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$397+ 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 12/15. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Dec 6 — Dec 131
Sat 12/6
Sat 12/13
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 6, 2025.

This Trip.com deal was found by Cheapflights users on 11/4. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/235:00 amLIS - IAH
2 stops37h 45mMultiple Airlines
Sat 12/65:00 amIAH - LIS
2 stops21h 55mMultiple Airlines
Deal found 11/4$624
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Fri 12/54:40 pmLIS - IAH
1 stop20h 24mMultiple Airlines
Wed 12/108:00 amIAH - LIS
1 stop15h 35mMultiple Airlines
Deal found 11/6$713
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
Tue 12/25:00 pmLIS - IAH
2 stops49h 44mMultiple Airlines
Tue 12/96:35 pmIAH - LIS
1 stop35h 05mMultiple Airlines
Deal found 11/6$718
This Mytrip deal was found by Cheapflights users on 11/4. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/178:00 amLIS - IAH
2 stops31h 00mMultiple Airlines
Tue 12/304:10 pmIAH - LIS
2 stops17h 05mMultiple Airlines
Deal found 11/4$747
This Kiwi.com deal was found by Cheapflights users on 11/6. 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 12/49:50 amLIS - IAH
1 stop20h 09mMultiple Airlines
Wed 12/108:00 amIAH - LIS
1 stop15h 35mMultiple Airlines
Deal found 11/6$763
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Tue 11/257:00 pmLIS - IAH
2 stops47h 44mMultiple Airlines
Tue 12/25:30 amIAH - LIS
1 stop17h 55mMultiple Airlines
Deal found 11/4$775
This Kiwi.com deal was found by Cheapflights users on 11/4. 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.
Tue 11/257:00 pmLIS - IAH
2 stops47h 44mMultiple Airlines
Wed 12/35:30 amIAH - LIS
1 stop17h 55mMultiple Airlines
Deal found 11/4$776
This Delta deal was found by Cheapflights users on 11/5. 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.
Sun 11/235:00 amLIS - HOU
2 stops18h 53mDelta
Sat 12/66:00 amHOU - LIS
2 stops23h 20mDelta
Deal found 11/5$829
This Delta deal was found by Cheapflights users on 11/6. 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 11/135:00 amLIS - HOU
2 stops24h 40mDelta
Wed 11/266:00 amHOU - LIS
2 stops20h 40mDelta
Deal found 11/6$832
This Delta deal was found by Cheapflights users on 11/5. 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.
Sun 11/235:00 amLIS - HOU
2 stops24h 07mDelta
Wed 12/36:00 amHOU - LIS
2 stops20h 40mDelta
Deal found 11/5$833
This Virgin Atlantic deal was found by Cheapflights users on 11/3. 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.
Fri 11/2110:55 amLIS - HOU
2 stops18h 12mVirgin Atlantic
Fri 12/510:39 amHOU - LIS
2 stops15h 21mVirgin Atlantic
Deal found 11/3$852
This British Airways deal was found by Cheapflights users on 11/3. 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.
Thu 12/187:00 amLIS - HOU
2 stops18h 50mBritish Airways
Mon 1/54:17 pmHOU - LIS
2 stops16h 38mBritish Airways
Deal found 11/3$869

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 6, 2025.

Round-trip from

$624
(Trip.com)

One-way from

$397
(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 ($123 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
Search Deals

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 6, 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 11/20

7:00 am-10:00 pm

2 stops21h 00m

Houston George Bush Intcntl

Wed 12/3

5:30 am-5:25 am

1 stop17h 55m

$782

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 1/22

11:25 am-1:30 pm

1 stop32h 05m

Houston George Bush Intcntl

Tue 1/27

4:05 pm-11:20 am

1 stop13h 15m

$789

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 1/22

5:00 am-10:35 pm

2 stops23h 35m

Houston Hobby

Tue 1/27

11:09 am-3:10 pm

2 stops22h 01m

$794

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 1/22

5:00 am-9:15 pm

2 stops22h 15m

Houston George Bush Intcntl

Tue 1/27

12:40 pm-3:10 pm

2 stops20h 30m

$796

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 11/23

5:30 am-9:40 pm

2 stops22h 10m

Houston George Bush Intcntl

Sat 12/6

5:33 am-5:30 pm

2 stops29h 57m

$800

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 11/23

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Sat 12/6

6:20 am-8:10 am

1 stop19h 50m

$816

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 1/15

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Mon 1/19

1:35 pm-8:10 am

1 stop12h 35m

$816

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Thu 11/27

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Thu 12/11

1:34 pm-8:10 am

1 stop12h 36m

$816

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 11/23

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Thu 12/4

2:20 pm-10:15 am

2 stops13h 55m

$818

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 11/23

5:00 am-6:15 pm

1 stop19h 15m

Houston George Bush Intcntl

Wed 12/3

1:34 pm-8:10 am

1 stop12h 36m

$818

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/4

Showing 1-10 of 37 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, January is the cheapest month in which you can book a flight from Portugal to Houston (average of $560). 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 6, 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
9,007 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

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
9,007 reviews
United Airlines
7.4
Good
9,007 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

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
11,040 reviews
United Airlines
7.4
Good
9,007 reviews

Comfort

7.3

Entertainment

7.1

Boarding

7.7

Overall

7.4

Crew

8.1

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 23h 35m. The distance from Portugal to Houston is about 4777 mi.

  • 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, January is the cheapest month in which you can book a flight from Portugal to Houston (average of $560). 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 6, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$767Average$838FlexibilityNo cancel feeOn-time69%

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