for a 1st class ticket.

In Liberia airport 5 min before our departure the airport was closed for takeoff for 30 min. Upon arrival to IAH we didn’t have any available gate and waited taxing another 40 min. As a result we arrived for 1+ h later. The walkway to the passport control in IAH is about 1-2 ml long. After the passport control you have to pass the security check again. Only 3 out of 16 checkpoints were open and the line was enormously long. As a result, even though we supposed to have 2.5 hrs gap in between the flights we missed our transfer. United rebooked us for the next available flight early morning and provided free hotel and meal vouchers through.

United is an incompetent airline. They parked the plane on the tarmac for an hour after arriving because they “didn’t have a gate available” it was actually some sort of lie because as we de planed there were approximately 9 open and manned and empty gates that we walked past. Many people on the flight missed connections for the hour long sit on the tarmac. Utterly baffling and incompetent behavior from United flight ops.

I boarded flight UA#1318 at Sacramento International Airport going back to Houston TX. The flight was scheduled at 5:10am. I was able to check in virtually using the United Airlines app. When I entered the airport, there was no one outside assisting with checked bags as it was for Delta Airlines. Immediately upon entering, there was a LONG, EXTREMELY LONG line to the kiosks to get boarding passes. I stand in line to get boarding passes then had to move to ANOTHER EXTREMELY LONG line to get my bags checked in. While standing in this line, we noticed an agent taking customers to 3 at a time to her station to check their bags in. Lucky for me, she called me back, checked my bags for me and I was on my way. I then encountered another long line at the TSA check and to avoid I ending up having to sign up for CLEAR to bypass it. So glad, I did.,...Both of my flights were great with no issues, butthe check in progress at Bush Airport was so much smoother. Check-in at SMF airport needs to be anaylzed and corrected. Do better United, I know you can....thanks

everything was pretty good. Houston airport is awful. Unnecessarily inefficient; people working there are rude. Badly run

Staff on board was excellent. Positive upbeat helpful- like it used to be.

The Sears in the 800s are not too good perfect Airbus why cant the new 737 fix that

Ot was overall fine. Left on time and had basic snacks. Weather was finicky but that’s not the airlines fault.

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.