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$340+ 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 1/30. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
dic. 13 — dic. 201
sáb. 12/13
sáb. 12/20
1 adult, Economy
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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 noviembre 13, 2025.

This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 12/145:00 amLIS - IAH
1 stop19h 15mUnited Airlines
lun. 12/297:25 amIAH - LIS
1 stop20h 50mUnited Airlines
Deal found 11/11$820
This lol.travel deal was found by Cheapflights users on 11/12. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/156:10 amLIS - IAH
1 stop16h 00mLufthansa
mar. 12/305:05 pmIAH - LIS
2 stops39h 45mLufthansa
Deal found 11/12$832
This United Airlines deal was found by Cheapflights users on 11/13. 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.
lun. 12/156:10 amLIS - IAH
1 stop16h 00mUnited Airlines
lun. 12/297:25 amIAH - LIS
1 stop20h 50mUnited Airlines
Deal found 11/13$834
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/198:20 amLIS - IAH
2 stops17h 31mAmerican Airlines
mar. 11/254:32 pmIAH - LIS
2 stops16h 13mAmerican Airlines
Deal found 11/11$839
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1811:05 amLIS - IAH
2 stops28h 58mAmerican Airlines
mar. 11/253:00 pmIAH - LIS
2 stops17h 45mAmerican Airlines
Deal found 11/11$841
This British Airways deal was found by Cheapflights users on 11/13. 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.
vie. 12/1911:05 amLIS - IAH
1 stop17h 51mBritish Airways
jue. 1/83:50 pmIAH - LIS
1 stop14h 20mBritish Airways
Deal found 11/13$843
This Expedia deal was found by Cheapflights users on 11/12. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/155:00 amLIS - IAH
2 stops23h 47mMultiple Airlines
mar. 12/304:20 pmIAH - LIS
2 stops16h 15mMultiple Airlines
Deal found 11/12$846
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/1811:20 amLIS - IAH
1 stop16h 19mUnited Airlines
mié. 11/267:30 amIAH - LIS
1 stop20h 45mUnited Airlines
Deal found 11/11$849
This American Airlines deal was found by Cheapflights users on 11/13. 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.
vie. 12/1911:05 amLIS - IAH
2 stops18h 25mAmerican Airlines
jue. 1/89:50 pmIAH - LIS
1 stop18h 05mAmerican Airlines
Deal found 11/13$851
This American Airlines deal was found by Cheapflights users on 11/11. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/198:20 amLIS - IAH
2 stops17h 31mAmerican Airlines
mié. 11/265:00 amIAH - LIS
2 stops21h 55mAmerican Airlines
Deal found 11/11$852
This United Airlines deal was found by Cheapflights users on 11/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/1910:15 amLIS - IAH
1 stop14h 55mUnited Airlines
lun. 11/244:50 pmIAH - LIS
1 stop11h 25mUnited Airlines
Deal found 11/11$854
This United Airlines deal was found by Cheapflights users on 11/12. 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.
sáb. 12/2711:55 amLIS - IAH
1 stop26h 55mUnited Airlines
sáb. 1/36:20 pmIAH - LIS
1 stop33h 55mUnited Airlines
Deal found 11/12$855

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 noviembre 13, 2025.

Round-trip from

$792
(KLM)

One-way from

$340
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$868
From Portugal to Houston
Search Deals
One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($121 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($32 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
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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 noviembre 13, 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

jue. 1/22

11:25 am-1:30 pm

1 stop32h 05m

Houston George Bush Intcntl

mar. 1/27

4:05 pm-11:20 am

1 stop13h 15m

$792

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

jue. 1/22

5:00 am-10:35 pm

2 stops23h 35m

Houston Hobby

mar. 1/27

11:09 am-3:10 pm

2 stops22h 01m

$799

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 1/22

5:00 am-9:15 pm

2 stops22h 15m

Houston George Bush Intcntl

mar. 1/27

12:20 pm-11:20 am

2 stops17h 00m

$799

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 1/15

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

lun. 1/19

2:30 pm-8:10 am

1 stop11h 40m

$820

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

dom. 12/14

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

lun. 12/29

7:25 am-10:15 am

1 stop20h 50m

$820

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 2/19

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

lun. 2/23

7:25 am-10:15 am

1 stop20h 50m

$820

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 1/15

5:00 am-9:44 pm

2 stops22h 44m

Houston George Bush Intcntl

lun. 1/19

12:10 pm-2:50 pm

2 stops20h 40m

$832

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jue. 2/19

5:00 am-9:44 pm

2 stops22h 44m

Houston George Bush Intcntl

lun. 2/23

12:10 pm-2:50 pm

2 stops20h 40m

$832

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

jue. 1/15

10:55 am-10:46 pm

2 stops17h 51m

Houston Hobby

lun. 1/19

12:47 pm-9:05 am

2 stops14h 18m

$854

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

lun. 12/15

5:00 am-10:48 pm

2 stops23h 48m

Houston Hobby

lun. 12/29

6:40 pm-5:30 pm

2 stops16h 50m

$923

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/11

Showing 1-10 of 27 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, April is the cheapest month in which you can book a flight from Portugal to Houston (average of $583). Flying from Portugal to Houston in July is currently the most expensive (average of $1,000). 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 noviembre 13, 2025.
Peruse reviews from past customers who have flown with United Airlines and American Airlines 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
9,017 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
United Airlines
7.4
Good
9,017 reviews
United Airlines
7.4
Good
9,017 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000
American Airlines
7.2
Good
11,051 reviews
United Airlines
7.4
Good
9,017 reviews

Crew

8.1

Overall

7.4

Entertainment

7.1

Boarding

7.7

Comfort

7.3

Food

6.6

Reviews

1 / 20
2.0
Mediocre

Sebrena,Oct 2025

IAH - RSW

The worst that I have ever experienced in my life so bad if it was free I'm not ever going to use your Airline again I dont believe ..... very disappointed 😞 😔0000000000000

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 17h 51m. The distance from Portugal to Houston is about 4777 mi. This flight may include one or multiple stops.

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

    To fly one-way, consider booking your trip with Iberia, which is currently one of the cheapest options available, starting at $532. American Airlines flights start at $532 while deals on British Airways start at $576 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, April is the cheapest month in which you can book a flight from Portugal to Houston (average of $583). Flying from Portugal to Houston in July is currently the most expensive (average of $1,000). 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 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 noviembre 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$767Average$838FlexibilityNo cancel feeOn-time69%

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