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$361+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
janv. 27 — févr. 31
mar. 1/27
mar. 2/3
1 adult, Economy
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Cheap flight deals from Portugal to Houston

Best flights from Portugal to Houston
Discover carefully curated flight deals from Portugal to Houston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated décembre 28, 2025.

This Iberia deal was found by Cheapflights users on 12/25. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 3/188:20 amLIS - IAH
2 stops20h 33mMultiple Airlines
mar. 3/244:50 pmIAH - LIS
1 stop19h 50mMultiple Airlines
Deal found 12/25$725
This American Airlines deal was found by Cheapflights users on 12/27. 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.
lun. 1/1211:05 amLIS - IAH
1 stop17h 19mAmerican Airlines
dim. 1/259:50 pmIAH - LIS
1 stop17h 55mAmerican Airlines
Deal found 12/27$726
This British Airways deal was found by Cheapflights users on 12/26. 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.
sam. 2/710:40 amLIS - IAH
1 stop17h 50mBritish Airways
mar. 2/243:50 pmIAH - LIS
1 stop14h 15mBritish Airways
Deal found 12/26$727
This Expedia deal was found by Cheapflights users on 12/26. 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.
sam. 2/76:45 pmLIS - HOU
2 stops21h 20mIberia
dim. 2/2210:15 amHOU - LIS
2 stops15h 25mIberia
Deal found 12/26$761
This Delta deal was found by Cheapflights users on 12/26. 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.
dim. 2/85:00 amLIS - HOU
2 stops23h 33mDelta
lun. 2/235:19 pmHOU - LIS
2 stops18h 11mDelta
Deal found 12/26$788
This British Airways deal was found by Cheapflights users on 12/26. 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.
lun. 2/911:05 amLIS - IAH
1 stop17h 19mBritish Airways
sam. 2/216:00 amIAH - LIS
2 stops29h 55mBritish Airways
Deal found 12/26$727
This American Airlines deal was found by Cheapflights users on 12/27. 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.
mer. 2/118:45 pmLIS - HOU
2 stops18h 59mAmerican Airlines
mer. 2/1810:15 amHOU - LIS
2 stops16h 40mAmerican Airlines
Deal found 12/27$750
This Delta deal was found by Cheapflights users on 12/27. 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.
sam. 2/75:00 amLIS - HOU
2 stops23h 33mDelta
dim. 2/225:25 amHOU - LIS
2 stops21h 30mDelta
Deal found 12/27$792
This Iberia deal was found by Cheapflights users on 12/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/48:45 pmLIS - HOU
2 stops17h 49mIberia
sam. 2/2112:17 pmHOU - LIS
2 stops21h 48mIberia
Deal found 12/26$796
This British Airways deal was found by Cheapflights users on 12/27. 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.
lun. 1/1211:05 amLIS - IAH
1 stop17h 19mBritish Airways
mar. 1/2711:18 amIAH - LIS
2 stops28h 27mBritish Airways
Deal found 12/27$727
This Delta deal was found by Cheapflights users on 12/26. 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.
ven. 2/65:30 amLIS - HOU
2 stops23h 03mDelta
sam. 2/2110:50 amHOU - LIS
2 stops22h 20mDelta
Deal found 12/26$794
This Iberia deal was found by Cheapflights users on 12/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/96:45 pmLIS - HOU
2 stops21h 20mIberia
dim. 2/2210:15 amHOU - LIS
2 stops19h 35mIberia
Deal found 12/26$796
This British Airways deal was found by Cheapflights users on 12/26. 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.
mar. 2/1011:05 amLIS - IAH
1 stop17h 19mBritish Airways
ven. 2/2012:41 pmIAH - LIS
2 stops27h 44mBritish Airways
Deal found 12/26$727
This Delta deal was found by Cheapflights users on 12/26. 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.
lun. 2/95:30 amLIS - HOU
2 stops23h 03mDelta
lun. 2/1610:50 amHOU - LIS
2 stops22h 20mDelta
Deal found 12/26$794
This Iberia deal was found by Cheapflights users on 12/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/46:45 pmLIS - HOU
2 stops19h 49mIberia
lun. 2/2312:17 pmHOU - LIS
2 stops21h 48mIberia
Deal found 12/26$796
This British Airways deal was found by Cheapflights users on 12/26. 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.
ven. 2/611:05 amLIS - IAH
1 stop17h 25mBritish Airways
lun. 2/234:36 pmIAH - LIS
2 stops16h 19mBritish Airways
Deal found 12/26$727
This Iberia deal was found by Cheapflights users on 12/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 2/94:45 pmLIS - HOU
2 stops23h 20mIberia
lun. 2/2312:17 pmHOU - LIS
2 stops17h 33mIberia
Deal found 12/26$796
This British Airways deal was found by Cheapflights users on 12/26. 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.
lun. 2/911:05 amLIS - IAH
1 stop17h 19mBritish Airways
mar. 2/248:51 amIAH - LIS
2 stops21h 14mBritish Airways
Deal found 12/26$727
This Iberia deal was found by Cheapflights users on 12/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mer. 2/44:45 pmLIS - HOU
2 stops21h 49mIberia
dim. 2/2212:17 pmHOU - LIS
2 stops17h 33mIberia
Deal found 12/26$796
This British Airways deal was found by Cheapflights users on 12/27. 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.
sam. 2/710:40 amLIS - IAH
1 stop17h 50mBritish Airways
dim. 2/223:50 pmIAH - LIS
1 stop17h 00mBritish Airways
Deal found 12/27$727
This Iberia deal was found by Cheapflights users on 12/26. 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 Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
ven. 2/64:45 pmLIS - HOU
2 stops23h 20mIberia
lun. 2/2312:17 pmHOU - LIS
2 stops17h 33mIberia
Deal found 12/26$796
This British Airways deal was found by Cheapflights users on 12/25. 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.
jeu. 1/2210:55 amLIS - IAH
1 stop17h 29mBritish Airways
lun. 1/269:35 amIAH - LIS
2 stops30h 20mBritish Airways
Deal found 12/25$727
This British Airways deal was found by Cheapflights users on 12/27. 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.
lun. 1/1211:05 amLIS - IAH
1 stop17h 19mBritish Airways
dim. 1/254:50 pmIAH - LIS
2 stops22h 55mBritish Airways
Deal found 12/27$727

Find flight deals from Portugal to Houston

Keep the following information in mind while searching for Portugal to Houston flight deals. Data was last updated décembre 28, 2025.

Round-trip from

$668
(Kiwi.com)

One-way from

$361
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$929
From Portugal to Houston
Search Deals
One-way flight from Portugal to Houston
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($137 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($34 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 décembre 28, 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

mer. 3/18

8:20 am-11:53 pm

2 stops20h 33m

Houston George Bush Intcntl

mar. 3/24

4:50 pm-5:40 pm

1 stop19h 50m

$725

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

lun. 1/12

11:05 am-10:24 pm

1 stop17h 19m

Houston George Bush Intcntl

dim. 1/25

9:50 pm-9:45 pm

1 stop17h 55m

$726

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

sam. 2/7

10:40 am-10:30 pm

1 stop17h 50m

Houston George Bush Intcntl

mar. 2/24

3:50 pm-12:05 pm

1 stop14h 15m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

lun. 2/9

11:05 am-10:24 pm

1 stop17h 19m

Houston George Bush Intcntl

sam. 2/21

6:00 am-5:55 pm

2 stops29h 55m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

lun. 1/12

11:05 am-10:24 pm

1 stop17h 19m

Houston George Bush Intcntl

mar. 1/27

11:18 am-9:45 pm

2 stops28h 27m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

mar. 2/10

11:05 am-10:24 pm

1 stop17h 19m

Houston George Bush Intcntl

ven. 2/20

12:41 pm-10:25 pm

2 stops27h 44m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

ven. 2/6

11:05 am-10:30 pm

1 stop17h 25m

Houston George Bush Intcntl

lun. 2/23

4:36 pm-2:55 pm

2 stops16h 19m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

lun. 2/9

11:05 am-10:24 pm

1 stop17h 19m

Houston George Bush Intcntl

mar. 2/24

8:51 am-12:05 pm

2 stops21h 14m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

sam. 2/7

10:40 am-10:30 pm

1 stop17h 50m

Houston George Bush Intcntl

dim. 2/22

3:50 pm-2:50 pm

1 stop17h 00m

$727

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

jeu. 1/22

10:55 am-10:24 pm

1 stop17h 29m

Houston George Bush Intcntl

lun. 1/26

9:35 am-9:55 pm

2 stops30h 20m

$727

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/24

Showing 1-10 of 43 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 décembre 28, 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
9,113 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
United Airlines
7.4
Good
9,113 reviews
United Airlines
7.4
Good
9,113 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.
American Airlines
7.2
Good
11,073 reviews
United Airlines
7.4
Good
9,113 reviews

Entertainment

7.1

Overall

7.4

Food

6.6

Crew

8.1

Boarding

7.7

Comfort

7.3

Reviews

1 / 20
10.0
Excellent

Michelle,Dec 2025

DEN - MKE

I liked that the plane waited 5 minutes for a family whose incoming plane was late. This was the last flight of the day to MKE. Flight attendants actually checked in throughout the flight. Although, not really friendly. Happy to see screens on seat backs again. This is my first time not flying first class in over 10 years. It was economy plus.

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 19m. 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, 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 décembre 28, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$794Average$854FlexibilityNo cancel feeOn-time69%

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