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$453+ 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 4/12. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — HOU
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap 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 December 15, 2025.

This KLM deal was found by Cheapflights users on 12/14. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/2611:25 amLIS - IAH
1 stop32h 05mMultiple Airlines
Tue 12/304:05 pmIAH - LIS
1 stop19h 25mMultiple Airlines
Deal found 12/14$875
This Delta deal was found by Cheapflights users on 12/14. 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 12/265:30 amLIS - IAH
1 stop14h 25mDelta
Tue 12/302:42 pmIAH - LIS
2 stops20h 48mDelta
Deal found 12/14$881
This United Airlines deal was found by Cheapflights users on 12/14. 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.
Fri 12/2610:15 amLIS - IAH
2 stops17h 12mUnited Airlines
Tue 12/309:30 amIAH - LIS
2 stops18h 45mUnited Airlines
Deal found 12/14$890
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:20 amLIS - IAH
2 stops40h 19mAir Canada
Thu 1/812:10 pmIAH - LIS
1 stop15h 10mAir Canada
Deal found 12/13$909
This Iberia deal was found by Cheapflights users on 12/15. 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.
Fri 12/198:45 pmLIS - IAH
2 stops24h 55mMultiple Airlines
Thu 1/83:50 pmIAH - LIS
1 stop16h 55mMultiple Airlines
Deal found 12/15$910
This Air Canada deal was found by Cheapflights users on 12/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1911:20 amLIS - IAH
2 stops40h 19mAir Canada
Fri 1/912:10 pmIAH - LIS
2 stops15h 10mAir Canada
Deal found 12/13$932
This Iberia deal was found by Cheapflights users on 12/15. 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.
Fri 12/198:45 pmLIS - IAH
2 stops24h 55mIberia
Thu 1/811:27 amIAH - LIS
2 stops14h 13mIberia
Deal found 12/15$935
This American Airlines deal was found by Cheapflights users on 12/14. 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.
Fri 12/1911:05 amLIS - IAH
2 stops19h 53mAmerican Airlines
Fri 1/911:11 amIAH - LIS
2 stops15h 39mAmerican Airlines
Deal found 12/14$937
This Iberia deal was found by Cheapflights users on 12/15. 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.
Fri 12/198:45 pmLIS - IAH
2 stops24h 55mIberia
Fri 1/91:57 pmIAH - LIS
2 stops15h 53mIberia
Deal found 12/15$964
This Gurufare deal was found by Cheapflights users on 12/13. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1910:15 amLIS - IAH
1 stop14h 55mBrussels Airlines
Fri 1/912:29 pmIAH - LIS
1 stop13h 41mBrussels Airlines
Deal found 12/13$1,001

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 December 15, 2025.

Round-trip from

$666
(Trip.com)

One-way from

$453
(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. 13% potential increase in price ($143 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($35 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 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 December 15, 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

11:35 am-3:19 pm

3 stops33h 44m

Houston George Bush Intcntl

Wed 1/28

8:30 am-3:15 pm

2 stops24h 45m

$713

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Fri 2/13

11:35 am-11:59 pm

2 stops18h 24m

Houston George Bush Intcntl

Sat 2/21

5:24 pm-9:20 am

2 stops33h 56m

$768

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 1/15

5:00 am-10:33 pm

2 stops23h 33m

Houston Hobby

Wed 1/28

11:09 am-3:10 pm

2 stops22h 01m

$868

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Tue 2/3

8:20 am-10:46 pm

2 stops20h 26m

Houston Hobby

Sat 2/7

12:49 pm-9:05 am

2 stops14h 16m

$981

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Tue 2/10

11:05 am-10:46 pm

2 stops17h 41m

Houston Hobby

Sat 2/14

12:17 pm-9:05 am

2 stops14h 48m

$984

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Fri 3/13

11:25 am-9:41 am

2 stops27h 16m

Houston Hobby

Wed 4/8

2:05 pm-10:45 am

2 stops14h 40m

$1,153

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Tue 2/10

6:30 am-10:46 pm

3 stops46h 16m

Houston Hobby

Sat 2/14

4:20 pm-9:15 pm

3 stops46h 55m

$17,143

LisbonHouston

LIS - HOU

LISHOU

Lisbon Humberto Delgado

Thu 1/15

10:40 am-10:46 pm

3 stops42h 06m

Houston Hobby

Wed 1/28

6:36 pm-9:15 pm

3 stops44h 39m

$17,181

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Sun 4/12

7:50 pm-11:49 pm

2 stops33h 59m

$453

LisbonHouston

LIS - IAH

LISIAH

Lisbon Humberto Delgado

Wed 6/10

4:25 pm-1:45 pm

1 stop27h 20m

$558

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/14

Showing 1-10 of 24 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 December 15, 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
9,092 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
United Airlines
7.4
Good
9,092 reviews
United Airlines
7.4
Good
9,092 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).
American Airlines
7.2
Good
11,052 reviews
United Airlines
7.4
Good
9,092 reviews

Comfort

7.3

Boarding

7.7

Food

6.6

Crew

8.1

Entertainment

7.1

Overall

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

AMS - EWR

It was good! The first 3/4 of the trip was uncomfortably cold. Only one option for lunch that I didn’t enjoy (vegetarian).

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 20h 26m. The distance from Portugal to Houston is about 4777 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 December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$675Average$813FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$794Average$851FlexibilityNo cancel feeOn-time69%

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