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$293+ 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 11/13. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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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 September 11, 2025.

Round-trip from

$642
(Kiwi.com)

One-way from

$293
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$817
From Portugal to Houston
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One-way flight from Portugal to Houston
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Highest demand for flights based on searches. 14% potential increase in price ($155 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($36 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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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 September 11, 2025.

This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Wed 12/33:25 pmLIS - IAH
2 stops47h 29mMultiple Airlines
Wed 12/106:00 amIAH - LIS
1 stop17h 25mMultiple Airlines
Deal found 9/11$642
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 12/47:00 amLIS - IAH
2 stops31h 54mMultiple Airlines
Wed 12/1011:00 amIAH - LIS
1 stop18h 40mMultiple Airlines
Deal found 9/11$652
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Wed 12/33:25 pmLIS - IAH
2 stops47h 29mMultiple Airlines
Mon 12/86:00 amIAH - LIS
1 stop17h 25mMultiple Airlines
Deal found 9/11$659
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 11/105:40 pmLIS - IAH
2 stops42h 40mMultiple Airlines
Thu 11/137:00 amIAH - LIS
1 stop16h 25mMultiple Airlines
Deal found 9/10$669
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 12/47:00 amLIS - IAH
2 stops31h 54mMultiple Airlines
Sat 12/67:00 amIAH - LIS
1 stop20h 55mMultiple Airlines
Deal found 9/11$691
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 12/47:00 amLIS - IAH
2 stops31h 54mMultiple Airlines
Tue 12/911:00 amIAH - LIS
1 stop16h 55mMultiple Airlines
Deal found 9/11$698
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Thu 12/47:00 amLIS - IAH
2 stops31h 54mMultiple Airlines
Thu 12/117:00 amIAH - LIS
1 stop16h 25mMultiple Airlines
Deal found 9/11$701
This AirNGo deal was found by Cheapflights users on 9/11. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:00 amLIS - IAH
1 stop14h 15mMultiple Airlines
Sat 9/273:50 pmIAH - LIS
1 stop17h 00mMultiple Airlines
Deal found 9/11$712
This AirNGo deal was found by Cheapflights users on 9/10. 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 AirNGo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/205:40 amLIS - IAH
1 stop13h 55mAir France
Sun 9/283:50 pmIAH - LIS
1 stop13h 25mAir France
Deal found 9/10$718
This British Airways deal was found by Cheapflights users on 9/11. 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.
Wed 12/311:15 amLIS - IAH
1 stop16h 13mBritish Airways
Mon 12/89:45 pmIAH - LIS
1 stop35h 00mBritish Airways
Deal found 9/11$723
This Finnair deal was found by Cheapflights users on 9/9. 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 Finnair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/3010:55 amLIS - IAH
1 stop15h 56mMultiple Airlines
Sat 11/153:50 pmIAH - LIS
1 stop24h 40mMultiple Airlines
Deal found 9/9$724
This Delta deal was found by Cheapflights users on 9/10. 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.
Fri 11/75:00 amLIS - HOU
2 stops24h 00mDelta
Fri 11/146:00 amHOU - LIS
2 stops23h 20mDelta
Deal found 9/10$736

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 September 11, 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 11/10

5:40 pm-6:20 am

2 stops42h 40m

Houston George Bush Intcntl

Thu 11/13

7:00 am-5:25 am

1 stop16h 25m

$669

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sat 2/14

6:30 am-7:56 pm

2 stops19h 26m

Houston George Bush Intcntl

Sun 2/22

3:50 pm-9:45 pm

1 stop23h 55m

$705

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 2/13

11:05 am-9:27 pm

1 stop16h 22m

Houston George Bush Intcntl

Sun 2/22

3:50 pm-5:45 pm

1 stop19h 55m

$713

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 2/13

6:30 am-7:56 pm

2 stops19h 26m

Houston George Bush Intcntl

Sun 2/22

9:50 pm-5:45 pm

1 stop13h 55m

$713

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 2/19

10:55 am-7:53 pm

2 stops14h 58m

Houston George Bush Intcntl

Mon 2/23

3:50 pm-9:55 pm

1 stop24h 05m

$723

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 12/3

11:15 am-9:28 pm

1 stop16h 13m

Houston George Bush Intcntl

Thu 12/11

1:19 pm-2:45 pm

2 stops19h 26m

$723

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 10/30

10:55 am-1:33 pm

2 stops31h 38m

Houston George Bush Intcntl

Fri 11/14

3:50 pm-5:55 pm

1 stop20h 05m

$723

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 12/4

10:55 am-9:28 pm

1 stop16h 33m

Houston George Bush Intcntl

Sun 12/7

9:50 pm-12:05 pm

1 stop32h 15m

$723

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 12/3

11:15 am-9:28 pm

1 stop16h 13m

Houston George Bush Intcntl

Sun 12/7

3:50 pm-5:45 pm

1 stop19h 55m

$723

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 12/3

11:15 am-9:28 pm

1 stop16h 13m

Houston George Bush Intcntl

Mon 12/8

9:45 pm-2:45 pm

1 stop35h 00m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/8

Showing 1-10 of 44 results
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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 $331). 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.

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 September 11, 2025.
Peruse reviews from past customers who have flown with United Airlines, American Airlines, and British Airways from Portugal to Houston to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
United Airlines
7.4
Good
8,937 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
American Airlines
7.2
Good
10,000 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.
British Airways
6.7
Okay
7,361 reviews
United Airlines
7.4
Good
8,937 reviews

Boarding

7.7

Entertainment

7.1

Comfort

7.3

Food

6.6

Crew

8.1

Overall

7.4

Reviews

1 / 20
10.0
Excellent

Anonymous,Sep 2025

FRA - SFO

Lufthansa was amazing, I wish United States based airlines operated like them.

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.

  • How long is the flight from Portugal to Houston?

    Departing from Portugal to Houston will take you 16h 22m. The distance from Portugal to Houston is about 4767 mi. This flight may include one or multiple stops.

  • 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 $331). 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

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Top 3 airlines flying from Portugal to Houston

Discover the top 3 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
British AirwaysCheapest$682Average$861FlexibilityNo cancel feeOn-time70%
United AirlinesCheapest$767Average$838FlexibilityNo cancel feeOn-time69%

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