HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Houston

$320+ Cheap flights from Portugal to Houston

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/28. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Portugal to Houston with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Portugal to Houston

Keep the following information in mind while searching for Portugal to Houston flight deals. Data was last updated April 17, 2025.

Round-trip from

$683
(Kiwi.com)

One-way from

$320
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$796
From Portugal to Houston
Search Deals
One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($138 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($22 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

Find flight deals from Portugal to Houston

Cheapest flights from Portugal to Houston
Explore the most affordable flight options available from Portugal to Houston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 17, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/268:05 pmLIS - IAH
2 stops32h 41mMultiple Airlines
Mon 7/217:00 amIAH - LIS
1 stop16h 50mMultiple Airlines
Deal found 4/16$683
This Delta deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/245:00 amLIS - IAH
1 stop14h 15mDelta
Sat 5/103:50 pmIAH - LIS
1 stop17h 00mDelta
Deal found 4/16$730
This British Airways deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/265:05 pmLIS - IAH
1 stop26h 35mBritish Airways
Mon 7/213:30 pmIAH - LIS
1 stop18h 10mBritish Airways
Deal found 4/16$741
This Air France deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2412:45 pmLIS - IAH
2 stops17h 11mAir France
Sat 5/103:50 pmIAH - LIS
1 stop17h 00mAir France
Deal found 4/16$748
This Travelocity deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/268:45 pmLIS - IAH
2 stops32h 57mIberia
Mon 7/217:18 pmIAH - LIS
2 stops18h 47mIberia
Deal found 4/16$781
This Travelocity deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/2612:30 pmLIS - HOU
2 stops17h 28mMultiple Airlines
Mon 7/212:29 pmHOU - LIS
2 stops19h 36mMultiple Airlines
Deal found 4/16$1,049
This United Airlines deal was found by Cheapflights users on 4/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/1811:25 amLIS - IAH
1 stop14h 31mUnited Airlines
Thu 5/224:35 pmIAH - LIS
1 stop23h 15mUnited Airlines
Deal found 4/17$1,058
This Gotogate deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2411:25 amLIS - IAH
1 stop16h 36mAir Canada
Sat 5/1010:00 amIAH - LIS
2 stops18h 45mAir Canada
Deal found 4/16$1,067
This American Airlines deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2411:05 amLIS - IAH
2 stops15h 35mAmerican Airlines
Sat 5/103:25 pmIAH - LIS
1 stop25h 45mAmerican Airlines
Deal found 4/15$1,077
This Virgin Atlantic deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2412:45 pmLIS - HOU
2 stops16h 23mVirgin Atlantic
Sat 5/101:02 pmHOU - LIS
2 stops15h 43mVirgin Atlantic
Deal found 4/16$1,117
This Virgin Atlantic deal was found by Cheapflights users on 4/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/2412:45 pmLIS - IAH
2 stops15h 22mVirgin Atlantic
Sat 5/1011:45 amIAH - LIS
2 stops17h 00mVirgin Atlantic
Deal found 4/15$1,169
This StudentUniverse deal was found by Cheapflights users on 4/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure StudentUniverse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/112:30 pmLIS - HOU
2 stops17h 28mBritish Airways
Sun 6/88:23 pmHOU - LIS
2 stops20h 42mBritish Airways
Deal found 4/16$1,225

Cheapflights Fare Finder

Customize your flight search to find flights from Portugal to Houston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
Use the filters below to find and compare flights from Portugal to Houston that are best for you.

Fly from

Portugal

Fly to

Houston

Route

Depart

Return

Price

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 5/26

8:05 pm-10:46 pm

2 stops32h 41m

Houston George Bush Intcntl

Mon 7/21

7:00 am-5:50 am

1 stop16h 50m

$683

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 5/26

5:05 pm-1:40 pm

1 stop26h 35m

Houston George Bush Intcntl

Mon 7/21

3:30 pm-3:40 pm

1 stop18h 10m

$741

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 4/30

5:40 am-5:43 pm

2 stops18h 03m

Houston George Bush Intcntl

Wed 5/7

3:50 pm-10:25 pm

1 stop24h 35m

$750

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 5/26

8:45 pm-11:42 pm

2 stops32h 57m

Houston George Bush Intcntl

Mon 7/21

7:18 pm-8:05 pm

2 stops18h 47m

$781

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Mon 5/26

12:30 pm-11:58 pm

2 stops17h 28m

Houston Hobby

Mon 7/21

2:29 pm-4:05 pm

2 stops19h 36m

$1,049

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 5/18

11:25 am-7:56 pm

1 stop14h 31m

Houston George Bush Intcntl

Thu 5/22

4:35 pm-9:50 pm

1 stop23h 15m

$1,058

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Sun 6/1

12:30 pm-11:58 pm

2 stops17h 28m

Houston Hobby

Sun 6/8

8:23 pm-11:05 pm

2 stops20h 42m

$1,225

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Wed 4/30

9:00 am-11:56 pm

2 stops20h 56m

Houston Hobby

Wed 5/7

6:31 pm-4:05 pm

2 stops15h 34m

$1,709

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Sun 5/18

5:40 am-10:21 pm

2 stops22h 41m

Houston Hobby

Thu 5/22

6:00 am-11:15 am

2 stops23h 15m

$1,733

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 5/28

8:45 pm-8:45 am

3 stops42h 00m

$320

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 19 results
1
2

Best time to book a flight from Portugal to Houston

Have a flexible travel schedule? Discover the best time to fly to Houston from Portugal with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Portugal to Houston

What is the cheapest month to book a flight from Portugal to Houston?

Currently, September is the cheapest month in which you can book a flight from Portugal to Houston (average of $230). Flying from Portugal to Houston in March is currently the most expensive (average of $334). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Rainfall in Houston by month

Plan your trip to Houston by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Houston ranges from 3.2 - 5.9 inches per month. June is typically the wettest month, when rainfall can reach 5.9 in. February is typically the driest time to visit Houston when rainfall is around 3.2 in.

Temperature in Houston by month

Plan your trip to Houston by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Houston, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 53.6 F).

Reviews of airlines servicing Houston

Get insights into the airlines that provide service to Houston. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Houston. Reviews last updated April 17, 2025.
See what other customers who have flown with Delta, Finnair and Air France from Portugal to Houston have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,917 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,269 reviews
Delta
8.0
Very good
7,917 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very good
7,917 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,917 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Turkish Airlines
7.3
Good
3,769 reviews
Delta
8.0
Very good
7,917 reviews

Boarding

8.2

Overall

8.0

Food

7.3

Crew

8.5

Comfort

7.9

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portugal to Houston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Portugal to Houston one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at $585. Turkish Airlines flights start at $680 while deals on Iberia start at $690 one-way.

  • Can I find deals for flights from Portugal to Houston that include hotel bookings?

    Yes. In addition to deals on Portugal to Houston flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Houston?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Houston.

  • Can I find deals for business class flights from Portugal to Houston?

    Yes. Cheapflights offers flight deals from Portugal to Houston by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Portugal to Houston?

    Currently, September is the cheapest month in which you can book a flight from Portugal to Houston (average of $230). Flying from Portugal to Houston in March is currently the most expensive (average of $334). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Portugal to Houston

See prices for flight routes from nearby airports that may be better suited for you.
Charles de Gaulle to Dallas/Fort Worth flights
Heathrow to Dallas/Fort Worth flights
Frankfurt to Dallas/Fort Worth flights
Heathrow to Hobby flights
Heathrow to George Bush Intcntl flights
Madrid to Dallas/Fort Worth flights
Charles de Gaulle to Hobby flights
Heathrow to Austin flights
Gatwick to Dallas/Fort Worth flights
Charles de Gaulle to George Bush Intcntl flights
Charles de Gaulle to Love Field flights
Dublin to Dallas/Fort Worth flights
Istanbul to Hobby flights
Frankfurt to Love Field flights
London City to Dallas/Fort Worth flights
Heathrow to Love Field flights
Gatwick to Hobby flights
Amsterdam to Hobby flights
Frankfurt to Hobby flights
Istanbul to George Bush Intcntl flights
Frankfurt to Austin flights
Istanbul to Dallas/Fort Worth flights
London City to George Bush Intcntl flights
Gatwick to George Bush Intcntl flights
Leonardo da Vinci/Fiumicino to Dallas/Fort Worth flights
Manchester to Hobby flights
Frankfurt to George Bush Intcntl flights
Amsterdam to George Bush Intcntl flights
Barcelona-El Prat to Dallas/Fort Worth flights
Amsterdam to Dallas/Fort Worth flights
Orly to Hobby flights
Madrid to Hobby flights
Bruxelles-National to Dallas/Fort Worth flights
Edinburgh to Dallas/Fort Worth flights
Gatwick to Austin flights
Vicenza to Dallas/Fort Worth flights
Orly to George Bush Intcntl flights
Madrid to Love Field flights
Bruxelles-National to Hobby flights
Leonardo da Vinci/Fiumicino to Hobby flights
Manchester to George Bush Intcntl flights
Helsinki to Dallas/Fort Worth flights
Madrid to George Bush Intcntl flights
Duesseldorf Intl to Dallas/Fort Worth flights
Glasgow Intl to Dallas/Fort Worth flights

Top 2 airlines flying from Portugal to Houston

Discover the top 2 airlines that operate flights from Portugal to Houston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$682Average$792FlexibilityNo cancel feeOn-time70%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.