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$310+ 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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Dec 26 — Jan 21
Fri 12/26
Fri 1/2
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 November 26, 2025.

This British Airways deal was found by Cheapflights users on 11/24. 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 12/311:05 amLIS - IAH
1 stop16h 23mBritish Airways
Wed 12/109:28 amIAH - LIS
2 stops23h 22mBritish Airways
Deal found 11/24$712
This American Airlines deal was found by Cheapflights users on 11/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/311:05 amLIS - IAH
1 stop16h 23mAmerican Airlines
Wed 12/104:32 pmIAH - LIS
2 stops19h 08mAmerican Airlines
Deal found 11/26$713
This British Airways deal was found by Cheapflights users on 11/26. 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.
Wed 12/311:05 amLIS - IAH
1 stop16h 23mBritish Airways
Thu 12/117:25 amIAH - LIS
2 stops22h 45mBritish Airways
Deal found 11/26$714
This American Airlines deal was found by Cheapflights users on 11/26. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/38:45 pmLIS - IAH
2 stops19h 17mAmerican Airlines
Tue 12/911:07 amIAH - LIS
2 stops15h 58mAmerican Airlines
Deal found 11/26$725
This British Airways deal was found by Cheapflights users on 11/26. 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.
Fri 12/511:05 amLIS - IAH
1 stop16h 23mBritish Airways
Tue 12/91:28 pmIAH - LIS
1 stop13h 37mBritish Airways
Deal found 11/26$726
This British Airways deal was found by Cheapflights users on 11/24. 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 12/311:05 amLIS - IAH
1 stop16h 23mBritish Airways
Mon 12/84:32 pmIAH - LIS
2 stops35h 18mBritish Airways
Deal found 11/24$729
This British Airways deal was found by Cheapflights users on 11/26. 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.
Tue 12/911:05 amLIS - IAH
1 stop16h 23mBritish Airways
Wed 12/243:50 pmIAH - LIS
1 stop24h 00mBritish Airways
Deal found 11/26$730
This British Airways deal was found by Cheapflights users on 11/26. 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.
Wed 12/311:05 amLIS - IAH
1 stop16h 23mBritish Airways
Sun 12/144:32 pmIAH - LIS
2 stops23h 13mBritish Airways
Deal found 11/26$732
This Finnair deal was found by Cheapflights users on 11/24. 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.
Tue 12/211:05 amLIS - IAH
1 stop16h 25mMultiple Airlines
Thu 12/111:28 pmIAH - LIS
1 stop13h 37mMultiple Airlines
Deal found 11/24$734
This American Airlines deal was found by Cheapflights users on 11/24. 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.
Tue 12/211:05 amLIS - IAH
2 stops18h 56mAmerican Airlines
Thu 12/111:28 pmIAH - LIS
1 stop13h 37mAmerican Airlines
Deal found 11/24$738
This British Airways deal was found by Cheapflights users on 11/24. 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 12/16:35 pmLIS - IAH
2 stops33h 50mBritish Airways
Thu 12/119:28 amIAH - LIS
2 stops20h 42mBritish Airways
Deal found 11/24$740
This Delta deal was found by Cheapflights users on 11/25. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/2512:20 pmLIS - HOU
2 stops35h 33mDelta
Sat 11/292:32 pmHOU - LIS
2 stops18h 38mDelta
Deal found 11/25$968

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 November 26, 2025.

Round-trip from

$655
(Mytrip)

One-way from

$310
(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 ($33 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 November 26, 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

Thu 1/15

8:05 pm-11:59 pm

2 stops33h 54m

Houston George Bush Intcntl

Wed 1/28

8:30 am-3:15 pm

2 stops24h 45m

$655

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Mon 1/12

5:00 am-11:59 pm

2 stops24h 59m

Houston George Bush Intcntl

Sun 1/25

5:05 am-2:35 pm

3 stops27h 30m

$677

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 1/15

6:30 am-8:00 pm

2 stops19h 30m

Houston George Bush Intcntl

Wed 1/28

3:50 pm-12:10 pm

1 stop14h 20m

$709

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 2/1

7:45 am-8:00 pm

2 stops18h 15m

Houston George Bush Intcntl

Tue 3/3

3:50 pm-5:40 pm

1 stop19h 50m

$711

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 2/3

6:30 am-2:05 pm

2 stops37h 35m

Houston George Bush Intcntl

Mon 3/2

3:50 pm-6:55 pm

1 stop21h 05m

$711

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Tue 2/3

6:30 am-2:05 pm

2 stops37h 35m

Houston George Bush Intcntl

Sun 3/1

3:50 pm-9:45 pm

1 stop23h 55m

$711

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 2/1

7:45 am-8:00 pm

2 stops18h 15m

Houston George Bush Intcntl

Mon 3/2

3:50 pm-6:55 pm

1 stop21h 05m

$711

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 2/1

7:45 am-8:00 pm

2 stops18h 15m

Houston George Bush Intcntl

Sat 2/28

3:50 pm-2:50 pm

1 stop17h 00m

$711

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 1/15

10:55 am-10:46 pm

2 stops17h 51m

Houston Hobby

Wed 1/28

12:47 pm-12:10 pm

2 stops17h 23m

$712

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 1/30

6:30 am-10:42 pm

2 stops22h 12m

Houston George Bush Intcntl

Sun 3/1

3:50 pm-12:05 pm

1 stop14h 15m

$712

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/25

Showing 1-10 of 38 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 November 26, 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
9,050 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
9,050 reviews
United Airlines
7.4
Good
9,050 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

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
11,038 reviews
United Airlines
7.4
Good
9,050 reviews

Comfort

7.3

Food

6.6

Overall

7.4

Boarding

7.7

Crew

8.1

Entertainment

7.1

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 19h 30m. 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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Alternative routes for Portugal to Houston

See prices for flight routes from nearby airports that may be better suited for you.
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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 November 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$794Average$851FlexibilityNo cancel feeOn-time69%

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